Patents by Inventor Dai MIYAUCHI

Dai MIYAUCHI 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: 10897615
    Abstract: An image encoding apparatus includes a plane conversion unit which generates, from image data of one frame of the moving image data, a plurality of planes each formed from a single component, a frequency conversion unit which generates a plurality of subbands for each plane by performing frequency conversion for each plane, a quantization unit which quantizes coefficients in each subband using a quantization parameter, an encoder which encodes the quantized coefficient data, and a control unit which updates the quantization parameter so that a code amount of the encoded data becomes equal to a target code amount set for each plane. The control unit updates the quantization parameter by accumulating a difference between the target code amount set for each plane and a generated code amount of each plane, and distributing the accumulated differences to the plurality of planes.
    Type: Grant
    Filed: May 24, 2017
    Date of Patent: January 19, 2021
    Assignee: Canon Kabushiki Kaisha
    Inventor: Dai Miyauchi
  • Publication number: 20200177795
    Abstract: An electronic apparatus including an imaging unit, an operation unit, an output unit, and a control unit, wherein the control unit outputs a sound relating to a first warning using the output unit, in a case where a condition for issuing the first warning is satisfied, wherein the control unit stops outputting the sound relating to the first warning, in a case where an instruction is received by the operation unit, wherein the control unit doesn't output the sound relating to the first warning even when the condition for issuing the first warning is satisfied, in a case where the output of the sound relating to the first warning is stopped, and wherein the control unit outputs a sound relating to a second warning, when a condition for issuing the second warning is satisfied, in a case where the output of the sound relating to the first warning is stopped.
    Type: Application
    Filed: November 27, 2019
    Publication date: June 4, 2020
    Inventors: Yu Narita, Yoshinori Hayashi, Koichi Sasaki, Dai Miyauchi, Tomotaka Uekusa, Hitoshi Nishitani
  • Patent number: 10602145
    Abstract: An image encoding apparatus of the present invention comprises a frequency converting unit which executes frequency conversion on the data of a frame in moving image data, and generates coefficient data of a plurality of subbands, an encoding unit which quantizes the coefficient data acquired by the frequency converting unit in accordance with a quantization parameter, and encodes the quantized coefficient data, and a code amount controlling unit which controls the encoding unit such that a code amount generated by the encoding unit achieves a target code amount are provided. Here, the code amount controlling unit determines a subband target code amount of each of the plurality of subbands by distributing the target code amount to the plurality of subbands based on a ratio determined according to an indicator indicating a difficulty calculated for each of the plurality of subbands.
    Type: Grant
    Filed: June 2, 2017
    Date of Patent: March 24, 2020
    Assignee: Canon Kabushiki Kaisha
    Inventor: Dai Miyauchi
  • Publication number: 20190253716
    Abstract: The invention generates encoded data in which image quality degradation of regions of the frame of interest that have not been encoded is suppressed. For this, an apparatus comprises a quantizing unit which quantizes image data of a frame in accordance with a quantization parameter, every predetermined block set in advance, an encoding unit which encodes quantized data, a quantization control unit which controls the quantization parameter such that a code amount approaches a target code amount, and a scene change detecting unit which detects a scene change. The quantization control unit has at least two control methods, applies a first quantization control method when starting encoding of a frame, and, in a case where the scene change detecting unit detects a scene change, switches to a second quantization control method from the first quantization control method.
    Type: Application
    Filed: February 11, 2019
    Publication date: August 15, 2019
    Inventor: Dai Miyauchi
  • Publication number: 20170359579
    Abstract: An image encoding apparatus of the present invention comprises a frequency converting unit which executes frequency conversion on the data of a frame in moving image data, and generates coefficient data of a plurality of subbands, an encoding unit which quantizes the coefficient data acquired by the frequency converting unit in accordance with a quantization parameter, and encodes the quantized coefficient data, and a code amount controlling unit which controls the encoding unit such that a code amount generated by the encoding unit achieves a target code amount are provided. Here, the code amount controlling unit determines a subband target code amount of each of the plurality of subbands by distributing the target code amount to the plurality of subbands based on a ratio determined according to an indicator indicating a difficulty calculated for each of the plurality of subbands.
    Type: Application
    Filed: June 2, 2017
    Publication date: December 14, 2017
    Inventor: Dai Miyauchi
  • Publication number: 20170353724
    Abstract: An image encoding apparatus includes a plane conversion unit which generates, from image data of one frame of the moving image data, a plurality of planes each formed from a single component, a frequency conversion unit which generates a plurality of subbands for each plane by performing frequency conversion for each plane, a quantization unit which quantizes coefficients in each subband using a quantization parameter, an encoder which encodes the quantized coefficient data, and a control unit which updates the quantization parameter so that a code amount of the encoded data becomes equal to a target code amount set for each plane. The control unit updates the quantization parameter by accumulating a difference between the target code amount set for each plane and a generated code amount of each plane, and distributing the accumulated differences to the plurality of planes.
    Type: Application
    Filed: May 24, 2017
    Publication date: December 7, 2017
    Inventor: Dai Miyauchi
  • Publication number: 20150277945
    Abstract: A front-end driver A 121 receives control data for an I/O device A 401 and outputs the data to a standard driver call function (1) 13. A front-end driver B 122 receives control data for an I/O device B 402 and outputs the data to a standard driver call function (1) 13. The standard driver call function (1) 13 receives the control data for the I/O device A 401 and the control data for the I/O device B 402, and outputs the data to a standard driver call function (2) 31. The standard driver call function (2) 31 outputs the control data for the I/O device A 401 to a standard device driver A 321, and the control data for the I/O device B 402 to the standard device driver B 322. The standard device driver A 321 controls the I/O device A 401 based on the control data, and a standard device driver B 322 controls the I/O device B 402 based on the control data.
    Type: Application
    Filed: November 15, 2012
    Publication date: October 1, 2015
    Applicant: Mitsubishi Electric Corporation
    Inventors: Dai MIYAUCHI, Takayuki ITO