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1
US10962621B2
Communication circuit, communication system, and self-diagnosis method of communication circuit
Publication/Patent Number: US10962621B2 Publication Date: 2021-03-30 Application Number: 15/960,522 Filing Date: 2018-04-23 Inventor: Kikuchi, Hidekazu   Assignee: LAPIS Semiconductor Co., Ltd.   IPC: G01R35/00 Abstract: A communication circuit, a communication system, and a self-diagnosis method of the communication circuit, which facilitate specifying a failed part which causes a communication failure when a communication failure occurs in a communication system, are provided. A serial signal for self-diagnosis is supplied to a first conversion unit, a pulse signal for self-diagnosis corresponding to the serial signal for self-diagnosis output from the first conversion unit is input to a second conversion unit instead of a pulse signal received by a pulse signal reception unit, and the serial signal corresponding to the pulse signal for self-diagnosis output from the second conversion unit is transmitted to the outside via a serial signal transmission unit.
2
US2021067168A1
DAC CIRCUIT, SOLID-STATE IMAGING ELEMENT, AND ELECTRONIC EQUIPMENT
Publication/Patent Number: US2021067168A1 Publication Date: 2021-03-04 Application Number: 16/961,565 Filing Date: 2019-01-15 Inventor: Kitano, Shin   Sakakibara, Masaki   Kikuchi, Hidekazu   Osame, Mitsuaki   Assignee: SONY SEMICONDUCTOR SOLUTIONS CORPORATION   IPC: H03M1/56 Abstract: The present technology relates to a DAC circuit, a solid-state imaging element, and electronic equipment that can be achieved with a small-scale circuit configuration. The DAC circuit includes: a ramp DAC that generates a ramp signal that changes in voltage with a constant time gradient; an injection DAC that outputs a predetermined voltage during a reset period for resetting a comparison target voltage to be compared with the ramp signal; and an adding circuit that adds an output of the ramp DAC and an output of the injection DAC and outputs the outputs to a comparison circuit as a comparison reference voltage. The present technology can be applied to, for example, a DAC circuit of a solid-state imaging element, and the like.
3
US11018659B2
Comparator, AD converter, solid-state image pickup device, electronic device, method of controlling comparator, data writing circuit, data reading circuit, and data transferring circuit
Publication/Patent Number: US11018659B2 Publication Date: 2021-05-25 Application Number: 16/668,329 Filing Date: 2019-10-30 Inventor: Kikuchi, Hidekazu   Taura, Tadayuki   Sakakibara, Masaki   Assignee: SONY CORPORATION   IPC: H03M1/50 Abstract: An imaging device for improving the determining speed of a comparator and reducing power consumption. The comparator imaging device includes a differential input circuit that operates with a first power supply voltage, the differential input circuit outputs a signal when an input signal is higher than a reference signal in voltage, and a positive feedback circuit that operates with a second power supply voltage lower than the first power supply voltage. The positive feedback circuit accelerates transition speed when a compared result signal indicating a compared result between the input signal and the reference signal in voltage, is inverted, on the basis of the output signal of the differential input circuit. The imaging device further includes a voltage conversion circuit that converts the output signal of the differential input circuit into a signal corresponding to the second power supply voltage.
4
US10564225B2
Battery monitoring system, signal transmission method, and semiconductor device for monitoring batteries
Publication/Patent Number: US10564225B2 Publication Date: 2020-02-18 Application Number: 16/012,877 Filing Date: 2018-06-20 Inventor: Yamazaki, Masato   Kikuchi, Hidekazu   Assignee: LAPIS Semiconductor Co., Ltd.   IPC: G01R31/36 Abstract: A battery monitoring system includes a plurality of battery monitoring devices connected in series, such that each battery monitoring device is in communication with at least one adjacent battery monitoring device, and each battery monitoring device monitors battery cells. First and second interface devices are located along first and second communication paths including the battery monitoring devices. A controller controls the first and second interface devices to switch transmission modes between transmitting along the first communication path via the first interface device and the battery monitoring devices, transmitting along the second communication path via the second interface device and the battery monitoring devices, and transmitting along a third transmission mode in which a direction of the communication signals outputted from the first interface device and the second interface device to the plurality of battery monitoring devices are reversed.
5
US2020213076A1
DATA RECEPTION DEVICE AND DATA TRANSMISSION/RECEPTION DEVICE
Publication/Patent Number: US2020213076A1 Publication Date: 2020-07-02 Application Number: 16/643,635 Filing Date: 2018-07-20 Inventor: Tanaka, Tomokazu   Kikuchi, Hidekazu   Morohashi, Hideo   Assignee: SONY SEMICONDUCTOR SOLUTIONS CORPORATION   IPC: H04L7/033 Abstract: A data reception device that can improve communication quality when transmitting/receiving serial data is to be provided. There is provided the data reception device including: a signal generation unit that generates, from serial data received, a first signal whose value is inverted at a rising timing of the serial data and a second signal whose value is inverted at a falling timing of the serial data; and a clock recovery unit that performs clock recovery using the first signal and the second signal generated by the signal generation unit.
6
US2020067498A1
COMPARATOR, AD CONVERTER, SOLID-STATE IMAGE PICKUP DEVICE, ELECTRONIC DEVICE, METHOD OF CONTROLLING COMPARATOR, DATA WRITING CIRCUIT, DATA READING CIRCUIT, AND DATA TRANSFERRING CIRCUIT
Publication/Patent Number: US2020067498A1 Publication Date: 2020-02-27 Application Number: 16/668,329 Filing Date: 2019-10-30 Inventor: Kikuchi, Hidekazu   Taura, Tadayuki   Sakakibara, Masaki   Assignee: SONY CORPORATION   IPC: H03K5/24 Abstract: The present disclosure relates to a comparator, an AD converter, a solid-state image pickup device, an electronic device, a method of controlling the comparator, a data writing circuit, a data reading circuit, and a data transferring circuit, capable of improving the determining speed of the comparator and reducing power consumption. The comparator includes a differential input circuit configured to operate with a first power supply voltage, the differential input circuit configured to output a signal when an input signal is higher than a reference signal in voltage; a positive feedback circuit configured to operate with a second power supply voltage lower than the first power supply voltage, the positive feedback circuit being configured to accelerate transition speed when a compared result signal indicating a compared result between the input signal and the reference signal in voltage, is inverted, on the basis of the output signal of the differential input circuit; and a voltage conversion circuit configured to convert the output signal of the differential input circuit into a signal corresponding to the second power supply voltage. The present disclosure can be applied to, for example, a comparator of a solid-state image pickup device.
7
US10320039B2
Semiconductor device, battery monitoring system, and method of monitoring battery
Publication/Patent Number: US10320039B2 Publication Date: 2019-06-11 Application Number: 14/798,654 Filing Date: 2015-07-14 Inventor: Kikuchi, Hidekazu   Assignee: LAPIS SEMICONDUCTOR CO., LTD.   IPC: H02J7/00 Abstract: A semiconductor device includes a voltage generation circuit configured to generate a specific voltage; a first terminal configured to output the specific voltage; a second terminal configured to receive a temperature sensitive voltage; an analog/digital conversion circuit configured to convert the specific voltage and the temperature sensitive voltage to digital values; a storage unit configured to store the specific voltage and the temperature sensitive voltage; and a third terminal configured to transmit the specific voltage and the temperature sensitive voltage to an external semiconductor device.
8
JP2019007837A
BATTERY MONITORING SYSTEM, SIGNAL TRANSMISSION METHOD AND SEMICONDUCTOR DEVICE
Publication/Patent Number: JP2019007837A Publication Date: 2019-01-17 Application Number: 2017123661 Filing Date: 2017-06-23 Inventor: Yamazaki, Masato   Kikuchi, Hidekazu   Assignee: LAPIS SEMICONDUCTOR CO LTD   IPC: G01R31/02 Abstract: To ensure that even when a fault occurs in some of battery monitoring devices, communication with each of battery monitoring devices other than the battery monitoring device that has the fault is secured.SOLUTION: A battery monitoring system of the present invention has its transmission modes switchable to one of first to third transmission modes. The first transmission mode is a transmission mode for transmitting a communication signal using a first communication path. The second transmission mode is a transmission mode for transmitting a communication signal using a second communication path. The third transmission mode is a transmission mode in which a communication signal outputted from a first interface device is inputted from one end of a plurality of battery monitoring devices and turned around by one of the battery monitoring devices and inputted to one of the first and a second interface device, and a communication signal outputted from the second interface device is inputted from the other end of the plurality of battery monitoring devices and turned around by the other one of the battery monitoring devices and inputted to the other of the first and the second interface device.SELECTED DRAWING: Figure 1
9
US10498321B2
Comparator, AD converter, solid-state image pickup device, electronic device, method of controlling comparator, data writing circuit, data reading circuit, and data transferring circuit
Publication/Patent Number: US10498321B2 Publication Date: 2019-12-03 Application Number: 16/058,340 Filing Date: 2018-08-08 Inventor: Kikuchi, Hidekazu   Taura, Tadayuki   Sakakibara, Masaki   Assignee: SONY CORPORATION   IPC: H03M1/50 Abstract: An imaging device for improving the determining speed of the comparator and reducing power consumption. The comparator includes a differential input circuit that operates with a first power supply voltage, the differential input circuit that outputs a signal when an input signal is higher than a reference signal in voltage, a positive feedback circuit that operates with a second power supply voltage lower than the first power supply voltage and accelerates transition speed when a compared result signal indicating a compared result between the input signal and the reference signal in voltage, is inverted, based on the output signal of the differential input circuit, and a voltage conversion circuit that converts the output signal of the differential input circuit into a signal corresponding to the second power supply voltage.
10
WO2019049524A1
DATA RECEPTION DEVICE AND DATA TRANSMISSION/RECEPTION DEVICE
Publication/Patent Number: WO2019049524A1 Publication Date: 2019-03-14 Application Number: 2018027208 Filing Date: 2018-07-20 Inventor: Kikuchi, Hidekazu   Tanaka, Tomokazu   Morohashi, Hideo   Assignee: SONY SEMICONDUCTOR SOLUTIONS CORPORATION   IPC: H04L5/06 Abstract: [Problem] To provide a data reception device by which it is possible to improve communication quality when transmitting/receiving serial data. [Solution] Provided is a data reception device comprising: a signal generation unit that generates, from received serial data, a first signal having a value that inverts when the serial data rises, and a second signal having a value that inverts when the serial data falls; and a clock signal generation unit that generates a clock signal using the first signal and the second signal generated by the signal generation unit.
11
JP2019134230A
DAC CIRCUIT, SOLID-STATE IMAGING ELEMENT, AND ELECTRONIC DEVICE
Publication/Patent Number: JP2019134230A Publication Date: 2019-08-08 Application Number: 2018012704 Filing Date: 2018-01-29 Inventor: Sakakibara, Masaki   Kitano, Shin   Osame, Mitsuaki   Kikuchi, Hidekazu   Assignee: SONY SEMICONDUCTOR SOLUTIONS CORP   IPC: H04N5/3745 Abstract: To provide realization with a small-scale circuit configuration.SOLUTION: A DAC circuit comprises a ramp DAC for generating a ramp signal the voltage of which changes with a given time gradient, an injection DAC for outputting a prescribed voltage in a reset period in which a comparison target voltage to be compared with the ramp signal is reset, and an addition circuit for adding the output of the ramp DAC and the output of the injection DAC together and outputting the sum to a comparison circuit as a comparison reference voltage. The present technique can be applied, for example, to the DAC circuit of a solid-state imaging element, etc.SELECTED DRAWING: Figure 7
12
US10330736B2
Semiconductor device, battery monitoring system, and diagnostic method for semiconductor device
Publication/Patent Number: US10330736B2 Publication Date: 2019-06-25 Application Number: 15/384,413 Filing Date: 2016-12-20 Inventor: Sekiguchi, Masaru   Kikuchi, Hidekazu   Sugimura, Naoaki   Assignee: LAPIS Semiconductor Co., Ltd.   IPC: G01R31/36 Abstract: A semiconductor device for measuring a voltage of a battery cell, including first and second nodes, and first and second battery voltage measurement units. The first node is configured to receive a first voltage, the first voltage being a voltage of a capacitor that accumulates an electric charge based on the voltage of the battery cell. The first battery voltage measurement unit measures the first voltage through a first path. The second node is configured to receive a second voltage based on the voltage of the battery cell, the second node being different from the first node. The second battery voltage measurement unit measures the second voltage through a second path that is different from the first path.
13
US10347960B2
Signal transmission system, connector apparatus, electronic device, and signal transmission method
Publication/Patent Number: US10347960B2 Publication Date: 2019-07-09 Application Number: 15/783,192 Filing Date: 2017-10-13 Inventor: Kikuchi, Hidekazu   Mogi, Takayuki   Akiyama, Yoshiyuki   Kawamura, Hirofumi   Assignee: SONY SEMICONDUCTOR SOLUTIONS CORPORATION   IPC: H01P5/02 Abstract: A signal transmission system including: a first connector apparatus, and a second connector apparatus that is coupled with the first connector apparatus. The first connector apparatus and the second connector apparatus are coupled together to form an electromagnetic field coupling unit, and a transmission object signal is converted into a radio signal, which is then transmitted through the electromagnetic field coupling unit, between the first connector apparatus and the second connector apparatus.
14
EP2222040B1
INTERFACE CIRCUIT
Publication/Patent Number: EP2222040B1 Publication Date: 2019-05-29 Application Number: 08851218.1 Filing Date: 2008-11-13 Inventor: Ichimura, Gen   Kikuchi, Hidekazu   Nakajima, Yasuhisa   Assignee: Sony Corporation   IPC: H04L25/02
15
WO2019146443A1
DAC CIRCUIT, SOLID-STATE IMAGING ELEMENT AND ELECTRONIC DEVICE
Publication/Patent Number: WO2019146443A1 Publication Date: 2019-08-01 Application Number: 2019000874 Filing Date: 2019-01-15 Inventor: Sakakibara, Masaki   Kitano, Shin   Kikuchi, Hidekazu   Osame, Mitsuaki   Assignee: SONY SEMICONDUCTOR SOLUTIONS CORPORATION   IPC: H04N5/3745 Abstract: The present feature pertains to a DAC circuit, a solid-state imaging element and an electronic device that are designed to be realizable by a small-scale circuit configuration. The DAC circuit is provided with a ramp DAC for generating a ramp signal the voltage of which changes with a given time gradient, an injection DAC for outputting a prescribed voltage in a reset period in which a comparison target voltage to be compared with the ramp signal is reset, and an addition circuit for adding the output of the ramp DAC and the output of the injection DAC together and outputting the sum to a comparison circuit as a comparison reference voltage. The present feature can be applied, for example, to the DAC circuit of a solid-state imaging element, etc..
16
US2018306886A1
COMMUNICATION CIRCUIT, COMMUNICATION SYSTEM, AND SELF-DIAGNOSIS METHOD OF COMMUNICATION CIRCUIT
Publication/Patent Number: US2018306886A1 Publication Date: 2018-10-25 Application Number: 15/960,522 Filing Date: 2018-04-23 Inventor: Kikuchi, Hidekazu   Assignee: LAPIS Semiconductor Co., Ltd.   IPC: G01R35/00 Abstract: A communication circuit, a communication system, and a self-diagnosis method of the communication circuit, which facilitate specifying a failed part which causes a communication failure when a communication failure occurs in a communication system, are provided. A serial signal for self-diagnosis is supplied to a first conversion unit, a pulse signal for self-diagnosis corresponding to the serial signal for self-diagnosis output from the first conversion unit is input to a second conversion unit instead of a pulse signal received by a pulse signal reception unit, and the serial signal corresponding to the pulse signal for self-diagnosis output from the second conversion unit is transmitted to the outside via a serial signal transmission unit.
17
JP2018185612A
COMMUNICATION CIRCUIT, COMMUNICATION SYSTEM AND METHOD FOR SELF-DIAGNOSIS OF COMMUNICATION CIRCUIT
Publication/Patent Number: JP2018185612A Publication Date: 2018-11-22 Application Number: 2017086129 Filing Date: 2017-04-25 Inventor: Kikuchi, Hidekazu   Assignee: LAPIS SEMICONDUCTOR CO LTD   IPC: H01M10/42 Abstract: PROBLEM TO BE SOLVED: To facilitate localizing a fault causing a communication failure when the communication failure occurs in a communication system.SOLUTION: A serial signal for self-diagnosis is supplied to a first conversion unit, and a pulse signal for self-diagnosis output from the first conversion unit and corresponding to the serial signal for self-diagnosis is inputted to a second conversion unit instead of a pulse signal received by a pulse signal receiving unit, and a serial signal output from the second conversion unit and corresponding to the pulse signal for self-diagnosis is transmitted to the outside through a serial signal transmitting unit.SELECTED DRAWING: Figure 2
18
US10018680B2
Semiconductor device, battery monitoring system, and method for activating semiconductor device
Publication/Patent Number: US10018680B2 Publication Date: 2018-07-10 Application Number: 14/824,118 Filing Date: 2015-08-12 Inventor: Kikuchi, Hidekazu   Assignee: LAPIS SEMICONDUCTOR CO., LTD.   IPC: H03K19/0185 Abstract: A semiconductor device, a battery monitoring system, and a method for activating the semiconductor device that may reduce current consumption in standby state. An integrated circuit (IC) of the semiconductor device includes an activation circuit that uses a ground of the IC as ground and a power source voltage of the IC as its power source, and a driving circuit that uses the power source voltage as ground and a boosted voltage output from a boosting circuit as its power source. In the IC, only the activation circuit enters an operation state in a standby state, and when recovered from the standby state, causes the activation circuit to make inner circuits of the IC enter the operation state based on an activation signal. When all the inner circuits enter the operation state, the driving circuit outputs the activation signal to the activation circuit of an upper IC.
19
US2018372804A1
BATTERY MONITORING SYSTEM, SIGNAL TRANSMISSION METHOD, AND SEMICONDUCTOR DEVICE FOR MONITORING BATTERIES
Publication/Patent Number: US2018372804A1 Publication Date: 2018-12-27 Application Number: 16/012,877 Filing Date: 2018-06-20 Inventor: Yamazaki, Masato   Kikuchi, Hidekazu   Assignee: LAPIS Semiconductor Co., Ltd.   IPC: G01R31/36 Abstract: A battery monitoring system includes a plurality of battery monitoring devices connected in series, such that each battery monitoring device is in communication with at least one adjacent battery monitoring device, and each battery monitoring device monitors battery cells. First and second interface devices are located along first and second communication paths including the battery monitoring devices. A controller controls the first and second interface devices to switch transmission modes between transmitting along the first communication path via the first interface device and the battery monitoring devices, transmitting along the second communication path via the second interface device and the battery monitoring devices, and transmitting along a third transmission mode in which a direction of the communication signals outputted from the first interface device and the second interface device to the plurality of battery monitoring devices are reversed.
20
US2018351540A1
COMPARATOR, AD CONVERTER, SOLID-STATE IMAGE PICKUP DEVICE, ELECTRONIC DEVICE, METHOD OF CONTROLLING COMPARATOR, DATA WRITING CIRCUIT, DATA READING CIRCUIT, AND DATA TRANSFERRING CIRCUIT
Publication/Patent Number: US2018351540A1 Publication Date: 2018-12-06 Application Number: 16/058,340 Filing Date: 2018-08-08 Inventor: Kikuchi, Hidekazu   Taura, Tadayuki   Sakakibara, Masaki   Assignee: SONY CORPORATION   IPC: H03K5/24 Abstract: The present disclosure relates to a comparator, an AD converter, a solid-state image pickup device, an electronic device, a method of controlling the comparator, a data writing circuit, a data reading circuit, and a data transferring circuit, capable of improving the determining speed of the comparator and reducing power consumption. The comparator includes: a differential input circuit configured to operate with a first power supply voltage, the differential input circuit configured to output a signal when an input signal is higher than a reference signal in voltage; a positive feedback circuit configured to operate with a second power supply voltage lower than the first power supply voltage, the positive feedback circuit being configured to accelerate transition speed when a compared result signal indicating a compared result between the input signal and the reference signal in voltage, is inverted, on the basis of the output signal of the differential input circuit; and a voltage conversion circuit configured to convert the output signal of the differential input circuit into a signal corresponding to the second power supply voltage. The present disclosure can be applied to, for example, a comparator of a solid-state image pickup device.