Patents by Inventor Kazuhiro Tomita

Kazuhiro Tomita 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).

  • Patent number: 11362667
    Abstract: A device includes a master delay-lock loop (DLL) having a phase frequency detector connected in series with a charge pump that is to generate a control voltage. A slave DLL is coupled to the master DLL and has a delay line including a buffer to receive a slave clock and a series of delay cells coupled between the buffer and an output terminal that is to output a delay clock, the series of delay cells variably controlled by the control voltage. The master DLL and the slave DLL are powered by a power supply that experiences undershoot or overshoot in response to a load transient. A dummy load is coupled between the delay line of the slave DLL and an output of the power supply, the dummy load including an exclusive OR gate that receives, as inputs, a first output of the buffer and the delay clock.
    Type: Grant
    Filed: September 24, 2021
    Date of Patent: June 14, 2022
    Assignee: Cypress Semiconductor Corporation
    Inventors: Kazuyoshi Futamura, Kazuhiro Tomita, Koji Okada, Hiroyuki Matsunami
  • Patent number: 11290108
    Abstract: A bus interface bus is described. A first logical state is conveyed over the bus by a higher voltage level and a second logical state is conveyed by a lower voltage level. An output stage of the interface includes a power transistor configured to drive the lower voltage level onto the bus to convey the second logical state, and a protective device between the power transistor and the bus. The protective device couples the power transistor to the bus when turned on and limits negative voltage excursions at the power transistor when turned off. A control circuit of the interface is configured to turn on the protective device when the bus voltage is above the lower voltage level and to turn off the protective device when the bus voltage is at or below the lower voltage level.
    Type: Grant
    Filed: January 18, 2021
    Date of Patent: March 29, 2022
    Assignee: Cypress Semiconductor Corporation
    Inventors: Toru Miyamae, Kazuhiro Tomita, Koji Okada
  • Publication number: 20210357353
    Abstract: An on-vehicle system comprises a Clock Extension Peripheral Interface (CXPI) bus and a device coupled to the CXPI bus as a slave node. The device comprises a transceiver configured to: generate a first signal by delaying an inverted signal of a transmission data signal: generate a second signal based on the transmission data signal, where the second signal has a low slew rate: selectively output the first signal or the second signal as a third signal, in response to a selector signal: and generate a clock signal in response to the third signal, where the clock signal is at a high level when the third signal is at a low level, and where the clock signal is at the low level when the third signal is at the high level.
    Type: Application
    Filed: June 14, 2021
    Publication date: November 18, 2021
    Applicant: Cypress Semiconductor Corporation
    Inventors: Akihiro Suzuki, Masami Nakashima, Masuo Inui, Koji Okada, Takeo Zaitsu, Takashi Shimizu, Shinichi Yamamoto, Kazuhiro Tomita, Susumu Kuroda
  • Publication number: 20210359685
    Abstract: A bus interface bus is described. A first logical state is conveyed over the bus by a higher voltage level and a second logical state is conveyed by a lower voltage level. An output stage of the interface includes a power transistor configured to drive the lower voltage level onto the bus to convey the second logical state, and a protective device between the power transistor and the bus. The protective device couples the power transistor to the bus when turned on and limits negative voltage excursions at the power transistor when turned off. A control circuit of the interface is configured to turn on the protective device when the bus voltage is above the lower voltage level and to turn off the protective device when the bus voltage is at or below the lower voltage level.
    Type: Application
    Filed: January 18, 2021
    Publication date: November 18, 2021
    Applicant: Cypress Semiconductor Corporation
    Inventors: Toru Miyamae, Kazuhiro Tomita, Koji Okada
  • Patent number: 11036671
    Abstract: An on-vehicle system comprises a Clock Extension Peripheral Interface (CXPI) bus and a device coupled to the CXPI bus as a slave node. The device comprises a transceiver configured to: generate a first signal by delaying an inverted signal of a transmission data signal; generate a second signal based on the transmission data signal, where the second signal has a low slew rate; selectively output the first signal or the second signal as a third signal, in response to a selector signal; and generate a clock signal in response to the third signal, where the clock signal is at a high level when the third signal is at a low level, and where the clock signal is at the low level when the third signal is at the high level.
    Type: Grant
    Filed: July 9, 2019
    Date of Patent: June 15, 2021
    Assignee: Cypress Semiconductor Corporation
    Inventors: Akihiro Suzuki, Masami Nakashima, Masuo Inui, Koji Okada, Takeo Zaitsu, Takashi Shimizu, Shinichi Yamamoto, Kazuhiro Tomita, Susumu Kuroda
  • Patent number: 10651952
    Abstract: In an example embodiment, a communication system provides a clock extension peripheral interface (CXPI) communication bus that is coupled to a master node and a plurality of slave nodes. The master node is configured to transmit a reference clock signal on the CXPI communication bus. Each slave node of the plurality of slave nodes is configured to receive the reference clock signal from the CXPI communication bus and to transmit and receive data to and from the CXPI communication bus based on the reference clock signal.
    Type: Grant
    Filed: October 16, 2019
    Date of Patent: May 12, 2020
    Assignee: Cypress Semiconductor Corporation
    Inventors: Kazuhiro Tomita, Masuo Inui
  • Publication number: 20200092015
    Abstract: In an example embodiment, a communication system provides a clock extension peripheral interface (CXPI) communication bus that is coupled to a master node and a plurality of slave nodes. The master node is configured to transmit a reference clock signal on the CXPI communication bus. Each slave node of the plurality of slave nodes is configured to receive the reference clock signal from the CXPI communication bus and to transmit and receive data to and from the CXPI communication bus based on the reference clock signal.
    Type: Application
    Filed: October 16, 2019
    Publication date: March 19, 2020
    Applicant: Cypress Semiconductor Corporation
    Inventors: Kazuhiro Tomita, Masuo Inui
  • Patent number: 10553063
    Abstract: A coin validation device that is implemented in a coin handling machine which stores therein a deposited coin on a denomination-by-denomination basis and which pays out stored coin in response to a disbursement instruction, the coin validation device, includes: a carrier that carries the deposited coin in a horizontally-fallen state in one direction; and a discriminator that identifies authenticity and denominations of the coin carried in the one direction by the carrier. Further, the carrier carries a coin, which is discriminated as a counterfeit coin by the discriminator, in another direction opposite to the one direction.
    Type: Grant
    Filed: November 1, 2017
    Date of Patent: February 4, 2020
    Assignee: FUJI ELECTRIC CO., LTD.
    Inventors: Yoshito Shibata, Kazuhiro Tomita, Takeshi Oiwa, Takuya Yamane, Masashi Nagata, Yoshiyuki Fukushima, Takao Okuhara, Yoshihiro Taniguchi, Masao Nakayama, Shojiro Onzuka, Takuya Fukuura, Shunsuke Kowase, Tsuyoshi Horiguchi
  • Publication number: 20190391953
    Abstract: An on-vehicle system comprises a Clock Extension Peripheral Interface (CXPI) bus and a device coupled to the CXPI bus as a slave node. The device comprises a transceiver configured to: generate a first signal by delaying an inverted signal of a transmission data signal; generate a second signal based on the transmission data signal, where the second signal has a low slew rate; selectively output the first signal or the second signal as a third signal, in response to a selector signal; and generate a clock signal in response to the third signal, where the clock signal is at a high level when the third signal is at a low level, and where the clock signal is at the low level when the third signal is at the high level.
    Type: Application
    Filed: July 9, 2019
    Publication date: December 26, 2019
    Applicant: Cypress Semiconductor Corporation
    Inventors: Akihiro Suzuki, Masami Nakashima, Masuo Inui, Koji Okada, Takeo Zaitsu, Takashi Shimizu, Shinichi Yamamoto, Kazuhiro Tomita, Susumu Kuroda
  • Patent number: 10484103
    Abstract: An example embodiment provides a transceiver for communication includes a timing determiner that detects a fall from high level to low level of a bus signal generated by pulse width modulation of a clock signal and input from a communication bus; a transmission data signal delay adjuster that determines a second timing having a predetermined time difference from a first timing, the bus signal rising from the low level to the high level at the first timing; an encoder that extends a low level of the bus signal by changing a data signal to be output to the communication bus from high level to low level; and a timing adjustment circuit that changes the data signal to the low level at the second timing.
    Type: Grant
    Filed: April 23, 2019
    Date of Patent: November 19, 2019
    Assignee: Cypress Semiconductor Corporation
    Inventors: Kazuhiro Tomita, Masuo Inui
  • Publication number: 20190327005
    Abstract: An example embodiment provides a transceiver for communication includes a timing determiner that detects a fall from high level to low level of a bus signal generated by pulse width modulation of a clock signal and input from a communication bus; a transmission data signal delay adjuster that determines a second timing having a predetermined time difference from a first timing, the bus signal rising from the low level to the high level at the first timing; an encoder that extends a low level of the bus signal by changing a data signal to be output to the communication bus from high level to low level; and a timing adjustment circuit that changes the data signal to the low level at the second timing.
    Type: Application
    Filed: April 23, 2019
    Publication date: October 24, 2019
    Applicant: Cypress Semiconductor Corporation
    Inventors: Kazuhiro Tomita, Masuo Inui
  • Publication number: 20190318564
    Abstract: A coin validation apparatus includes: a conveyor conveying a coin; and a discriminator discriminating authenticity and denomination of the coin, the conveyor including: conveyor pulleys, conveyor belts each endlessly stretched between the conveyor pulleys, conveying members, each having left and right end portions attached to outer surfaces of the conveyor belts, conveying the coin rearwards in a manner laid flat and convey a coin, which has been discriminated by the discriminator as a counterfeit coin, frontwards in a manner laid flat; and guide members, provided on sides of the conveyor belts, preventing the conveying members from being separated from the conveyor belts.
    Type: Application
    Filed: June 26, 2019
    Publication date: October 17, 2019
    Inventors: Yoshito SHIBATA, Takeshi OOIWA, Masashi NAGATA, Toshikazu NAKANISHI, Kazuhiro TOMITA
  • Patent number: 10394749
    Abstract: An on-vehicle system comprises a Clock Extension Peripheral Interface (CXPI) bus and a device coupled to the CXPI bus. The device comprises a transceiver configured to: detect a baud rate clock signal and a phase difference between the baud rate clock signal and an input data signal that was generated asynchronously from the baud rate clock signal; obtain a timing from an edge of the baud rate clock signal based the phase difference; capture a value of the input data signal at the timing; and transmit the captured value as an output data signal over the CXPI bus.
    Type: Grant
    Filed: March 30, 2018
    Date of Patent: August 27, 2019
    Assignee: Cypress Semiconductor Corporation
    Inventors: Akihiro Suzuki, Masami Nakashima, Masuo Inui, Koji Okada, Takeo Zaitsu, Takashi Shimizu, Shinichi Yamamoto, Kazuhiro Tomita, Susumu Kuroda
  • Patent number: 10361793
    Abstract: An example embodiment provides a transceiver for communication includes a timing determiner that detects a fall from high level to low level of a bus signal generated by pulse width modulation of a clock signal and input from a communication bus; a transmission data signal delay adjuster that determines a second timing having a predetermined time difference from a first timing, the bus signal rising from the low level to the high level at the first timing; an encoder that extends a low level of the bus signal by changing a data signal to be output to the communication bus from high level to low level; and a timing adjustment circuit that changes the data signal to the low level at the second timing.
    Type: Grant
    Filed: July 25, 2018
    Date of Patent: July 23, 2019
    Assignee: Cypress Semiconductor Corporation
    Inventors: Kazuhiro Tomita, Masuo Inui
  • Publication number: 20190097738
    Abstract: An example embodiment provides a transceiver for communication includes a timing determiner that detects a fall from high level to low level of a bus signal generated by pulse width modulation of a clock signal and input from a communication bus; a transmission data signal delay adjuster that determines a second timing having a predetermined time difference from a first timing, the bus signal rising from the low level to the high level at the first timing; an encoder that extends a low level of the bus signal by changing a data signal to be output to the communication bus from high level to low level; and a timing adjustment circuit that changes the data signal to the low level at the second timing.
    Type: Application
    Filed: July 25, 2018
    Publication date: March 28, 2019
    Applicant: Cypress Semiconductor Corporation
    Inventors: Kazuhiro Tomita, Masuo Inui
  • Publication number: 20180276179
    Abstract: An on-vehicle system comprises a Clock Extension Peripheral Interface (CXPI) bus and a device coupled to the CXPI bus. The device comprises a transceiver configured to: detect a baud rate clock signal and a phase difference between the baud rate clock signal and an input data signal that was generated asynchronously from the baud rate clock signal; obtain a timing from an edge of the baud rate clock signal based the phase difference; capture a value of the input data signal at the timing; and transmit the captured value as an output data signal over the CXPI bus.
    Type: Application
    Filed: March 30, 2018
    Publication date: September 27, 2018
    Applicant: Cypress Semiconductor Corporation
    Inventors: Akihiro Suzuki, Masami Nakashima, Masuo Inui, Koji Okada, Takeo Zaitsu, Takashi Shimizu, Shinichi Yamamoto, Kazuhiro Tomita, Susumu Kuroda
  • Patent number: 10068404
    Abstract: A coin conveying device for a coin processing apparatus configured to store an input coin according to denomination, and dispense a coin stored therein in accordance with a payout instruction is provided. The coin conveying device includes: a rail portion configured to form a conveyance path to convey a coin; a conveying portion including holders connected endlessly, each holder being configured to hold one coin, the conveying portion being configured to convey the input coin from below to above by displacing the conveying portion in one direction along the rail portion; and a controller configured to, when the input coin is put in the conveying portion, displace the conveying portion in a reverse direction that is opposite to the one direction for a predetermined time, and displace the conveying portion in the one direction after the predetermined time has elapsed.
    Type: Grant
    Filed: October 13, 2017
    Date of Patent: September 4, 2018
    Assignee: FUJI ELECTRIC CO., LTD.
    Inventors: Yoshito Shibata, Takuya Fukuura, Masao Nakayama, Shimoto Ichihara, Kazuhiro Tomita, Masashi Nagata
  • Patent number: 10063325
    Abstract: An example embodiment provides a transceiver for communication includes a timing determiner that detects a fall from high level to low level of a bus signal generated by pulse width modulation of a clock signal and input from a communication bus; a transmission data signal delay adjuster that determines a second timing having a predetermined time difference from a first timing, the bus signal rising from the low level to the high level at the first timing; an encoder that extends a low level of the bus signal by changing a data signal to be output to the communication bus from high level to low level; and a timing adjustment circuit that changes the data signal to the low level at the second timing.
    Type: Grant
    Filed: March 3, 2017
    Date of Patent: August 28, 2018
    Assignee: Cypress Semiconductor Corporation
    Inventors: Kazuhiro Tomita, Masuo Inui
  • Patent number: 10055921
    Abstract: A coin processing apparatus houses received coins for each denomination of the coins and dispenses the housed coins in accordance with a coin output instruction. The coin processing apparatus includes: a conveyance unit that conveys the coins that are received and stored in an input section upwards one by one along a predetermined conveyance path, allows authenticity and a denomination of each coin to be checked by a checking section while the coin is conveyed, sorts the coins checked to be true coins by denomination, and dispenses the coin checked to be a false coin; and a coin output suspending unit that receives the coin dispensed from the conveyance unit, outputs the received coin from a dispensing outlet when a coin output command is given, and feeds the received coin to the input section when a feeding command is given.
    Type: Grant
    Filed: October 20, 2016
    Date of Patent: August 21, 2018
    Assignee: FUJI ELECTRIC CO., LTD.
    Inventors: Yoshito Shibata, Kazuhiro Tomita, Takao Okuhara, Takuya Fukuura, Katsuya Nakajima, Norio Nakajima
  • Publication number: 20180151014
    Abstract: A coin conveying device for a coin processing apparatus configured to store an input coin according to denomination, and dispense a coin stored therein in accordance with a payout instruction is provided. The coin conveying device includes: a rail portion configured to form a conveyance path to convey a coin; a conveying portion including holders connected endlessly, each holder being configured to hold one coin, the conveying portion being configured to convey the input coin from below to above by displacing the conveying portion in one direction along the rail portion; and a controller configured to, when the input coin is put in the conveying portion, displace the conveying portion in a reverse direction that is opposite to the one direction for a predetermined time, and displace the conveying portion in the one direction after the predetermined time has elapsed.
    Type: Application
    Filed: October 13, 2017
    Publication date: May 31, 2018
    Inventors: Yoshito SHIBATA, Takuya FUKUURA, Masao NAKAYAMA, Shimoto ICHIHARA, Kazuhiro TOMITA, Masashi NAGATA