Patents by Inventor Takatomo Nagamine

Takatomo Nagamine 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: 7502077
    Abstract: A video signal-processing device that can improve the apparent contrast of the luminance signal at a television receiving set includes a quantity of black expansion computing section for computationally determining the quantity of black expansion when the luminance component of the input video signal is not higher than a first luminance level, a gain controller for regulating the quantity of black expansion as computationally determined by the quantity of black expansion computing section, a quantity of black expansion adding section for generating an output video signal by adding the quantity of black expansion regulated by the gain controller to the luminance component of the input video signal, and a vertical span adding block for integrating the luminance component of the output video signal not higher than a second luminance level for a field.
    Type: Grant
    Filed: June 24, 2003
    Date of Patent: March 10, 2009
    Assignee: Sony Corporation
    Inventors: Satoshi Miura, Takatomo Nagamine, Yumiko Mito, Jun Ueshima
  • Patent number: 7355653
    Abstract: When an A/D-converted composite video signal is directly outputted while a system clock frequency is switched so as to execute the determination of a signal system, a digital chroma demodulation system prevents the images displayed by the composite video signals from being distorted in accordance with a switching of the frequency of a system clock. The frequency m (=fsc×n) of the system clock is synchronized with a color burst signal and is set to fall in a predetermined range by changing a coefficient n in accordance with the system color burst signal freguency. Thus, since a composite video signal is A/D-converted in accordance with a substantially constant sampling frequency, the sampling condition such as a sampling frequency and a sampling point is not greatly changed.
    Type: Grant
    Filed: February 9, 2004
    Date of Patent: April 8, 2008
    Assignee: Sony Corporation
    Inventors: Takatomo Nagamine, Takahiko Tamura, Jun Ueshima
  • Publication number: 20050162561
    Abstract: When an A/D-converted composite video signal is directly outputted while a system clock frequency is switched so as to execute the determination of a signal system, a digital chroma demodulation system prevents the images displayed by the composite video signals from distorting in accordance with switching of frequency of system clock. As for a frequency m (=fsc×n) of system clock synchronizing with a color burst signal, a frequency m of system clock between systems is set to fall in a predetermined range by changing a coefficient n in accordance with a system (a color bust signal frequency). Thus, since a composite video signal is A/D-converted in accordance with a substantially constant sampling frequency, the sampling condition such as a sampling frequency and a sampling point is not greatly changed.
    Type: Application
    Filed: February 9, 2004
    Publication date: July 28, 2005
    Inventors: Takatomo Nagamine, Takahiko Tamura, Jun Ushima
  • Publication number: 20050157212
    Abstract: A video signal-processing device that can improve the apparent contrast of the luminance signal at a television receiving set includes a quantity of black expansion computing section for computationally determining the quantity of black expansion when the luminance component of the input video signal is not higher than a first luminance level, a gain controller for regulating the quantity of black expansion as computationally determined by the quantity of black expansion computing section, a quantity of black expansion adding section for generating an output video signal by adding the quantity of black expansion regulated by the gain controller to the luminance component of the input video signals and a vertical span adding block for integrating the luminance component of the output video signal not higher than a second luminance level for a field.
    Type: Application
    Filed: June 24, 2003
    Publication date: July 21, 2005
    Inventors: Satoshi Miura, Takatomo Nagamine, Yumiko Mito, Jun Ueshima
  • Patent number: 6597403
    Abstract: There can be solved a problem in which a lock range is narrowed by using an oscillator such as a ceramic having a high Q and a horizontal deflection frequency generating system compatible with all horizontal deflection frequencies of a variety of television systems cannot be formed without difficulty. This system includes a frequency-fixed oscillator oscillating at a frequency f0 sufficiently higher than a deflection frequency fh in a multi-scan display, a first counter for counting a clock outputted from said oscillator in a descending order, a duration in which an integer n which results from rounding a decimal point of a value obtained by a division of f0 fh is divided by an integer m smaller than n and said first counter counts a value k thus obtained k times is set to one cycle and a duration in which a second counter for counting a value m times repeats the counting m cycles is set to one period and thereby generating a deflection frequency fh.
    Type: Grant
    Filed: September 21, 2000
    Date of Patent: July 22, 2003
    Assignee: Sony Corporation
    Inventors: Takatomo Nagamine, Satoshi Miura, Shinji Takahashi
  • Patent number: 6433829
    Abstract: The signal processing apparatus for setting a vertical blanking signal of the television set that allows to set the beginning position and end position of a horizontal blanking signal irrespective of the numbers of lines in the vertical synchronous signal interval, comprising: an up counter for counting the vertical synchronous signal interval, synchronizing with the horizontal synchronous signal to lock forcedly the interlace signal to become a non-interlace signal; and a down counter for loading and down counting the count value of the up counter, wherein the down counter loads the data of the up counter immediately before the up counter is reset at a timing of the vertical synchronous signal and down counts the data which is loaded in the down counter as the initial value.
    Type: Grant
    Filed: May 18, 1999
    Date of Patent: August 13, 2002
    Assignee: Sony Corporation
    Inventors: Takatomo Nagamine, Shinji Takahashi
  • Patent number: 6195134
    Abstract: A horizontal electron-beam deflector capable of preventing circuits from being damaged due to disturbance such as electric discharge with a simple and small circuit configuration, wherein an AFC circuit inputs a control signal indicating a frequency from a computer, the control signal is output to a deflection circuit, the AFC circuit generates a horizontal synchronization pulse signal, and the deflection circuit generates a horizontal deflection signal while controlling a voltage by using the control signal input from the AFC circuit.
    Type: Grant
    Filed: January 19, 1999
    Date of Patent: February 27, 2001
    Assignee: Sony Corporation
    Inventors: Shinji Takahashi, Takatomo Nagamine
  • Patent number: 5196936
    Abstract: A ghost cancelling receiver using ghost cancel reference signal is constructed so that a ghost wave component is adaptively separated from a received video signal on the basis of the level of a noise component thereby to properly cancel the ghost.
    Type: Grant
    Filed: June 27, 1991
    Date of Patent: March 23, 1993
    Assignee: Sony Corporation
    Inventors: Satoshi Kobayashi, Junya Saito, Tsutomu Kume, Takatomo Nagamine
  • Patent number: 5138453
    Abstract: A circuit for detecting a wave distortion in a circuit for eliminating a ghost wave component, wherein a received video signal is applied to a transversal filter, a reference signal for cancelling a ghost signal (GCR signal) is taken out from an output signal from the transversal filter, a ghost wave component is picked up from the GCR signal, a signal for controlling a transmission characteristic of the transversal filter is formed on the basis of the picked-up ghost wave component, and the control signal is applied to the transversal filter to thereby extract from the filter a video signal from which the ghost wave component is cancelled. This circuit includes a variable limiter provided on a signal line for transmitting the control signal to the transversal filter and an unit for controlling a limiter level of the variable limiter to be decreased with time.
    Type: Grant
    Filed: June 10, 1991
    Date of Patent: August 11, 1992
    Assignee: Sony Corporation
    Inventors: Satoshi Kobayashi, Junya Saito, Tsutomu Kume, Takatomo Nagamine