Patent application number | Description | Published |
20080272999 | DISPLAY DEVICE, DISPLAY DRIVER AND IMAGE DISPLAY METHOD - In a display device and a display driver, when a grayscale of a display image is equal to or lower than a specific grayscale value obtained from a histogram of the display image, a display grayscale is extended with a linear function. On the other hand, when a grayscale of a display image is equal to or higher than the specific grayscale value, histogram equalization of a part higher than the specific grayscale value is performed, and the display grayscale is extended with a non-linear function obtained from the histogram equalization. | 11-06-2008 |
20090015532 | DISPLAY DEVICE AND DRIVING CIRCUIT THEREOF - In a display device such as a liquid crystal display, a processing for compressing a range of display data (grayscale) to a low grayscale side (a grayscale range where response is fast) except for a high grayscale side (a grayscale range where response is slow) at a predetermined compression ratio to conduct display according to response characteristic of transition between grayscales and a temperature state and a processing for increasing a light amount of a backlight to compensate for luminance change due to the compression are performed, for example, in a liquid crystal panel of TN liquid crystal. Thereby, response can be made fast even at a low temperature time. | 01-15-2009 |
20090115790 | DISPLAY CONTROL DEVICE AND MOBILE ELECTRONIC APPARATUS - A display control device and technique for controlling displays on a display unit, in which a plurality of display segments are two-dimensionally arranged (e.g. a dot matrix type display unit), is provided. The technique is effectively applicable to a write data latch circuit of a memory for storing display data in the display control device, such as, for example, a liquid crystal display control device, a mobile electronic apparatus, etc. A display drive control technique for controlling a moving picture display mode of a display device is also provided. The display drive control circuit controls a picture display mode of a display device for displaying still pictures and moving pictures to a liquid crystal display device, such as, for example, a dot matrix type display devices, an organic EL display device, etc. | 05-07-2009 |
20090122038 | SEMICONDUCTOR CIRCUIT - A semiconductor circuit with the reduced scale of circuitry and a semiconductor integrated circuit chip which is obtained by integrating the semiconductor circuit and enables chip size reduction are provided. For this purpose, a two-decode method is used. The method uses: a pre-decode circuit comprising a first decoder of the preceding stage which decodes an arbitrary bit of an address signal of eight bits and a second decoder of the preceding stage which decodes the remaining bits; level conversion circuits which shift the output of the pre-decode circuit; and post-decode circuits which decode the decode outputs of the decoders in the pre-decode circuit, level-converted through the level conversion circuits. | 05-14-2009 |
20100165011 | DISPLAY DRIVER AND DISPLAY DRIVING METHOD - In a display driver, one scanning period is divided into a period P and a subsequent period D. In the period P, a pre-charge voltage equal to an original data voltage is applied in a time-sharing manner to data lines in one block, and in the period D after the period P, the original data voltage is applied again. | 07-01-2010 |
20100277503 | DISPLAY DRIVE CONTROL CIRCUIT - No flicker is displayed on the display screen during display of moving pictures and power consumption can be reduced by adding a high quality moving picture display function. Moreover, the number of times of transfer of moving pictures by comprising a still-picture·text·system·I/O bus·interface and a moving picture interface (external display interface), providing a display operation change register (DM) and a RAM access change register (RM) which are changed selectively depending on display content (display mode) displayed on a display device and displaying the display data on the display device via a picture memory even in the moving picture display mode. | 11-04-2010 |
20120176392 | DISPLAY DRIVE CONTROL DEVICE AND ELECTRIC DEVICE INCLUDING DISPLAY DEVICE - In a system including a color liquid crystal panel, a liquid crystal display drive control device for driving the panel, and a microprocessor, the display drive control device reduces burden on a microprocessor and reduces system power consumption. In the liquid crystal display drive control device that incorporates a memory for storing image data displayed on a color liquid crystal panel, reads out the image data sequentially from the memory, generates image signals of three primary colors for each pixel of the panel, and outputs the image signals from external output terminals, the display drive control device includes a transparency arithmetic circuit that applies calculation processing to two image data read out from the built-in memory and generates data for a transparent display, supplies display data generated by the transparency arithmetic circuit to a driver, and makes the driver generate and output drive signals to the liquid crystal panel. | 07-12-2012 |
20130044146 | DISPLAY DEVICE, DISPLAY DRIVER AND IMAGE DISPLAY METHOD - In a display device and a display driver, when a grayscale of a display image is equal to or lower than a specific grayscale value obtained from a histogram of the display image, a display grayscale is extended with a linear function. On the other hand, when a grayscale of a display image is equal to or higher than the specific grayscale value, histogram equalization of a part higher than the specific grayscale value is performed, and the display grayscale is extended with a non-linear function obtained from the histogram equalization. | 02-21-2013 |
20130120480 | DISPLAY DRIVER - In a display driver, a first backlight control unit using a histogram and a second backlight control unit using an optical sensor can be used in combination. The display driver includes a PWM generating unit setting a control signal value consisting of a product of a luminance rate of X % and a luminance rate of Y % as a luminance rate of a control signal for controlling a backlight with respect to maximum backlight luminance when a luminance rate of a control signal obtained by first backlight control with respect to the maximum backlight luminance is X % and a luminance rate of a control signal obtained by second backlight control with respect to the maximum backlight luminance is Y %. | 05-16-2013 |
20140009480 | DISPLAY SYSTEM WITH DISPLAY PANEL AND DISPLAY CONTROLLER AND DRIVER HAVING MOVING PICTURE INTERFACE - No flicker is displayed on the display screen during display of moving pictures and power consumption can be reduced by adding a high quality moving picture display function. Moreover, the number of times of transfer of moving pictures by comprising a still-picture • text • system • I/O bus • interface and a moving picture interface (external display interface), providing a display operation change register (DM) and a RAM access change register (RM) which are changed selectively depending on display content (display mode) displayed on a display device and displaying the display data on the display device via a picture memory even in the moving picture display mode. | 01-09-2014 |
20140043348 | Display Control Device and Mobile Electronic Apparatus - A display control device and technique for controlling displays on a display unit, in which a plurality of display segments are two-dimensionally arranged (e.g. a dot matrix type display unit), is provided. The technique is effectively applicable to a write data latch circuit of a memory for storing display data in the display control device, such as, for example, a liquid crystal display control device, a mobile electronic apparatus, etc. A display drive control technique for controlling a moving picture display mode of a display device is also provided. The display drive control circuit controls a picture display mode of a display device for displaying still pictures and moving pictures to a liquid crystal display device, such as, for example, a dot matrix type display devices, an organic EL display device, etc. | 02-13-2014 |
20140247291 | DISPLAY DRIVER - In a display driver, a first backlight control unit using a histogram and a second backlight control unit using an optical sensor can be used in combination. The display driver includes a PWM generating unit setting a control signal value consisting of a product of a luminance rate of X % and a luminance rate of Y % as a luminance rate of a control signal for controlling a backlight with respect to maximum backlight luminance when a luminance rate of a control signal obtained by first backlight control with respect to the maximum backlight luminance is X % and a luminance rate of a control signal obtained by second backlight control with respect to the maximum backlight luminance is Y %. | 09-04-2014 |
Patent application number | Description | Published |
20100228956 | CONTROL CIRCUIT, INFORMATION PROCESSING DEVICE, AND METHOD OF CONTROLLING INFORMATION PROCESSING DEVICE - A control circuit for receiving data transmitted by a data transmitting circuit and transmitting the received data to a data receiving circuit includes: a data receiving unit for receiving the data transmitted by the data transmitting circuit; a packet analyzing unit for judging whether the data received from the data transmitting circuit is a packet including history acquisition information and reading the history acquisition information from the received data; a history acquisition executing unit for starting or stopping acquiring the history information of the transmission and reception of the data according to the history acquisition information read by the packet analyzing unit to store the history information acquired; and a data transmitting unit for transmitting the packet including the history acquisition information or a packet other than the packet including the history acquisition information to the data receiving circuit. | 09-09-2010 |
20110050291 | Method and apparatus for adjusting driver output current and electronic apparatus - According to an aspect of the embodiment, a driver outputs a driver current to a reception LSI, and a receiver included in the reception LSI receives an analog voltage signal corresponding to a value of the driver current as a receiver input. An A/D converter converts the voltage signal of the receiver input to a digital value, and transmits the digital value to a driver current controller in a transmission LSI. The driver current controller adjusts a number of PMOS driving stages in the driver or a number of NMOS driving stages in the driver, to make the digital value of the voltage signal of the receiver input belong to a predetermined range. | 03-03-2011 |
20110231743 | CONTROL CIRCUIT, INFORMATION PROCESSING APPARATUS, AND METHOD FOR CONTROLLING INFORMATION PROCESSING APPARATUS - A control circuit of a chip | 09-22-2011 |
20120239996 | MEMORY CONTROLLER, INFORMATION PROCESSING APPARATUS AND METHOD OF CONTROLLING MEMORY CONTROLLER - A memory controller which is connected to a memory module having an ECC (Error Check and Correction) function and which controls access to the memory module, the memory controller, has an error detection unit configured to detect an error bit and a position of the error bit by reading, from the memory module, information on codes of the ECCs corresponding to a plurality of read data read from the memory module, a buffer configured to temporarily store the plurality of read data, and a determination unit configured to determine, when the plurality of read data stored in the buffer include a number of data in which a correctable error is detected by the error detection unit and error detection positions of the detected data are the same as each other, that a correctable error is included in a group of the plurality of read data. | 09-20-2012 |
Patent application number | Description | Published |
20130139016 | SEMICONDUCTOR INTEGRATED CIRCUIT DEVICE, METHOD OF CONTROLLING THE SEMICONDUCTOR INTEGRATED CIRCUIT DEVICE AND INFORMATION PROCESSING SYSTEM - A debug system scans a scan memory element group having a plurality of scan memory elements which are connected in series in a semiconductor integrated circuit device and collects data in the scan memory element group. The semiconductor integrated circuit device has an end code register which is provided between an input terminal and an input side of the scan memory element group and holds an end code, a start code register which is provided between an output terminal and an output side of the scan memory element group and holds a start code, and a scan control circuit which controls shift operations of the scan memory element group, the end code register and the start code register, and outputs scan data to the output terminal. | 05-30-2013 |
20130159795 | INTEGRATED CIRCUIT, FAULT INFORMATION PROCESSING METHOD AND FAULT INFORMATION COLLECTION APPARATUS - An integrated circuit includes a fault collection section, and a plurality of modules. Each of the modules includes a fault detection section that detects a fault in the modules, a fault information generation section that generates fault information about the detected fault, a notification section that issues a fault detection notification indicating that a fault is detected to the fault collection section, and a first transmission section that transmits the fault information to the fault collection section. The fault collection section includes a specification section that specifies, based on the fault detection notification, the module from which the fault detection notification has been received first from among the modules, and an acquisition section that acquires the fault information from the module specified by the specification section. | 06-20-2013 |
20130179602 | PROCESSING SYSTEM, COMMUNICATION APPARATUS, AND PROCESSING APPARATUS - In a processing system including a processing apparatus, an input/output apparatus and communication apparatuses, the communication apparatus includes: a first instructing unit that issues a configuration change instruction in accordance with set configuration information to the processing apparatus and the input/output apparatus; and a first setting unit that, when an operation change completion notification corresponding to the configuration change instruction is received, sets the configuration information in accordance with a state established after a configuration change, and each of the processing apparatus and the input/output apparatus includes: a second setting unit that sets the configuration information in accordance with the configuration change instruction received from the communication apparatus; a second instructing unit that issues an operation change instruction in accordance with the set configuration information; and a notifying unit that, when the operation change is completed, issues an operation change completion notification to the communication apparatus. | 07-11-2013 |
20130232372 | INTEGRATED CIRCUIT, VOLTAGE VALUE ACQUISITION METHOD, AND TRANSMISSION AND RECEPTION SYSTEM - An integrated circuit includes a data signal reception unit that receives a data signal transmitted from a transmission circuit, a timing signal reception unit that receives a timing signal transmitted from the transmission circuit and indicating a reading timing of the data signal, a timing adjustment unit that adjusts an output timing of the timing signal received by the timing signal reception unit, a reading unit that reads the data signal received by the data signal reception unit according to an adjusted timing signal of which the output timing is adjusted by the timing adjustment unit, and a voltage value acquisition unit that acquires a voltage value of the data signal received by the data signal reception unit and a voltage value of the adjusted timing signal of which the output timing is adjusted by the timing adjustment unit. | 09-05-2013 |
20130275484 | DIVISION CIRCUIT AND MEMORY CONTROLLER - A separation circuit separates a 32-bit dividend, (e.g., 1695) into 4-bit segments and outputs 9 separated dividends. The position of each dividend counted from the dividend having the lowest bit is i. A first output circuit concatenates at the end of a dividend, 0s of number equal to an integer multiple of 4 bits. Each calculation circuit outputs an 8-bit quotient, a numerical value created by the first output circuit divided by 3(=2 | 10-17-2013 |
20130297895 | MEMORY CONTROLLER AND INFORMATION PROCESSING APPARATUS - A memory controller includes: a determination part configured to determine a type of a DIMM having a different address line topology based on SPD; a slew rate setting part configured to set a slew rate of an address signal based on the type of the DIMM determined by the determination part; and a delay setting part configured to set a data delay amount when reading/writing data. | 11-07-2013 |
20140040680 | MEMORY CONTROL DEVICE AND CONTROL METHOD - A memory controller receives a read request and also issues a patrol request at a predetermined time interval so as to determine whether any error occurs in data stored in a DIMM. Furthermore, the memory controller generates a patrol address that is the subject of the subsequently issued patrol request. When the memory controller receives a read request, the memory controller compares the patrol address with the read address that is the subject of the received read request. When the read address matches the patrol address, the memory controller cancels the issuance of the subsequent patrol request. | 02-06-2014 |
Patent application number | Description | Published |
20090066817 | IMAGE CAPTURE APPARATUS, IMAGE CAPTURE METHOD, AND STORAGE MEDIUM - An image capture apparatus comprises an image capture unit, a storage unit configured to store a pattern and an associated synthesizing-object image corresponding to a shape of the pattern, a display unit configured to display a capture image captured by the image capture unit and to superpose the pattern on the capture image, a first detector configured to detect a first control signal when the display unit displays the capture image, a reading unit configured to read from the storage unit the synthesizing-object image when the first detector detects the first signal, and a first display controller configured to control the display unit to superpose the synthesizing-object image on an area where the pattern is superposed. | 03-12-2009 |
20120026116 | IMAGE PROCESSING APPARATUS, IMAGE PROCESSING SYSTEM, IMAGE PROCESSING METHOD AND STORAGE MEDIUM - An image processing apparatus includes a display device configured to display an image, a touch area detector configured to detect a touched area of the image displayed by the display unit, and a processor configured to change a tone of the touched area of the image. | 02-02-2012 |
20120026184 | IMAGE PROCESSING APPARATUS, IMAGE PROCESSING SYSTEM, AND IMAGE PROCESSING METHOD - An image processing apparatus includes a first display controller configured to display a first image, a touch area detector configured to detect a touched area of the displayed first image, a first processor configured to change a tone of the touched area of the first image, a storage configured to store touched areas detected by the touch area detector, a second display controller configured to display a second image instead of the first image, and a second processor configured to change tones of the touched areas of the second image which are stored in the storage. | 02-02-2012 |
20130108156 | IMAGE PROCESSING APPARATUS, IMAGE PROCESSING METHOD, AND PROGRAM STORAGE MEDIUM | 05-02-2013 |
20140071152 | IMAGE PROCESSING APPARATUS, IMAGE PROCESSING SYSTEM, AND IMAGE PROCESSING METHOD - An image processing apparatus includes a first display controller configured to display a first image, a touch area detector configured to detect a touched area of the displayed first image, a first processor configured to change a tone of the touched area of the first image, a storage configured to store touched areas detected by the touch area detector, a second display controller configured to display a second image instead of the first image, and a second processor configured to change tones of the touched areas of the second image which are stored in the storage. | 03-13-2014 |
Patent application number | Description | Published |
20090043453 | Electric power steering system - An electric power steering system in which a current command for a brushless DC motor is determined based on a detected steering torque, a voltage to be applied is determined based on a difference between the current command value and a current value flowing to the motor, and steering assist is implemented by applying the voltage so determined to the motor. A rotational angular velocity is computed based on a detected rotor position, and it is determined that the motor is abnormal when a rotational angular velocity determination unit determines that the rotational angular velocity is equal to or less than a predetermined value, a current command value determination unit determines that the current command value is equal to or less than a predetermined value, and a voltage determination unit determines that the voltage applied to the motor falls out of a predetermined voltage range. | 02-12-2009 |
20090069980 | Electric Power Steering System - The electric power steering system detects a steering torque Ts applied to a steering member (not shown), determines a q-axis current i*q and a d-axis current i*d of a motor in dq coordinates, on the basis of the detected steering torque Ts, determines a q-axis voltage V*q and a d-axis voltage V*d, on the basis of a power supply voltage Ed, such that the determined q-axis current i*q and d-axis current i*d flow through the motor, converts the q-axis voltage V*q and the d-axis voltage V*d into three-phase voltages V*u, V*v, and V*w, and applies the three-phase voltages V*u, V*v, and V*w to drive the motor, thereby assisting steering. The electric power steering system includes a limiter unit which limits the q-axis voltage V*q to be smaller than √{square root over ((3n | 03-12-2009 |
20090114471 | Electric power steering system - An electric power steering system which includes a torque detector for detecting a steering torque applied to a steering member and a steering assist brushless DC motor, whereby a plurality of phase currents are caused to flow to the brushless DC motor based on the steering torque detected by the torque detector so as to give steering assistance. A current detector for detecting each of the plurality of phase currents, an adder for adding up respective values of the currents detected by the current detectors and a determination device for determining whether or not a result of an addition by the adder falls outside a predetermined range are provided, whereby it is designed to determined as abnormal when the determination device determines that the result of the addition falls outside the predetermined range. | 05-07-2009 |
Patent application number | Description | Published |
20120097471 | HYDRAULIC POWER STEERING APPARATUS - A hydraulic power steering apparatus assists in steering of a vehicle with a hydraulic cylinder. The hydraulic power steering apparatus includes a flow control valve, a steering torque sensor, a steering angle sensor, a vehicle speed sensor, and an ECU. The flow control valve changes the supply/drainage amount of hydraulic fluid for the hydraulic cylinder. The ECU sets a supply/drainage mode for supplying/draining the hydraulic fluid with respect to the hydraulic cylinder based on detection results from the aforementioned sensors and controls the flow control valve in accordance with the supply/drainage mode of the hydraulic fluid. | 04-26-2012 |
20120097472 | HYDRAULIC POWER STEERING SYSTEM - A hydraulic power steering system includes: a hydraulic cylinder in which an interior is partitioned into first and second hydraulic chambers by a piston on a steered shaft; a variable displacement electric pump that supplies hydraulic fluid to the hydraulic cylinder; a selector valve selectively set in a mode in which the hydraulic fluid is supplied to the first hydraulic chamber and drained from the second hydraulic chamber or in a mode in which the hydraulic fluid is supplied to the second hydraulic chamber and drained from the first hydraulic chamber; a detector that detects torque, steering angle, and/or vehicle speed; and a controller. | 04-26-2012 |
20120247864 | SOLENOID VALVE DEVICE, HYDRAULIC APPARATUS EQUIPPED WITH THE SOLENOID VALVE DEVICE, AND HYDRAULIC POWER STEERING SYSTEM EQUIPPED WITH THE HYDRAULIC APPARATUS - A solenoid valve device includes: a solenoid valve that includes a solenoid that is supplied with driving current to generate magnetic flux, and a valve element that is moved by the magnetic flux generated from the solenoid; and a control device that controls the solenoid valve. The control device includes an alternating current component in the driving current and supplies the driving current including the alternating current component to the solenoid, and detects an impedance of the solenoid. | 10-04-2012 |
20130037341 | HYDRAULIC POWER STEERING SYSTEM - A pump rotation speed correcting unit includes a valve opening degree command differential value computing unit, a pump rotation speed correction value computing unit, and a correction value adding unit. The valve opening degree command differential value computing unit computes a temporal differential value of a valve opening degree command value that is set by a valve opening degree command value setting unit. The pump rotation speed correction value computing unit computes a correction value of a pump rotation speed command value on the basis of the valve opening degree command differential value. The correction value adding unit adds the pump rotation speed correction value to the pump rotation speed command value that is set by the pump rotation speed command value setting unit. | 02-14-2013 |
20130112492 | HYDRAULIC POWER STEERING SYSTEM - A hydraulic power steering system includes a rotation angle sensor that detects a rotation angle of a shaft. A rotary valve includes a valve element that rotates together with the shaft of an electric motor and a housing that has an internal space connected to oil passages. A control unit reflects an output from the rotation angle sensor on control of the electric motor. | 05-09-2013 |
20130118826 | POWER STEERING SYSTEM - A power steering system includes: a hydraulic cylinder that generates a steering assist force; a hydraulic control valve that has a spool that adjusts the state of supply and drainage of the hydraulic fluid to and from the hydraulic cylinder based on a position of the spool; a driving unit that displaces the spool by driving the spool with a predetermined driving force; and a determination unit that determines that there is an abnormality in the hydraulic control valve when the driving force for displacing the spool falls outside a predetermined range. | 05-16-2013 |
20130138297 | HYDRAULIC POWER STEERING SYSTEM - A damping control unit sets a damping torque command value that corresponds to a steering angular velocity when a direction of a detected steering torque is a turning direction, a magnitude of the detected steering torque is larger than or equal to a first threshold, a direction of the steering angular velocity is a returning direction and a magnitude of the steering angular velocity is higher than or equal to a second threshold. An addition unit adds the damping torque command value generated by the damping control unit to a basic assist torque command value set by a basic assist torque command value setting unit. | 05-30-2013 |
20130161113 | HYDRAULIC POWER STEERING SYSTEM - When an ECU is powered on, an overall control unit determines whether a temperature detected by a temperature sensor is lower than or equal to a predetermined temperature. When it is determined that the detected temperature is lower than or equal to the predetermined temperature, the overall control unit provides a second operation start command for operating a valve driving motor control unit in a rotation direction alternately switching mode, to the valve driving motor control unit. When the valve driving motor control unit receives the second operation start command from the overall control unit, the valve driving motor control unit starts operating in the rotation direction alternately switching mode. | 06-27-2013 |
20140114535 | PID CONTROL SYSTEM - In a PID control system, a proportionality coefficient multiplication unit multiplies a valve opening degree command value by a proportionality coefficient. A first angle deviation computation unit computes a deviation between an output value from a proportionality coefficient multiplication unit and a detected rotation angle of a valve driving motor. A differential coefficient multiplication unit multiplies the valve opening degree command value by a differential coefficient. A third angle deviation computation unit computes a deviation between an output value from the differential coefficient multiplication unit and the detected rotation angle of the valve driving motor. | 04-24-2014 |
20140151145 | TWO-PHASE MOTOR AND HYDRAULIC POWER STEERING SYSTEM USING THE TWO-PHASE MOTOR - A two-phase motor with high space utilization efficiency is provided for driving a hydraulic control valve. A valve drive motor includes a rotor and a stator surrounding the rotor. The rotor has six magnetic poles. The stator includes six stator windings. The U-phase first stator winding and the V-phase first stator winding constitute a pair of two-phase stator windings. The U-phase second stator winding and the V-phase second stator winding constitute a pair of two-phase stator windings. The U-phase third stator winding and the V-phase third stator winding constitute a pair of two-phase stator windings. The two stator windings of each pair are disposed at an angular interval of 180 degrees in terms of an electrical angle. | 06-05-2014 |
Patent application number | Description | Published |
20090153000 | MOTOR, THERMISTOR, AND MANUFACTURING METHOD OF THE SAME - A thermistor device configures part of an electrical path from a motor feeder section to an armature. A recess defining wall defines an accommodating recess, which accommodates the thermistor device. The thermistor device includes a plate-like thermistor element. A first conductive plate and a second conductive plate sandwich the thermistor element. A pair of first projections | 06-18-2009 |
20090267786 | OPENING AND CLOSING APPARATUS - An opening and closing apparatus having an opening and closing body, a drive portion, a control portion, and a detecting device is disclosed. The detecting device has a sensor portion for detecting the capacitance between the sensor portion and an object that is in the proximity of the sensor portion or is contacting the sensor portion. The detecting device detects that the object is in the proximity of the sensor portion or is contacting the sensor portion based on the capacitance detected by the sensor portion. If the detecting device detects contact of the object with the sensor portion when the opening and closing body is not being moved, the control portion controls the drive portion to start opening the opening and closing body. If the detecting device detects that the object is in the proximity of the sensor portion when the opening and closing body is being closed, the control portion controls the drive portion to stop or reverse the movement of the opening and closing body. | 10-29-2009 |
20090295410 | OPENING AND CLOSING APPARATUS AND METHOD FOR MANUFACTURING SENSOR SUPPORTING MEMBER - An opening and closing apparatus is disclosed. The opening and closing apparatus includes an opening and closing body, a capacitance sensor, and a sensor support member. The capacitance sensor has a conductive sensor electrode, and outputs a detection signal that corresponds to the capacitance between the sensor electrode and a conductive object located close to the sensor electrode. The sensor support member includes a guard electrode, a holding portion, an attaching portion, and a conductive reinforcing member. The reinforcing member is embedded in the main body. At least a part of the reinforcing member is embedded in the guard electrode such that the reinforcing member is integrated with the guard electrode. | 12-03-2009 |
20110047879 | OPENING AND CLOSING APPARATUS - An opening and closing apparatus is disclosed that includes an opening and closing body, a force transmitting portion, an elongated sensor body, a support member, and a control section. The opening and closing body is actuated to selectively open and close an opening. The force transmitting portion has a drive portion that generates drive force. The force transmitting portion transmits the drive force from the drive portion to the opening and closing body. The sensor body detects an object between a closing-side end of the opening and closing body and a facing part of the periphery of the opening that faces the closing-side end of the opening. The closing-side end is at an advancing side of the opening and closing body when the opening and closing body is in a closing operation. The support member is fixed either to the closing-side end or the facing part. The support member supports the sensor body. The control section controls the drive portion based on a detection result of the object received from the sensor body. The support member includes an attachment main body and a reinforcing member that is embedded in the attachment main body and reinforces the attachment main body. The reinforcing member has a sensor holding portion that is exposed to the outside from the attachment main body and holds the sensor body. | 03-03-2011 |
Patent application number | Description | Published |
20090066982 | IMAGE FORMING APPARATUS - The image forming apparatus includes image forming parts, a developing device and a cleaner to clean at least the intermediate transfer material or the transfer device, wherein at the image forming operation starting time, in each image forming part, after starting the charging, the application of the developing bias is started before the top end of the charging portion of the image bearing member surface reaches a developing area in which the image bearing member and the developer bearing member are set against each other, and from among the areas on the image bearing member in which the charging is not yet performed in each image forming part, in case each area having passed the developing area when the developing bias is applied is brought into contact with the intermediate transfer member, the contact area with each area in the intermediate transfer member is controlled without superposing on the intermediate transfer member. | 03-12-2009 |
20090285607 | DEVELOPING APPARATUS - A developing apparatus including a first development sleeve carrying a developer toward a first development area, a second development sleeve carrying the developer from the first sleeve toward a second development area, a first magnet roller disposed in the first sleeve and having a first magnetic pole, a second magnet roller disposed in the second sleeve and having a second magnetic pole, a first magnet member disposed in the vicinity of an axial end of the first sleeve without facing the first magnetic pole, and a second magnet member disposed in the vicinity of an axial end of the second sleeve without facing the second magnetic pole. A surface facing the second sleeve in an end area downstream of the second magnet member in a rotating direction of the second developer carrying member is identical in polarity with the second magnetic pole. | 11-19-2009 |
20100061773 | DEVELOPING APPARATUS - A developing apparatus in which a first magnet of a first developing sleeve includes a first magnetic pole near a potion opposing to an image bearing member, and a second magnetic pole being downstream of the first magnetic pole; and a second magnet of a second developing sleeve includes a third magnetic pole near a portion opposing to the first sleeve. Assuming that a magnetic force obtained by combining normal direction forces Fr | 03-11-2010 |
20110052233 | DEVELOPMENT APPARATUS - In a development apparatus including conveying screws which circulates and conveys developer in a developer container as being rotated, a developing sleeve which bears and conveys developer in the developer container as being rotated, and a restriction blade which restricts developer quantity at the developing sleeve, the developer container includes a supply chamber to supply developer to the developing sleeve and a retrieval chamber to retrieve developer from the developing sleeve, and rotation speed of the conveying screws or rotation speed of the developing sleeve is changed so that Vsc/Vsl during image forming is not performed is to be smaller than that during image forming is performed, as Vsc denotes the rotation speed of the conveying screws and Vsl denotes the rotation speed of the developing sleeve. | 03-03-2011 |
20110170916 | DEVELOPING APPARATUS - A repulsive magnetic field is formed in a section immediately upstream of a regulating blade, so that generation of a developing-agent stationary layer is suppressed or eliminated. Accordingly, a developing apparatus capable of stably maintaining the layer thickness of developing agent conveyed to a developing area for a long time is provided. | 07-14-2011 |
20120201577 | DEVELOPING APPARATUS - A developing apparatus includes a developer carrying member; and a magnetic member provided inside the carrying member and having magnetic poles arranged circumferentially, wherein on a center axis of the carrying member outside an end of the magnetic member, there is a region in which a magnetic flux density of a first magnetic polarity converges toward zero; and wherein a ratio of a volume, per unit length, of a portion of the magnetic member which has a surface magnetic pole of a second magnetic polarity which is different from the first magnetic polarity in a longitudinal end portion to that in a longitudinally central portion is smaller than a ratio of a volume of a portion of the magnetic member which has a surface magnetic pole of the first magnetic polarity in a longitudinal end portion to that in a longitudinally central portion. | 08-09-2012 |
20120321352 | DEVELOPING APPARATUS - A developing apparatus is provided in which, with reference to a middle position in a developer conveyance direction, an average friction coefficient between an inner wall of the developing chamber and the developer, is smaller at an upstream side than at a downstream side in the developer conveyance direction. | 12-20-2012 |
20130136506 | DEVELOPING DEVICE - A developing device includes first and second developer carrying members for developing an electrostatic latent image formed on an image bearing member. The first developer carrying member has a surface provided with grooves and feeds a developer carried thereon to a first developing region which is an opposing portion where the first developer carrying member opposes the image bearing member. The second developer carrying member carries the developer delivered from the first developer carrying member and feeds the developer to a second developing region which is an opposing portion where the second developer carrying member opposes the image bearing member. The second developer carrying member has a surface provided with grooves different in angle from those of the surface of the first developer carrying member. | 05-30-2013 |
20130243489 | DEVELOPING APPARATUS - A developing apparatus, including: a developing sleeve; a magnet configured to cause the sleeve to carry the developer and including a first magnetic pole and a second magnetic pole; a supply chamber configured to supply the developer to the sleeve; a collection chamber configured to collect the developer used for development; a first conveyance member and a second conveyance member provided in the supply chamber and the collection chamber, respectively; and a third conveyance member configured to convey the developer collected in the collection chamber in a direction opposite to a developer conveying direction in the collection chamber, wherein a center of the third conveyance member is arranged below a zone and overlaps the zone, which is defined on a surface of the sleeve between a local maximal peak of a magnetic flux density of the first magnetic pole and a local minimal peak of the magnetic flux density. | 09-19-2013 |
20150037073 | DEVELOPING APPARATUS - A developing apparatus includes a developer carrying sleeve for carrying a developer to a position opposing an image bearing drum, wherein said sleeve is provided with a plurality of groove portions extending in an axial direction of said sleeve; and a developing bias voltage applying device for applying a developing bias voltage to said sleeve, wherein said bias voltage applying device is capable of outputting, as the bias voltage, a voltage of a waveform having a cyclic period including an AC bias portion comprising an AC component and a DC component superimposed thereto, and a blank portion following the AC bias portion and consisting of a DC component, wherein a width L (m) of the groove, a peripheral speed Vs (m/s) of said sleeve, and a duration t1 (s) of the blank portion in one cyclic period of the bias voltage satisfy L/Vs02-05-2015 | |
20150104220 | DEVELOPING APPARATUS - A developing apparatus includes a sleeve for carrying a developer including toner and magnetic carrier, the sleeve having a plurality of grooves extending in a longitudinal direction; a magnet provided inside the sleeve, a non-magnetic regulating member, provided spaced from the sleeve, wherein an amount M/S (mg/mm | 04-16-2015 |
20150139699 | DEVELOPING APPARATUS - A developing apparatus includes a developer carrying member; and a magnetic member provided inside the carrying member and having magnetic poles arranged circumferentially, wherein on a center axis of the carrying member outside an end of the magnetic member, there is a region in which a magnetic flux density of a first magnetic polarity converges toward zero; and wherein a ratio of a volume, per unit length, of a portion of the magnetic member which has a surface magnetic pole of a second magnetic polarity which is different from the first magnetic polarity in a longitudinal end portion to that in a longitudinally central portion is smaller than a ratio of a volume of a portion of the magnetic member which has a surface magnetic pole of the first magnetic polarity in a longitudinal end portion to that in a longitudinally central portion. | 05-21-2015 |
20150153678 | DEVELOPING APPARATUS - A developing apparatus, including: a developing sleeve; a regulating member configured to regulate a developer; a first chamber; a second chamber communicating with the first chamber to form a circulation route of the developer; and a magnet fixed in the developing sleeve and including a first magnetic pole, a second magnetic pole having the same polarity as the first magnetic pole and being arranged adjacently to and downstream of the first magnetic pole, and a third magnetic pole having a different polarity from the second magnetic pole and being arranged adjacently to and downstream of the second magnetic pole, the second magnetic pole being arranged upstream of an intersection at which a vertical line passing through a rotation center of a first conveying member in the first chamber arranged below the rotation center of the developing sleeve intersects with a lower surface of the developing sleeve. | 06-04-2015 |
20150268586 | DEVELOPING DEVICE AND IMAGE FORMING APPARATUS - A developing device, comprising:
| 09-24-2015 |
20150293473 | IMAGE FORMING APPARATUS - An image forming apparatus comprising: a replenishment toner container which houses toner; and a development device which forms an image by using the toner supplied from the replenishment toner container, wherein at least two types of external additives are added to the toner, wherein, of the two types of external additives, when an added amount of a first external additive is Wh (volume % with respect to the toner) and an added amount of a second external additive is Wl (volume % with respect to the toner), a value of Wh+Wl in initial toner of a developer housed in the development device in advance is larger than a value of Wh+Wl in replenishment toner of a developer housed in the replenishment toner container; and wherein the fluidity of the replenishment toner is higher than the fluidity of the initial toner. | 10-15-2015 |
20160041505 | DEVELOPING APPARATUS - A developing apparatus includes a developer carrying member configured to carry a developer, and a magnet member disposed inside the developer carrying member. The magnet member includes one or more first magnet portions having a first magnetic polarity at an outer surface thereof opposing an inner surface of the developer carrying member, and one or more second magnet portions having a second magnetic polarity at an outer surface thereof opposing the inner surface. In a cross-section perpendicular to a longitudinal direction of the magnet member at a longitudinally central portion thereof, a number of the first magnet portions is larger than a number of the second magnet portions, and a ratio of a total area of the first magnet portions in the cross-section is smaller at a longitudinally end portion of the magnet member than at the longitudinally central portion. | 02-11-2016 |
20160062275 | DEVELOPING APPARATUS - A developing apparatus includes a rotatable developer carrying that carries developer on its surface. A first screw conveys the developer in a developing chamber, a second screw conveys the developer in a collection chamber in a direction opposite to the first screw, and a third screw conveys the developer in the collection chamber in a direction opposite to the second screw. A rotation center of the third screw is disposed opposite to a rotation center of the second screw and in a projection area on which an area of the surface of the developer carrying member downstream of a first position in the rotation direction of the developer carrying member and upstream of a second position in the rotation direction of the developer carrying member is projected downward in a gravity direction in a cross section orthogonal to a rotation axis of the third screw. | 03-03-2016 |
20160085181 | DEVELOPING DEVICE - A developing device includes a developing container, a feeding member including a blade, and a discharge opening for permitting discharge of an excessive developer, with supply of the developer, from the developing container. The blade is rotatable such that the blade moves downwardly at a side opposing to the discharge opening. A winding direction of the blade is such as to ascend toward the downstream with respect to the developer feeding direction, at the opposing side. A bottom end of the downstream edge of the discharge opening in a first cross-section taken perpendicularly to the rotation shaft is at a higher level than in a second cross-section at an upstream of the first cross-section with respect to the developer feeding direction. | 03-24-2016 |
Patent application number | Description | Published |
20080232736 | Optical Functional Circuit - The present invention provides an optical functional circuit where a holographic wave propagation medium is applied and a circuit property is excellent such as small transmission loss and crosstalk. The optical functional circuit where a plurality of circuit elements are formed on a substrate includes the wave propagation medium for converting an optical path of a leakage light so that the leakage light that is not emitted from a predetermined output port of the circuit element is not coupled to a different circuit element. This wave propagation medium is constituted by an optical waveguide that is provided with a clad layer formed on the substrate and a core embedded in the clad layer, and a part of the optical waveguide is formed in accordance with a refractive index distribution which is multiple scattered. | 09-25-2008 |
20100274541 | Planer Lightwave Circuit, Design Method for Wave Propagation Circuit, and Computer Program - A planar lightwave circuit is provided which can be easily fabricated by an existing planar-lightwave-circuit fabrication process, which can lower the propagation loss of signal light and which can convert inputted signal light so as to derive desired signal light. A planar lightwave circuit having a core and a clad which are formed on a substrate, has input optical waveguide(s) ( | 10-28-2010 |
20120170891 | OPTICAL WAVELENGTH MULTI/DEMULTIPLEXER - An optical wavelength multi/demultiplexer having transmission characteristics with a higher rectangular degree than a conventional one includes an AWG and two-stage lattice circuit. An example of a two-stage lattice circuit according to the present invention includes an input waveguide, a third optical coupler, a third and fourth arm waveguides, a second optical coupler, a first and second arm waveguides, a first optical coupler, and output waveguides. The optical path length differences between the third and fourth arm waveguides and between the first and second arm waveguides are designed to be ΔL. The path passing the third and first arm waveguides differs by 2·ΔL in optical length from that the fourth and second arm waveguides. The paths passing the third and second arm waveguides and passing the fourth and first arm waveguides differ by ΔL from that passing the fourth and second arm waveguides. | 07-05-2012 |
20120304143 | Planar Lightwave Circuit, Design Method for Wave Propagation Circuit, and Computer Program - A planar lightwave circuit is provided which can be easily fabricated by an existing planar-lightwave-circuit fabrication process, which can lower the propagation loss of signal light and which can convert inputted signal light so as to derive desired signal light. A planar lightwave circuit having a core and a clad which are formed on a substrate, has input optical waveguide(s) ( | 11-29-2012 |
20120311516 | Planar Lightwave Circuit, Design Method for Wave Propagation Circuit, and Computer Program - A planar lightwave circuit is provided which can be easily fabricated by an existing planar-lightwave-circuit fabrication process, which can lower the propagation loss of signal light and which can convert inputted signal light so as to derive desired signal light. A planar lightwave circuit having a core and a clad which are formed on a substrate, has input optical waveguide(s) ( | 12-06-2012 |
Patent application number | Description | Published |
20100104237 | WAVEGUIDE-TYPE OPTICAL INTERFEROMETER - In an optical interferometer, polarization dependence attributable to the optical path difference has conventionally been eliminated by inserting a half-wave plate at the center of the interferometer. However, light induced by polarization coupling produced in directional couplers used in the optical interferometer causes interference having different interference conditions from those of the normal light. Polarization rotators that effect any one of 90° rotation and −90° rotation of all states of polarization of incoming light are inserted in the optical interferometer, and thereby the interference conditions of light induced by polarization coupling are made the same as those of the normal light. Each of the polarization rotators is implemented by using two half-wave plates and by varying an angle of combination of these half-wave plates. Alternatively, each of the polarization rotators is implemented through a combination of one half-wave plate and a waveguide having birefringence properties. | 04-29-2010 |
20100119189 | OPTICAL DELAY LINE INTERFEROMETER - A demodulator is provided for a multilevel differential phase shift keyed signal, capable of eliminating polarization dependence due to birefringence and polarization coupling-induced light resulting from a waveguide structure, and also, polarization dependence due to dynamic birefringence produced at the time of driving a variable phase adjuster. The demodulator is configured of an optical delay line interferometer of a waveguide interference type. The S/N ratio of a demodulated signal in the demodulator formed by the optical delay line interferometer can be also improved. Further, both the polarization dependence and the temperature dependence of the optical delay line interferometer can be reduced. The disposition of a polarization converter and groves filled with a temperature compensation material makes it possible to provide a circuit configuration suitable for eliminating the polarization dependence and the temperature dependence of the optical delay line interferometer. | 05-13-2010 |
20110229070 | OPTICAL MODULATOR - An optical modulator having a high stability is provided. In the optical modulator according to the present invention, a phase modulation by an electro-optic effect is made on an optical substrate of an electro-optic material while the setting of an operating point by a thermal-optic effect is made on a planar lightwave circuit (PLC) substrate of quartz, silicon, or the like. Such configuration can suppress the influence of thermal drift or the like because no heat is applied directly to the optical substrate of the electro-optic material. In addition, breakage and warpage of the substrate due to heat are also mitigated. Further, quartz used for the PLC has a low thermal conductivity, approximately one-fifth of that of the LN substrate (approximately 1 W/(m·K)), and therefore, a desired phase difference can be maintained with a low power consumption, and thus, the operating point becomes stabilized. | 09-22-2011 |
20110268447 | Optical Wavelength Multiplexing/Demultiplexing Circuit, Optical Module Using Optical Wavelength Multiplexing/Demultiplexing Circuit, and Communication System - When a conventional synchronized AWG is employed to extend a transmission passband, an increase in loss near the optical center frequency can not be avoided. Because of passband width limit, a problem has existed in that the synchronized AWG could not be applied for a large, complicated communication system wherein a signal light passes a number of points. Therefore, an optical wavelength multiplexing/demultiplexing circuit of the present invention is a synchronized AWG, which includes an optical splitter arranged in an interference circuit that is connected on the side of one slab waveguide. The splitting ratio of the optical splitter varies, depending on the optical frequency, and the value becomes minimum near the optical center frequency of the synchronized AWG. The optical splitter is operated so that the splitting ratio is comparatively great at optical frequencies distant from the optical center frequency. | 11-03-2011 |
20120082414 | OPTICAL 90-DEGREE HYBRID CIRCUIT - An optical 90-degree hybrid circuit includes: first and second optical splitters for receiving and splitting a first and second light beam into two, respectively; a first optical coupler for generating an interfering light beam by multiplexing one of the light beams split by the first optical splitter and the second optical splitter; and a second optical coupler for generating an interfering light beam by multiplexing another one of the light beams split by the first optical splitter and the second optical splitter. The first optical splitter includes an optical coupler configured to output two light beams having equal phases, and the second optical splitter includes an optical coupler configured to output two light beams having a phase difference of 90 degrees. | 04-05-2012 |
20120093457 | OPTICAL 90-DEGREE HYBRID CIRCUIT - An optical 90-degree hybrid circuit includes a first demultiplexing optical coupler having two or more first input ports and two or more first output ports, a second demultiplexing optical coupler having two or more second input ports and two or more second output ports, two first arm waveguides connected to the first output ports, two second arm waveguides connected to the second output ports, a 90-degree phase shift section installed in one of the four arm waveguides, a first optical coupler and a second optical coupler connected to the first arm waveguides and the second arm waveguides, a first optical waveguide for connecting an optical splitter and the first input ports, and a second optical waveguide for connecting the optical splitter and the second input ports, wherein an optical length of the first optical waveguide is different from that of the second optical waveguide. | 04-19-2012 |
20120141067 | OPTICAL 90-DEGREE HYBRID CIRCUIT - The present invention provides an optical 90-degree hybrid circuit for reducing wavelength dependency of an IQ phase difference. An optical 90-degree hybrid circuit according to the present invention comprises a first demultiplexing optical coupler including a first and second input port, a second demultiplexing optical coupler including a third and fourth input port, first and second arm waveguides connected to the first and second input port, each having the same length, a third and fourth arm waveguides connected to the third and fourth input port, each having the same length, a 90-degree phase shift section installed in one of the first to fourth arm waveguides, a first optical coupler connected to the first and third arm waveguide, and a second optical coupler connected to the second and fourth arm waveguide, the light is inputted into the first and fourth input port or into the second and third input port. | 06-07-2012 |