Patents Examined by Alicia M Duggins
  • Patent number: 6999673
    Abstract: A moving picture decoding apparatus is provided which reduces the deterioration in image quality due to errors by a concealment processing for decoded image data, thereby improving the image quality of decoded images, without causing high deterioration in image quality resulting from the concealment processing. The moving picture decoding apparatus includes a decoder for decoding an input stream for each macroblock and generating decoded image data, a transmission error detector for detecting a transmission error in the input stream, and a stream error detector for detecting a stream error in the input stream. When the transmission error is detected, the moving picture decoding apparatus conceals the decoded image data in macroblock units and when the stream error is detected, the moving picture decoding apparatus conceals the decoded image data in video packet units.
    Type: Grant
    Filed: September 22, 2000
    Date of Patent: February 14, 2006
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventor: Shinya Kadono
  • Patent number: 6965728
    Abstract: A digital recording apparatus includes a compression device that performs, every time a signal corresponding to one field is inputted, compression processing using a compression rate stored in by-channel compression rate storage area, corresponding to the inputted signal, in a storage device. A compression rate control device updates, every time the signal corresponding to one field has been compressed by the compression device, the compression rate stored in the by-channel compression rate storage area, corresponding to the inputted signal, in the storage device to such a value that an amount of coding after the compression approaches a predetermined target amount of coding on the basis of the amount of coding after the compression and the target amount of coding.
    Type: Grant
    Filed: August 2, 2000
    Date of Patent: November 15, 2005
    Assignee: Sanyo Electric Co., Ltd.
    Inventors: Kazunori Miyata, Kazuhiko Nakamura
  • Patent number: 6961510
    Abstract: In a reproducing device (1) for the reproduction of reproduction data (WD) recorded on a magnetic tape (2), having transport means (7) for the transport of the magnetic tape (2) with a normal-play speed (VNS, VNLS2, VNLS3, VNLS5, VNLS7, VNHS), a first trick-play speed (VT1) and at least a second trick-play speed (VT2, VT3), the normal-play speed (VNS, VNLS2, VNLS3, VNLS5, VNLS7, VNHS) corresponding to a recording speed during the recording of the reproduction data (WD) on the magnetic tape (2), and having reproducing means (13) for the reproduction of normal-play reproduction data (NP1, NP2, NP3, NP4, NP5) recorded on the magnetic tape (2) during transport of the magnetic tape (2) with the normal-play speed (VN), of first trick-play reproduction data (TPD1, TPD6) recorded during transport of the magnetic tape (2) with the first trick-play speed (VT1), and of second trick-play reproduction data (TPD2, TPD3, TPD4, TPD5, TPD7) recorded during transport of the magnetic tape (2) with the second trick-play speed (V
    Type: Grant
    Filed: August 9, 2000
    Date of Patent: November 1, 2005
    Assignee: Koninklijke Philips Electronics N.V.
    Inventor: Aolf Proidl
  • Patent number: 6954582
    Abstract: Disclosed is a digital VTR comprising means for recording a cue mark in a position, corresponding to a predetermined position in the middle of each recording block, on a control track of a magnetic tape at the time of recording, means for stopping, at the time point where actual data in the recording block are stored in predetermined amounts in a memory, the acceptance of the data in the memory and accelerating a capstan motor at the time of fast-forward play, and means for decelerating the capstan motor when the cue mark is detected.
    Type: Grant
    Filed: February 15, 2001
    Date of Patent: October 11, 2005
    Assignee: Sanyo Electric Co., Ltd.
    Inventors: Ayumu Okutani, Yoshiki Hirose, Akira Yamasaki, Tetsuro Yabumoto, Kazunori Miyata
  • Patent number: 6934464
    Abstract: An interface circuit that accepts control commands for creating AV files, and a hard disk control circuit, are provided, and loop recording can be performed on the basis of an AV file. Further, in loop recording operation, a frame number of a first frame of an AV file is stored in an AV file area management table as an offset value, and a position of each frame is managed by assigning a corresponding frame number from a start of loop recording onward, thereby enabling position indication such that the record position and reproduce position increase with the passage of time, even in loop recording mode.
    Type: Grant
    Filed: December 17, 1999
    Date of Patent: August 23, 2005
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Yasushi Ayaki, Toshikazu Kodo, Hiroyuki Iitsuka, Satoshi Kondo
  • Patent number: 6931199
    Abstract: A digital television (DTV) operating screen is displayed on the cathode ray tube (CRT) display screen of a DTV which is the controlling apparatus of a network. In the event that the user selects a digital video home system (DVHS) from the buttons displayed on the DTV operating screen, data corresponding to the DVHS operation screen is input to the DTV, and a DVHS operation screen is displayed on the CRT display screen 61. The user operation instructions executed regarding the DVHS operation screen are notified from the digital television DTV to the DVHS, so the DTV can execute control corresponding to the operations of the user, without transmitting commands for directly controlling the DVHS.
    Type: Grant
    Filed: October 19, 2000
    Date of Patent: August 16, 2005
    Assignee: Sony Corporation
    Inventor: Naoyuki Sato
  • Patent number: 6928228
    Abstract: A system and method for detection and analysis of video recording is disclosed. The method comprises receiving a video recording, calculating complexity values of video recording received, comparing the calculated complexity values with reference complexity values, and displaying analysis of video recording on a user interface is disclosed. The system comprises an input device for receiving video recording, a computing device for calculating complex values of received video recording, a comparator device for comparing complex values of video recording, and a storage device for storing internal data.
    Type: Grant
    Filed: May 20, 2002
    Date of Patent: August 9, 2005
    Assignee: Gordonomics Ltd.
    Inventor: Goren Gordon
  • Patent number: 6885809
    Abstract: A recording apparatus includes a reception unit and a recording unit. The reception unit receives a broadcast signal, out of a plurality of broadcast signals that can be specified by conditions made up of broadcast frequencies and other items such as reception areas. The recording unit records the broadcast signal received by the reception unit and broadcast ID information that enables the broadcast signal to be identified out of a plurality of broadcast signals, onto a recording medium in an interrelated manner. A playback apparatus includes a reading unit, a display unit and a playback unit. The reading unit reads a program, which is a broadcast signal during a certain period, and at least part of broadcast ID information. The display unit displays at least part of the read broadcast ID information and the playback unit plays back the read program.
    Type: Grant
    Filed: October 5, 2000
    Date of Patent: April 26, 2005
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventor: Shin Asada
  • Patent number: 6882792
    Abstract: To provide a time-shift replaying system, which includes two time-shift replaying devices and allows two users to watch video image with different time-shift periods at the same time. Especially, one of the time-shift replaying device functions as a server, and the another functions as a client, which is simplified its structure and at low cost by comparison with the time-shift replaying device functioning as a server.
    Type: Grant
    Filed: November 30, 2001
    Date of Patent: April 19, 2005
    Assignee: NEC Corporation
    Inventor: Hideki Sawada
  • Patent number: 6871002
    Abstract: This DSM-CC carousel receiver has a DSM-CC section receiving section for receiving a transport stream of MPEG2 (Moving Picture Experts Group-2) and extracting what forming a DSM-CC section, a DSM-CC section analysis section for judging whether the DSM-CC section extracted is DDB configuring the DII unobtained module, a temporary module information setting section for setting temporary module information for the DDB when it is judged to be DDB, which configures the DII unobtained module, by the DSM-CC section analysis section, and a writing section for writing the DDB configuring the DII unobtained module into the storage section according to the temporary module information determined by the temporary module information setting section.
    Type: Grant
    Filed: October 5, 2000
    Date of Patent: March 22, 2005
    Assignee: NEC Corporation
    Inventor: Shigeru Saito
  • Patent number: 6865337
    Abstract: A system and method for detecting whether a video signal is modified by a video-tape-recorder-design based anti-copying process. A proper portion of the video signal is identified and filtered, and potential anti-copying artifacts in the filtered signal are counted by comparing the filtered output against a threshold derived from the video-tape-recorder-design based anti-copying process. By cross-correlating the number of potential anti-copying artifacts, found on multiple scan lines across multiple frames, with an expected minimum range and/or number of anti-copying artifacts derived from the video-tape-recorder-design based anti-copying process, anti-copying modifications of the video signal are detected. In this fashion, traditional video-tape-recorder-design based anti-copying processes are applied to modem digital video recording systems.
    Type: Grant
    Filed: August 8, 2000
    Date of Patent: March 8, 2005
    Assignee: Conexant Systems, Inc.
    Inventor: Stephen C. Muller
  • Patent number: 6856754
    Abstract: A content recording/erasing apparatus includes a hard disk. An unnecessary MPEG file recorded on the hard disk is intermittently erased part by part in parallel with a normal recording process. It is noted that prior to a start of erasing the unnecessary MPEG file, time length data relating to a total amount of an actual remaining amount of the hard disk and the unnecessary MPEG file is set in a remaining amount register, and a setting value is periodically subtracted.
    Type: Grant
    Filed: June 23, 2003
    Date of Patent: February 15, 2005
    Assignee: Sanyo Electric Co., Ltd.
    Inventor: Tetsuro Sameshima
  • Patent number: 6850694
    Abstract: The present invention relates to a video signal processing apparatus for outputting an inputted video signal after subjecting the video signal to time axis correction, particularly to a video signal processing apparatus preferable in the case of subjecting the video signal to image compression. In the case in which a nonstandard signal is inputted to an image compression circuit of an MPEG2 encoder or the like, a drawback of freezing image or generating block noise or the like is resolved. A time axis correcting circuit stores an input signal to a memory and reads the input signal at a timing delayed from V synchronization of the input signal by a predetermined time period. For that purpose, a read synchronizing signal generator is reset at respective input field. A reset position is set to a position preceding the read V synchronization position by 3H through 10H.
    Type: Grant
    Filed: August 18, 2000
    Date of Patent: February 1, 2005
    Assignee: Hitachi, Ltd.
    Inventors: Eiji Moro, Ken Sodeyama, Hiroyuki Hori, Katsuyuki Watanabe, Akifumi Tabata
  • Patent number: 6839090
    Abstract: A video reproduction apparatus includes a video player 3 which reproduces a video signal, a V-chip signal for restricting a display of a specific image being added to the video signal; a video processing circuit 5 which processes the video signal from the video player 3; a CRT 7 which displays the video signal that is processed by the video processing circuit 5; a control section 10 which reads out the V-chip signal and judges whether a screen is to be blocked or not; and a memory 11 which stores a result of the judgment. When a mode is transferred to a special play mode, a judgment result which immediately precedes the mode transfer is read out from the memory 11. If the judgment result is that the blocking is to be blocked, the screen of the CRT 7 is set to a blocked state.
    Type: Grant
    Filed: July 21, 2000
    Date of Patent: January 4, 2005
    Assignee: Funai Electric Co., Ltd.
    Inventor: Shigeru Yokota
  • Patent number: 6839504
    Abstract: An information recording medium for recording a real-time file containing real-time data in such a manner that the real-time data is continuously reproducible by a playback reference model, the real-time data including at least one of video data and audio data. The playback reference model includes: a pickup for reading the real-time data from the information recording medium; a buffer memory for temporarily storing the real-time data read by the pickup; and a decoder module for reading the real-time data from the buffer memory for processing. The information recording medium includes a volume space for at least recording in sectors a file containing data and file management information for managing the file. The real-time data is recorded in at least two real-time extents each of which is allocated in logically contiguous sectors within the volume space. An (1+1)th real-time extent among the at least two real-time extents is positioned at a position satisfying a real-time reproduction condition.
    Type: Grant
    Filed: September 29, 2000
    Date of Patent: January 4, 2005
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Yoshiho Gotoh, Hiroshi Ueda, Miyuki Sasaki, Yoshihisa Fukushima
  • Patent number: 6834156
    Abstract: The invention relates generally to a receiver unit in a digital broadcast system for receiving a broadcast signal comprising content segments and control data, and generating an output signal using the content segments and previously stored content segments at the receiver. The previously stored content segments are decrypted. The receiver is configured to obtain authorization from a remote distribution center to decrypt locally stored content segments requested by a user for recording onto a portable storage medium.
    Type: Grant
    Filed: October 25, 2000
    Date of Patent: December 21, 2004
    Assignee: XM Satellite Radio, Inc.
    Inventors: Paul D. Marko, Craig P. Wadin
  • Patent number: 6819863
    Abstract: For use in a video signal processor, there is disclosed a system and method for locating program boundaries and commercial boundaries using audio categories. The system comprises an audio classifier controller that obtains information concerning the audio categories of the segments of an audio signal. Audio categories include such categories as silence, music, noise and speech. The audio classifier controller determines the rates of change of the audio categories. The audio classifier controller then compares each rate of change of the audio categories with a threshold value to locate the boundaries of the programs and commercials. The audio classifier controller is also capable of classifying at least one feature of an audio category change rate using a multifeature classifier to locate the boundaries of the programs and commercials.
    Type: Grant
    Filed: December 22, 2000
    Date of Patent: November 16, 2004
    Assignee: Koninklijke Philips Electronics N.V.
    Inventors: Serhan Dagtas, Nevenka Dimitrova
  • Patent number: 6813436
    Abstract: A digital watermark detection circuit detects a digital watermark inserted in an input signal. When the digital watermark detection circuit detects a digital watermark indicating the prohibition of duplication, a record controlling circuit controls a recording circuit and a recording drive to stop recording and prohibit recording to a recording medium for a predetermined time.
    Type: Grant
    Filed: August 29, 2000
    Date of Patent: November 2, 2004
    Assignee: Sony Corporation
    Inventor: Jun Hirai
  • Patent number: 6771878
    Abstract: A system for storing, restoring and distributing video-films, based on optical disks of very high definition, that makes use of DVD disks (Digital Versatile Disk) as a support for the storing of films, so that said films may be stored onto said disks in a compressed format according to the MPEG-2 standard, and where the algorithm allows to modify the compression factor according to the requested quality from a few Mbps to a considerable number of Mbps.
    Type: Grant
    Filed: October 3, 2000
    Date of Patent: August 3, 2004
    Assignee: Systems S.p.A.
    Inventors: Luigi Caramico, Mario Meneā€²
  • Patent number: 6771879
    Abstract: A video processor produces video and key signals to be processed by a television production switcher for superimposing text or the like on a background image. The video processor has a key generator for receiving an input video signal and an input key signal and selecting one of these signals and shaping waveforms of the selected signal. Responsive to a first control signal, the input video signal is stored in a first frame memory and read during a later frame interval. Responsive to a second control signal, the output signal of the key generator is stored in a second frame memory and read during a later frame interval. A delay time corresponding to the processing time of the key generator is introduced to the input video signal. A first switch selects one of the outputs of the delay circuit and the first frame memory, and a second switch selects one of the outputs of the key generator and the second frame memory.
    Type: Grant
    Filed: October 27, 2000
    Date of Patent: August 3, 2004
    Assignee: NEC Corporation
    Inventor: Yuichi Watanabe