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| 20080250816 | Optical fiber, optical fiber connecting method, and optical connector - An optical fiber which, at an optical fiber connecting end having a plurality of voids around the periphery of a core, has a light-permeable substance, such as a resin or glass whose refractive index is lower than that of quartz type substances, filled in the voids adjacent to the connecting end. An optical fiber connecting section where an optical fiber having a plurality of voids in a clad around the periphery of a core is connected to another optical fiber, wherein the optical fiber is connected end-to-end to aforesaid another optical fiber through a refractive index matching agent whose refractive index at the minimum temperature in actual use is lower than that of the core. | 10-16-2008 |
| 20080253726 | Optical fiber, optical fiber connecting method, and optical connector - An optical fiber which, at an optical fiber connecting end having a plurality of voids around the periphery of a core, has a light-permeable substance, such as a resin or glass whose refractive index is lower than that of quartz type substances, filled in the voids adjacent to the connecting end. An optical fiber connecting section where an optical fiber having a plurality of voids in a clad around the periphery of a core is connected to another optical fiber, wherein the optical fiber is connected end-to-end to aforesaid another optical fiber through a refractive index matching agent whose refractive index at the minimum temperature in actual use is lower than that of the core. | 10-16-2008 |
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| 20090082920 | ON-VEHICLE COMMUNICATION DEVICE - An on-vehicle communication device according to the present invention includes initial signal estimating unit | 03-26-2009 |
| 20100049819 | VEHICLE COMMUNICATION DEVICE - A vehicle communication device for using a plurality of applications in an inter-vehicle communication, and performing a control to avoid congestion of its own vehicle and other vehicles. The vehicle communication device includes a plurality of application units performing the inter-vehicle communication, a lower protocol unit transmitting and receiving data between vehicles, and a middleware unit intervening between the application units and the lower protocol unit. The middleware unit includes a transfer service processing unit, a communication control service unit, and a transmission/reception control processing unit. The communication control service unit controls a congestion avoiding process of its own vehicle and other vehicles based on application priority received for each of the application units, priority for each vehicle, and channel usage rate obtained from the lower protocol unit. | 02-25-2010 |
| 20100141382 | REMOTE CONTROL SYSTEM FOR CAR-MOUNTED DEVICE - A remote control system for a car-mounted device capable of realizing communication performance required for a keyless function and communication performance required for a smart function while suppressing increase in circuit scale. The remote control system includes a portable unit and an in-car unit. The portable unit includes: a function judgment mechanism judging whether the keyless function or the smart function is used; an amplification mechanism controlling transmission power in response to a result of judgment obtained at the function judgment mechanism; and a system clock generator controlling a transmission band in response to a result of judgment obtained at the function judgment part. The in-car unit includes: an in-car function judgment mechanism judging whether the keyless function or the smart function is used; and in-car system clock generator controlling a receiving band in response to a result of judgment obtained at the in-car function judgment mechanism. | 06-10-2010 |
| 20110254699 | VEHICLE-MOUNTED NARROW-BAND WIRELESS COMMUNICATION APPARATUS AND ROADSIDE-TO-VEHICLE NARROW-BAND WIRELESS COMMUNICATION SYSTEM - A vehicle-mounted narrow-band wireless communication apparatus includes: information storing/managing section | 10-20-2011 |
| 20120119589 | LINE ACCOMMODATING APPARATUS AND TEMPERATURE CONTROL METHOD - When the interior temperature inside a line accommodating apparatus ( | 05-17-2012 |
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| 20090245384 | INFORMATION PROCESSING APPARATUS AND INFORMATION PROCESSING METHOD - Disclosed herein is an information processing apparatus including: a partial decoding block configured to generate picture data by partially decoding a reversibly encoded picture code stream; an irreversible encoding block configured to encode irreversibly the picture data generated by the partial decoding block; and a control section configured to control the partial decoding block to determine the picture code stream part to be decoded in such a manner that a target compression rate of the picture data generated by the partial decoding block constitutes the compression rate corresponding to a target code quantity for the irreversible encoding block. | 10-01-2009 |
| 20090245668 | PICTURE ENCODING APPARATUS AND METHOD, PROGRAM AND RECORDING MEDIUM - An apparatus and a method for compressing a picture by wavelet transform and entropy coding, in which the processing load of arithmetic coding may be relieved and rate control may be carried out effectively, while still maintaining the picture quality. An encoding object prediction unit predicts bitplanes to be encoded and extracts only those bitplanes which are to be encoded. An EBCOT unit generates an encoding pass from one bitplane to be encoded to another to execute arithmetic coding. In controlling the code volume to a target code volume, a rate controller sums the arithmetic codes in a sequence from the arithmetic code with the highest bit position in the totality of the code blocks of an input picture to the arithmetic code of the lowermost bit, from one bitplane to another or from one encoding pass to another, and halts the summation when the predetermined target code volume is exceeded. | 10-01-2009 |
| 20100092097 | INFORMATION PROCESSING DEVICE AND METHOD - Disclosed herein is an information processing device including a bitplane expanding section, a coding section, a selecting section, and a selection controlling section. The bitplane expanding section expands image data into bitplanes as sets of bits at identical places in each unit of a predetermined number of pieces of data each having a bit depth of a plurality of bits. The coding section codes the image data expanded by the bitplane expanding section in each the bitplane in predetermined order. The selecting section selects compressed data and non-compressed data as a result of coding of the image data. The selection controlling section controls the coding section to stop a coding process and selecting the non-compressed data for a bitplane situated at a position subsequent to a bitplane for which the non-compressed data is selected by the selecting section in the predetermined order. | 04-15-2010 |
| 20100166053 | INFORMATION PROCESSING DEVICE AND METHOD - The present invention relates to an information processing device and method, program, and communication system, whereby encoded data can be transmitted with low delay. A data control unit | 07-01-2010 |
| 20100254460 | INFORMATION PROCESSING APPARATUS AND METHOD - An information processing apparatus includes: a synthesis filter unit configured to execute synthesis filtering for coefficient data of each subband, obtained by decoding a code stream of a reversibly-encoded image and performing band division, in each predetermined number of lines or in each predetermined block to obtain baseband image data on a line basis; a storage unit configured to store the baseband image data obtained by the synthesis filter unit; an analysis filter unit configured to read the baseband image data stored in the storage unit and execute analysis filtering for the image data to divide the image data up to a predetermined division level; and a control unit configured to control the analysis filter unit to execute analysis filtering as soon as the amount of the baseband image data stored in the storage unit reaches a data amount allowing analysis filtering. | 10-07-2010 |
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| 20080266551 | Multiphoton-excitation laser scanning microscope - A multiphoton-excitation laser scanning microscope capable of efficiently collecting fluorescence emitted from a specimen to acquire a brighter multiphoton-excitation fluorescence image is provided. This multiphoton-excitation laser scanning microscope includes a multiphoton-excitation laser light source for emitting ultrashort pulsed laser light, a light-scanning unit configured to scan a specimen with the ultrashort pulsed laser light emitted from the multiphoton-excitation laser light source in two dimensions, an objective lens configured to focus the ultrashort pulsed laser light scanned by the light-scanning unit on the specimen, a collector lens disposed opposite the objective lens, with the light-scanning unit disposed therebetween, to collect fluorescence emitted from the specimen, and a light detector configured to detect the fluorescence collected by the collector lens. The collector lens has a higher numerical aperture and a larger field number than the objective lens. | 10-30-2008 |
| 20090200680 | SEMICONDUCTOR DEVICE - A memory card has a wiring board, four memory chips stacked on a main surface of the wiring board, and a controller chip and an interposer mounted on a surface of the memory chip of the uppermost layer. The memory chips are stacked on the surface of the wiring board so that their long sides are directed in the same direction as that of the long side of the wiring board. The memory chip of the lowermost layer is mounted on the wiring board in a dislocated manner by a predetermined distance in a direction toward a front end of the memory card so as not to overlap the pads of the wiring board. The three memory chips stacked on the memory chip of the lowermost layer are disposed so that their short sides on which pads are formed are located at the front end of the memory card. | 08-13-2009 |
| 20090230541 | SEMICONDUCTOR DEVICE AND MANUFACTURING METHOD OF THE SAME - A semiconductor device in which a chip is embedded in a wiring board and bump electrodes formed over the front surface of the semiconductor chip are flip-chip coupled to wiring formed in the wiring board and the entire back surface of the semiconductor chip functions well as a back electrode and a method of manufacturing the semiconductor device. A semiconductor chip is embedded inside a wiring board. The semiconductor chip is flip-chip coupled (face down) to a base substrate as the core layer of the wiring board through bump electrodes. A conductive film is formed over the semiconductor chip's surface reverse to the surface over which bump electrodes are formed. The conductive film functions as a back electrode which supplies a reference voltage to the integrated circuit in the semiconductor chip. The conductive film is electrically coupled to third-layer wiring through vias. | 09-17-2009 |
| 20110096393 | MICROSCOPE CONNECTING UNIT AND MICROSCOPE SYSTEM - Three or more devices can be connected to a microscope and can be used simultaneously. Provided is a microscope connecting unit including a microscope connection port that is connected to a microscope used to observe a sample; three or more unit connection ports to which a stimulating unit that irradiates the sample with light or a confocal observation unit or an image capturing unit that detects light generated at the sample is connectable; and two or more light-path combining units that are disposed between the microscope connecting port and the unit connection ports and that combine light paths optically connecting the microscope with the confocal observation unit, the stimulating unit, and the image capturing unit. | 04-28-2011 |
| 20110233788 | SEMICONDUCTOR DEVICE - A memory card has a wiring board, four memory chips stacked on a main surface of the wiring board, and a controller chip and an interposer mounted on a surface of the memory chip of the uppermost layer. The memory chips are stacked on the surface of the wiring board so that their long sides are directed in the same direction as that of the long side of the wiring board. The memory chip of the lowermost layer is mounted on the wiring board in a dislocated manner by a predetermined distance in a direction toward a front end of the memory card so as not to overlap the pads of the wiring board. The three memory chips stacked on the memory chip of the lowermost layer are disposed so that their short sides on which pads are formed are located at the front end of the memory card. | 09-29-2011 |
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| 20090164647 | INTERFACE APPARATUS, EXCHANGE APPARATUS EQUIPPED WITH THE INTERFACE APPARATUS AND CONTROL METHOD FOR USE IN THE INTERFACE APPARATUS - According to one embodiment, an interface apparatus includes a connector capable of connecting a plurality of SIP terminals and a SIP network to a port, a first processor which executes an exchange processing to the plurality of SIP terminals, a second processor which executes an exchange processing to the SIP network, a memory which stores a terminal ID for specifying each of the plurality of SIP terminals, and a sorting module configured to refer to a stored content of the memory based on sender identification information in a control signal relating to an exchange received by the connector, and sort the control signal to the first processor or the second processor based on a reference result of the memory. | 06-25-2009 |
| 20090300107 | Presence Service Provision System and Server Unit Thereof - According to one embodiment, a presence service provision system comprises terminal devices configured to be any of a discloser and a requester of presence information and a server for distributing to the requester distribution information including the presence information to be individually notified from the discloser upon occurrence of an event. The terminal devices include a notification module notifies operation information showing a user's operation posed the event to the server upon notifying the presence information. The server includes an extended information database, a generation module and a distribution module. The extended information database stores extended presence information in which the notified presence information is associated with the operation information. The generation module generates extended distribution information in which the distribution information is associated with the operation information acquired from the extended information database. The distribution module distributes the extended distribution information to the requester. | 12-03-2009 |
| 20100329436 | TELEPHONE EXCHANGE APPARATUS AND INCOMING CALL TRANSFER CONTROL METHOD OF THE APPARATUS - According to one embodiment, a telephone exchange apparatus includes a memory and a calculation module and a controller. The memory stores data associating a caller ID specifying a caller and a recipient ID specifying a transfer operation source with frequency of transfer for each of at least one of a telephone terminal and a group to be a transfer destination. The calculation module calculates a percent of transfer from frequency of transfer in a predetermined period and store the percent of transfer for each of the caller ID in the memory. The controller refers the memory based on the caller ID and the recipient ID included in an incoming call, and performs incoming call control to at least one of a telephone terminal and a group corresponding to a transfer destination including a percent of transfer which is larger than a predetermined value based on a reference result. | 12-30-2010 |
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| 20090052074 | Perpendicular magnetic recording media and magnetic storage apparatus using the same - Embodiments of the present invention provide a perpendicular magnetic recording media having excellent resolution, signal to noise ratio (S/N), and a small adjacent track erasure. According to one embodiment, underlayers for controlling the orientation and segregation of a magnetic layer, a magnetic layer including an oxide and an alloy of magnetic materials mainly composed of Co, Cr, and Pt, and a ferromagnetic-metal layer which does not contain oxygen, are formed over a substrate. The magnetic layer has at least two layers including ferromagnetic grains and oxides, a first magnetic layer, which is the part of the magnetic layer closer to the substrate, has grain boundaries mainly composed of Cr oxide and at least one oxide selected from Si, Ti, Nb, and Ta, and grain boundaries of a second magnetic layer at the ferromagnetic-metal layer side includes at least one oxide selected from Si, Ti, Nb, and Ta in which Cr oxide is less than the first magnetic layer. | 02-26-2009 |
| 20090147403 | Perpendicular magnetic recording medium and magnetic recording system - Embodiments in accordance with the present invention provide a perpendicular magnetic recording medium where the signal to noise (S/N) of the media is improved. In a particular embodiment, a magnetic layer is applied to the recording magnetic layer of the recording medium in which the normalization crystal grain cluster size (Dn) is controlled so as to satisfy 1≦Dn≦1.9, where the mean value of the recording crystal grain cluster area obtained by summation of the area of neighboring grains having the same crystal orientation in both the a-axis and the c-axis of the recording layer crystal grain of the magnetic layer is normalized by the mean grain size. | 06-11-2009 |
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| 20100238494 | PRINTER DRIVER, STORAGE MEDIUM, AND INFORMATION PROCESSING APPARATUS - A printer driver includes a plurality of modules, an interface unit that accepts the addition of plug-in including one or more additional modules for realizing a predetermined function, and a storage unit that stores setting information that defines information related to a partial process for realizing the predetermined function of the plug-in. The plurality of modules performs a process that is the partial process for realizing the predetermined function and cannot be realized in the additional modules included in the plug-in in accordance with the setting information. | 09-23-2010 |
| 20100318984 | Information processing apparatus, installer program, and recording medium - An image forming apparatus includes a printer driver; a first software-identifier storage unit that stores therein a first software identifier that identifies software of a printing device, in which a second plugin for enabling the printing device to implement a feature corresponding to a feature of a first plugin to be installed in the printer driver, can be installed; an installable plugin determining unit that compares the first software identifier with the second software identifier and determines whether the second plugin can be installed in the software of the printing device; and an installing unit that installs, if it is determined that the second plugin can be installed, the first plugin in the printer driver. | 12-16-2010 |
| 20110058205 | Printer driver, information processing apparatus, and computer-readable recording medium recording therein printer driver - A printer driver includes: a core driver performing a constraining process to a print setting based on function information containing a constraint for the print setting and stored in a storage unit, and being enabled to accept an addition of a plug-in, wherein the core driver expands basic function information corresponding to the core driver onto a memory as information having a tree structure, when plug-in function information corresponding to the plug-in is stored in the storage unit, the core driver expands the plug-in function information on the memory as information having a tree structure, the core driver merges the information expanded from the plug-in function information into the information expanded from the basic function information, and the core driver performs the constraining process to a print setting based on a parent-and-child relation in a tree structure of the information thus merged. | 03-10-2011 |
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| 20080306102 | NOVEL SPIROOXYINDOLE COMPOUNDS AND DRUGS CONTAINING SAME - A Spiro oxindole compound represented by formula (1) of the present invention or salt thereof, or their solvate shows a superior inhibitory effect of 11β-hydroxysteroid dehydrogenasel, and is useful as an agent for preventing or treating a disease that involves 11β-hydroxysteroid dehydrogenasel (in particular, diabetes, insulin resistance, diabetes complication, obesity, dyslipidemia, hypertension, fatty liver, or metabolic syndrome). | 12-11-2008 |
| 20090023944 | OPTICALLY ACTIVE PPAR-ACTIVATING COMPOUND INTERMEDIATE AND METHOD FOR PRODUCING SAME - The present invention provides a production intermediate for compound (A-1) and a method for producing the intermediate at high yield and high optical yield. | 01-22-2009 |
| 20090076280 | PROCESSES FOR PRODUCTION OF OPTICALLY ACTIVE PPAR-ACTIVATING COMPOUNDS AND INTERMEDIATES FOR PRODUCTION THEREOF - The invention provides a process for producing an optically active butyric acid compound and a production intermediate therefor at high yield and high purity. | 03-19-2009 |
| 20090118535 | PROCESS FOR PRODUCING OPTICALLY ACTIVE ESTER - A process for producing an optically active 2-hydroxybutyric ester (1), characterized by including reacting an optically active 2,3-epoxybutyric ester (2) with a thiol in the presence of scandium trifluoromethanesulfonate or ytterbium trifluoromethanesulfonate, to thereby produce Compound (3), and subjecting Compound (3) to desulfurization reaction: | 05-07-2009 |
| 20100075943 | 1-ADAMANTYLAZETIDIN-2-ONE DERIVATIVES AND DRUGS CONTAINING SAME - It is to provide a novel compound useful for preventing and/or treating diseases that involves 11β-hydroxysteroid dehydrogenase 1, particularly diabetes, insulin resistance, diabetes complication, obesity, dyslipidemia, hypertension, fatty liver, or metabolic syndrome. It is an 1-adamantyl azetidin-2-one derivative represented by the following general formula (1) or salt thereof, or their solvate. | 03-25-2010 |
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| 20100302140 | Operation Device - Provided is an operation device to be held by a user with one hand when used. The operation device includes: a recessed portion formed at a position at which at least one of a thumb and fingers is placed when the user holds the operation device; and a main button which is disposed at a bottom of the recessed portion and has a top surface adjacent to a rim portion forming a side surface of the recessed portion. | 12-02-2010 |
| 20110195783 | OPERATION DEVICE - Provided is an operation device, including: a magnetic sensor ( | 08-11-2011 |
| 20110195784 | INFORMATION PROCESSING APPARATUS, CONTROL METHOD THEREFOR, OPERATION DEVICE, AND INFORMATION STORAGE MEDIUM - Provided is an information processing apparatus, which is connected to an operation device including a magnetic sensor and an operation button used for operation input by a user, and is configured to: receive, from the operation device, a detection result of the magnetic sensor and information indicating an operation performed by the user with respect to the operation button; determine whether or not the operation button has been operated, by using the received information indicating the operation; and, when it is determined that the operation button has been operated, restrict a posture of the operation device from being identified by using the detection result of the magnetic sensor. | 08-11-2011 |
| 20110239233 | DISK APPARATUS - A carrying section of a disk apparatus includes a pair of arms disposed in a substantially symmetrical relationship with respect to the carrying direction of a disk in the proximity of the opposite ends of an opening formed in a housing such that the arms pivot around end portions thereof adjacent the opening in synchronism with each other in directions toward and away from each other, and a biasing element which biases the arms in a direction in which ends of the arms remote from the opening approach each other. The arms individually have rollers provided thereon which grip and carry the disk to a predetermined position. At least one of the rollers is rotated by the driving member to carry the disk. A controller includes a state decision section which decides a carrying state of the disk and a driving control section which stops, if it is decided that part of the disk is carried out to the outside of the housing, the driving of the driving means in a state wherein the rollers grip the disk. First and second disks having different diametrical sizes are available as the disk, and the distance between the rollers is smaller than the diametrical size of the second disk until the second disk contacts with the rollers. | 09-29-2011 |
| 20110263329 | Operating Device - Provided is an operation device which allows various kinds of operation information to be input to a main body thereof as needed without unnecessarily increasing the weight of the operation device. The operation device includes: the main body having a shape elongated from one end to another end; a light emitting member provided to the one end of the main body; and a connection portion provided to the other end of the main body, to which an arbitrary one of a plurality of other operation devices is to be connected. | 10-27-2011 |
| 20110266231 | CONTROLLER STAND DEVICE AND CONTROLLER STAND SYSTEM - To provide a controller stand device capable of stably standing any of two controllers having different thickness. A controller stand device has a pedestal having a support concave formed thereon, the support concave having a size large enough to accept the first controller inserted therein. The controller stand device has a support member to be pressed onto the external surface of the controller inserted in the support concave to thereby stand the controller. The support member is capable of moving between a first support position in which the support member is pressed onto the external surface of the first controller when the first controller is inserted in the support concave and a second position in which the support member is pressed onto the external surface of the second controller when the second controller is inserted in the support concave. | 11-03-2011 |
| 20110316770 | Operation Device - To provide an operation device for use by a user by holding in one hand, comprising a thumb operating area defined on a surface of the enclosure of the operation device, where an operation member to be operated by the user, using his/her thumb, while holding the operation device is provided; an inclination operation member including a stick part projecting from the thumb operating area, for being operated by the user by inclining the stick part, using the thumb; and an operation button provided on the surface of the enclosure in a position opposed to the thumb operating area, being capable of being pressed by the user, using another finger, in a direction intersecting a direction toward the inclination operation member. | 12-29-2011 |
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| 20090204802 | DISTRIBUTED INFORMATION GENERATOR AND RESTORING DEVICE - Check data corresponding to distributed confidential information is generated, and the confidential information and check data are distribution-coded. When the confidential information is restored, the confidential information and check data are restored and it is determined whether or not the restored check data correspond to the restored confidential information. If the data correspond to the information, the information is determined to be correct and is output. If not, the information is judged to be false (i.e., tampered distributed information), and a symbol indicating that falsity has been detected is output. | 08-13-2009 |
| 20090296923 | Signature generation apparatus and signature verification apparatus - A signature generation apparatus generates a signature for a message m from the i-th user, and computes any two or three of a[1] | 12-03-2009 |
| 20100287366 | DISTRIBUTED INFORMATION GENERATION APPARATUS, RECONSTRUCTION APPARATUS, RECONSTRUCTION RESULT VERIFICATION APPARATUS, AND SECRET INFORMATION DISTRIBUTION SYSTEM, METHOD, AND PROGRAM - A shared information creating device capable of detecting false alteration of shared information with high probability even if a traitor has shares the number of which is above a threshold and creating shared information whose data size is smaller than that of secret information. A recovering device, a recovery result verifying device, and a secret information sharing system, program, and method are also provided. The shared information creating device generates a polynomial F in which secret information s is embedded, outputs a shared secret information, generates a polynomial G in which the output of when a fixed value t is substituted in the polynomial F is embedded as secret information, and creates shared secret information. A recovering device receives k sets of shared secret information to generate a polynomial F′, and receives k sets of shared shared secret information to generate a polynomial G′. When the value embedded as secret information in the polynomial G′ is equal to the output of when the fixed value t is substituted in the polynomial F′, the embedded value is outputted. When they are not equal, information indicating falsification detection is outputted. | 11-11-2010 |
| 20110126291 | SECRET INFORMATION DISTRIBUTION SYSTEM, METHOD, PROGRAM, AND TRANSMISSION SYSTEM - A secret reconstruction method comprises: receiving (k+α) pairs out of n pairs (r | 05-26-2011 |
| 20120011419 | TRANSMISSION SYSTEM, METHOD AND PROGRAM - A transmitting apparatus generates and transmits 3t+1 or more number of codewords for a message and multiple faulty encoded message identifying data, wherein the information regarding the message may not be obtained from t or less number of encoded messages and the message can be decoded from 2t+1 or more codewords. The faulty encoded message identifying data are able to detect t or less number of faulty codewords of the message, even if there are t or less number of faulty codewords. A receiving apparatus checks whether there is no fault in each codeword for the message, using the codewords of the message and faulty encoded message identifying data for the codewords of the message received and the corresponding faulty encoded message identifying data and also checks whether the codewords decided to be non-faulty are all of the same message. The receiving apparatus, if the codewords decided to be non-faulty are all of the same message, decodes the message from the codewords decided to be non-faulty, and outputs the so decoded message and if otherwise, outputs a signal indicating failure in message reception. | 01-12-2012 |
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| 20080204107 | MOS RESISTANCE CONTROLLING DEVICE AND MOS ATTENUATOR - A MOS resistance controlling device includes: a plurality of MOS transistors having a first MOS transistor to N-th (the integer N is larger than 1) MOS transistor being serially connected, the source of the first MOS transistor being set to a first reference potential, the drain the N-th MOS transistor being set to a second reference potential, and the drain of an I-th MOS transistor being connected to the source of an I+1-th MOS transistor, where I is an integer from 1 to N−1; a current source which is electrically disposed at connection node between the drain of the N-th MOS transistors and the second reference potential; and an operational amplifier having a first input terminal being supplied with a third reference potential, a second input terminal connected with the connection node and an output terminal being connected with gates of the MOS transistors. | 08-28-2008 |
| 20090042521 | RADIO TRANSMITTER USING CARTESIAN LOOP - A radio transmitter including a combiner which combines input I/Q signals with feedback I/Q signals, a power amplifier which amplifies the quadrature modulated signal, a detector which detects amplitude and phase differences between the input and feedback I/Q signals, a switch to turn on and off the feedback I/Q signals, a generator to generate control signals which minimizes the amplitude difference and the phase difference, in a state where a transmission power is set, during for a period during which the switch is turned off, an amplitude adjuster which adjusts an amplitude of the feedback RF signal, during a period during which the switch is turned on, and a phase adjuster which adjusts a phase of the local signal, during the period during which the switch is turned on. | 02-12-2009 |
