Patents Assigned to Fujitsu General Ltd.
  • Noise detection method, noise reduction method, noise detection device, and noise reduction device
    Publication number: 20060279661
    Abstract: In detection of noise by comparing a digital input image signal and an output image signal in one previous frame with each other, when the input image signal, the output image signal in one previous frame, and a predetermined reference value are represented by a, b, and x, respectively, and when |a?b|?x and a?b?1 are satisfied, the presence of noise is determined.
    Type: Application
    Filed: September 14, 2005
    Publication date: December 14, 2006
    Applicant: FUJITSU GENERAL LTD.
    Inventor: Seiji Matsunaga
  • PLL circuit which compensates for stoppage of PLL operations
    Patent number: 6768357
    Abstract: When a voltage oscillator oscillates abnormally and a PLL circuit stops operating, in order to return to normal operation quickly, presence/absence of a comparison signal (fc) outputted from a frequency divider (4) is detected, and at times when there is no comparison signal (fc), an output signal of a phase comparator (4) is forcibly controlled to a low level temporarily, and an oscillation frequency of a voltage control oscillator (3) is decreased.
    Type: Grant
    Filed: July 23, 2001
    Date of Patent: July 27, 2004
    Assignee: Fujitsu General Ltd.
    Inventors: Takushi Kimura, Masamichi Nakajima
  • Liquid crystal projector
    Patent number: D437870
    Type: Grant
    Filed: June 7, 1999
    Date of Patent: February 20, 2001
    Assignee: Fujitsu General Ltd.
    Inventors: Yoshihiro Shiota, Yoichi Yamazaki