Patents by Inventor Sachiko Nakatsuka

Sachiko Nakatsuka 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).

  • Image quality improving device and method
    Patent number: 8363166
    Abstract: A Gaussian filter 2 having a first cutoff frequency extracts a low frequency component signal of a video signal. A subtracter 3 extracts a high frequency component signal by subtracting the low frequency component signal from the video signal. A low pass filter 5 having a second cutoff frequency higher than the first cutoff frequency extracts a lower high frequency component signal, which is a low-frequency-side signal of the high frequency component signal. A multiplier 6 generates a corrected component signal by multiplying the lower high frequency component signal by a predetermined gain G1. An adder 7 adds the corrected component signal to the video signal.
    Type: Grant
    Filed: July 15, 2009
    Date of Patent: January 29, 2013
    Assignee: JVC Kenwood Corporation
    Inventors: Sachiko Nakatsuka, Kenji Kubota, Hideki Aiba, Junichi Hasegawa, Satoshi Toyoshima
  • IMAGE QUALITY IMPROVING DEVICE AND METHOD
    Publication number: 20110267540
    Abstract: A Gaussian filter 2 having a first cutoff frequency extracts a low frequency component signal of a video signal. A subtracter 3 extracts a high frequency component signal by subtracting the low frequency component signal from the video signal. A low pass filter 5 having a second cutoff frequency higher than the first cutoff frequency extracts a lower high frequency component signal, which is a low-frequency-side signal of the high frequency component signal. A multiplier 6 generates a corrected component signal by multiplying the lower high frequency component signal by a predetermined gain G1. An adder 7 adds the corrected component signal to the video signal.
    Type: Application
    Filed: July 15, 2009
    Publication date: November 3, 2011
    Applicant: VICTOR COMPANY OF JAPAN, LIMITED
    Inventors: Sachiko Nakatsuka, Kenji Kubota, Hideki Aiba, Junichi Hasegawa, Satoshi Toyoshima