Differential Phase Or Amplitude Responsive Patents (Class 348/710)
  • Patent number: 9088740
    Abstract: In a system and method of reducing noise, an image sensor with a color filter array (CFA) outputs raw data, and a noise reduction device corrects the raw data according to distances between an original current pixel and neighboring same-color pixels in a process mask, thereby generating a new current pixel so as to output corrected raw data. A color interpolation device couples to receive the corrected raw data to result in full-color data.
    Type: Grant
    Filed: June 21, 2013
    Date of Patent: July 21, 2015
    Assignee: Himax Imaging Limited
    Inventors: Yen-Te Shih, Po-Chang Chen
  • Patent number: 8368816
    Abstract: A circuit for detecting motion pictures includes a first-stage motion picture detecting unit and a second-stage motion picture detecting unit. The first-stage motion picture detecting unit analyzes a current image frame and a previous image frame to calculate a first motion value associated with the current image frame. The second-stage motion picture detecting unit receives the first motion value, compares the first motion value against an adjusted motion value, and outputs and stores a larger one as a second motion value. The adjusted motion value is a value derived by adjusting an adjacent previous second motion value.
    Type: Grant
    Filed: July 28, 2009
    Date of Patent: February 5, 2013
    Assignee: Novatek Microelectronics Corp.
    Inventor: Teng-Yi Lin
  • Patent number: 7787526
    Abstract: An interface circuit for a multi-differential embedded-clock channel for communicating data provides efficient utilization of the bandwidth of the channel. The interface circuit includes at least four first signals, at least four second signals, and a multi-differential amplifier. The multi-differential amplifier is coupled to the first and second signals. The multi-differential amplifier is adapted to generate the second signals by amplifying, for all combinations of two of the first signals, differential transitions between the two of the first signals. Each of a plurality of symbols of the data has a corresponding one of the differential transitions, and the differential transitions are serially communicated through the channel.
    Type: Grant
    Filed: July 12, 2005
    Date of Patent: August 31, 2010
    Inventor: James Ridenour McGee
  • Patent number: 7174082
    Abstract: In a de-emphasis circuit designing method for minimizing the number of peripheral components of a video signal processing integrated circuit (IC), a circuit device for determining the level of a reproduced video signal of the de-emphasis circuit is included in the video signal processing IC. The number of components is reduced by designing all circuit elements of the circuit device for determining the level of the reproduced video signal of the de-emphasis circuit so that they are incorporated into the video signal processing IC at the time of design of the video signal processing IC, thereby reducing cost and reducing any deviation in the playback (PB) level due to external component deviation.
    Type: Grant
    Filed: April 11, 2001
    Date of Patent: February 6, 2007
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Chul-min Kim
  • Patent number: 6188444
    Abstract: An apparatus and method for improving the clarity of a picture produced from a video signal. A differentiation circuit is provided that produces a responsive correction signal. Mechanisms for adjusting the shape (width, amplitude, etc.) of the correction signal are disclosed. Disabling the correction signal during blanking intervals and synchronization is also disclosed, among other features.
    Type: Grant
    Filed: March 13, 1998
    Date of Patent: February 13, 2001
    Assignee: NuWave Technologies, Inc.
    Inventor: Robert I. Webb
  • Patent number: 5959698
    Abstract: A poly phase filter for converting a sampling frequency of a digital video signal to perform a dot sequential color difference signal conversion operation, the digital video signal including a luminance signal and a color difference signal, the color difference signal including two color difference signal components. The poly phase filter is adapted to generate a plurality of poly phase filter coefficients to be used to process the luminance signal and to process the color difference signal. The poly phase filter is also adapted to process the generated poly phase filter coefficients in units of two to process the color difference signal. Therefore, the present invention has the effect of reducing the hardware size and the associated cost.
    Type: Grant
    Filed: October 18, 1996
    Date of Patent: September 28, 1999
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Ji Ho Kim
  • Patent number: 5872605
    Abstract: A video signal processing apparatus includes an equalizer for delaying an input color signal by an adjustable phase retardation. A low pass filter is operative for delaying the input color signal by an adjustable phase retardation. A phase detector is operative for detecting a difference between a phase of an output signal of the equalizer and a phase of an output signal of the low pass filter, and outputting a signal representative of the detected phase difference. The phase retardation provided by the equalizer and the phase retardation provided by the low pass filter are adjusted in response to the output signal of the phase detector to maintain the difference between the phase of the output signal of the equalizer and the phase of the output signal of the low pass filter at a predetermined value, for example, 90 degrees.
    Type: Grant
    Filed: May 28, 1997
    Date of Patent: February 16, 1999
    Assignee: Victor Company of Japan, Ltd.
    Inventors: Tomoyuki Nonaka, Akifumi Tabata, Hiroyuki Hori, Akira Okasaka, Masahiro Sasaki, Kazuki Ito
  • Patent number: 5675387
    Abstract: Pixel data is stored and subsequently read from a random access memory of a video decompression processor in a manner that reduces the number of times different rows of the RAM must be addressed in order to retrieve portions of the pixel data therefrom. Pixel data from a video frame is stored in the RAM as a plurality of pages. Each page substantially fills a different row of the RAM and corresponds to a different section of the video frame. A motion vector is decoded to determine the location of a prediction area within the video frame. In the event that the prediction area encompasses more than one of the pages of the video frame, the pixel data is retrieved one page at a time, minimizing the number of row changes required when addressing the RAM to retrieve the data.
    Type: Grant
    Filed: July 25, 1996
    Date of Patent: October 7, 1997
    Assignee: General Instrument Corporation of Delaware
    Inventors: Chris Hoogenboom, Bao Vuong
  • Patent number: 5442328
    Abstract: A correction system for transmission lines includes a structure adapted to automatically correct the attenuation of the DC component of any signal traveling on the line and a device adapted to correct the attenuation of the various frequency components of said signal, wherein the structure for correcting the attenuation of frequency components includes an automatic correction circuit.
    Type: Grant
    Filed: December 31, 1992
    Date of Patent: August 15, 1995
    Assignee: Thomson Broadcast
    Inventor: Pierre Halin
  • Patent number: 5361039
    Abstract: The disclosure relates to the linear power amplification, in a single channel, of a composite signal formed by two independent signals. In a single channel formed by correction means followed by a linear preamplifier followed by a saturated amplifier, the filtering and symmetry effect produced, both in the correction means and in the saturated amplifier, is advantageously used to compensate for clipping of the composite signal due to the amplifier. This makes it possible to obtain an undistorted output signal whose amplitude exceeds the level of saturation of the saturated amplifier. The compensation makes it necessary for the transfer characteristic of the correction means to have a given slope between two points beyond which the saturation appears in the saturated amplifier and a slope that is substantially thrice the given slope on each side of these two points.
    Type: Grant
    Filed: June 21, 1993
    Date of Patent: November 1, 1994
    Assignee: Thomson-LGT Laboratoire General des Telecommunications
    Inventor: Jean Michel
  • Patent number: 5343236
    Abstract: In an automatic cable attenuation compensation system comprising a fixed compensation part (FC-R/G/B) providing a stepwise adjustable attenuation compensation for substantially compensating cable attenuation, the stepwise adjustable attenuation compensation of the fixed compensation part being set after power-up, an adaptive compensation part (VC-R/G/B) is provided for a continuously active compensation for a further accurate compensation of the cable attenuation.
    Type: Grant
    Filed: June 1, 1993
    Date of Patent: August 30, 1994
    Assignee: U.S. Philips Corporation
    Inventors: Rudolf P. Koppe, Nicolaas J. H. Eck
  • Patent number: 5311298
    Abstract: Simplified apparatus for controlling the phase and amplitude of the chroma subcarrier of a television signal is disclosed. The phase control includes compensation so that the color burst amplitude is stable as the phase is varied.
    Type: Grant
    Filed: January 15, 1992
    Date of Patent: May 10, 1994
    Inventor: James A. Karlock