Patents by Inventor Kazuki Akutagawa

Kazuki Akutagawa 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).

  • Publication number: 20220276341
    Abstract: The present disclosure relates to a measurement device, a measurement method, and a program that enable measurement of a distance with high accuracy in a shorter time. A signal for giving an instruction on emission timing to emit a pulse of laser light is generated repeatedly for each predetermined processing cycle, and a count code indicating timing at which a pulse of reflected light that is the laser light reflected by a distance measurement target and returned is received is continuously counted at the time of switching a processing cycle. Then, an instruction on an emission delay value indicating a time for delaying the emission timing from the start of the processing cycle is given to be different for each processing cycle. The present disclosure can be applied to a measurement device that measures a distance.
    Type: Application
    Filed: July 2, 2020
    Publication date: September 1, 2022
    Inventors: KAZUKI AKUTAGAWA, YASUNORI TSUKUDA, HIROYUKI HIRANO, NOBORU SAKIMURA, TATSUO KUROIWA
  • Publication number: 20220236414
    Abstract: The present disclosure relates to a measurement device, a measurement method, and a program that enable measurement in a shorter time. A signal for giving an instruction on emission timing to emit a pulse of laser light is generated in order to output the laser light having the number of pulse emissions of two or more times within a distance measurement range time of one time by setting, as the distance measurement range time, a width of a flight time in which light reciprocates between the measurement device and a distance measurement range representing a fixed distance width including a distance to be measured.
    Type: Application
    Filed: July 2, 2020
    Publication date: July 28, 2022
    Inventors: Hiroyuki Hirano, Kazuki Akutagawa, Tatsuo Kuroiwa, Yasunori Tsukuda, Noboru Sakimura
  • Patent number: 11342892
    Abstract: The present technology relates to an amplifier and a signal processing circuit that can reduce deterioration of signal quality. A voltage-to-time converter (VTC) integrates error information included in an output pulse width modulation (PWM) signal that is a PWM signal to be output to an outside of a device, so as to convert the error information into error time information. A delay unit generates a plurality of delayed signals using an input PWM signal that is a PWM signal input from the outside of the device. A signal selection unit selects a delayed signal according to the error time information from the plurality of delayed signals and outputs the output PWM signal. The present disclosure can be applied to, for example, an audio player.
    Type: Grant
    Filed: December 13, 2018
    Date of Patent: May 24, 2022
    Assignee: SONY SEMICONDUCTOR SOLUTIONS CORPORATION
    Inventor: Kazuki Akutagawa
  • Publication number: 20210091729
    Abstract: The present technology relates to an amplifier and a signal processing circuit that can reduce deterioration of signal quality. A voltage-to-time converter (VTC) integrates error information included in an output pulse width modulation (PWM) signal that is a PWM signal to be output to an outside of a device, so as to convert the error information into error time information. A delay unit generates a plurality of delayed signals using an input PWM signal that is a PWM signal input from the outside of the device. A signal selection unit selects a delayed signal according to the error time information from the plurality of delayed signals and outputs the output PWM signal. The present disclosure can be applied to, for example, an audio player.
    Type: Application
    Filed: December 13, 2018
    Publication date: March 25, 2021
    Inventor: KAZUKI AKUTAGAWA
  • Patent number: 9484932
    Abstract: A signal generation circuit includes a phase difference detector configured to detect a phase difference between a certain oscillation signal of a plurality of oscillation signals and a predetermined reference signal; an oscillator to which a plurality of delay elements are connected annularly, the oscillator being configured to generate the plurality of oscillation signals depending on the detected phase difference; a low-speed signal generation circuit configured to generate a low-speed signal having a lower frequency than the oscillation signal; a detection circuit configured to detect a difference between a predetermined reference timing and a timing at which the low-speed signal has changed; a selection unit configured to select the oscillation signal so that the phase difference with respect to the reference signal is close to the detected difference; and an output unit configured to output the generated low-speed signal in synchronization with the selected oscillation signal.
    Type: Grant
    Filed: February 2, 2015
    Date of Patent: November 1, 2016
    Assignee: Sony Semiconductor Solutions Corporation
    Inventors: Kazuki Akutagawa, Yasunori Tsukuda, Eiichi Nakamoto, Akito Sekiya
  • Publication number: 20150229313
    Abstract: A signal generation circuit includes a phase difference detector configured to detect a phase difference between a certain oscillation signal of a plurality of oscillation signals and a predetermined reference signal; an oscillator to which a plurality of delay elements are connected annularly, the oscillator being configured to generate the plurality of oscillation signals depending on the detected phase difference; a low-speed signal generation circuit configured to generate a low-speed signal having a lower frequency than the oscillation signal; a detection circuit configured to detect a difference between a predetermined reference timing and a timing at which the low-speed signal has changed; a selection unit configured to select the oscillation signal so that the phase difference with respect to the reference signal is close to the detected difference; and an output unit configured to output the generated low-speed signal in synchronization with the selected oscillation signal.
    Type: Application
    Filed: February 2, 2015
    Publication date: August 13, 2015
    Inventors: Kazuki Akutagawa, Yasunori Tsukuda, Eiichi Nakamoto, Akito Sekiya