Driving Circuitry Patents (Class 347/237)
  • Patent number: 11932014
    Abstract: A print component includes an array of fluidic actuation structures including a first column of fluidic actuating structures addressable by a set of actuation addresses, each fluidic actuating structure having a different one of the actuation addresses and having a fluidic architecture type, and a second column of fluidic actuating structures addressable by the set of actuation addresses. Each fluidic actuating structure of the second column has a different one of the actuation addresses and has a same fluidic architecture type as the fluidic actuating structure of the first column having the same address. An address bus communicates the set of addresses to the array of fluidic actuating structures, and a fire signal line communicates a plurality of fire pulse signal types to the array of fluidic actuating structures, the fire pulse signal type depending on the actuation address on the address bus.
    Type: Grant
    Filed: April 25, 2023
    Date of Patent: March 19, 2024
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Scott A. Linn, James Michael Gardner, John Rossi
  • Patent number: 11914939
    Abstract: A method includes receiving a circuit design. The circuit design includes blocks, a clock port, and two or more clock sinks across the blocks. The method further includes determining, by one or more processors, a common clock path between the clock port and the two or more clock sinks across the blocks. Further, the method includes determining a clock latency based on the common clock path.
    Type: Grant
    Filed: August 5, 2021
    Date of Patent: February 27, 2024
    Assignee: Synopsys, Inc.
    Inventors: Prashant Gupta, Shibaji Banerjee, Sivakumar Arulanantham
  • Patent number: 11764342
    Abstract: A light emitting device includes: a mounting board; a plurality of light emitting elements disposed on the mounting board; a plurality of light transmissive members, each located on an upper surface of a respective one of the light emitting element; a first cover member located on or above the mounting board, the first cover member including: a first reflective material containing layer disposed between the light emitting elements and containing a first reflective material, and a light transmissive layer disposed between the light transmissive members; and a second cover member disposed around the light emitting elements.
    Type: Grant
    Filed: September 29, 2021
    Date of Patent: September 19, 2023
    Assignee: NICHIA CORPORATION
    Inventors: Kenji Ozeki, Atsushi Kojima, Chinami Nakai
  • Patent number: 11481588
    Abstract: An image forming apparatus configured to perform high-quality image formation regardless of an accuracy of mounting surface emitting element array chips includes an image data generating portion configured to generate pixel data equivalent to 2,400 dpi; a joint correcting portion configured to correct a misregistration amount at a joint between a predetermined surface emitting element array chip and a surface emitting element array chip arranged adjacent to the predetermined surface emitting element array chip; and a resolution converting portion configured to convert a resolution of the pixel data from 2,400 dpi to 1,200 dpi. The joint correcting portion is configured to correct the misregistration amount at the joint with respect to pixel data obtained after the resolution thereof is converted by the resolution converting portion.
    Type: Grant
    Filed: December 23, 2020
    Date of Patent: October 25, 2022
    Assignee: Canon Kabushiki Kaisha
    Inventor: Toshitaka Noro
  • Patent number: 11402784
    Abstract: An image forming apparatus includes an image forming device, a density deviation detector, and processing circuitry. The circuitry performs a density deviation adjustment mode to: cause the image forming device to form a first image pattern having a uniform image density in the width direction on a surface of an image bearer; cause the detector to detect a first image density deviation in the width direction in the first pattern; adjust the first deviation based on a detection result of the first pattern; cause the image forming device to form a second image pattern on a surface of the image bearer after adjustment of the first deviation; cause the detector to detect a second image density deviation in the width direction in the second pattern; and correct a light intensity sensitivity in adjusting the second deviation, based on a detection result of the second pattern.
    Type: Grant
    Filed: April 5, 2021
    Date of Patent: August 2, 2022
    Assignee: Ricoh Company, Ltd.
    Inventors: Masashi Tachi, Tomohide Takenaka, Masaki Sukesako, Keita Sone
  • Patent number: 11385561
    Abstract: A driving apparatus is provided. The driving apparatus comprises a plurality of driving circuits configured to generate a current according to an inputted voltage. The plurality of driving circuits are formed on a single semiconductor chip, and each of the plurality of driving circuits comprises a plurality of output circuits configured to supply the current to a plurality of load elements arranged in at least one load element array.
    Type: Grant
    Filed: September 2, 2020
    Date of Patent: July 12, 2022
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Tatsuya Suzuki, Tatsuya Ryoki
  • Patent number: 11305530
    Abstract: A printing apparatus includes: a variable resistance circuit including a plurality of resistors intercoupled and one or more drive elements that feed currents through the respective resistors; an optical sensor coupled to the variable resistance circuit; a shift register that outputs signals to select one or more of the drive elements and to turn on the selected drive elements; and a controller that acquires a detection value of the optical sensor and that controls the shift register based on the detection value.
    Type: Grant
    Filed: September 18, 2020
    Date of Patent: April 19, 2022
    Assignee: Seiko Epson Corporation
    Inventors: Shinya Okazaki, Shinichi Yoshie
  • Patent number: 11207885
    Abstract: A liquid ejecting apparatus includes a head unit, the head unit includes an integrated circuit and an ejector, the integrated circuit includes a drive signal input terminal that inputs a first drive signal, a residual vibration signal output terminal that outputs a residual vibration signal, a differential signal receiving circuit that converts a pair of differential signals into a control signal and outputs the control signal, a drive signal selection circuit that outputs a second drive signal based on the control signal and the first drive signal, a drive signal output terminal that outputs the second drive signal to the ejector, a residual vibration signal output circuit that outputs a residual vibration signal, and a low-frequency circuit having a lower switching frequency than that of the residual vibration signal output circuit, and the low-frequency circuit is located between the differential signal receiving circuit and the residual vibration signal output circuit.
    Type: Grant
    Filed: June 25, 2020
    Date of Patent: December 28, 2021
    Inventor: Tomokazu Yamada
  • Patent number: 11199788
    Abstract: An exposure head includes a light emitter, a plurality of switches, a transmission line, and a plurality of delay circuits. In the light emitter, a plurality of light emitting elements are arranged in a first direction. The switches are provided respectively corresponding to the light emitting elements. The switches are configured to perform switching such that, when a drive signal is input, a drive current flows through a light emitting element corresponding to the drive signal. The transmission line is configured to supply a drive signal to the switches. The delay circuits are provided respectively corresponding to the switches. The delay circuits are configured to delay the drive signal that is supplied to the switches through the transmission line in order from a first end side to a second end side of the light emitting elements arranged in the first direction.
    Type: Grant
    Filed: September 18, 2020
    Date of Patent: December 14, 2021
    Assignee: TOSHIBA TEC KABUSHIKI KAISHA
    Inventor: Motoshi Ueda
  • Patent number: 11114582
    Abstract: A display apparatus includes a substrate, a first electrode on the substrate, the first electrode including a first portion that has a flat upper surface and a second portion that protrudes from the first portion and has an inclined surface, a second electrode facing the first electrode in parallel on the substrate, the second electrode including a first portion that has a flat upper surface and a second portion that protrudes from the first portion and has an inclined surface, and a plurality of light-emitting devices separate from each other on the first electrode and the second electrode, the light-emitting devices each having a first end contacting the upper surface of the first portion of the first electrode and a second end contacting the upper surface of the first portion of the second electrode.
    Type: Grant
    Filed: June 1, 2020
    Date of Patent: September 7, 2021
    Assignee: Samsung Display Co., Ltd.
    Inventors: Hyunmin Cho, Daehyun Kim, Sungchul Kim, Jonghyuk Kang, Keunkyu Song, Jooyeol Lee, Hyundeok Im, Chio Cho, Hyeyong Chu, Sungjin Hong
  • Patent number: 11106153
    Abstract: An image forming apparatus includes an exposure portion including a plurality of surface emitting elements configured to expose a photosensitive member, a drive unit configured to turn ON the surface emitting elements based on image information, and a light amount control unit configured to adjust a drive current value to control an amount of light to be emitted from the surface emitting elements; and a controller configured to output the image information to the exposure portion. The controller includes a light amount adjustment unit configured to correct the image information based on an adjustment value to adjust the amount of light to be emitted from the surface emitting elements and a medium tone processing unit configured to quantize the image information corrected by the light amount adjustment unit by error diffusion to reduce a number of tones in the image information.
    Type: Grant
    Filed: June 21, 2019
    Date of Patent: August 31, 2021
    Assignee: Canon Kabushiki Kaisha
    Inventor: Hidefumi Yoshida
  • Patent number: 11048185
    Abstract: An image controller of an image forming apparatus is configured to generate a light emission signal for detection for forming light emission for detection, and transmit the light emission signal for detection to a laser controller through a flexible flat cable, and the laser controller is configured to cause a semiconductor laser to emit light in accordance with the light emission signal for detection, and determine, based on a PD signal output from a PD that has received a light beam, whether improper connection has occurred in the flexible flat cable.
    Type: Grant
    Filed: March 27, 2020
    Date of Patent: June 29, 2021
    Assignee: Canon Kabushiki Kaisha
    Inventor: Kazumi Sato
  • Patent number: 10993431
    Abstract: A display device includes: a data driver for providing data voltages to data output lines; a data divider for coupling the data output lines to data lines; and a data compensator for compensating data voltages based on a load difference between data voltages in adjacent pixel rows.
    Type: Grant
    Filed: April 17, 2020
    Date of Patent: May 4, 2021
    Inventors: Mitsuru Fujii, Ji Ye Moon, Ju Gon Seok, Hoo Hyeon Lee
  • Patent number: 10999477
    Abstract: An image processing apparatus includes an acquisition unit configured to acquire a chromaticity value, which is a measurement result for a sheet to be measured, by using a sensor in which a light source has fixed characteristics; a designation unit configured to designate a condition under which the measurement result is acquired by the sensor; a determination unit configured to determine an optical brightening agent amount contained in the sheet; and a chromaticity value conversion unit configured to convert the chromaticity value, which is acquired by the acquisition unit, by using the condition designated by the designation unit and information about the optical brightening agent amount determined by the determination unit.
    Type: Grant
    Filed: June 7, 2019
    Date of Patent: May 4, 2021
    Assignee: Canon Kabushiki Kaisha
    Inventors: Aya Ito, Tomohisa Itagaki, Takaaki Yano
  • Patent number: 10971896
    Abstract: There is provided assemblies for combining a group of laser sources into a combined laser beam. There is further provided a blue diode laser array that combines the laser beams from an assembly of blue laser diodes. There are provided laser processing operations and applications using the combined blue laser beams from the laser diode arrays and modules.
    Type: Grant
    Filed: July 14, 2016
    Date of Patent: April 6, 2021
    Assignee: Nuburu, Inc.
    Inventors: Mark S. Zediker, Matthew Silva Sa, Jean Michel Pelaprat, David Hill, Mathew Finuf
  • Patent number: 10857816
    Abstract: An ink jet recording method includes an ink attachment step of discharging an aqueous white color ink containing a white color material from an ink jet head onto a recording medium having a white color recording surface with glossiness of 30 or less at an L* value of 75 or more, and attaching the aqueous white color ink onto the recording medium, and a drying step of drying the recording medium onto which the aqueous white color ink is attached, in which a ratio of glossiness of an attachment portion of the aqueous white color ink to the white color recording surface after the drying is two times or more.
    Type: Grant
    Filed: September 20, 2019
    Date of Patent: December 8, 2020
    Inventors: Yuta Asakawa, Akira Mizutani, Akiko Matsuzaki, Ippei Okuda
  • Patent number: 10834285
    Abstract: A printing apparatus comprises a plurality of sending units that respectively send signals; a plurality of receiving units provided on a printhead and respectively corresponding to the plurality of sending units, the plurality of receiving units receiving signals via a signal line; and a phase adjustment unit that, based on a phase difference of a plurality of signals respectively received by the plurality of receiving units, controls and outputs a delay of the plurality of signals. Each of the plurality of sending units sends a phase adjustment signal for phase adjustment to be performed by the phase adjustment unit, and a phase adjustment signal sent by a first sending unit includes a signal having a coordinate phase and an opposite phase with respect to a phase adjustment signal sent by a second sending unit.
    Type: Grant
    Filed: April 2, 2018
    Date of Patent: November 10, 2020
    Assignee: Canon Kabushiki Kaisha
    Inventor: Tatsuro Watanabe
  • Patent number: 10795152
    Abstract: A first mirror and a second mirror are disposed on a mounting surface of a housing in an exposure device of an image forming apparatus. A back surface of the first mirror is supported by ribs and the first mirror is pressed against the ribs by elastically pressing a reflecting surface thereof by a spring member. A reflecting surface of the second mirror is supported by ribs and the second mirror is pressed against the ribs by elastically pressing a back surface thereof by a spring member.
    Type: Grant
    Filed: February 7, 2018
    Date of Patent: October 6, 2020
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Atsushi Ueda, Atsuo Nakao
  • Patent number: 10739639
    Abstract: A backlight apparatus includes a circuit board, a control board, and a connection cable connecting the above components. A first light source driver and a second light source driver are disposed on the circuit board and are electrically connected to a plurality of first light sources and a plurality of second light sources respectively. A connector is disposed on the circuit board. The first and second light source drivers are individually electrically coupled in series to the connector. The control board outputs electrical power, a first data stream, and a second data stream. The first light source driver controls the plurality of first light sources to light individually according to the first data stream. The second light source driver controls the plurality of second light sources to light individually according to the second data stream. Thereby, the circuit board can control the operation of the light sources individually.
    Type: Grant
    Filed: January 7, 2019
    Date of Patent: August 11, 2020
    Assignee: DARFON ELECTRONICS CORP.
    Inventors: Ming-Yen Wu, Yen-Fu Chou, Wen-Jui Chiang
  • Patent number: 10710375
    Abstract: A method for printing includes analyzing print quality requirements for a printing area; adjusting settings for heater elements (e.g., energy and/or firing durations) of strobe lines based on the requirements analysis; and providing a plurality of individual strobe signals to the strobe lines. The strobe signals can be transmitted simultaneously, for example with a field-programmable gate array. Analyzing print quality requirements can include separating the printing area into one or more areas of interest, such as rows and/or columns. For each area of interest individual print quality settings (e.g., darkness, contrast, and/or media sensitivity) may be selected.
    Type: Grant
    Filed: August 24, 2018
    Date of Patent: July 14, 2020
    Assignee: Datamax-O'Neil Corporation
    Inventor: Teck Siong Soh
  • Patent number: 10557596
    Abstract: A light emitting device of an embodiment includes a body including a black epoxy molding compound (EMC) including carbon black; first and second lead frames electrically separated from each other by the body; a light emitting device disposed above at least one of the first or second lead frame; and a molding member disposed above the body and the first and second lead frames so as to surround the light emitting device.
    Type: Grant
    Filed: February 10, 2017
    Date of Patent: February 11, 2020
    Assignee: LG INNOTEK CO., LTD.
    Inventors: Dong Won Lee, Sung Ho Park, Min Kyu Lee
  • Patent number: 10417986
    Abstract: A data driving system of a liquid crystal display panel includes a timing control chip; a plurality of data driving chips; a plurality of first signal lines, which is used to transmit a predetermined data signal from the timing control chip to the plurality of data driving chips, each first signal line being provided between the timing control chip and one of the plurality of data driving chips in order to transmit the predetermined data signal from the timing control chip to the plurality of data driving chips; and a plurality of first transmission gates, each of which is provided on one of the plurality of first signal lines. The data driving system can significantly improve the quality of the received signal of the data driving chip, and can effectively avoid the error of the received signal.
    Type: Grant
    Filed: July 21, 2016
    Date of Patent: September 17, 2019
    Assignee: Shenzhen China Star Optoelectronics Technology Co., Ltd
    Inventor: Zhi Xiong
  • Patent number: 10238275
    Abstract: A light source driving apparatus according to an embodiment of the present technology includes a reception unit, an output unit, a sample unit, and a timing output unit. The reception unit receives a pulse modulation signal for pulse-driving a light source. The output unit outputs a delay modulation signal obtained by delaying the received pulse modulation signal to the light source. The sample unit samples, at a predetermined timing, a light amount of the light source driven on the basis of the delay modulation signal. The timing output unit outputs, to the sample unit, a pulse fall timing of the received pulse modulation signal as the predetermined timing.
    Type: Grant
    Filed: March 7, 2016
    Date of Patent: March 26, 2019
    Assignee: SONY CORPORATION
    Inventor: Zenya Nagashima
  • Patent number: 10210795
    Abstract: An LED display module is disclosed. The LED display module includes a substrate; a plurality of multi-pixel packages arrayed in a matrix with rows and columns, respectively, each of the multi-pixel packages including a package substrate and two or more pixels located on the package substrate and each of the pixels including a red LED chip, a green LED chip, and a blue LED chip; and a driver IC adapted to independently control the pixels of the multi-pixel packages. Anode terminals of the LED chips in the pixels adjacent in the row direction are connected in common to one another such that the pixels are scanned in rows in response to scan signals.
    Type: Grant
    Filed: November 15, 2017
    Date of Patent: February 19, 2019
    Assignee: LUMENS CO., LTD.
    Inventors: Jinmo Kim, Keunoh Kim, Junhyung Lim, Huikyeong Noh, Seongbok Yoon, Jinwon Choi, Jimin Her, Younghwan Shin, Kyujin Lee, Sol Han
  • Patent number: 10105963
    Abstract: A method for printing includes analyzing print quality requirements for a printing area; adjusting settings for heater elements (e.g., energy and/or firing durations) of strobe lines based on the requirements analysis; and providing a plurality of individual strobe signals to the strobe lines. The strobe signals can be transmitted simultaneously, for example with a field-programmable gate array. Analyzing print quality requirements can include separating the printing area into one or more areas of interest, such as rows and/or columns. For each area of interest individual print quality settings (e.g., darkness, contrast, and/or media sensitivity) may be selected.
    Type: Grant
    Filed: March 3, 2017
    Date of Patent: October 23, 2018
    Assignee: Datamax-O'Neil Corporation
    Inventor: Teck Siong Soh
  • Patent number: 10078289
    Abstract: A method of operating a printing system includes determining whether ghosting is expected on a photoreceptor and applying power to a laser applied to the photoreceptor based on whether the ghosting is expected.
    Type: Grant
    Filed: November 29, 2016
    Date of Patent: September 18, 2018
    Assignee: HP Indigo B.V.
    Inventors: Mark Sandler, Shai Lior
  • Patent number: 9818776
    Abstract: An imaging system may include an image sensor that may be a backside illuminated (BSI) image sensor. The BSI sensor may be bonded to an inactive silicon substrate or bonded to an active silicon substrate like a digital signal processor (DSP). Through-oxide vias (TOVs) may be formed in the image sensor die. A bond pad region may be formed on a light shielding layer to facilitate coupling the light shield to a ground source or other power sources. Color filter housing structures may be formed over active image sensor pixels on the image sensor die. In-pixel grid structures may be integrated with the color filter housing structures to help reduce crosstalk. The light shielding layer may also be formed over reference image sensor pixels on the image sensor die. The TOVs, the in-pixel grid structures, and the light shielding structures may be formed simultaneously.
    Type: Grant
    Filed: April 8, 2015
    Date of Patent: November 14, 2017
    Assignee: SEMICONDUCTOR COMPONENTS INDUSTRIES, LLC
    Inventors: Swarnal Borthakur, Marc Sulfridge
  • Patent number: 9754926
    Abstract: An electronic device may include a packaging substrate having a packaging substrate face with a plurality of electrically conductive pads on the packaging substrate face. A first light emitting diode die may bridge first and second ones of the electrically conductive pads. More particularly, the first light emitting diode die may include first anode and cathode contacts respectively coupled to the first and second electrically conductive pads using metallic bonds. Moreover, widths of the metallic bonds between the first anode contact and the first pad and between the first cathode contact and the second pad may be at least 60 percent of a width of the first light emitting diode die. A second light emitting diode die may bridge third and fourth ones of the electrically conductive pads. The second light emitting diode die may include second anode and cathode contacts respectively coupled to the third and fourth electrically conductive pads using metallic bonds.
    Type: Grant
    Filed: February 14, 2011
    Date of Patent: September 5, 2017
    Assignee: CREE, INC.
    Inventors: Matthew Donofrio, John Adam Edmond, Hua-Shuang Kong, Peter S. Andrews, David Todd Emerson
  • Patent number: 9660414
    Abstract: A heat dissipation system for an optical module, related to communication fittings technologies, is provided to improve heat dissipation efficiency of the optical module. The heat dissipation system for an optical module includes a circuit card on which at least one optical module is mounted, where the optical module includes a housing and a laser disposed inside the housing. A first heat dissipation apparatus is fixedly disposed on the circuit card. A heat dissipation window is provided in an area that is above the laser and on the housing of the optical module. The first heat dissipation apparatus performs heat dissipation on the heat dissipation window.
    Type: Grant
    Filed: November 23, 2015
    Date of Patent: May 23, 2017
    Assignee: Huawei Technologies CO., Ltd.
    Inventors: Shuliang Huang, Mingliang Hao, Zaomeng Liu
  • Patent number: 9612433
    Abstract: A drive circuit for a resonant system provides an excitation signal having an amplitude and a phase. The resonant system provides a feedback signal representing an oscillation amplitude. The amplitude of the excitation signal is reduced for a substantially constant feedback signal amplitude by modifying the excitation signal phase.
    Type: Grant
    Filed: May 21, 2015
    Date of Patent: April 4, 2017
    Assignee: Microvision, Inc.
    Inventors: Patrick J. McVittie, Jonathan A. Morarity, Damon M. Domjan
  • Patent number: 9568853
    Abstract: In APC, if light power control with different target light powers is continuously executed, the amplitude of an output signal from a light-receiving element after the light power control is changed is generated, and a long time is required for completion of the light power control after the change. To address the problem, light power control with the same target light power is continuously executed on at least two light-emitting points in APC.
    Type: Grant
    Filed: June 23, 2014
    Date of Patent: February 14, 2017
    Assignee: CANON KABUSHIKI KAISHA
    Inventor: Katsuyuki Yamazaki
  • Patent number: 9548736
    Abstract: Technology is described for a relative timed clock gated cell. In one example, the relative timed clock gated cell includes a trigger latch and a data clock latch. The trigger latch includes a clock input coupled to a trigger line for transmitting a trigger signal. The trigger latch is configured to generate a data clock signal on an output. The trigger signal is based on a clock signal. The data clock latch includes a clock input coupled to the output of the trigger latch that latches a data input of the data clock latch based on the data clock signal. Various other computing circuitries and methods are also disclosed.
    Type: Grant
    Filed: June 15, 2015
    Date of Patent: January 17, 2017
    Assignee: The University of Utah Research Foundation
    Inventors: Kenneth S. Stevens, William Lee
  • Patent number: 9542612
    Abstract: Methods, systems, and apparatus including computer program products for using extracted image text are provided. In one implementation, a computer-implemented method is provided. The method includes receiving an input of one or more image search terms and identifying keywords from the received one or more image search terms. The method also includes searching a collection of keywords including keywords extracted from image text, retrieving an image associated with extracted image text corresponding to one or more of the image search terms, and presenting the image.
    Type: Grant
    Filed: January 13, 2016
    Date of Patent: January 10, 2017
    Assignee: Google Inc.
    Inventors: Luc Vincent, Adrian Ulges
  • Patent number: 9505212
    Abstract: There is provided a liquid discharging apparatus including: a modulation portion which generates a modulation signal pulse-modulated from a source signal; a gate driver which generates an amplification control signal based on the modulation signal; a transistor which generates an amplification modulation signal amplified from the modulation signal based on the amplification control signal; a low pass filter which demodulates the amplification modulation signal and generates a driving signal; a feedback circuit which sends back the driving signal to the modulation portion; a boosting circuit which supplies a voltage which has been boosted based on any one of a first clock signal and a second clock signal to the gate driver; a boosting control portion which controls boosting in the boosting circuit; and a piezoelectric element which is displaced as the driving signal is applied.
    Type: Grant
    Filed: November 11, 2015
    Date of Patent: November 29, 2016
    Assignee: Seiko Epson Corporation
    Inventor: Tetsuo Takagi
  • Patent number: 9465312
    Abstract: A driving unit causes first and second light emitting units each to emit light in a time following a pulse duty with a light amount at a first light emission level for printing on an image portion in an image formable region of a photosensitive member according to input of print data, and causes the first and the second light emitting units each to emit light with a light amount at a second light emission level of weak light emission on a non-image portion in the image formable region of the photosensitive member, and an adjustment unit adjusts each of first, second, third, and fourth driving currents for a plurality of times in one job.
    Type: Grant
    Filed: June 6, 2013
    Date of Patent: October 11, 2016
    Assignee: Canon Kabushiki Kaisha
    Inventors: Masamichi Iida, Hideaki Hirasawa, Kiyoto Toyoizumi
  • Patent number: 9411257
    Abstract: An image forming apparatus is provided. The image forming apparatus includes a light source including a plurality of light emitting units to emit light corresponding to image data, and a light source controller to independently control lighting of each one of the light emitting units. The light source controller switches activation and deactivation of one or more of the light emitting units when the number of to-be-used light emitting units is smaller than the total number of the light emitting units included in the light source.
    Type: Grant
    Filed: July 13, 2015
    Date of Patent: August 9, 2016
    Assignee: RICOH COMPANY, LTD.
    Inventors: Yuki Honda, Takuma Nishio
  • Patent number: 9379169
    Abstract: OLED displays having a resolution of 300 dpi, 400 dpi, or greater are provided. Devices as disclosed may use one or more transistors, such as metal oxide transistors, which have a leakage current of not more than about 10?15 A/?m. Displays having sub-pixels with a largest dimension on the order of 60 ?m are also provided.
    Type: Grant
    Filed: September 14, 2012
    Date of Patent: June 28, 2016
    Assignee: Universal Display Corporation
    Inventors: Michael Hack, Michael Stuart Weaver, Julia J. Brown, Woo-Young So
  • Patent number: 9252693
    Abstract: In a stepping motor drive device, it is possible to prevent malfunction due to negative current from a stepping motor of a plurality of power MOSFETs that apply drive voltage in a complementary way to paired coils of the stepping motor. A fall delay circuit delays the timing of the fall of input pulse signals applied in a complementary way to the gate of each of a plurality of MOSFETs that apply drive voltage in a complementary way to paired coils of a stepping motor by a time Td, wherein Td>Trise?Tfall, in accordance with a rise time Trise when turning on, and a fall time Tfall when turning off, the relevant MOSFET, and after one MOSFET is turned on, another MOSFET is turned off.
    Type: Grant
    Filed: June 13, 2014
    Date of Patent: February 2, 2016
    Assignee: FUJI ELECTRIC CO., LTD.
    Inventor: Morio Iwamizu
  • Patent number: 9215768
    Abstract: A lighting unit (100) includes light emitting diode (LED) modules (120, 300) and a lighting driver (110, 200) connected to the LED modules. Each LED module includes LEDs (323) and an identification current source (324) supplying an identification current to an identification current output node (180, 380). All of the identification current output nodes are connected together to supply a total identification current having a magnitude which changes in response to the number of LED modules that are connected to the lighting driver. The lighting driver includes: a controllable current source (220 & 250) to supply an LED driving current to the LEDs of the LED modules, and a controller (230) that responds to the total identification current to control the controllable current source to supply the LED driving current at a magnitude which changes in response to the number of LED modules that are connected to the lighting driver.
    Type: Grant
    Filed: May 28, 2013
    Date of Patent: December 15, 2015
    Assignee: KONINKLIJKE PHILIPS N.V.
    Inventors: Geert Willem Van Der Veen, Tijmen Cornelis Van Bodegraven
  • Patent number: 9155148
    Abstract: A light source drive device includes a first current source which provides a predetermined current to a light source corresponding to a predetermined light output, and a second current source which provides an overshoot current to the light source synchronized with the predetermined current. A processor is configured to set an overshoot time during which the overshoot current is provided to the light source. Further, an overshoot current is set which is applied to the light source. The overshoot time is set so that the overshoot time based on the rising of the predetermined current to when a light emission of the light source is detected.
    Type: Grant
    Filed: May 16, 2012
    Date of Patent: October 6, 2015
    Assignee: RICOH COMPANY, LTD.
    Inventors: Masaaki Ishida, Atsufumi Omori, Hayato Fujita
  • Patent number: 9128406
    Abstract: Disclosed is an array of light emitting semiconductor components for use in a digital printer. Each component includes a driver and at least one light emitting device. The array includes data buses connecting to first subsets of components, forming a first partition of said component. The array further includes auxiliary buses connecting to second subsets of components, forming a second partition of the components. The first partition and the second partition are chosen such that each component can be uniquely identified by the subset of the first and second partition to which it belongs. The data buses are configured to supply instructions to the first subsets of components. Each component is configured to extract instructions on the basis of its membership of a particular subset according to the second partition.
    Type: Grant
    Filed: October 7, 2013
    Date of Patent: September 8, 2015
    Assignee: Xeikon IP B.V.
    Inventor: Romain Jan Victor Paul van der Gucht
  • Patent number: 9081192
    Abstract: An optical scanning device includes a light source, a scanning portion that includes plural reflection surfaces, makes light beams incident to the reflection surface such that optical axis directions of the light beams emitted from the light emitting parts are tilted with respect to a direction perpendicular to the reflection surface, and scans the light beams in the main scanning direction through rotation, an optical system that includes an optical member made of a resin, is disposed between the scanning portion and the surface to be scanned, and makes the plural light beams incident to the surface to be scanned such that optical axes of the plural light beams are parallel to each other, and a correction portion that is provided in the optical system, and corrects positional deviation of scanning lines of the light beams in the sub-scanning direction on the surface to be scanned.
    Type: Grant
    Filed: May 31, 2013
    Date of Patent: July 14, 2015
    Assignee: FUJI XEROX CO., LTD.
    Inventor: Yoshiyuki Suzuki
  • Patent number: 9071173
    Abstract: A CPU determines that a motor is undergoing a forward rotation when a time difference between a detection timing of a light beam deflected by a rotating polygonal mirror and an output timing of a detection signal from a magnetic detector element falls within a predetermined range, and that the motor is undergoing a reverse rotation when the time difference does not fall within the predetermined range. With this configuration, a detection circuit for detecting voltage induced in three phases is unnecessary, and therefore the cost can be reduced. Furthermore, there is no need to detect voltage induced in each of the three phases. As it suffices to simply detect the time difference, the amount of time required to detect a rotation direction can be reduced.
    Type: Grant
    Filed: September 11, 2012
    Date of Patent: June 30, 2015
    Assignee: CANON KABUSHIKI KAISHA
    Inventor: Toshikazu Tsuchiya
  • Patent number: 9058768
    Abstract: A display device including a display panel having first pixels emitting light in a first field and second pixels emitting light in a second field is disclosed. According to one aspect, the display device includes a controller configured to extract first field data transmitted to the first pixels and second field data transmitted to the second pixels from input data, divide the first field data, insert black data between two neighboring first field data to generate first output data, divide the second field data, and insert black data between two neighboring second field data to generate second output data. The display device also includes a data driver configured to transmit a first data signal based on the first output data to the display panel in the first field and transmitting a second data signal based on the second output data to the display panel in the second field.
    Type: Grant
    Filed: July 30, 2012
    Date of Patent: June 16, 2015
    Assignee: Samsung Display Co., Ltd.
    Inventors: Seung-Woo Lee, An-Su Lee, Do-Youb Kim
  • Patent number: 9053958
    Abstract: An electronic device may include a packaging substrate having a packaging face and first and second pluralities of light emitting diodes electrically and mechanically coupled to the packaging face of the packaging substrate. The packaging substrate may include first and second electrically conductive pads on the packaging face. The light emitting diodes of the first plurality of light emitting diodes may be electrically coupled in parallel between the first electrically conductive pad and an interconnection structure on the packaging face. The light emitting diodes of the second plurality of light emitting diodes may be electrically coupled in parallel between the interconnection structure and the second electrically conductive pad.
    Type: Grant
    Filed: May 3, 2012
    Date of Patent: June 9, 2015
    Assignee: Cree, Inc.
    Inventors: Matthew Donofrio, Christopher P. Hussell, John Adam Edmond
  • Patent number: 9041757
    Abstract: An image forming apparatus including a control unit configured to cause the light irradiation unit to irradiate the photosensitive member at an image forming portion to which toner particles adhere with light emitted from the light source by a first light emission amount, and cause the light irradiation unit to irradiate the photosensitive member at a non-image forming portion to which no toner particles adhere with light emitted from the light source by a second light emission amount that is smaller than the first light emission amount. The image forming apparatus further includes an adjusting unit configured to adjust the first light emission amount and the second light emission amount, and an acquisition unit configured to acquire information relating to a speed of surface of the photosensitive member. The adjusting unit is configured to change the second light emission amount according to information acquired by the acquisition unit.
    Type: Grant
    Filed: June 5, 2013
    Date of Patent: May 26, 2015
    Assignee: Canon Kabushiki Kaisha
    Inventors: Masahiro Hayakawa, Kengo Kawamoto
  • Patent number: 9041758
    Abstract: An optical scanning device includes: a driving unit that drives a light source that outputs multiple light beams; a deflecting unit that scans a scanning surface in a main-scanning direction by deflecting the light beams, the scanning surface moving at a predetermined line speed in a sub-scanning direction; and a control unit that changes number of the light beams according to the line speed by controlling the driving unit, changes a scanning speed of the deflecting unit in the main-scanning direction according to a difference between an exposure amount per unit length in the main-scanning direction after a change in the number of the light beams and a predetermined exposure amount, and changes light intensity of each of the light beams output by the light source according to an amount of a change in the scanning speed.
    Type: Grant
    Filed: July 22, 2013
    Date of Patent: May 26, 2015
    Assignee: RICOH COMPANY, LIMITED
    Inventor: Nobuyoshi Kaima
  • Patent number: 9041759
    Abstract: A laser scanning unit includes a laser light source, rotating polygon mirror, drive motor, and entry detection, intensity detection, intensity adjustment, and drive control portions. The laser light source radiates first and second laser lights in first second directions, respectively. The drive motor rotates the polygon mirror reflecting the first laser light. The intensity adjustment portion adjusts the first laser light in accordance with the second laser light detected by the intensity detection portion, until a second time after a first time has elapsed since the first laser light entry detection by the entry detection portion. The drive control portion, upon adjustment by the intensity adjustment portion, drives the drive motor at a first rotation speed, wherein a return light entry timing is included within the first time or from when the second time has elapsed to the timing of the entry detection portion detection.
    Type: Grant
    Filed: August 14, 2013
    Date of Patent: May 26, 2015
    Assignee: KYOCERA Document Solutions Inc.
    Inventor: Hironobu Oi
  • Patent number: 9035988
    Abstract: A light source driving device which drives a plurality of light emitting parts provided in a light source to emit a plurality of light beams based on image information, includes a plurality of driving circuits configured to drive the plurality of light emitting parts. Each of the driving circuits includes a signal generation circuit that generates a modulation signal to control a light emitting intensity of the corresponding light emitting part based on the image information, a detection circuit that detects a light emitting status of the corresponding light emitting part; and a light emitting circuit that outputs a driving signal to the corresponding light emitting part to emit a light beam in accordance with the modulation signal and adjustment data obtained based on the light emitting status of at least one of the plurality of light emitting parts.
    Type: Grant
    Filed: May 23, 2008
    Date of Patent: May 19, 2015
    Assignee: RICOH COMPANY, LTD.
    Inventors: Yasuhiro Nihei, Masaaki Ishida, Atsufumi Omori, Jun Tanabe
  • Patent number: 9024992
    Abstract: The oscillation element according to the present invention includes a torsion bar mounted on a base, and an oscillating member having a light reflection surface for reflecting light from a light source, which is fixed on the torsion bar protruding from the base. The oscillating member oscillates about a longitudinal axis of the torsion bar with an elastic deformation of the torsion bar, thereby deflecting the light that reflects at the light reflection surface in a direction intersecting the longitudinal axis. The oscillating member has two plates that are joined together so as to sandwich the torsion bar. On joining surfaces of the plates are provided with grooves for receiving the torsion bar, respectively. The plates have a symmetrical shape that the longitudinal axis serves as the axis of symmetry.
    Type: Grant
    Filed: January 4, 2012
    Date of Patent: May 5, 2015
    Assignee: Canon Denshi Kabushiki Kaisha
    Inventors: Takayuki Wakabayashi, Naruki Suzuki, Katsumi Arai, Yaomin Zhou