Patents Examined by John K. Peng
  • Patent number: 6122012
    Abstract: A method of selective color control of a digital video image, using a digital technique. The method features using simple Look-Up-Tables (LUTs), whose values are calculated from uniquely defined color control functions, to digitally change the saturation of a single color of the chromatic part of a video image without affecting saturations of the remaining colors of the chromatic part of the same video image. A digital video input image is scanned, row by row, pixel by pixel. Each input image pixel value, defined from the chromatic part of the video input image, is assigned an address to be operated on by values in individual color LUTs. For a desired change in an individual color of that image, a new digital video output image is produced featuring the desired change in the individual color without affecting the remaining colors of that same image. Application of this method to video images precludes the need to convert video components (e.g., YCrCb) into RGB (red, green, blue) components.
    Type: Grant
    Filed: March 3, 1999
    Date of Patent: September 19, 2000
    Assignee: Oplus Technologies Ltd.
    Inventor: Yosef Segman
  • Patent number: 6122002
    Abstract: The standard brightness region is displayed with input values of zero. The comparison brightness region is displayed with an input value which is variable in the range of 0 to 255. The standard brightness and comparison brightness regions are displayed next to each other in the display. The input value is changed from zero. A first black point is determined as an input value which causes the comparison brightness region to first appear distinguishable from the black regions of the standard brightness regions. Then, the input value is changed from 255. A second black point is determined as an input value which causes the comparison brightness region to first appear indistinguishable from the black regions of the standard brightness regions. Then, a black point is calculated as an average of the first and second black points.
    Type: Grant
    Filed: May 14, 1997
    Date of Patent: September 19, 2000
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventors: Kiyotaka Ohara, Masaaki Hibino, Koji Kobayakawa, Masashi Ueda, Masaaki Hori, Yasunari Yoshida
  • Patent number: 6122013
    Abstract: A chromokeying system includes a store that contains a representation of a known coded chromokeying pattern. The system further includes a frame grabber that grabs a video image including at least a portion of the known coded chromokeying pattern and a foreground subject. A perspective transformation computation unit computes a perspective transformation by comparing the video image of the portion of the coded chromokeying pattern with the known chromokeying pattern. The system may further include a background generation unit that receives a background image and applies the perspective transformation to the background image to produce a transformed background. The portion of the coded chromokeying pattern in the video image can then be replaced by the transformed background to create a composite image.
    Type: Grant
    Filed: December 30, 1996
    Date of Patent: September 19, 2000
    Assignee: Orad, Inc.
    Inventors: Michael Tamir, Avi Sharir
  • Patent number: 6122018
    Abstract: A video display apparatus includes: storage means for holding connection information on connections between a external input terminals and external units corresponding thereto; and switching control means for performing control so that each terminal not connected to the corresponding external unit among the external input terminals is skipped based on the connection information stored in the storage means when the switching of the external input terminals is performed. The switching of the external input terminals is controlled by the steps of: previously storing the connection information on connections between the external input terminals and the external units corresponding thereto in a memory; referring to the stored connection information when the switching of the external input terminals is performed; and skipping each external input terminal not being connected to the corresponding external unit, based on the result of the referring.
    Type: Grant
    Filed: January 15, 1998
    Date of Patent: September 19, 2000
    Assignee: Sony Corporation
    Inventors: Masakazu Sugihara, Haruko Kono
  • Patent number: 6122010
    Abstract: A system for high-speed data transmission using a television signal to communicate encoded data. A multi-level encoding method is employed whereby raw data values are converted into one of a plurality of voltage levels. The encoding method allows for improved data transfer rates, conservation of bandwidth, and self-synchronization for decoding. Mock timing data signals are generated to comply with television signal standards, such as NTSC, SECAM, PAL and HDTV.
    Type: Grant
    Filed: July 22, 1997
    Date of Patent: September 19, 2000
    Assignee: Vidicast Ltd.
    Inventor: Glenn A. Emelko
  • Patent number: 6118479
    Abstract: In FIG. 5, a plurality of signal sources 21.sub.1 to 21.sub.N each generate a carrier with different frequencies. A pulse signal generating portion 23 generates a pulse signal with the same period and time width as those of a horizontal synchronizing signal in NTSC system color television broadcasting. Delay devices 32.sub.1 to 32.sub.N delay timing of the pulse signal for a randomly predetermined delay amount. Level adjuster 52.sub.1 to 52.sub.N generate a modulating signal by adjusting each pulse base of the delayed pulse signal for a level within a range between 12.5% and 74.375% with respect to a pulse top. Modulators 42.sub.1 to 42.sub.N output a signal obtained by modulating the carrier with the modulating signal. A multiplex portion 24 multiplexes the modulated signals to output a resultant signal as a test signal. The error rate of a QAM signal is evaluated with the test signal.
    Type: Grant
    Filed: January 22, 1999
    Date of Patent: September 12, 2000
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Kazuki Maeda, Kuniaki Utsumi, Susumu Morikura
  • Patent number: 6118498
    Abstract: A method and apparatus for masking program selection latency in an MPEG-like information stream receiver, such as an ATSC or DVB television receiver. An information stream receiver receives VSB- or QAM-modulated signals comprising an MPEG-like system streams including program transport streams. In a channel scanning mode of operation, a plurality of identified program transport streams (i.e., channels) are sequentially retrieved from one or more system streams. A portion of each retrieved program transport stream, such as an intra-frame encoded video frame within an included elementary video stream, is extracted and stored in a memory. In a channel changing mode of operation, if a desired channel is one of the sequentially scanned channels, then the stored I-frame is retrieved and coupled to a decoder while the desired channel is re-acquired by tuning, demodulating, and demultiplexing operations.
    Type: Grant
    Filed: November 25, 1997
    Date of Patent: September 12, 2000
    Assignee: Sarnoff Corporation
    Inventor: Glenn Arthur Reitmeier
  • Patent number: 6118486
    Abstract: A multiple format video signal processing system operating in conjunction with a display device timing system to produce synchronized video and timing signals suitable for use by a fixed horizontal scanning frequency display device.
    Type: Grant
    Filed: December 31, 1997
    Date of Patent: September 12, 2000
    Assignee: Sarnoff Corporation
    Inventor: Glenn A. Reitmeier
  • Patent number: 6118472
    Abstract: An apparatus for seamless connectivity between a narrow-band network like the Internet and an interactive TV wide-band network and methods of operating the same support on the fly translation and routing of data between the Internet and the interactive TV wide-band network. The apparatus for interfacing between a wide-band network and a narrow-band network comprises a decoder, having a decoder input, a first decoder port, and a second decoder port, which receives wide-band data from the wide-band network via the second decoder port and decodes the wide-band data to provide decoded data in response to decoder requests from the decoder input.
    Type: Grant
    Filed: June 5, 1996
    Date of Patent: September 12, 2000
    Assignees: Sun Microsystems, Inc., OpenTV, Inc.
    Inventors: Vincent Louis Dureau, Regis St. Girons
  • Patent number: 6118500
    Abstract: A formatter and frame buffer unit (20) for a display system (10) that uses a spatial light modulator (16) to display data formatted in bit-planes. Formatters (21) convert multi-bit pixel data to bit-plane data. The frame buffer memory (25) is comprised of conventional DRAM devices. To allow the use of DRAMs, formatters (21) operate on a number of consecutive pixels, the number of pixels being sufficient for an extended page mode form of addressing the DRAMs.
    Type: Grant
    Filed: August 28, 1997
    Date of Patent: September 12, 2000
    Assignee: Texas Instruments Incorporated
    Inventor: Adam J. Kunzman
  • Patent number: 6115078
    Abstract: A sharpness processing method and apparatus, and a storage medium storing a program, for presenting images with increased perspective or three-dimensional effect. At least two points are designated in a direction of distance on an original image displayed on a display screen. The original image is divided by lines extending perpendicular to and touching opposite ends of a vector defined by the two points. An output image in the proper perspective is obtained by applying no processing to a near view area in the original image, applying a uniformly strong blur processing to a distant view area, and processing an intermediate area in a way to increase blur gradually in the direction indicated by the vector.
    Type: Grant
    Filed: September 10, 1997
    Date of Patent: September 5, 2000
    Assignee: Dainippon Screen Mfg. Co., Ltd.
    Inventor: Masatoshi Kino
  • Patent number: 6111595
    Abstract: A method and apparatus for transmitting video over telephone lines is provided. FM data is produced representative of a video picture to be transmitted and synchronization data concerning the transmitted picture is also produced. The FM data and the synchronization data are transmitted via telephone lines to a receiver. A pair of memories is provided in the receiver. The receiver uses the synchronization data to coordinate the storage and display of the received pictures. One memory displays the picture while the other memory is being loaded. The memories are toggled so that the memory from which the previously stored data is displayed becomes the memory being loaded and the memory being loaded becomes the memory from which previously stored data is displayed. Alternatively, one memory is a load memory while the other memory is a display memory. After the incoming picture is stored in the load memory, it is transferred to the display memory.
    Type: Grant
    Filed: August 22, 1997
    Date of Patent: August 29, 2000
    Assignee: Northern Information Technology
    Inventor: James P. Hertrich
  • Patent number: 6111610
    Abstract: In arrangements for the frame rate upconversion of motion-picture-source video, a 60 Hz (interlaced field rate or progressive scan frame rate) television signal is converted to a form suitable for display on a variable-frame-rate high-resolution progressively-scanned monitor of the type typically associated with a computer or with a television set employing an increased frame rate. The inherent 3-2 motion picture film pulldown pattern in the source signal is changed to an equal time frame pattern, such as 3-3, 4-4, or 5-5, when the source signal is converted to a higher frame rate. This may be accomplished when the increased progressively-scanned video display frame rate is an integral multiple of the motion picture frame rate, namely 72 Hz, 96 Hz and 120 Hz.
    Type: Grant
    Filed: December 18, 1997
    Date of Patent: August 29, 2000
    Assignee: Faroudja Laboratories, Inc.
    Inventor: Yves C. Faroudja
  • Patent number: 6111613
    Abstract: A receiver which receives two-channel multiplex broadcasting by using television sub audio. Two-channel data and/or facsimile data which are multiplexed on the broadcasting sub audio band of the television broadcasting wave including a video band, a main audio band and a sub audio band are displayed, printed and output. The receiver may have a device for displaying and printing data multiplexed on the sub audio band of the FM broadcasting wave, and further may have a device for displaying a television picture. The receiver may perform only one, some or all of the functions of displaying, printing and outputting multiplexed data.
    Type: Grant
    Filed: April 1, 1998
    Date of Patent: August 29, 2000
    Assignees: LSI Japan Co., Ltd., Asahi National Broadcasting Co., Ltd.
    Inventors: Kouji Sasano, Takashi Tanaka
  • Patent number: 6108042
    Abstract: An interactive video system is disclosed that processes a video data stream and an associated data stream corresponding to the video data stream. The interactive video system displays a video image defined by the video data stream on a display device and performs interactive command functions specified by the associated data stream. The interactive command functions include commands that specify placement of a video display window, commands that specify parameters of graphical objects that are associated with the video image and commands that specify pixel data or graphics description for the graphical object and commands for placement of selection windows and that specify interactive functions for the selection windows.
    Type: Grant
    Filed: December 17, 1997
    Date of Patent: August 22, 2000
    Assignee: Intel Corporation
    Inventors: Robert Adams, David M. Williams, John Richardson, Burt Perry
  • Patent number: 6104441
    Abstract: This disclosure provides for an image editing system that permits manipulation of compressed image formats without full decompression to the image domain. In particular, an editor manipulates discrete cosine transform ("DCT") coefficients for a dependent frame in a compressed image sequence to incorporate DCT representations of anchor frames upon which the dependent frame depends. Once converted, the frame can simply be reordered in the compressed domain without violating temporal dependencies, subject to bit rate matching. In one embodiment, an image sequence can be cut to leave remaining image frames which are then altered, so as to eliminate temporal dependencies upon eliminated frames. In another embodiment, an image sequence can be processed in the compressed domain for reverse-play. The editor provided by this disclosure permits real-time compressed domain editing applications, with reduced requirements for computational bandwidth.
    Type: Grant
    Filed: April 29, 1998
    Date of Patent: August 15, 2000
    Assignee: Hewlett Packard Company
    Inventors: Susie J. Wee, Bhaskaran Vasudev
  • Patent number: 6100938
    Abstract: A gamma correction circuit for a television receiver includes a low pass filter for filtering a luminance signal gamma-corrected in a transmitter side and outputting a low frequency zone component luminance signal, a luminance signal corrector for compensating for a high frequency zone component with regard to a color signal transmitted from the transmitter side and the low frequency zone component luminance signal outputted from the low pass filter, an operator for applying a subtraction and a division with regard to the low frequency zone component luminance signal outputted from the low pass filter and the corrected luminance signal, and a color signal restoration unit for restoring a original color signal using the color signal corrected in the corrector and the luminance signal outputted from operator, for thereby being provided to a CPT (color picture tube).
    Type: Grant
    Filed: July 15, 1997
    Date of Patent: August 8, 2000
    Assignee: LG Electronics Inc.
    Inventors: Yeong-Ho Ha, Tae-Shik Kim
  • Patent number: 6100939
    Abstract: A intra-field time division tone display method for dividing the time width in a field of a TV signal into a plurality of subfields in the pixel storing time direction and displaying the TV image by controlling the presence or absence of light emission of the subfields and an apparatus therefor, wherein there are at least two subfields (most significant subfields) whose luminant time widths are longest and almost equal and when it is assumed that the tones are displayed in the ascending order starting from the lowest level of tone in light emission of the subfields, the tone of a TV image signal is displayed under a rule that two or more light emissions are not started from the aforementioned at least two most significant subfields at the same time, accordingly the dynamic false contour noise of a moving image followed by movement of the viewing point can be reduced remarkably and a moving image of high image quality and high quality can be obtained.
    Type: Grant
    Filed: September 16, 1996
    Date of Patent: August 8, 2000
    Assignees: Hitachi, Ltd., Shigeo Mikoshiba, Takhiro Yamaguchi, Kohsaku Toda
    Inventors: Akihiko Kougami, Masaji Ishigaki, Shigeo Mikoshiba, Takahiro Yamaguchi, Kohsaku Toda
  • Patent number: 6097445
    Abstract: A color display with a white balance self-adjusting function, including a DC-voltage-level/gain adjusting circuit for adjusting, on the basis of adjustment data, the DC voltage level and the gain of each of R, G and B primary color signals, thereby outputting the adjusted signals. Also includes is a CRT driving circuit responsive to the output signals of the DC-voltage-level/gain adjusting circuit for outputting CRT driving signals to drive the color CRT of the display, and a cathode current detecting circuit for detecting currents flowing through the cathode electrodes of the color CRT.
    Type: Grant
    Filed: March 28, 1997
    Date of Patent: August 1, 2000
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Kenji Goto, Hiroshi Karasuda, Takeo Hagiwara
  • Patent number: 6097437
    Abstract: A format converter includes: a microcomputer for receiving horizontal and vertical synchronizing signals from a host, determining a video mode, and generating data that indicates the number of dots per a period of a horizontal output signal; a W-PLL and time generator for receiving the data from the microcomputer, and generating a write clock signal; an R-PLL and time generator for receiving the data and the horizontal synchronizing signal respectively generated by the microcomputer and the host, and generating a read clock signal; an AD converting section for sampling an analog picture signal received from the host according to the write clock signal of the W-PLL and time generator, and converting it to a digital picture signal; and a format converting section for storing the picture signal received from the AD converter according to the period of the write clock signal of the W-PLL and time generator, and converting the format of the stored picture signal according to the read clock signal received from the
    Type: Grant
    Filed: December 18, 1997
    Date of Patent: August 1, 2000
    Assignee: SamSung Electronics Co., Ltd.
    Inventor: Ho-Dae Hwang