Patents by Inventor Atsuya Yokoi

Atsuya Yokoi 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: 11094273
    Abstract: The present disclosure relates to a display apparatus including a display panel configured to display an image in a first direction, a sensor disposed in a direction opposite to the first direction with respect to the display panel and comprising a sensor head configured to transmit ultrasonic waves in a second direction or receive the ultrasonic waves in a direction opposite to the second direction, and a guide comprising a first opening into which the sensor head is inserted, a second opening opened in the second direction, a channel connecting the first opening and the second opening, and a guide portion provided inside the channel to guide the ultrasonic waves to change a traveling direction of the ultrasonic waves passing through the channel.
    Type: Grant
    Filed: September 28, 2018
    Date of Patent: August 17, 2021
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Young Kwang Seo, Atsuya Yokoi, Hiromi Tachibana, Eun Seok Choi
  • Publication number: 20200243031
    Abstract: The present disclosure relates to a display apparatus including a display panel configured to display an image in a first direction, a sensor disposed in a direction opposite to the first direction with respect to the display panel and comprising a sensor head configured to transmit ultrasonic waves in a second direction or receive the ultrasonic waves in a direction opposite to the second direction, and a guide comprising a first opening into which the sensor head is inserted, a second opening opened in the second direction, a channel connecting the first opening and the second opening, and a guide portion provided inside the channel to guide the ultrasonic waves to change a traveling direction of the ultrasonic waves passing through the channel.
    Type: Application
    Filed: September 28, 2018
    Publication date: July 30, 2020
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Young Kwang SEO, Atsuya YOKOI, Hiromi TACHIBANA, Eun Seok CHOI
  • Publication number: 20200187795
    Abstract: An electronic device is provided. The electronic device includes an earphone including a first impedance component, a signal generator configured to output a first alternating current (AC) signal, a first circuit including at least one first analog device having an impedance component electrically coupled to the first impedance component, and configured to receive the first AC signal and output a first detection signal including a voltage component corresponding to the first impedance component, and at least one processor configured to generate at least one piece of biometric information, based on the first detection signal, and output the at least one piece of biometric information.
    Type: Application
    Filed: December 13, 2019
    Publication date: June 18, 2020
    Inventors: Atsuya YOKOI, Tadamasa MURAKAMI, Toshihiro KITAJIMA, Edwardo MURAKAMI
  • Patent number: 10225012
    Abstract: In one embodiment, an electronic device includes a storage storing a first table regarding a relationship between data and colors, a controller configured to determine a second table as a substitute in a preset condition for the first table and determine a first color, and a second color corresponding to a target data respectively based on the first table and the second table, and a display for displaying at least one from among the first color and the second color.
    Type: Grant
    Filed: April 27, 2015
    Date of Patent: March 5, 2019
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Noriharu Miyaho, Takamasa Shimada, Noriko Konno, Atsuya Yokoi
  • Patent number: 9998218
    Abstract: An apparatus for receiving visible light data, including an image acquirer configured to acquire an image including a color code, the color code including a data region and a reference region; a detector configured to detect in the acquired image an object having a shape corresponding to the color code, determine a reference candidate region in the object, and determine the object to be the color code by comparing property information of the reference region with the determined reference candidate region; and a demodulator configured to demodulate visible light data from the data region.
    Type: Grant
    Filed: October 19, 2015
    Date of Patent: June 12, 2018
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Atsuya Yokoi, Hiroki Mizuno
  • Publication number: 20180113212
    Abstract: Provided is an electronic apparatus for detecting information about a target object by using an ultrasound wave. The electronic apparatus includes: a transmitter configured to emit an ultrasound wave modulated based on a predetermined code signal; a receiver configured to receive a reflected signal corresponding to the emitted ultrasound wave reflected from a target object; and a controller configured to acquire a reception signal from the received reflected signal and detect information about the target object based on a difference between correlation values corresponding to a plurality of predetermined periods of the reception signal and the predetermined code signal.
    Type: Application
    Filed: October 20, 2017
    Publication date: April 26, 2018
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Hiromi TACHIBANA, Atsuya YOKOI
  • Patent number: 9749045
    Abstract: Disclosed is a visible ray communication system including a transmission apparatus and a reception apparatus, wherein the transmission apparatus includes: a plurality of light emitting devices; an S/P converter for serial-to-parallel converting transmission data, thereby generating N data streams; a modulator for modulating the generated N data streams for respective carriers with a predetermined number of dimensions, thereby generating N modulated signals; a carrier signal multiplier for multiplying the generated N modulated signals by orthogonal N carrier signals, respectively, thereby generating N transmission signals; and a light emitting control unit for illuminating the plurality of light emitting devices according to the generated N transmission signals.
    Type: Grant
    Filed: November 24, 2009
    Date of Patent: August 29, 2017
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Atsuya Yokoi
  • Publication number: 20170063458
    Abstract: In one embodiment, an electronic device includes a storage storing a first table regarding a relationship between data and colors, a controller configured to determine a second table as a substitute in a preset condition for the first table and determine a first color, and a second color corresponding to a target data respectively based on the first table and the second table, and a display for displaying at least one from among the first color and the second color.
    Type: Application
    Filed: April 27, 2015
    Publication date: March 2, 2017
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Noriharu MIYAHO, Takamasa SHIMADA, Noriko KONNO, Atsuya YOKOI
  • Publication number: 20160112125
    Abstract: An apparatus for receiving visible light data, including an image acquirer configured to acquire an image including a color code, the color code including a data region and a reference region; a detector configured to detect in the acquired image an object having a shape corresponding to the color code, determine a reference candidate region in the object, and determine the object to be the color code by comparing property information of the reference region with the determined reference candidate region; and a demodulator configured to demodulate visible light data from the data region.
    Type: Application
    Filed: October 19, 2015
    Publication date: April 21, 2016
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Atsuya YOKOI, Hiroki MIZUNO
  • Patent number: 9276676
    Abstract: A visible ray communication system and method that improve transmission rate and remove an influence of inter-color interference to improve the communication quality. A transmission apparatus included in the visible ray communication system allocates each carrier signal component of an OFDM signal, which is modulated into transmission information, to a plurality of LEDs of different colors. The information is added to a combination of a carrier frequency and an LED wavelength, when a carrier signal is allocated to an, in addition to each carrier signal being modulated into the information.
    Type: Grant
    Filed: November 24, 2009
    Date of Patent: March 1, 2016
    Assignee: Samsung Electronics Co., Ltd
    Inventor: Atsuya Yokoi
  • Patent number: 9246585
    Abstract: A transmitter in a visible light communication system is provided, in which a plurality of light sources emit light in different colors, a data converter converts data to predetermined chromaticity coordinates, a data transmitter emits light having a chromaticity corresponding to the chromaticity coordinates by controlling light intensity of each of the light sources, and a pre-light emitter emits light having chromaticities corresponding to all chromaticity coordinates by controlling the light intensity of each of the light sources, before the light intensity control of the data transmitter.
    Type: Grant
    Filed: November 26, 2010
    Date of Patent: January 26, 2016
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Atsuya Yokoi
  • Patent number: 9008520
    Abstract: Disclosed is a visible light communication system including a transmission device, including multiple light emitting units emitting light of different colors and mapping transmission data to a chromaticity point, calculating luminescence of each of the light emitting units, generating a preamble signal for channel matrix estimation, and emitting light based on the preamble signal and calculated luminescence amount. A reception device of the visible light communication system includes multiple light receiving units and estimates a channel matrix based on a corresponding optical signal when an optical signal corresponding to the preamble signal is received in each light receiving unit, compensates the optical signal corresponding to the chromaticity point for a propagation path based on the estimated channel matrix, detects a chromaticity point on the chromaticity coordinates based on a signal after the propagation path compensation, and demodulates the transmission data.
    Type: Grant
    Filed: April 2, 2013
    Date of Patent: April 14, 2015
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Atsuya Yokoi
  • Patent number: 8842996
    Abstract: Disclosed is an apparatus and a method for transmitting data by using visible light. The transmission apparatus includes: a Serial-to-Parallel (S/P) converter for performing a Serial-to-Parallel conversion on transmission data, and generating multiple parallel data; a modulation means for modulating the multiple parallel data generated by the S/P converter, and generating multiple modulation signals; an Inverse Fast Fourier Transform (IFFT) means for performing an IFFT on the multiple modulation signals so that the multiple modulation signals are orthogonal to one another, and generating an IFFT signal; and a light-emitting means for causing a light source to emit light based on the IFFT signal generated by the IFFT means.
    Type: Grant
    Filed: February 17, 2011
    Date of Patent: September 23, 2014
    Assignee: Samsung Electronics Co., Ltd
    Inventor: Atsuya Yokoi
  • Publication number: 20140055420
    Abstract: A display identification system includes: a plurality of display devices, each of the display devices having a light source; and an identification device configured to identify the plurality of display devices. Each of the plurality of display devices includes a configured to perform luminance modulation to luminance-modulate an output light of the corresponding light source in a predetermined range, by combining a specific signal, which is different for each of the display devices, with a driving signal of the corresponding light source. The identification device includes: a receiver configured to receive an optical signal obtained by performing the luminance modulation; and an identification device configured to identify the plurality of display devices based on the optical signal received by the receiver.
    Type: Application
    Filed: August 23, 2013
    Publication date: February 27, 2014
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Atsuya YOKOI, Sang-on CHOI
  • Patent number: 8433203
    Abstract: Disclosed is a visible light communication system including a transmission device, including multiple light emitting units emitting light of different colors and mapping transmission data to a chromaticity point, calculating luminescence of each of the light emitting units, generating a preamble signal for channel matrix estimation, and emitting light based on the preamble signal and calculated luminescence amount. A reception device of the visible light communication system includes multiple light receiving units and estimates a channel matrix based on a corresponding optical signal when an optical signal corresponding to the preamble signal is received in each light receiving unit, compensates the optical signal corresponding to the chromaticity point for a propagation path based on the estimated channel matrix, detects a chromaticity point on the chromaticity coordinates based on a signal after the propagation path compensation, and demodulates the transmission data.
    Type: Grant
    Filed: October 16, 2009
    Date of Patent: April 30, 2013
    Assignee: Samsung Electronics Co., Ltd
    Inventor: Atsuya Yokoi
  • Publication number: 20120275796
    Abstract: A transmitter in a visible light communication system is provided, in which a plurality of light sources emit light in different colors, a data converter converts data to predetermined chromaticity coordinates, a data transmitter emits light having a chromaticity corresponding to the chromaticity coordinates by controlling light intensity of each of the light sources, and a pre-light emitter emits light having chromaticities corresponding to all chromaticity coordinates by controlling the light intensity of each of the light sources, before the light intensity control of the data transmitter.
    Type: Application
    Filed: November 26, 2010
    Publication date: November 1, 2012
    Applicant: SAMSUNG ELECTRONICS CO. LTD.
    Inventor: Atsuya Yokoi
  • Publication number: 20120257898
    Abstract: Disclosed is an apparatus and a method for transmitting data by using visible light. The transmission apparatus includes: a Serial-to-Parallel (S/P) converter for performing a Serial-to-Parallel conversion on transmission data, and generating multiple parallel data; a modulation means for modulating the multiple parallel data generated by the S/P converter, and generating multiple modulation signals; an Inverse Fast Fourier Transform (IFFT) means for performing an IFFT on the multiple modulation signals so that the multiple modulation signals are orthogonal to one another, and generating an IFFT signal; and a light-emitting means for causing a light source to emit light based on the IFFT signal generated by the IFFT means.
    Type: Application
    Filed: February 17, 2011
    Publication date: October 11, 2012
    Inventor: Atsuya Yokoi
  • Patent number: 8102830
    Abstract: A multi-input multi-output (MIMO) radio communication apparatus and method are provided. The MIMO apparatus includes a plurality of reception antennas each having a plurality of antenna patterns; a channel matrix estimation unit for estimating a channel matrix between a plurality of transmission antennas and the plurality of reception antennas; a channel capacity calculation unit for calculating a channel capacity corresponding to a combination of antenna patterns of the plurality of reception antennas by using the estimated channel matrix; and an antenna pattern control unit for changing the antenna patterns of the plurality of reception antennas to maximize the channel capacity. According to the MIMO radio communication apparatus and method, direction can be controlled adaptively to a propagation environment.
    Type: Grant
    Filed: December 18, 2006
    Date of Patent: January 24, 2012
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Atsuya Yokoi, Tsutomu Mitsui
  • Publication number: 20110229147
    Abstract: A visible ray communication system and method that improve transmission rate and remove an influence of inter-color interference to improve the communication quality. A transmission apparatus included in the visible ray communication system allocates each carrier signal component of an OFDM signal, which is modulated into transmission information, to a plurality of LEDs of different colors. The information is added to a combination of a carrier frequency and an LED wavelength, when a carrier signal is allocated to an, in addition to each carrier signal being modulated into the information.
    Type: Application
    Filed: November 24, 2009
    Publication date: September 22, 2011
    Inventor: Atsuya Yokoi
  • Publication number: 20110229130
    Abstract: Disclosed is a visible ray communication system including a transmission apparatus and a reception apparatus, wherein the transmission apparatus includes: a plurality of light emitting devices; an S/P converter for serial-to-parallel converting transmission data, thereby generating N data streams; a modulator for modulating the generated N data streams for respective carriers with a predetermined number of dimensions, thereby generating N modulated signals; a carrier signal multiplier for multiplying the generated N modulated signals by orthogonal N carrier signals, respectively, thereby generating N transmission signals; and a light emitting control unit for illuminating the plurality of light emitting devices according to the generated N transmission signals.
    Type: Application
    Filed: November 24, 2009
    Publication date: September 22, 2011
    Inventor: Atsuya Yokoi