Patents by Inventor Yoshikazu Watanabe
Yoshikazu Watanabe has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20190384204Abstract: An optical recording device includes: a lens array in which a plurality of lenses is arranged at least in a main scanning direction; a light emitting element substrate that is arranged in proximity to the lens array, and includes a light emitting element group in which a plurality of light emitting elements forming one pixel is arranged for each lens position of the lens array; and a light emission controller that controls the light emitting elements, wherein, in the light emitting element substrate, at least a light emitting element arranged on an end side in the main scanning direction is a special light emitting element, and the light emission controller is able to adjust an irradiation position irradiated with light from the special light emitting element through the lens array by selectively allowing a plurality of light sources in the special light emitting element to emit light.Type: ApplicationFiled: May 16, 2019Publication date: December 19, 2019Inventors: Yoshikazu WATANABE, Sotaro YOKOTA
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Patent number: 10481519Abstract: A print head includes: current-driven non-single crystal light emitting elements arranged in a line; thin film transistors that are provided in one-to-one correspondence with the light emitting elements and each supplies a driving current to a corresponding one of the light emitting elements; a detector that detects, when one of the light emitting elements corresponding to one of the thin film transistors emits light, an output voltage of the one of the thin film transistors; and a hardware processor that determines a control voltage to be applied to each of the thin film transistors when next light is emitted according to the output voltage of the one of the thin film transistors detected by the detector and a driving current to be supplied by each of the thin film transistors to cause each of the light emitting elements to emit light with a target light amount.Type: GrantFiled: September 14, 2017Date of Patent: November 19, 2019Assignee: Konica Minolta, Inc.Inventors: So Yano, Yoshikazu Watanabe, Sotaro Yokota
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Patent number: 10482357Abstract: An optical print head including light emitting elements, drivers, setters, a detector, and a generator. The detector is for detecting a noise component superimposed on a luminance signal, on transmission circuitry for transmitting the luminance signal from a setter to a driver, in a state in which the setter is outputting the luminance signal. The generator, for each light emitting element due to emit light in a line subsequent to a line for which the detector detected the noise component, generates and causes a setter corresponding to the light emitting element to output an adjusted luminance signal such that the light emitting element emits a light emission amount according to image data in a state in which the noise component detected by the detector is superimposed on the adjusted luminance signal.Type: GrantFiled: January 25, 2018Date of Patent: November 19, 2019Assignee: KONICA MINOLTA, INC.Inventors: So Yano, Yoshikazu Watanabe, Sotaro Yokota
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Patent number: 10469693Abstract: An optical PH includes: a plurality of current-driven light emitting elements that are arranged in a line-shaped region; a controller that outputs a control voltage instructing an amount of a drive current to be supplied to each of the light emitting elements; and a plurality of drivers that correspond one-to-one with the light emitting elements, and each supply the drive current to a corresponding one of the light emitting elements, wherein the drivers each operate as one of: a high-voltage referring driver that supplies the drive current according to a voltage difference between the control voltage and a reference voltage higher than the control voltage; and a low-voltage referring driver that supplies the drive current according to a voltage difference between the control voltage and a reference voltage lower than the control voltage.Type: GrantFiled: March 27, 2018Date of Patent: November 5, 2019Assignee: KONICA MINOLTA, INC.Inventors: Yoshikazu Watanabe, So Yano, Sotaro Yokota
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Patent number: 10379459Abstract: An image forming device includes: element arrays each including light emitting elements arranged in main scanning direction, the arrays being arranged in sub scanning direction; a photoreceptor whose surface moves relative to the light emitting elements in the sub scanning direction; a controller outputting control voltage instructing light emission amount for each light emitting element; and drivers each supplying drive current to a corresponding light emitting element according to the control voltage, thus causing the light emitting element to emit light to expose the moving surface of the photoreceptor. Intervals L between the arrays satisfy (D/2)×(V/F)?((V/F)×0.1)?L?(D/2)×(V/F)+((V/F)×0.1) where F expresses frequency of AC noise to be superimposed on the control voltage, V expresses system speed of the surface of the photoreceptor moving relative to the light emitting elements, and D is an odd number.Type: GrantFiled: April 5, 2018Date of Patent: August 13, 2019Assignee: Konica Minolta, Inc.Inventors: Yoshikazu Watanabe, So Yano, Sotaro Yokota
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Publication number: 20190207806Abstract: An information processing system according to the present invention includes: a relay device communicates with a server through a first communication line and a device through a second communication line, and relays data between the first communication line and the second communication line; an auxiliary relay device communicates with the server through a third communication line and the device through the second communication line, and relays data between the third communication line and the second communication line; and a management device detects a failure on the first communication line and controls the auxiliary relay device in such a way as to establish an alternative communication channel by using the third communication line and the auxiliary relay device when the failure is detected and to deliver the auxiliary relay device to a location where the auxiliary relay device is connected to the second communication line.Type: ApplicationFiled: May 17, 2017Publication date: July 4, 2019Applicant: NEC CorporationInventor: Yoshikazu WATANABE
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Publication number: 20180314184Abstract: An image forming device includes: element arrays each including light emitting elements arranged in main scanning direction, the arrays being arranged in sub scanning direction; a photoreceptor whose surface moves relative to the light emitting elements in the sub scanning direction; a controller outputting control voltage instructing light emission amount for each light emitting element; and drivers each supplying drive current to a corresponding light emitting element according to the control voltage, thus causing the light emitting element to emit light to expose the moving surface of the photoreceptor. Intervals L between the arrays satisfy (D/2)×(V/F)?((V/F)×0.1?L?(D/2)×(V/F)+((V/F)×0.1) where F expresses frequency of AC noise to be superimposed on the control voltage, V expresses system speed of the surface of the photoreceptor moving relative to the light emitting elements, and D is an odd number.Type: ApplicationFiled: April 5, 2018Publication date: November 1, 2018Applicant: KONICA MINOLTA, INC.Inventors: Yoshikazu Watanabe, So Yano, Sotaro Yokota
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Patent number: 10104359Abstract: A disparity value deriving device includes a calculator configured to calculate costs of candidates for a corresponding region in a comparison image that corresponds to a reference region in a reference image, based on luminance values of the regions. The device also includes a changer configured to change a cost exceeding a threshold to a value higher than the threshold; a synthesizer configured to synthesize a cost of a candidate for a corresponding region for one reference region after the change and a cost of a candidate for a corresponding region for another reference region after the change; and a deriving unit configured to derive a disparity value based on a position of the one reference region and a position of the corresponding region in the comparison image for which the cost after the synthesis is smallest.Type: GrantFiled: December 12, 2014Date of Patent: October 16, 2018Assignee: RICOH COMPANY, LIMITEDInventors: Kiichiroh Saitoh, Yoshikazu Watanabe, Soichiro Yokota, Ryohsuke Tamura, Wei Zhong
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Publication number: 20180288266Abstract: An optical PH includes: a plurality of current-driven light emitting elements that are arranged in a line-shaped region; a controller that outputs a control voltage instructing an amount of a drive current to be supplied to each of the light emitting elements; and a plurality of drivers that correspond one-to-one with the light emitting elements, and each supply the drive current to a corresponding one of the light emitting elements, wherein the drivers each operate as one of: a high-voltage referring driver that supplies the drive current according to a voltage difference between the control voltage and a reference voltage higher than the control voltage; and a low-voltage referring driver that supplies the drive current according to a voltage difference between the control voltage and a reference voltage lower than the control voltage.Type: ApplicationFiled: March 27, 2018Publication date: October 4, 2018Inventors: Yoshikazu WATANABE, So YANO, Sotaro YOKOTA
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Patent number: 10050895Abstract: Provided is a terminal device capable of recognizing communication traffic in a mobile network for each piece of application software. Communication control means 91 controls packet transfer means for transmitting a packet. Instruction information imparting means 92 imparts instruction information representing an instruction for the communication control means 91 to the communication control means 91. The communication control means 91 acquires statistical information including communication traffic for each flow from the packet transfer means and retains the statistical information along with information on application software which is a flow transmission source and information on an access network used for communication. The instruction information imparting means 92 acquires statistical information of each access network from the communication control means 91 for each piece of application software.Type: GrantFiled: September 3, 2014Date of Patent: August 14, 2018Assignee: NEC CorporationInventors: Shuichi Karino, Yoshinori Saida, Yoshikazu Watanabe, Gen Morita, Takahiro Iihoshi
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Publication number: 20180218244Abstract: An optical print head including light emitting elements, drivers, setters, a detector, and a generator. The detector is for detecting a noise component superimposed on a luminance signal, on transmission circuitry for transmitting the luminance signal from a setter to a driver, in a state in which the setter is outputting the luminance signal. The generator, for each light emitting element due to emit light in a line subsequent to a line for which the detector detected the noise component, generates and causes a setter corresponding to the light emitting element to output an adjusted luminance signal such that the light emitting element emits a light emission amount according to image data in a state in which the noise component detected by the detector is to superimposed on the adjusted luminance signal.Type: ApplicationFiled: January 25, 2018Publication date: August 2, 2018Inventors: So Yano, Yoshikazu Watanabe, Sotaro Yokota
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Patent number: 10038641Abstract: There is provided a flow control device for controlling flow control rules defining processing contents per flow in a packet transfer device for processing packets belonging to a flow between a first communication device and a second communication device, which receives a packet reception notification indicating that the packet transfer device receives a packet from at least one of the first communication device and the second communication device from the packet transfer device, determines a flow control rule to be notified to the packet transfer device in response to the received packet reception notification, manages a packet reception notification reception time when the packet reception notification is received, and calculates a first round-trip transmission delay time between two devices among the first communication device, the second communication device, and the packet transfer device based on the packet reception notification reception times.Type: GrantFiled: March 11, 2015Date of Patent: July 31, 2018Assignee: NEC CorporationInventors: Gen Morita, Shuichi Karino, Yoshinori Saida, Yoshikazu Watanabe, Takahiro Iihoshi
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Patent number: 9942823Abstract: To provide a communication terminal capable of selecting a communication interface corresponding to a communicable wireless network without the use of a route determination dedicated packet. A packet generation means 93 generates a packet based on data for receiving a service from a destination device. A control means 94 selects a communication interface 91 from among a plurality of communication interfaces 91, instructs a packet processing means 95 to send a packet generated by the packet generation means 93 to the communication interface 91, and when a response packet for the packet is not input until a timeout determination reference time, selects a different communication interface 91 from the communication interface 91, instructs the packet processing means 95 to send a copy of the packet to the communication interface 91.Type: GrantFiled: November 4, 2014Date of Patent: April 10, 2018Assignee: NEC CORPORATIONInventors: Takahiro Iihoshi, Yoshikazu Watanabe, Shuichi Karino, Gen Morita, Yoshinori Saida
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Patent number: 9921515Abstract: An optical writing device having; a plurality of light-emitting points; a photodiode configured to output a signal which represents a quantity of incident light from a predetermined light-emitting point selected from the plurality of light-emitting points; and a calculation section for calculating a temperature of the photodiode based on a magnitude of a photodiode dark current included in the signal output from the photodiode while the predetermined light-emitting point is OFF.Type: GrantFiled: October 10, 2014Date of Patent: March 20, 2018Assignee: Konica Minolta, Inc.Inventors: So Yano, Satoshi Masuda, Makoto Obayashi, Masayuki Iijima, Yoshikazu Watanabe
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Publication number: 20180074432Abstract: A print head includes: current-driven non-single crystal light emitting elements arranged in a line; thin film transistors that are provided in one-to-one correspondence with the light emitting elements and each supplies a driving current to a corresponding one of the light emitting elements; a detector that detects, when one of the light emitting elements corresponding to one of the thin film transistors emits light, an output voltage of the one of the thin film transistors; and a hardware processor that determines a control voltage to be applied to each of the thin film transistors when next light is emitted according to the output voltage of the one of the thin film transistors detected by the detector and a driving current to be supplied by each of the thin film transistors to cause each of the light emitting elements to emit light with a target light amount.Type: ApplicationFiled: September 14, 2017Publication date: March 15, 2018Applicant: Konica Minolta, Inc.Inventors: So YANO, Yoshikazu WATANABE, Sotaro YOKOTA
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Patent number: 9819927Abstract: Disclosed is an image processing device for generating disparity information from a first image and a second image, wherein the first image is captured by a first capture unit and the second image is captured by a second capture unit. The image processing device includes a disparity detector configured to detect disparity information of a pixel or a pixel block of the second image by correlating the pixel or the pixel block of the second image with each of pixels or each of pixel blocks of the first image within a detection width. The disparity detector is configured to detect the disparity information of the pixel or the pixel block of the second image more than once by changing a start point of pixels or pixel blocks of the first image within the detection width.Type: GrantFiled: May 13, 2015Date of Patent: November 14, 2017Assignee: Ricoh Company, Ltd.Inventors: Yuji Takahashi, Hiroyoshi Sekiguchi, Eita Watanabe, Yoshikazu Watanabe, Reiko Kuromizu
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Publication number: 20170302558Abstract: A measuring apparatus includes, a control means that measures a packet processing time of a communication processing means that performs packet processing of a communication flow with use of a cache memory for a plurality of communication flows, and calculates, from a measurement result, a packet processing time during which no cache miss occurs and a processing delay time due to a cache miss.Type: ApplicationFiled: October 5, 2015Publication date: October 19, 2017Applicant: NEC CorporationInventor: Yoshikazu WATANABE
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Patent number: 9747524Abstract: A disparity value deriving device includes an acquisition unit configured to acquire a degree of matching between a reference region in a reference image captured from a first imaging position and each of a plurality of region in a designated range including a corresponding region to the reference region in a comparison image captured from a second imaging position; a synthesizer configured to synthesize the degree of matching of a reference region in neighborhood of a predetermined reference region in the reference image and the degree of matching of the predetermined reference region in the reference image; and a deriving unit configured to derive a disparity value of an object whose image is being captured in the predetermined reference region and a corresponding region to the predetermined reference region, based on a synthesized degree of matching obtained by the synthesizer.Type: GrantFiled: February 23, 2015Date of Patent: August 29, 2017Assignee: RICOH COMPANY, LTD.Inventors: Wei Zhong, Yoshikazu Watanabe, Soichiro Yokota, Kiichiroh Saitoh, Ryohsuke Tamura
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Patent number: 9686006Abstract: A wireless communication system includes a first communication station that connects with a higher-order station or a lower-order station in a communication path of multi-hop wireless communication and that carries out wireless communication with a mobile terminal in access areas in predetermined wireless resources that differ from relay areas for wireless communication with the higher-order station or the lower-order station in the wireless resources, and a second communication station that constitutes a communication path that differs from the communication path of the multi-hop wireless communication, that uses the wireless resources to carry out wireless communication with a mobile terminal, and that acquires information indicating the relay areas in the wireless resources.Type: GrantFiled: June 4, 2015Date of Patent: June 20, 2017Assignee: NEC CORPORATIONInventor: Yoshikazu Watanabe
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Publication number: 20170164262Abstract: To provide a communication terminal capable of selecting a communication interface corresponding to a communicable wireless network without the use of a route determination dedicated packet. A packet generation means 93 generates a packet based on data for receiving a service from a destination device. A control means 94 selects a communication interface 91 from among a plurality of communication interfaces 91, instructs a packet processing means 95 to send a packet generated by the packet generation means 93 to the communication interface 91, and when a response packet for the packet is not input until a timeout determination reference time, selects a different communication interface 91 from the communication interface 91, instructs the packet processing means 95 to send a copy of the packet to the communication interface 91.Type: ApplicationFiled: November 4, 2014Publication date: June 8, 2017Inventors: Takahiro IIHOSHI, Yoshikazu WATANABE, Shuichi KARINO, Gen MORITA, Yoshinori SAIDA