| 40th week of 2009 patent applcation highlights part 39 |
| Patent application number | Title | Published |
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| 20090245034 | OPTICAL DEVICE, OPTICALLY ASSISTED MAGNETIC RECORDING HEAD AND OPTICALLY ASSISTED MAGNETIC RECORDING APPARATUS - Provided are an optical device, optically assisted magnetic recording head and optically assisted magnetic recording apparatus that effectively emit the introduced light, from the apex portion of a waveguide. The optical device includes: an optical element having a substantially parabolic outline which contains a side surface and the apex portion with a light-emitting surface; a light guiding unit for forming a light spot on the core layer; and a light introducing section provided on the core layer at the position at which the light spot is formed. The light introduced into the core layer travels substantially parallel to the axis of the parabola, and is reflected by the side surface so as to be converged at the focal point of the parabola and is then emitted from the apex portion. The position of the point where the light intensity is greatest in the light spot is deviated from the axis. | 2009-10-01 |
| 20090245035 | Disc storage apparatus and disc storage method - A disc storage apparatus includes a disc changer mechanism including a disc slot through which a disc is insertable, a storage section having storage locations that are capable of storing discs inserted through the disc slot, and a transport mechanism that transports the disc, inserted through the disc slot, to any of the storage locations in the storage section. The apparatus further includes an operation section having operations keys; a display section; and a controller that associates, when the disc is inserted and any of the operations keys is operated, the operated operation key with the storage location in which the disc is stored. In accordance with a predetermined operation on the operation section, the controller extracts all discs stored in the storage locations associated with the operated operation key and causes information regarding all the extracted discs to be displayed on the display section. | 2009-10-01 |
| 20090245036 | SERVO CONTROL DEVICE, SERVO CONTROL METHOD, AND SERVO CONTROL PROGRAM - A servo control device that is capable of optimizing gain that is used in servo control and stabilizing the servo control even when the gain changes due to change in the status of overrecording over the same radial position on an optical disc. When drawing a visible image on the label surface of an optical disc DK by an overrecording operation over the same radial position of that label surface, the servo control device comprises a CPU | 2009-10-01 |
| 20090245037 | Focus Servo Method, Optical Reproducing Method, and Optical Reproducing Apparatus - A focus servo method includes: causing light to enter an objective lens at an eccentric position; irradiating light onto recording marks of an optical recording medium in an oblique direction with respect to a thickness direction of the optical recording medium; detecting light reflected by the recording marks as a reflection of the light irradiated onto the recording marks; and controlling a position of the objective lens based on the detected light. | 2009-10-01 |
| 20090245038 | TRACK-JUMP CONTROL SYSTEM AND METHOD FOR MAINTAINING TRACK-JUMP STABILITY - A track-jump control system and method are provided. The track-jump control system applied in an optical disc drive comprises a signal generator, a protection device, a velocity estimator, and a controller. The signal generator receives the signal from the PUH and generates a tracking signal and a position signal. The protection device receives the position signal and when the position signal represents the PUH pass a predetermined position of the optical disc, the protection device generates a protection signal. The velocity estimator estimates the velocity of the PUH according to the tracking signal, and then generates a velocity signal. The controller receives the velocity signal and the protection signal, protects the velocity signal according to the protection signal, and generates a control signal to control the track-jump according to the protected velocity signal. | 2009-10-01 |
| 20090245039 | OPTICAL RECORDING/REPRODUCING APPARATUS - An optical recording/reproducing apparatus includes a disc, a pickup to irradiate a laser beam to the disc and detect a reflected light of the irradiated laser beam, a controller to generate a tracking error signal from a signal of the reflected light and generate a control driving signal for track following by using the tracking error signal, a driving unit to perform tracking servo control by driving an actuator of the pickup according to the control driving signal, and an output unit to output an accelerating and decelerating control driving signal transmitted to the driving unit during the tracking servo control as a pulse width modulation (PWM) signal. | 2009-10-01 |
| 20090245040 | OPTICAL DISC REPRODUCING APPARATUS AND OPTICAL DISC REPRODUCING METHOD - An optical disc reproducing apparatus according to the present invention includes an optical pickup for receiving a reflection signal from an optical disc having a land and a groove, an error signal creation unit for creating a tracking error signal from the reflection signal, a polarity switching unit arranged to switch the polarity of the tracking error signal, and a servo processing unit for performing a tracking servo process using the tracking error signal output from the polarity switching unit and creating a drive signal of a tracking actuator provided with the optical pickup, and the polarity switching unit switches the polarity of the tracking error signal in a reproduction state in which the optical disc is reproduced and in a waiting state in which the reproduction is interrupted. According to the optical disc reproducing apparatus, even if a reproduction laser beam is continuously radiated in the waiting state, deterioration of a recording film of a recording type optical disc can be prevented as well as a transition between the waiting state and the reproduction state can be securely performed in a short time. | 2009-10-01 |
| 20090245041 | SYSTEM FOR PREVENTING EXCESSIVE SKIPPING ON AUDIO DISKS - The present invention provides for a method for reducing undesirable skipping during playback of a compact disc in a compact disc player. A lens system of the compact disc player reads audio data and subcode data from the compact disc. The subcode data includes Q channel bits and P channel bits. The actual time lapse of the compact disc playback is calculated from the Q channel bits and the P channel bits, while a target time lapse is calculated based on data received from a real-time clock. The difference between the two time lapse values is calculated, and if the differences is greater than a predetermined threshold, the lens system is repositioned to read the audio data from the compact disc corresponding to a predetermined time interval in advance of the current position of the lens system. | 2009-10-01 |
| 20090245042 | OPTICAL DISC APPARATUS AND LIGHT POWER CORRECTING METHOD - An optical disc apparatus includes: an obtaining unit obtaining a sensitivity coefficient indicating a relation between a light power of a semiconductor laser and a monitor value; a first deriving unit deriving a first monitor value in setting the light power at a peak power; a second deriving unit deriving a second monitor value in setting the light power at an erase power; a converting unit converting the first and the second monitor values into first and second light power values based on the sensitivity coefficient; a first calculating unit calculating a ratio between the first and the second light power values; a second calculating unit calculating a correction coefficient based on a setting value of a ratio between the peak power and the erase power and a calculation value of the ratio between the first and the second light power values; and a correcting unit correcting the light power of the semiconductor laser based on the correction coefficient. | 2009-10-01 |
| 20090245043 | OPTICAL RECORDING/REPRODUCING APPARATUS AND OPTICAL RECORDING/REPRODUCING METHOD - Disclosed is an optical recording/reproducing apparatus. The optical recording/reproducing apparatus includes a laser light source capable of emitting pulsed laser light in a mode-locked state in which light beams having different wavelengths are synchronized and the pulsed laser light is oscillated, means for controlling the laser light source to be changed from a state of emitting the laser light in the mode-locked state to a state of emitting continuous-wave laser light, and means for irradiating a recording medium with one of the laser light in the mode-locked state and the continuous-wave laser light. | 2009-10-01 |
| 20090245044 | OPTICAL DISC APPARATUS AND OPTICAL DISC RECORDING AND REPRODUCING METHOD - Provided is an optical disc apparatus including: a recording unit configured to record data on an optical disc with laser lights of recoding powers set for first and second layers thereof; and a control unit configured to record/reproduce test data on/from these layers, determine first and second optimum recording powers for these layers, and set the determined first and second optimum recording powers in the recording unit, wherein the control unit changes the recording power across a predetermined search width, centering on a first recommended value for the first layer to determine the first optimum recording power, and corrects a second recommended value for the second layer on the basis of the first recommended value and the first optimum recording power and changes the recording power across the search width, centering on the corrected second recommended value to determine the second optimum recording power. | 2009-10-01 |
| 20090245045 | OPTICAL DISK DEVICE AND CONTROL METHOD - According to one embodiment, an optical disk device includes a laser light source that emits laser light to be applied to an optical disk, an automatic power control circuit that controls a laser output of the laser light source, and a control processor that performs a setting data transmission process for the automatic power control circuit. The automatic power control circuit includes an operation setting module that makes an operation setting according to setting data obtained in the setting data transmission process of the control processor and a condition determining module that determines whether an operation setting permission condition containing the number of clocks during a transmission period of the setting data is adequate, and inhibits the operation setting of the operation setting module when the operation setting permission condition is not adequate. | 2009-10-01 |
| 20090245046 | RECORDING DEVICE FOR RECORDING A CONTENT INTO A PLURALITY OF RECORDING MEDIA AND CONTROL METHOD THEREOF - A recording device records contents in a plurality of recording media. While the recording device records a content in a recording medium, if a free space of the recording medium runs out, an unrecorded part of the content needs to be recorded in another recording medium. In order to play back all parts of the content, all recording media in which all the parts of the content have been separately recorded are necessary. Particularly, if an internal recording medium included in the recording device has a small space and accordingly a sufficient space is secured by connecting an external removable recording medium to the recording device after the recording has started, parts of the content are separately recorded in the internal recording medium and the external recording medium. As a result, even if the external recording medium is removed from the recording device and is connected to a playback device in order to play back all the parts of the content, it is possible to play back only one part of the content. In order to play back all parts of the content using another playback device, a user needs to edit the separately recorded parts of the content so as to be saved in a single recording medium. In view of this problem, the present invention aims to provide a recording device that controls a recording destination of a content to be recorded such that the content can be recorded in a single recording medium for as long as possible. | 2009-10-01 |
| 20090245047 | METHOD OF ENCODING DATA ON AN INFORMATION CARRIER, SYSTEM FOR READING SUCH AN INFORMATION CARRIER - The invention relates to a method of encoding a set of data on an information carrier comprising data areas each intended to store a data, each data area being characterized by a transmission coefficient and a phase-shift coefficient, said method comprising a step of calculating the transmission coefficient and phase-shift coefficient of said data areas so that an output light pattern corresponding to the intensity pattern of said set of data is generated at a given distance from the information carrier, via interference between light outputted by said data areas in response of an array of light spots periodically applied to non-adjacent data areas. | 2009-10-01 |
| 20090245048 | OPTICAL RECORDING METHOD AND OPTICAL RECORDING APPARATUS - Disclosed is an optical recording method. The optical recording method includes emitting laser light from a mode-locked laser light source, modulating a pulse of the laser light during a time period when a recording mark is formed in a medium, and irradiating the medium with the laser light modulated. | 2009-10-01 |
| 20090245049 | HYBRID RECORDING DEVICE - A hybrid recording device having a non-volatile semiconductor memory and a recording magnetic disk includes a mapping unit that maps a first recording area in the recording magnetic disk and a second recording area in the non-volatile semiconductor memory, and a controller that controls an access to the second recording area mapped by the mapping unit when there is an access instruction to the first recording area. | 2009-10-01 |
| 20090245050 | OPTICAL DISK DEVICE AND POWER SUPPLY METHOD - According to one embodiment, an optical disk device includes types of semiconductor laser diodes configured to emit laser light of different wavelengths, an output control circuit configured to control light output of each semiconductor laser diode, and a composite power source configured to generate voltages required for driving the types of semiconductor laser diodes and operating the output control circuit from a single power source voltage and to selectively output the generated voltages. The composite power source includes an input port to input an external control signal at a time of voltage selection and is configured to change the output voltage stepwise in response to the control signal. | 2009-10-01 |
| 20090245051 | METHOD AND APPARATUS FOR LASER CONTROL DURING RECORDING - The invention relates to recording on a medium, and in particular, to laser control during recording data on an optical medium. A laser control method for dynamically adjusting laser power during recording data onto an optical disc comprises: recording normal data onto the optical disc according to an initial laser power; stopping recording when a trigger is generated; reading back the recorded normal data and generating a first recording quality index; recording a test pattern at a test pattern starting point according to a selected laser power; reading back the test pattern and generating a second recording quality index; and determining an adaptive laser power to continually record the normal data according to the first recording quality index and the second recording quality index. | 2009-10-01 |
| 20090245052 | OPTICAL RECORDING METHOD, OPTICAL RECORDING APPARATUS, OPTICAL RECORDING MEDIUM, AND OPTICAL RECORDING AND REPRODUCING METHOD - The present invention aims to provide an excellent optical recording method, an optical recording apparatus, and an optical recording medium that provide higher efficiency of recording and reproducing and are uninfluenced by the mismatch of optical axes of plural laser lights induced from accident errors of optical recording and optical reproducing apparatuses when carrying out recording or reproducing or control of focus or tracking by use of a laser light, and layer construction of the recording medium itself is simple. | 2009-10-01 |
| 20090245053 | RECORDING MEDIUM, DATA RECORDING APPARATUS, DATA REPRODUCING APPARATUS AND DATA RECORDING METHOD - Provided is a new-type recordable DVD medium characterized in having medium characteristics not defined in the DVD-R standards and-having compatibility with the DVD-ROM standards. Since information on the new-type recordable DVD medium can be played back by an existing player, even when content data protected by CSS (Content Scrambling System) is recorded on the new-type recordable DVD medium, the recordable DVD medium can be used for content distribution service using a kiosk terminal. | 2009-10-01 |
| 20090245054 | METHOD AND DEVICE FOR ENHANCED ROBUSTNESS OF NEAR-FIELD OPTICAL SYSTEMS - The invention comprises a method and device for application in a near-field optical system such that the robustness of the optical system and the system performance are enhanced. Use or threshold values, in combination with signals already present in the system, facilities protection by implementation of corrective actions to be taken in the event of the distance between refractive element and record carrier being determined to be outside threshold boundaries. | 2009-10-01 |
| 20090245055 | DVD Replication of Encoded Content - An apparatus includes a controller for enabling replicating of media content from encoded content received, and a recorder responsive to the controller for recording content on media readable by a device other than said recorder. | 2009-10-01 |
| 20090245056 | OPTICAL DISK DEVICE AND CONTROL METHOD - According to one embodiment, an optical disk device includes a semiconductor laser, a circuit which generates a timing signal to determine a recording pulse timing, a circuit which sets a magnitude of a current for the laser, a circuit which switches the magnitude of the current according to the timing signal, a generation circuit which generates a correction signal from the timing signal to correct response characteristics of a recording pulse, a circuit which synthesizes the correction signal and signals obtained as the switch result to determine the magnitude of the current, and a circuit which feeds the current to the laser according to the synthesis result. The generation circuit extracts high-frequency components from the signals obtained as the switch result and the signal generated by the synthesis circuit, and switches a frequency and a signal gain of each of the components, in accordance with recording pulse conditions. | 2009-10-01 |
| 20090245057 | SENSOR DETACHMENT DETECTION CIRCUIT, SENSOR DETACHMENT DETECTION METHOD, AND INFORMATION STORAGE DEVICE - A fault detection circuit, for detecting a fault condition associated with a sensor (wherein non-fault detection signals output by the sensor include high frequency noise components), includes: an input unit to receive a raw signal from the sensor and to provide a corresponding detection signal; and a determination unit to determine if the detection signal includes components in significant amounts corresponding to the non-fault high frequency noise components, and to output an indication that the fault condition is satisfied if the detection signal does not include components in significant amounts corresponding to the non-fault high frequency noise components. | 2009-10-01 |
| 20090245058 | INFORMATION PROCESSING APPARATUS AND METHOD, PROGRAM, RECORDING MEDIUM, AND INFORMATION PROCESSING SYSTEM - An information processing apparatus includes a measuring unit, a transmitter, and a receiver. The measuring unit first measures the performance of the information processing apparatus. The transmitter then transmits measurement results in the form of information indicating the performance measured by the measuring unit, together with a content request requesting desired content, to another information processing apparatus. The receiver subsequently receives content from the other information processing apparatus that has been supplied according to the content request and selected on the basis of the measurement results. In so doing, the information processing load is suitably adjusted according to the performance of the information processing apparatus. | 2009-10-01 |
| 20090245059 | METHOD AND APPARATUS FOR RECORDING OR RETRIEVING INFORMATION ON OPTICAL DISC, AND MANUFACTURING PROCESS OF OPTICAL DISC ON WHICH INFORMATION IS RECORDED - A method for recording information on an optical disc having a recording layer which contains a two-photon absorption compound is provided. In this method, the information to be recorded is obtained as first pit array data indicative of a first linear array of pits, wherein the pits in the first linear array correspond to those to be formed on a plurality of tracks arranged spirally or concentrically on the optical disc. The first pit array data is then converted into second pit array data indicative of a second linear array of the pits. The second linear array of the pits corresponds to that to be obtained as a result of scanning, sequentially in radial directions of the optical disc, the pits arranged in the first linear array along the plurality of tracks on the optical disc. An area of the optical disc, which includes an area corresponding to the plurality of tracks, is scanned with a pulsed laser sequentially in the radial directions of the optical disc while rotating the optical disc. Emission of a pulsed laser beam produced by the pulsed laser is interrupted and resumed according to the second pit array data. | 2009-10-01 |
| 20090245060 | METHOD AND APPARATUS FOR WRITING DATA ON STORAGE MEDIUM - A data recording method according to the present invention is a method for recording data as edge position information, including marks and spaces of multiple different lengths, on a storage medium by irradiating the storage medium with a pulsed energy beam. The method includes the steps of: (A) generating a write code sequence based on the data to be recorded; (B) determining a write pulse waveform, defining the power modulation of the energy beam, according to the code lengths of respective codes included in the write code sequence; and (C) modulating the power of the energy beam based on the write pulse waveform. If the shortest code length of the write code sequence is n (which is an integer equal to or greater than one), a write pulse waveform that has only one write pulse is assigned to recording mark making periods corresponding to codes with code lengths x of n, n+1 and n+2, and a write pulse waveform that has multiple write pulses Pw is assigned to recording mark making periods corresponding to codes with code lengths x of n+3 or more. | 2009-10-01 |
| 20090245061 | Apparatus for manufacturing information record medium, information record medium, information recording apparatus and information recording method - On an information record medium ( | 2009-10-01 |
| 20090245062 | METHOD AND APPARATUS FOR EDITING AN OPTICAL DISC - A method is provided for editing an optical disc having a plurality of application-functional-layers. The method comprises the steps of obtaining description information of an edit performed on a program data in one of the layers, and generating a sharing information according to the description information in order to correspondingly edit application files in the other layer (s) of the optical disc. With the method and apparatus, the edit performed on one layer of the optical disc may be identified in other functional layer (s) and be used to edit and update the corresponding application files in those layers, so as to avoid conflict between the program data and application file. | 2009-10-01 |
| 20090245063 | Device for Automatic Back-up, Organization and Operation using Voice Recognition Search Engine for Computer File Media - A digital memory organizer including a digital memory with a connection to a computer and designated software associated with the digital memory to carry out functions as automatic copying digital data, burning digital data onto hardware, organizing digital data according to the instruction of the user and in default of specific instruction, according to a default instruction. The designated software would also support voice recognition technology for the purpose of memory organization and memory retrieval. | 2009-10-01 |
| 20090245064 | COMBINATION OPTICAL MEDIA, DEVICE AND METHOD FOR ACCESSING THEREOF - A combination optical disc ( | 2009-10-01 |
| 20090245065 | OPTICAL DISC DEVICE AND FOCUS CONTROL METHOD - A focus control section first performs a reference focus control process in which a reference optical beam is focused on a reference layer of an optical disc according to the result of receiving a reference reflection optical beam, and then switches from the reference focus control process to an information focus control process in which an information optical beam is focused on a mark layer of the optical disc according to the result of receiving an information reflection optical beam. | 2009-10-01 |
| 20090245066 | OPTICAL DATA CARRIER, AND METHOD FOR READING/RECORDING DATA THEREIN - An optical data carrier is presented. The data carrier comprises: at least one recording layer composed of a material having a fluorescent property variable on occurrence of multi-photon absorption resulting from an optical beam, said recording layer having a thickness for forming a plurality of recording planes therein; at least one non-recording layer formed on at least one of upper and lower surfaces of said recording layer and differing in fluorescent property from said recording layer; and at least one reference layer having a reflecting surface being an interface between the recording layer and the non-recording layer. | 2009-10-01 |
| 20090245067 | OPTICAL WRITING DEVICE AND OPTICAL WRITING METHOD - An optical writing device performs writing on an exposure region of a light writing display medium. The optical writing device includes an accommodation section, a light irradiation member, a voltage application member, a medium conveyance member and control means. The control means performs control for: applying voltage with the voltage application member to a first medium; the light irradiation member irradiating the light bearing image information and moving a first distance in the first direction over the first medium; the voltage application member applying voltage to a second medium; the light irradiation member irradiating the light for image erasure onto the second medium and moving a second distance in the second direction over the second medium; and, simultaneously the movement of the light irradiation member in the second direction, the medium conveyance member conveying the first medium. | 2009-10-01 |
| 20090245068 | OPTICAL PICKUP DEVICE AND OPTICAL DISC DRIVE - An optical pickup device according to the present invention includes: first and second light sources that are driven selectively and that emit blue and red light beams, respectively; an optical element for splitting the blue and red light beams emitted into main and sub-blue beams and main and sub-red beams, respectively; first and second photodetectors that receive the main and sub-blue beams reflected from the optical disc, thereby outputting electrical signals; and third and fourth photodetectors that receive the main and sub-red beams reflected from the optical disc, thereby outputting electrical signals. A dead zone that outputs no electrical signal representing the intensity of the light received is provided for respective parts of the second and fourth photodetectors. | 2009-10-01 |
| 20090245069 | RECORDING MEDIUM AND RECORDING SYSTEM - Disclosed herein is a recording medium on or from which the recording or reproduction of data is stably performed. On the recording medium, data are recorded three-dimensionally by the irradiation of a recording laser beam. The recording medium includes a reflection control layer including a plurality of reflection layers stacked in a film thickness direction, each reflection layer having a connection terminal, each reflection layer exhibiting reflectivity and transmissivity changeable in response to an electrical signal supplied to the connection terminal and a recording layer disposed at a beam incidence side of the reflection control layer. | 2009-10-01 |
| 20090245070 | Suspension Arm Actuator For an Optical Scanning Device - The invention relates to a suspension arm actuator for an optical scanning device, comprising a suspension arm designed as a two-arm lever and allocated to an optical recording carrier. The suspension arm is, in known manner, mounted to a support between the lever arms such that it can be pivoted about an axis extending perpendicularly to said suspension arm. On its end side, one of the lever arms supports an optical head having optical components, in particular having an objective lens, while a magnetic drive initiating a swivel motion about the axis is allocated to the other lever arm. In addition, the suspension arm actuator comprises a magnetic drive initiating a motion perpendicular to this swivel motion and electric connections between a control unit arranged outside of said suspension arm actuator and the electrical and optical components. The invention solves the problem of designing such a suspension arm actuator such that said suspension arm actuator allows arrangement of an increased number of optical components while keeping or being reduced in its height. To achieve this, electric connections are established by means of line sections arranged at the suspension arm in a plane extending in transverse direction in relation to the axis spaced apart radially from the axis and spaced apart from each other, said line sections each being electrically connected to a contact element for connection of a control line running to the control unit. | 2009-10-01 |
| 20090245071 | OPTICAL DISC DEVICE AND MEDIA TYPE DETERMINATION METHOD - A device includes: an objective lens that serves as a lens having a first numerical aperture when a first optical beam corresponding to a first optical disc converges on the first optical disc while serving as a lens having a second numerical aperture when a second optical beam corresponding to a second optical disc converges on the second optical disc; a section that generates a reflection optical signal from the first or second optical beam reflected by the first or second optical disc; and a section that determines whether an unknown disc is the first optical disc based on a degree of matching between the waveform of the reflection optical signal obtained when the first optical beam is emitted to the first optical disc, and the waveform of the reflection optical signal obtained when the first optical beam is emitted to the unknown disc. | 2009-10-01 |
| 20090245072 | OPTICAL PICKUP APPARATUS - An optical-pickup apparatus comprising: a laser diode to emit laser light forward and backward; an objective lens to focus the laser light emitted forward from the laser diode onto a signal-recording layer of an optical disc; a spherical-aberration correction element that is arranged on an optical path between the laser diode and the objective lens, and is so movable in an optical-axis direction of the laser light as to correct spherical aberration; a movement-position detection unit to detect a movement position of the spherical-aberration correction element, and output a detection signal indicating the movement position of the spherical-aberration correction element; a photodetector to receive the laser light emitted backward from the laser diode, and output a monitor signal corresponding to a light-receiving level of the laser light; and a control unit to control intensity of the laser light emitted from the laser diode based on the monitor and detection signals. | 2009-10-01 |
| 20090245073 | OPTICAL PICKUP APPARATUS - An optical-pickup apparatus comprising: a laser diode; an objective lens made of a synthetic resin to focus laser light emitted from the laser diode onto a signal-recording layer of an optical disc; a collimating lens that is arranged in an optical path between the laser diode and the objective lens, and is so movable in an optical axis direction of the laser light as to correct spherical aberration; a temperature sensor to detect a temperature of the objective lens; and an aberration-correcting device to move the collimating lens from a first position where the spherical aberration is a predetermined value on a positive side to a second position where the spherical aberration is a predetermined value on a negative side, when an amount of change in temperature detected by the temperature sensor reaches a predetermined amount after an operation of reproducing a signal from the signal-recording layer is started. | 2009-10-01 |
| 20090245074 | PICK-UP HEAD ASSEMBLY FOR OPTICAL DISC EMPLOYING ELECTRICALLY TUNABLE LIQUID CRYSTAL LENS - An optical disc storage system employs a read/write pick-up head assembly in which the optical path between the disc and the read/write light source, usually a laser diode, includes both a conventional objective lens formed of glass or plastic, with a fixed focus, and a liquid crystal lens which is electrically tunable to vary its refractive index and focal distance. The optical signal reflected from the disc is passed through this hybrid pick-up head assembly and demodulated to detect errors in the focus of the pick-up head and the tracking, and to adjust the focus by modifying the electrical signals applied to the LCD lens, and move the pick-up head in the plane of the disc to address the appropriate track. | 2009-10-01 |
| 20090245075 | OPTICAL HEAD DEVICE, OPTICAL INFORMATION DEVICE, COMPUTER, DISC PLAYER, CAR NAVIGATION SYSTEM, OPTICAL DISC RECORDER, AND VEHICLE - An optical head device compatible to different types of optical discs and capable of guaranteeing a sufficiently wide dynamic range for a low density optical disc, and the like are provided. | 2009-10-01 |
| 20090245076 | LASER DRIVING CIRCUIT, ITS RECORDING COMPENSATION METHOD AND OPTICAL-DISK APPARATUS - A laser driving circuit employing a recording compensation circuit configured to generate a light emission timing of a laser on the basis of recorded data and a recording clock signal which are supplied to the recording compensation circuit includes: a phase synchronization circuit; a skew determination circuit; and a data latching circuit. | 2009-10-01 |
| 20090245077 | Optical Recording Method and Optical Recording Apparatus - Disclosed is an optical recording method. The optical recording method includes irradiating an area where a recording mark is formed in a medium with a pulse train of laser light, and irradiating the area where the recording mark is formed with continuous-wave laser light that is continuously output. | 2009-10-01 |
| 20090245078 | LUBRICANT FOR DATA SENSING INTERFACE AND METHOD OF LUBRICATION - A data sensing interface comprising a surface of a recording medium and a tip of a data sensor positioned to sense data stored on the recording medium and a layer of polyphenyl ether disposed between the tip and the surface to function as a lubricant. A method of reducing wear within the data sensing interface includes providing a layer of polyphenyl ether between the tip of the data sensor and the surface of the recording medium to act as a lubricant. | 2009-10-01 |
| 20090245079 | OPTICAL RECORDING MEDIUM HAVING SUPER-RESOLUTION STRUCTURE FOR IMPROVEMENT OF REPRODUCING STABILITY AND NOISE CHARACTERISTIC IN LOW FREQUENCY BAND - A super-resolution optical recording medium includes a reflective layer formed on a substrate, a recording layer for recording information thereon, a super-resolution layer made of a chalcogenide semiconductor material, and a first and a second dielectric layers laminated on upper and lower surfaces of the super-resolution layer. The recording layer is made of a material that has a decomposition temperature higher than an information reproduction temperature and does not form bubble recording marks during recording, and the super-resolution layer contains one or more elements selected from the group consisting of nitrogen, oxygen, carbon, and boron. | 2009-10-01 |
| 20090245080 | PLAYER-READABLE CODE ON OPTICAL MEDIA - An optical article for playback in a player includes a plurality of optically detectable marks disposed on a surface of the optical article; wherein the plurality of optically detectable marks are in a pre-determined combination of a first state and a second state; and at least one first control logic comprising at least one sector; wherein each optically detectable mark is associated with a particular first control logic; wherein each first control logic is executed only when its associated optically detectable mark is in a pre-determined state; and wherein a customized player-readable code is determined using a combination of the plurality of optically detectable marks and their associated first control logic. A method of making the optical article, a method of customizing the optical article, a method and a system for the playback of the optical article are also included. | 2009-10-01 |
| 20090245081 | Fast Seamless Joining of Channels in a Multi-Channel Communication System - At least one channel is joined to a group of active channels in a communication system by transmitting control signals to configure respective customer premises equipment (CPE) of the active channels into a joining mode of operation, and transmitting a joining signature sequence to CPE of the joining channel over a downstream data signal path of the joining channel. A central office (CO) or other access node of the system receives correlation results from respective active channel CPE, estimates crosstalk from the joining channel into the active channels based on the correlation results, configures a precoder based on the estimated crosstalk, and adds the joining channel to the group of active channels. The channels may comprise respective subscriber lines of a DSL communication system. | 2009-10-01 |
| 20090245082 | System and Methods For Cancelling Interference In a Communication System - Systems and methods for canceling interference in a communication system are described. A signal that comprises current data from a current access point and secondary data from one or more secondary access points is received. The secondary data is demodulated using one or more secondary channel estimates if a signal metric is less than a predetermined threshold. Interference in the received signal is canceled using the demodulated secondary data if the signal metric is less than the predetermined threshold. The received signal with the interference canceled is demodulated using a current channel estimate to obtain the current data. The method for interference cancellation may use the same hardware resources and processing available for receiving data from a single access point. | 2009-10-01 |
| 20090245083 | ADAPTIVE TRANSMISSIONS FOR OPTIMIZED APPLICATION DELIVERY IN WIRELESS NETWORKS - Methods and devices of the invention relate to sending information over a wireless communications channel using an adaptive frame structure (AFS) having unequal error protection. Unequal error protection relates to a first data region of the frame being modulated with a first modulation and coding scheme (MCS) and a second data region of the frame being modulated with a different MCS typically with a higher modulation order. The first data region, modulated with a lower order MCS, may include critical data such as error checking and header/router information while the second region may include data payload for loss tolerant applications such as voice over Internet protocol (VoIP). | 2009-10-01 |
| 20090245084 | SYSTEM AND METHOD FOR COMMUNICATING DATA USING EFFICIENT FAST FOURIER TRANSFORM (FFT) FOR ORTHOGONAL FREQUENCY DIVISION MULTIPLEXING (OFDM) - A system communicates data and includes a transmitter for transmitting a communications signal that carries communications data. It includes an efficient modulator for approximating the frequencies of sine/cosine basis waveforms using complex exponential functions and adding and subtracting the complex exponential functions to generate an Orthogonal Frequency Division Multiplexed (OFDM) communications signal as a plurality of N data subcarriers that carry communications data as data symbols. A receiver receives the OFDM communications signal and includes a demodulation circuit for demodulating the OFDM communications signal using logical shifts of multiples +/−2 | 2009-10-01 |
| 20090245085 | Graph-Based Method for Allocating Resources in OFDMA Networks - A method allocates radio channel resources in an orthogonal frequency-division multiple access network including a set of base stations (BS) and a set of mobile stations (MS). For each BS, a diversity set is maintained for the sets of MS. Each BS determines possible interference at the MS based on the diversity set. A graph is constructed, in which nodes represent the sets of MS, mid each edge between a pair of nodes represents channel interference between the MS represented by the pair of nodes. A weight is assigned to each edge, which reflects interference between the two MSs connected by the edge. The interference graph is partitioned into non-overlapping clusters of nodes based on a structure of the interference graph, the potential interference, so that a sum of the weights of the edges between each cluster is maximized. Based upon the graph partitioning, the channel resources are allocated to the mobile stations in order to maximize the system capacity. | 2009-10-01 |
| 20090245086 | Graph-Based Method for Allocating Resources in OFDMA Networks - A method allocates radio channel resource in an orthogonal frequency-division multiple access network including a set of base stations (BS) and a set of mobile stations (MS). For each BS, a diversity set is maintained for the sets of MS. Each BS determines possible interference at the MS based on the diversity set. A graph is constructed, in which nodes represent the sets of MS, and each edge between a pair of nodes represents channel interference between the MS represented by the pair of nodes. A weight is assigned to each edge, which reflects interference and signal strength on the subchannel between the two MSs connected by the edge. Channel resources are allocated to the MS based on the graph. | 2009-10-01 |
| 20090245087 | Slow Speed Mute Resistance Via Selective COFDM Bin Loading - Systems and methods are presented for improving the ability to withstand slow speed mute via diversity transmission while avoiding loss in link level margin. In exemplary embodiments of the present invention, systems and methods are presented for improving resistance to slow speed muting by employing transmit diversity where a second signal is not a replica of the original signal. The second signal can be generated, for example, by using only a COFDM FFT bin that contained the cluster sync bit while setting all other bins to zero. That is, only the spectral portion of interest of the COFDM signal need be utilized. In such exemplary embodiments, the same frequency and time delay offset can be used as in current systems and methods, except that the replica COFDM signal can, for example, consist of only one populated FFT bin. | 2009-10-01 |
| 20090245088 | COMMUNICATION EQUIPMENT WHICH RECEIVES OFDM SIGNAL, OFDM-BASED WIRELESS COMMUNICATION SYSTEM AND METHOD FOR RECEIVING OFDM SIGNAL - When a receiving apparatus which employs a OFDM-based cellular wireless communication scheme detects as an excessive signal for each frame, the signal having signal intensity exceeding a reference value after a Fourier transform, a gain variable according to an excessive quantity relative to the reference value is used for each frame to control signal intensity such that the amplitude thereof is at most the reference value. | 2009-10-01 |
| 20090245089 | BIT-WIDTH MINIMIZATION SCHEME FOR WIRELESS COMMUNICATION - A technique for generating a reduced bit-width in a signal generated by a first-type modulator in a communication apparatus that includes two distinct modulators. In particular, the communication apparatus includes a first modulator adapted to generate a first modulated signal quantified to a first bit-width, a second modulator adapted to generate a second modulated signal quantified to a second bit-width that is less than the first bit-width, and a device to generate a third modulated signal comprising a combination of the first and second modulated signals. In an exemplary implementation, the first modulator includes an OFDMA modulator, the second modulator includes a CDMA, and the combining device includes an IFFT. Additionally, an apparatus for processing a communication signal includes a tasklist cache memory having a tasklist, a processor adapted to provide a task to the tasklist, and a communication module adapted to fetch the task from the tasklist, and process the communication signal based on the retrieved task. | 2009-10-01 |
| 20090245090 | Broadband Pilot Channel Estimation Using A Reduced Order FFT and a Hardware Interpolator - Within a receiver, a channel estimation mechanism involves a hardware interpolator. In a first mode, narrowband pilot values are analyzed to generate channel parameters that are supplied to the interpolator such that the interpolator generates channel estimate values. The channel estimate values are used to demodulate a tile of a frame. In a second mode, broadband pilot values are supplied to an IFFT, thereby generating time domain values. After time domain processing, an FFT is employed to generate intermediate channel estimate values. These intermediate values are analyzed to determine channel parameters, which in turn are supplied to the hardware interpolator so that the interpolator generates a larger number of channel estimate values. After phase adjustment, the channel estimate values are used in demodulation. Use of the interpolator in the broadband mode allows the FFT employed to be of a smaller order, and to consume less power and/or processing resources. | 2009-10-01 |
| 20090245091 | BUFFERED DEMOD AND DEMAP FUNCTIONS - An apparatus operable in a wireless communication system, the apparatus may include an FFT symbol buffer and a demapping device. The FFT symbol buffer can feed FFT symbol data derived from received communication signals to a channel estimation device and a shared buffer. The channel estimation device can also provide intermediate data to the shared buffer. The intermediate data may be in tile form and can be derived from the FFT symbol data. Further, the intermediate data can be stored in the shared buffer. The demapping device can extract the intermediate data from the shared buffer in various forms including sub-packet form. | 2009-10-01 |
| 20090245092 | APPARATUS, PROCESSES, AND ARTICLES OF MANUFACTURE FOR FAST FOURIER TRANSFORMATION AND BEACON SEARCHING - In embodiments, a wireless receiver employs a hardware-based Fast Fourier Transform (FFT) engine controlled by firmware. The FFT engine executes tasks stored in a task list. Each task is associated with a different portion of a signal, for example, one or more Orthogonal Frequency Division Modulated (OFDM) symbols. Each task may include configuration information for the FFT engine for configuring the engine to process the associated portion of the signal, a pointer to the portion to be processed, and another pointer to the memory for storing the output. The task list may be firmware controlled. Division of the FFT into a configurable hardware part driven by firmware to read and execute the tasks in the task list may speed up the FFT process and make it more flexible. A hardware beacon sorter may be coupled to the FFT engine to sort the sub-carriers according to their energies. | 2009-10-01 |
| 20090245093 | APPARATUS AND METHODS FOR UPDATE OF SYMBOL INFORMATION - Apparatus and methods for updating symbol information in a communication device with hardware such as a microcontroller are disclosed. The disclosed apparatus and methods employ waiting for the beginning of a symbol in a sample stream at a predetermined time. One or more programmed instructions are read at the beginning of the symbol, and then symbol information is updated based on the one or more programmable instructions and setting a time for a beginning of a next symbol. The programmed instructions consist of instruction code words that are executed by a dedicated microcontroller or similar hardware, which affords flexibility for updating symbol information, particularly for multimode communication devices operable across multiple communication technologies. | 2009-10-01 |
| 20090245094 | OUTAGE ANALYSIS SYSTEM - A device may receiving alarms identifying failures of network elements, create a site table that includes a list of sites at which the alarms are generated and a number of alarms for each of the sites, determine whether an outage has occurred based on the alarms, analyze whether the outage is a false outage based on a failure of a probe that generates the alarms, and provide a notification that includes the site table, an indication of whether the outage has occurred, or an indication whether the outage is a false outage. | 2009-10-01 |
| 20090245095 | Voice Over Internet Protocol Clarity During Degradation - Illustrative embodiments provide a computer implemented method, a data processing system and a computer program product for improving voice over Internet Protocol clarity during degradation. In one illustrative embodiment, the computer implemented method comprises monitoring a call, determining whether degradation exists; and responsive to a determination that degradation exists, applying a corrective action. The computer implemented method further comprises determining whether a quality of the call has improved and responsive to determining that the quality of the call has improved, further monitoring the call to form a monitored quality. The computer implemented method further comprises, determining whether monitored quality is acceptable, and responsive to determining monitored quality acceptable, removing the corrective action. | 2009-10-01 |
| 20090245096 | Apparatus and method for supporting hybrid automatic repeat request in a broadband wireless communication system - A broadband wireless communication system using a plurality of Frequency Allocations (FAs) is provided. A method for packet transmission of a packet of a transmitting end includes dividing one encoded packet into a plurality of parts, mapping a plurality the plurality of parts of the packet to the FAs through the plurality of different FAs transmission, when a re-transmission request is received, re-mapping the plurality of parts of the packet to the FAs such that at least one of the at least one of the plurality of parts is re-mapped to an FA that is different than an FA previously mapped thereto. Retransmitting the encoded packet by at least one of a number of subunits. | 2009-10-01 |
| 20090245097 | SIGNAL TRANSMITTING DEVICE FOR SWITCHING FORWARDING DESTINATION - A device includes: an ingress interface unit determining an output port of an input signal, adding destination information including information on the output port, and outputting the signal; two or more egress interface units; a switch unit receiving the signal including the destination information, determining a forwarding destination of the signal based on the destination information, and forwarding the signal to at least one of the egress interface units as the forwarding destination; a notifying unit notifying of, when a fault related to the output port occurs, alternative destination information including information of an alternative output port; a registration unit registering the alternative destination information in a storage unit in a way that associates the alternative destination information with the destination information; and a translation unit rewriting, when the storage unit is registered with the alternative destination information, the destination information in the signal into the alternative destination information. | 2009-10-01 |
| 20090245098 | FAILOVER/FAILBACK TRIGGER USING SIP MESSAGES IN A SIP SURVIVABLE CONFIGURATION - Provided are methods, devices, and systems for maintaining a SIP survivable network. The present invention may utilize messages, such as SIP NOTIFY messages, to trigger various network components to failover and failback based on the determined status of the SIP network. | 2009-10-01 |
| 20090245099 | REPEATER AND COMMUNICATION METHOD - A repeater for sending and receiving a routing message for changing routing information determines whether a routing message received from a first adjacent repeater which is disposed adjacent to the repeater is to be sent or not. If it is judged that the routing message is not to be sent, then the repeater generates a pseudo-routing message and sends the generated pseudo-routing message, instead of the routing message received from the first adjacent repeater, to a second adjacent repeater which is disposed adjacent to the repeater. | 2009-10-01 |
| 20090245100 | LINE ACCOMMODATING DEVICE - A line accommodating device for accommodating lines of a first communication network and a second communication network, the line accommodating device includes an interface connecting to the first communication network; a connecting block for connecting to the interface; and a plurality of relay modules connecting to the connecting block and the second communication network, respectively, each of the relay module including a reporting unit for notifying the connected relay modules via the connecting block of identification information of the relay module's own, an obtaining unit for obtaining identification information of the connected relay modules via the connecting block, and a controller including processes of determining at least one connection target of the relay module in the properly obtained identification information of the relay module by the obtaining unit, and controlling for switching the connection target of the relay module in accordance with a determined result of the determining. | 2009-10-01 |
| 20090245101 | APPARATUS AND METHOD FOR TRANSMITTING REVERSE PACKET DATA IN MOBILE COMMUNICATION SYSTEM - A method for controlling a reply signal transmission in a mobile communication system. The method includes determining whether an error is detected in the received data through the radio channel, generating a reply signal according to the error detection, determining a repetition control signal with a value that differs according to a data transmission rate, repeatedly replicating the reply signal according to the repetition control signal, and transmitting the replicated reply signal through the radio channel. | 2009-10-01 |
| 20090245102 | NETWORK BACKUP SYSTEM AND METHOD - A network backup system and method are proposed. The network backup system provides a function for automatically switching network connection lines when a network connection line fails to provide a normal connection, thereby allowing a user to keep processing data transmission via a network system, without any interruption, and data transmission efficiency of the network system to be effectively enhanced. | 2009-10-01 |
| 20090245103 | CONGESTION DETECTION METHOD, CONGESTION DETECTION APPARATUS, AND RECORDING MEDIUM STORING CONGESTION DETECTION PROGRAM RECORDED THEREON - According to an aspect of the embodiments, a congestion detection method causes a computer to function as a congestion detection apparatus connectable to a network. Packets on the network are obtained and a packet loss is detected. A packet group made up of a series of packets based on the obtained packets is extracted. A packet loss in the packet group is detected and a position in the packet group where the packet loss occurred is detected. Whether congestion is occurring is judged based on the position of the packet loss in the packet group. | 2009-10-01 |
| 20090245104 | APPARATUS AND METHOD FOR CONTROLLING BUFFERING OF AN ARRIVAL PACKET - An apparatus for controlling buffering of an arrival packet. The apparatus includes a packet buffer for temporarily storing each of one or more packets to be transmitted in association with an arrival time thereof, and a packet discard section for determining an arrival packet to be discarded or to be stored in the packet buffer, based on a discard condition defined by using a packet residence time that is calculated on the basis of one or more residence times of one or more packets staying in the packet buffer, wherein the arrival packet is defined as a packet that has newly arrived at the apparatus. | 2009-10-01 |
| 20090245105 | Method for network transmission - The method for the network transmission adjusts retransmission timeout timer (RTO) with the fuzzy rule to make the value of RTO change with network traffic. The method not only minimizes retransmission and lost packets, but also keeps utilization higher. The method is used to solve the congestion collapse problem in network transmission. | 2009-10-01 |
| 20090245106 | TRANSMISSION CONTROL METHOD AND SYSTEM THEREOF - A control server | 2009-10-01 |
| 20090245107 | SYSTEM AND METHOD OF FORECASTING USAGE OF NETWORK LINKS - An approach is provided for forecasting usage of network links. The method includes determining traffic data values for traffic over a network link that is used to provide one or more services to one or more customers, where the traffic data values are taken at intervals for a predetermined range of time. A historical data set of peak traffic data values is compiled from the traffic data values. A mathematical confidence factor is applied to the peak traffic data values to achieve modified data values, and a time-based weighting factor is applied to the modified data values to achieve further modified data values. And, a forecast trend curve of traffic over the network is calculated using the further modified data values. | 2009-10-01 |
| 20090245108 | Proactive Uplink Aggregate Maximum Bit Rate Enforcement - A system and method for enforcing uplink aggregate maximum bit rate (AMBR) at a network gateway is provided. In one embodiment, a network gateway may inform one or more network access nodes that are sending data to the network gateway that a total data flow rate on a plurality of bearers from the one or more network access nodes to the network gateway exceeds a first threshold. Responsive to being informed that the total data flow rate exceeds the first threshold, the one or more network access nodes take an action to decrease the data flow rate from a plurality of user equipment that are sending data to the one or more network access nodes. | 2009-10-01 |
| 20090245109 | METHODS, SYSTEMS AND COMPUTER PROGRAM PRODUCTS FOR DETECTING FLOW-LEVEL NETWORK TRAFFIC ANOMALIES VIA ABSTRACTION LEVELS - Methods, systems and computer program products for detecting flow-level network traffic anomalies via abstraction levels. An exemplary embodiment includes a method for detecting flow-level network traffic anomalies in a computer network, the method including obtaining current distributions of flow level traffic features within the computer network, computing distances of the current distributions' components from a distributions model, comparing the distances of the current distributions to distance baselines from the distributions model, determining if the distances are above a pre-determined thresholds and in response to one or more of the distances being above the pre-determined thresholds in one or more distributions, identifying the current condition to be abnormal and providing indications to its nature. | 2009-10-01 |
| 20090245110 | SYSTEM AND METHOD FOR IMPROVING EQUALIZATION IN A HIGH SPEED SERDES ENVIRONMENT - A method and accompanying system are disclosed for tuning each channel of a high-speed SerDes link interface arranged in a configuration linking a local side to a remote side. The method includes transmitting a flow control packets from the local side to the remote side to change remote side transmission characteristics in a link channel; monitoring signal eye characteristics in the link channel; transferring additional flow control packets to adjust the remote side transmission characteristics; and processing the signal eye characteristics at the local side to generate the remote side transmission characteristics for the link channel. | 2009-10-01 |
| 20090245111 | APPARATUS, SYSTEM, AND METHOD FOR MANAGING NETWORK BANDWIDTH - An apparatus, system, and method are disclosed for managing network bandwidth. A monitor module monitors traffic of a plurality of peer computers over a Transmission Control Protocol/Internet Protocol (TCP/IP) network. A detection module detects traffic exceeding a traffic threshold for the network. A delay module delays issuing each TCP/IP acknowledge signal for a specified delay interval in response to detecting the traffic exceeding the traffic threshold. | 2009-10-01 |
| 20090245112 | COMMUNICATION DEVICE, COMMUNICATION SYSTEM, COMMUNICATION CONTROL METHOD AND RECORDING MEDIUM - The present invention provides a communication system that is capable of performing band control on a LAG group between devices. A communication system according to the present invention includes multiple communication devices (M1, M2, and E1 to E3). Each of the communication devices (E1 to E3) manages output ports of a LAG (Link Aggregation) group between the devices (M1 and M2) for each LAG group. Each of the communication devices (E1 to E3) controls flows transmitted from the output ports for each LAG group, when traffic of the output ports deviates. | 2009-10-01 |
| 20090245113 | LOAD BALANCER, NETWORK SYSTEM, LOAD BALANCING METHOD, AND PROGRAM - In a load balancer and a load balancing method, if load on a server becomes higher and the server enters a high-load state, processing is transferred from the server to a second server. In a load balancer, for user terminals registered to SIP servers, a server as a register request destination is dynamically changed according to load on the user terminals, which makes it possible to transfer the processing to a low-load SIP server. | 2009-10-01 |
| 20090245114 | METHODS FOR COLLECTING AND ANALYZING NETWORK PERFORMANCE DATA - Techniques are described to collect and analyze network performance data. Servers are modified so connection data, including data re-transmitted, is stored on each server of a data center that serves data to clients. Each server then sends the connection data stored to a collection server that aggregates the data. The collection server sorts the connection data from the servers based upon the data center where the server is located and clusters of the location or routing of the client. The location of the client may be based on a geographic mapping of the client, routing by the autonomous system number, or an IP address prefix. A high rate of re-transmissions from a particular data center to a particular client location may indicate problems in a certain area of the network. The routing of data transmissions may be altered to a different data center or by assigning a different routing. | 2009-10-01 |
| 20090245115 | METHOD AND SYSTEM FOR PORVIDING HOLISTIC, INTERATIVE, RULE-BASED TRAFFIC MANAGEMENT - An approach is provided for monitoring traffic over a network link that is used to provide one or more services to one or more customers. A determination is made regarding whether a failure mode of the network link has occurred by comparing the monitored traffic to predetermined bandwidth criteria. A corrective action to be taken in response to the failure mode is selected, where selection of the corrective action to be taken is determined based on the failure mode. Further corrective actions selected iteratively from a predetermined list of successive actions are applied until the failure modes are addressed. | 2009-10-01 |
| 20090245116 | METHOD FOR MOBILE NETWORK OPERATIONAL STATE INDICATION - A method to indicate a transitional operational state of a communication link is provided. The method includes indicating the operational state of the communication link is operable, transmitting data between a communication management unit and an endpoint via the communication link, and determining if the transmitted data is received at the endpoint. The method also comprises continuing to indicate the operational state of the communication link is operable when the transmitted data is received at the endpoint and determining if a transport layer has timed out when the transmitted data is not received at the endpoint within a pre-selected time. The method also comprises indicating the operational state of the communication link is transitional when the transport layer has not timed out and the transmitted data is not received at the endpoint within the pre-selected time. | 2009-10-01 |
| 20090245117 | DETECTION OF NETWORK IMPAIRMENTS THROUGH TILT-NORMALIZED MEASUREMENT DATA - A method and apparatus are provided for detecting network impairments through tilt-normalized measurement data, the method including: collecting data for a network signal; computing a best-fit tilt for the collected data; performing tilt-normalization of the collected data responsive to the computed best-fit tilt; and determining whether the tilt-normalized data crosses a threshold, and if so, pattern matching the tilt-normalized data to detect a network impairment; and the apparatus including: an input unit for collecting data from a network signal; a tilt unit connected to the input unit for computing a best-fit tilt for the collected data and performing tilt-normalization of the collected data responsive to the computed best-fit tilt; and a pattern matching unit connected to the tilt unit for determining whether the tilt-normalized data crosses a threshold, and if so, pattern matching the tilt-normalized data to detect at least one network impairment. | 2009-10-01 |
| 20090245118 | SYSTEM AND METHOD FOR PROVIDING QUALITY OF SERVICE MAPPING - A system and method for providing quality of service mapping including a first receiver to receive location data of a mobile device, a transmitter to transmit the location data to one or more servers of a service provider, and a second receiver to receive signal quality information based on the location data. The signal quality map be used to provide at least a signal quality map, a coverage area map, an availability map, and turn-by-turn directions for optimized signal quality or availability, based on the signal quality information. The signal quality map be also be used to improve overall service in the event of signal loss or signal degradation. | 2009-10-01 |
| 20090245119 | COMMUNICATIONS SYSTEM FOR EXCHANGING SPECTRUM SENSING MEASUREMENTS THROUGH A DROP BOX AND METHOD OF USING SAME - A communications system and method for exchanging spectrum usage information through a drop box ( | 2009-10-01 |
| 20090245120 | Ethernet Physical Layer Transceiver with Auto-Ranging Function - A method in an Ethernet physical transceiver device for selecting a transmission speed includes resetting a first register and a count value, establishing a link with a remote network device at a first transmission speed, incrementing the first register to a first value, monitoring the link by counting the number of detected false carrier events in the incoming transmission as the count value, and at the expiration of a first time period, comparing the count value of false carrier events to a predetermined threshold. The method continues with reducing the first transmission speed when the count value exceeds the predetermined threshold, maintaining the first transmission speed when the count value is less than the predetermined threshold, and when the first register has a first value, incrementing the first register to a second value and repeating the steps of monitoring the link to reducing the first transmission speed. | 2009-10-01 |
| 20090245121 | METHOD AND APPARATUS FOR TRANSMITTING AND RECEIVING A QUICKCHANNELINFO BLOCK IN ACTIVE STATE IN WIRELESS COMMUNICATION SYSTEM - A method and apparatus for transmitting and processing a QuickChannelInfo block is described. It is determined if a superframe is with odd superframe index. A QuickChannelInfo block is transmitted in every superframe with an odd superframe index. The contents of the QuickChannelInfo block are changed in accordance with the QuickChannelInfo Validity field of the QuickChannelInfo block. It is determined if multi-carrier mode is MultiCarrierOn. The QuickChannelInfo block is transmitted on each carrier. The QuickChannelInfo block is transmitted over the communication. The QuickChannelInfo block is processed after the QuickChannelInfo block is received over a communication link. | 2009-10-01 |
| 20090245122 | SYSTEM AND METHOD FOR MONITORING GLOBAL NETWORK PERFORMANCE - The present invention provides a system and method for monitoring global network performance across a public Wide Area Network (WAN), and/or private networking through a secure IPSec gateway, and providing a user interface for performance metrics through a secure Internet browser. | 2009-10-01 |
| 20090245123 | METHOD FOR SIMULTANEOUSLY ACCESSING CIRCUIT SERVICES AND PACKET SERVICES IN A CELLULAR MOBILE RADIO SYSTEM - A method for simultaneous access to circuit services and packet services in a cellular mobile radio system comprising second generation cells and third generation cells, in which method, if a packet or a circuit connection is required by a terminal already having a circuit or a packet connection set up in a second generation cell, the method determines whether a change of cell to a third generation cell is possible and, if so, effects said change of cell in order to allow said circuit and packet connections simultaneously in a third generation cell. | 2009-10-01 |
| 20090245124 | Receiving device, clock synchronizing method, and computer program - There is provided a receiving device including: a receiving unit that receives a packet stream; an oscillator; a measuring unit that performs a measuring operation; an acquiring unit that reads the newest time stamp read from the packet stream received by the receiving unit and the newest measurement value measured by the measuring unit with a predetermined period, from a point of time when the packet stream starts to be received; a calculating unit that calculates an accumulation value of the time stamps and the measurement values acquired by the acquiring unit; a comparing unit that compares a difference between the accumulation value of the time stamps and the accumulation value of the measurement values calculated by the calculating unit, and a value corresponding to a network jitter; and a frequency control unit that controls the oscillation frequency of the oscillator based on the comparison result by the comparing unit. | 2009-10-01 |
| 20090245125 | WIRELESS COMMUNICATION SYSTEM FOR REDUCING POWER CONSUMPTION WHEN RECEIVING A FRAME HAVING A LOW RECEPTION SUCCESS POSSIBILITY - A header analysis unit reads a parameter showing a format of a digital signal contained in a received signal. A received signal quality measurement unit measures a quality of the received signal. An awake/sleep control unit controls restart and sleep of a reception unit based on data from the header analysis unit and the received signal quality measurement unit. The awake/sleep control unit stops a reception operation for a period corresponding to a frame length when the quality of the leading portion of the received signal is less than a predetermined threshold. | 2009-10-01 |
| 20090245126 | Communication Apparatus, Communication Method, and Recording Medium Storing Program - When a communication apparatus (server device) that includes wireless access means and can send content data by using the wireless access means starts sending content data, it calculates a communication band that remains available for the server device to perform communication, so that any content that has a rate equal to or greater than the remaining communication band may not be publicized open to and may not hence be sent to a client device. | 2009-10-01 |
| 20090245127 | Application Service Level Mediation and Method of Using Same - A method and apparatus for using an application layer demarcation point are described. In one embodiment, the method comprises monitoring end-to-end performance of a network application at an application demarcation point in a network, and mediating between provider infrastructure and customer infrastructure based on results of monitoring. | 2009-10-01 |
| 20090245128 | INTEGRATED SWITCH TAP ARRANGEMENT WITH VISUAL DISPLAY ARRANGEMENT AND METHODS THEREOF - An arrangement in a network device for monitoring network traffic is provided. The arrangement includes a set of network ports, which includes a set of input network ports for receiving the network traffic and a set of output network ports for outputting the network traffic from the network device. The arrangement also includes a switch chip, wherein the switch chip is configured at least for analyzing the network traffic. The arrangement further includes a set of monitoring ports, which is configured to receive the network traffic from the set of network ports. The arrangement yet also includes a tap module, which is configured at least for intercepting at least part of the network traffic flowing through the network device and forwarding at least part of the network traffic to at least one of the set of monitoring ports. | 2009-10-01 |
| 20090245129 | Call Admission Control Method - A method and arrangement for controlling call admissions to a path in a packet-switched network. A restriction factor is determined on the basis of a load condition on the path as defined by indicators such as jitter and packet loss. The restriction factor is adjusted based on a previous load condition and a current load condition. By determining the load primarily based on measured jitter, the arrangement reacts to congestion proactively before experiencing packet loss. The arrangement may be implemented entirely in an edge node of the network, and thus does not require additional mechanisms within the network such as signaling and resource reservation. | 2009-10-01 |
| 20090245130 | Systems and Methods for Intelligent Policy Enforcement in Access Networks - Systems and methods of intelligent policy enforcement in access networks are disclosed. One such method is implemented in a network device and comprises updating a traffic history with information associated with an incoming packet arriving from or destined to a subscriber link. The method also comprises calculating a drop probability for a next traffic instant and predicting a traffic rate for each of a plurality of flows on the subscriber link. The method also comprises determining whether the incoming packet conforms to a traffic policy associated with the incoming packet. The method also comprises determining whether surplus bandwidth is available on the subscriber link. The method also comprises forwarding the packet responsive to the determination that the incoming packet does not conform and that surplus bandwidth is available. | 2009-10-01 |
| 20090245131 | Remotely controlled gateway management with security - A system and method are disclosed for remotely controlled gateway ( | 2009-10-01 |
| 20090245132 | DYNAMIC VLAN IP NETWORK ENTRY - Systems and methods for tagging packets in a wireless network are described. The methods can comprise detecting initial entry of subscriber equipment into a wireless network at a first base station and generating a network tag for the subscriber equipment, the network tag associating the subscriber equipment with the first base station. The tag can be distributed to other base stations and, upon reentry of the subscriber equipment to the network, a network connection can be configured for the subscriber equipment based on the tag. Detecting initial entry includes receiving a network entry packet a including a unique identifier associated with the subscriber equipment. The network connection can be configured by providing an IP address assigned to the subscriber equipment and the IP address may be distributed through a relay agent instantiated for the network connection. The network tag can be an IEEE 802.1q tags, MPLS tags, etc. | 2009-10-01 |
| 20090245133 | BROADCAST/MULTICAST BASED NETWORK DISCOVERY - Embodiments of the invention relate to apparatus, system and method for use of WLAN access enabled mobile devices such as notebooks and handheld communication devices. In particular, embodiments of the invention relate to methodology whereby WiFi enabled devices can automatically select the appropriate service provider, in a power efficient manner, thereby taking advantage of different services offered by different service providers. | 2009-10-01 |
