Patents by Inventor Tsuyoshi Kuroiwa
Tsuyoshi Kuroiwa 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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Patent number: 11830461Abstract: A display driver comprises an interface and signal supply circuitry. The interface is configured to receive image data. The signal supply circuitry is configured to supply at least one drive control signal to a display panel based on a detection of a data error in the image data associated with a first horizontal line in a first vertical sync period, causing a first pixel circuit and a second pixel circuit hold, in the first vertical sync period, first hold voltages based in part on at least one drive control signal and second hold voltages held in a second vertical sync period prior to the first vertical sync period. The first pixel circuit is associated with the first horizontal line, and the second pixel circuit is associated with a second horizontal line and driven after the first pixel circuit.Type: GrantFiled: December 19, 2019Date of Patent: November 28, 2023Assignee: Synaptics IncorporatedInventors: Tsuyoshi Kuroiwa, Hirokazu Hatayama, Takefumi Seno
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Patent number: 11137856Abstract: A sensing device comprises sensor electrodes arranged in an array of rows and columns, and vias. A first vias is arranged in a first direction, and corresponds to a first column of sensor electrodes adjacent to a first side edge of the sensing device. A second via is arranged in a second direction different than the first direction, and corresponds to a second column of the sensor electrodes adjacent to a second side edge of the sensing device. Each of the sensor electrodes is configured to be coupled to a routing trace through one of the vias. In a first row of the plurality of sensor electrodes, a two vias are different distances from the first side edge and in a second row of the plurality of sensor electrodes, two vias are different distances from the second side edge.Type: GrantFiled: August 1, 2018Date of Patent: October 5, 2021Assignee: Synaptics IncorporatedInventors: Petr Shepelev, Tetsuo Tanemura, HaThanh Nguyen, Takayuki Noto, Hiroshi Takeyama, Takeshi Hashimoto, Tsuyoshi Kuroiwa, Arnulf Graf
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Publication number: 20200202818Abstract: A display driver comprises an interface and signal supply circuitry. The interface is configured to receive image data. The signal supply circuitry is configured to supply at least one drive control signal to a display panel based on a detection of a data error in the image data associated with a first horizontal line in a first vertical sync period, causing a first pixel circuit and a second pixel circuit hold, in the first vertical sync period, first hold voltages based in part on at least one drive control signal and second hold voltages held in a second vertical sync period prior to the first vertical sync period. The first pixel circuit is associated with the first horizontal line, and the second pixel circuit is associated with a second horizontal line and driven after the first pixel circuit.Type: ApplicationFiled: December 19, 2019Publication date: June 25, 2020Inventors: Tsuyoshi KUROIWA, Hirokazu HATAYAMA, Takefumi SENO
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Publication number: 20200167040Abstract: A sensing device comprises sensor electrodes arranged in an array of rows and columns, and vias. A first vias is arranged in a first direction, and corresponds to a first column of sensor electrodes adjacent to a first side edge of the sensing device. A second via is arranged in a second direction different than the first direction, and corresponds to a second column of the sensor electrodes adjacent to a second side edge of the sensing device. Each of the sensor electrodes is configured to be coupled to a routing trace through one of the vias. In a first row of the plurality of sensor electrodes, a two vias are different distances from the first side edge and in a second row of the plurality of sensor electrodes, two vias are different distances from the second side edge.Type: ApplicationFiled: August 1, 2018Publication date: May 28, 2020Inventors: Petr SHEPELEV, Tetsuo TANEMURA, HaThanh NGUYEN, Takayuki NOTO, Hiroshi TAKEYAMA, Takeshi HASHIMOTO, Tsuyoshi KUROIWA, Arnulf GRAF
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Patent number: 10642405Abstract: The drive control device includes a display control part and a touch control part. The display control part includes a control circuit operable to control first and second frame modes, and a clock pulse generator operable to produce a display line clock signal in synchronization with a display line switching cycle. The control circuit changes display and non-display drive terms in start timing on an individual display frame period basis in the first frame mode. In the second frame mode, each display frame period includes only one display drive term; the display drive term is not interrupted by a non-display drive term halfway. The second frame mode is arranged so that the cycle of the display line clock signal in synchronization with the display line switching cycle is made longer than that in the first frame mode.Type: GrantFiled: March 16, 2017Date of Patent: May 5, 2020Assignee: Synaptics Japan GKInventors: Tsuyoshi Kuroiwa, Takayuki Noto, Mitsunori Takanashi
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Patent number: 10402023Abstract: Provided is a technique which enables the avoidance of a temporal damage to a panel module, and keeps a voltage load on a display panel circuit node from becoming excessively large even if a constant voltage is applied to the node for a longer time exceeding a display drive term in a non-display drive term, provided that a display frame period is divided to have display and non-display drive terms. In performing display and touch-sensing actions on condition that a display frame period is divided to include display and non-display drive terms, an operation source voltage supplied to a panel module during the non-display term where touch sensing is performed is smaller, in absolute value, than that supplied in the display term, whereby a voltage load applied to an input circuit node of a panel module for a longer time exceeding the display term is kept from being excessively large.Type: GrantFiled: April 21, 2017Date of Patent: September 3, 2019Assignee: Synaptics Japan GKInventor: Tsuyoshi Kuroiwa
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Patent number: 10388210Abstract: A system and method for driving horizontal lines comprising detecting one or more errors within display data corresponding to one or more of the horizontal lines and generating second display data for a first horizontal line when the first display data for the first horizontal line is determined to include a data error, wherein the second display data is based on the first display data for a second horizontal line of the plurality of horizontal lines.Type: GrantFiled: October 20, 2017Date of Patent: August 20, 2019Assignee: Synaptics Japan GKInventor: Tsuyoshi Kuroiwa
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Patent number: 10250259Abstract: A system and method for digital signal reception comprise outputting first and second digital transmission signals complementary to each other. Further, a first and second output signals are outputted. The first output signal has a logical value based on a product of a logical value of the first digital transmission signal and a logical value complementary to a logical value of the second digital transmission signal is outputted. The second output signal has a logical value based on a sum of a logical value complementary to the logical value of the first digital transmission signal and the logical value of the second digital transmission signal.Type: GrantFiled: March 20, 2018Date of Patent: April 2, 2019Assignee: Synaptics Japan GKInventor: Tsuyoshi Kuroiwa
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Publication number: 20180278251Abstract: A system and method for digital signal reception comprise outputting first and second digital transmission signals complementary to each other. Further, a first and second output signals are outputted. The first output signal has a logical value based on a product of a logical value of the first digital transmission signal and a logical value complementary to a logical value of the second digital transmission signal is outputted. The second output signal has a logical value based on a sum of a logical value complementary to the logical value of the first digital transmission signal and the logical value of the second digital transmission signal.Type: ApplicationFiled: March 20, 2018Publication date: September 27, 2018Inventor: Tsuyoshi KUROIWA
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Patent number: 10070018Abstract: A display driver for a display device including a sync extraction circuit configured to generate a vertical sync source signal in response to a vertical sync period start instruction indicating a start of a vertical sync period, a timing generator configured to generate an internal vertical sync signal in response to the vertical sync source signal; and a drive circuit configured to drive the display panel in synchronization with the internal vertical sync signal.Type: GrantFiled: August 17, 2017Date of Patent: September 4, 2018Assignee: Synaptics Japan GKInventor: Tsuyoshi Kuroiwa
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Publication number: 20180114480Abstract: A system and method for driving horizontal lines comprising detecting one or more errors within display data corresponding to one or more of the horizontal lines and generating second display data for a first horizontal line when the first display data for the first horizontal line is determined to include a data error, wherein the second display data is based on the first display data for a second horizontal line of the plurality of horizontal lines.Type: ApplicationFiled: October 20, 2017Publication date: April 26, 2018Inventor: Tsuyoshi KUROIWA
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Publication number: 20180054550Abstract: A display driver for a display device including a sync extraction circuit configured to generate a vertical sync source signal in response to a vertical sync period start instruction indicating a start of a vertical sync period, a timing generator configured to generate an internal vertical sync signal in response to the vertical sync source signal; and a drive circuit configured to drive the display panel in synchronization with the internal vertical sync signalType: ApplicationFiled: August 17, 2017Publication date: February 22, 2018Inventor: Tsuyoshi KUROIWA
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Publication number: 20180004321Abstract: Provided is a technique which enables the avoidance of a temporal damage to a panel module, and keeps a voltage load on a display panel circuit node from becoming excessively large even if a constant voltage is applied to the node for a longer time exceeding a display drive term in a non-display drive term, provided that a display frame period is divided to have display and non-display drive terms. In performing display and touch-sensing actions on condition that a display frame period is divided to include display and non-display drive terms, an operation source voltage supplied to a panel module during the non-display term where touch sensing is performed is smaller, in absolute value, than that supplied in the display term, whereby a voltage load applied to an input circuit node of a panel module for a longer time exceeding the display term is kept from being excessively large.Type: ApplicationFiled: April 21, 2017Publication date: January 4, 2018Inventor: Tsuyoshi KUROIWA
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Publication number: 20170315659Abstract: The drive control device includes a display control part and a touch control part. The display control part includes a control circuit operable to control first and second frame modes, and a clock pulse generator operable to produce a display line clock signal in synchronization with a display line switching cycle. The control circuit changes display and non-display drive terms in start timing on an individual display frame period basis in the first frame mode. In the second frame mode, each display frame period includes only one display drive term; the display drive term is not interrupted by a non-display drive term halfway. The second frame mode is arranged so that the cycle of the display line clock signal in synchronization with the display line switching cycle is made longer than that in the first frame mode.Type: ApplicationFiled: March 16, 2017Publication date: November 2, 2017Inventors: Tsuyoshi KUROIWA, Takayuki NOTO, Mitsunori TAKANASHI
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Patent number: 9778725Abstract: The semiconductor device has a touch panel controller, a processor, and a display driver. The display driver has a memory circuit which rewritably stores control data for drive control of a display panel from outside the semiconductor device. The processor controls the touch panel controller based on a command provided from outside the semiconductor device, and accesses control data in the memory circuit for controlling internal parts of the semiconductor device. With the aid of the arrangement like this, the processor is allowed to control a touch panel based on the read control data fit to the control by the display driver, and to control, by writing control data, the display panel fit for a control condition of the touch panel.Type: GrantFiled: November 21, 2013Date of Patent: October 3, 2017Assignee: SYNAPTICS JAPAN GKInventors: Tsuyoshi Kuroiwa, Shigeru Ota
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Patent number: 9568976Abstract: The semiconductor device has a touch panel controller, a processor and a display driver. The semiconductor device is arranged so as to reduce an electric power uselessly consumed while the action of the display driver is stopped or suspended and further, and an electric power uselessly consumed by the touch-detecting action for recovery of the display driver from the state of the action being stopped or suspended. The processor built in the semiconductor device together with the touch panel controller and the display driver returns to its workable state from Sleep state each time a given length of time elapses, and then causes the touch panel to perform a touch-detecting action. When the processor cannot acquire a result of judgment as “being touched”, it returns to Sleep state again, and waits for the given length of time to elapse.Type: GrantFiled: November 21, 2013Date of Patent: February 14, 2017Assignee: Synaptics Japan GKInventors: Akihito Akai, Tsuyoshi Kuroiwa, Tatsuya Ishii
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Patent number: 9442612Abstract: A common touch panel controller is used for performing touch detection by driving both a touch panel superimposed on a display panel of a touch panel display portion for display, and a touch sensor superimposed on a touch key pattern of a touch key input portion for buttons. A control circuit capable of switching detection characteristics of a detection circuit common to the both in accordance with detection from the touch panel display portion and detection from the touch key input portion is adopted in the touch panel controller.Type: GrantFiled: January 4, 2014Date of Patent: September 13, 2016Assignee: Synaptics Display Devices GKInventors: Tsuyoshi Kuroiwa, Tatsuya Ishii
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Patent number: 9354741Abstract: The touch panel controller activates a touch panel having a detection plane superposed on a display plane of a display device, and performs a touch detection. The touch panel controller uses a cycle of 1/n (n is a positive integer) of a display frame cycle on the display plane as the detection frame cycle of the detection plane. The touch panel controller decides an order of driving the detection-scan electrodes in each detection frame cycle according to predetermined phase-delay and phase-advance positions with respect to a display-scan electrode drive position of the display device so as to correspond to an order of the detection-scan electrode array of the touch panel. The touch panel controller makes possible to avoid the coincidence of display-scan and touch-detection positions without thinning touch detections even with the detection frame cycle of a touch sensor shorter than the display frame cycle of a liquid crystal panel.Type: GrantFiled: January 29, 2014Date of Patent: May 31, 2016Assignee: Synaptics Display Devices GKInventors: Yusuke Uchida, Tatsuya Ishii, Tsuyoshi Kuroiwa, Akihito Akai, Hisayoshi Kajiwara, Kazuo Okado
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Publication number: 20140210776Abstract: A common touch panel controller is used for performing touch detection by driving both a touch panel superimposed on a display panel of a touch panel display portion for display, and a touch sensor superimposed on a touch key pattern of a touch key input portion for buttons. A control circuit capable of switching detection characteristics of a detection circuit common to the both in accordance with detection from the touch panel display portion and detection from the touch key input portion is adopted in the touch panel controller.Type: ApplicationFiled: January 4, 2014Publication date: July 31, 2014Applicant: Renesas SP Drivers Inc.Inventors: Tsuyoshi Kuroiwa, Tatsuya Ishii
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Publication number: 20140210750Abstract: The touch panel controller activates a touch panel having a detection plane superposed on a display plane of a display device, and performs a touch detection. The touch panel controller uses a cycle of 1/n (n is a positive integer) of a display frame cycle on the display plane as the detection frame cycle of the detection plane. The touch panel controller decides an order of driving the detection-scan electrodes in each detection frame cycle according to predetermined phase-delay and phase-advance positions with respect to a display-scan electrode drive position of the display device so as to correspond to an order of the detection-scan electrode array of the touch panel. The touch panel controller makes possible to avoid the coincidence of display-scan and touch-detection positions without thinning touch detections even with the detection frame cycle of a touch sensor shorter than the display frame cycle of a liquid crystal panel.Type: ApplicationFiled: January 29, 2014Publication date: July 31, 2014Applicant: Renesas SP Drivers Inc.Inventors: Yusuke Uchida, Tatsuya Ishii, Tsuyoshi Kuroiwa, Akihito Akai, Hisayoshi Kajiwara, Kazuo Okado