Patents by Inventor Satomi Shigaki

Satomi Shigaki 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: 7408851
    Abstract: Compressed audio data for 5.1 channels stored in the DVD-ROM 11A is read by the AC-3 decoder 12 of a pseudo multi-channel stereo play-back apparatus and, after expansion, stored temporarily in a buffer 13, channel by channel. Among stored audio data stored in the buffer 13, audio data for left and right channels and for a front center channel are then subjected to the phase transformation. Audio data for left and right front channels are mixed with the phase transformed audio data by first and second mixing circuits 21 and 22 and mixed audio data are converted into analog audio signals by first and second D/A converters. The apparatus is capable of pseudo reproduction of the multi-channel audio signals stored in a recording medium such as a DVD-ROM by two channel play-back with an excellent sound effect which is not obtainable by usual two-channel play-back systems.
    Type: Grant
    Filed: December 12, 2005
    Date of Patent: August 5, 2008
    Assignee: NEC Corporation
    Inventor: Satomi Shigaki
  • Publication number: 20080159095
    Abstract: Compressed audio data for 5.1 channels stored in the DVD-ROM 11A is read by the AC-3 decoder 12 of a pseudo multi-channel stereo play-back apparatus and, after expansion, stored temporarily in a buffer 13, channel by channel. Among stored audio data stored in the buffer 13, audio data for left and right channels and for a front center channel are then subjected to the phase transformation. Audio data for left and right front channels are mixed with the phase transformed audio data by first and second mixing circuits 21 and 22 and mixed audio data are converted into analog audio signals by first and second D/A converters. The apparatus is capable of pseudo reproduction of the multi-channel audio signals stored in a recording medium such as a DVD-ROM by two channel play-back with an excellent sound effect which is not obtainable by usual two-channel play-back systems.
    Type: Application
    Filed: February 28, 2008
    Publication date: July 3, 2008
    Inventor: Satomi Shigaki
  • Patent number: 7245822
    Abstract: A recording/reproducing manage unit 25, in response to an instruction, records the images of program into the recording files in order by changing the target recording file in a predetermined interval. Then the unit 25, in response to another instruction, reproduces the recording files in its recorded order. Thereby a recording/reproducing device of broadcasting signals of the invention can complete reproduction of a program at almost the same timing as an end time of real broadcasting of the program, even if the reproduction is started a long time behind the starting of the real broadcasting of the program.
    Type: Grant
    Filed: May 8, 2001
    Date of Patent: July 17, 2007
    Assignee: NEC Corporation
    Inventor: Satomi Shigaki
  • Publication number: 20060114783
    Abstract: Compressed audio data for 5.1 channels stored in the DVD-ROM 11A is read by the AC-3 decoder 12 of a pseudo multi-channel stereo play-back apparatus and, after expansion, stored temporarily in a buffer 13, channel by channel. Among stored audio data stored in the buffer 13, audio data for left and right channels and for a front center channel are then subjected to the phase transformation. Audio data for left and right front channels are mixed with the phase transformed audio data by first and second mixing circuits 21 and 22 and mixed audio data are converted into analog audio signals by first and second D/A converters. The apparatus is capable of pseudo reproduction of the multi-channel audio signals stored in a recording medium such as a DVD-ROM by two channel play-back with an excellent sound effect which is not obtainable by usual two-channel play-back systems.
    Type: Application
    Filed: December 12, 2005
    Publication date: June 1, 2006
    Inventor: Satomi Shigaki
  • Patent number: 6996040
    Abstract: Compressed audio data for 5.1 channels stored in the DVD-ROM 11A is read by the AC-3 decoder 12 of a pseudo multi-channel stereo play-back apparatus and, after expansion, stored temporarily in a buffer 13, channel by channel. Among stored audio data stored in the buffer 13, audio data for left and right channels and for a front center channel are then subjected to the phase transformation. Audio data for left and right front channels are mixed with the phase transformed audio data by first and second mixing circuits 21 and 22 and mixed audio data are converted into analog audio signals by first and second D/A converters. The apparatus is capable of pseudo reproduction of the multi-channel audio signals stored in a recording medium such as a DVD-ROM by two channel play-back with an excellent sound effect which is not obtainable by usual two-channel play-back systems.
    Type: Grant
    Filed: July 21, 2004
    Date of Patent: February 7, 2006
    Assignee: NEC Corporation
    Inventor: Satomi Shigaki
  • Patent number: 6952520
    Abstract: According to the invention, as received stream data is analyzed a sequence header is retrieved and stream data after the detected sequence header is written to storage unit when a recording initiation command is received, a recorded file is generated with a sequence header having image format information required to reproduce stream data immediately after the recording initiation command at the head. As when a reproducing command is received, stream data after the sequence header is read from the storage unit and an image and voice are reproduced, the recorded stream data can immediately normally reproduced without delay and therefore, data acquired by recording stream data used for digital broadcasting and others can be smoothly reproduced.
    Type: Grant
    Filed: September 5, 2000
    Date of Patent: October 4, 2005
    Assignee: NEC Corporation
    Inventor: Satomi Shigaki
  • Publication number: 20040258247
    Abstract: Compressed audio data for 5.1 channels stored in the DVD-ROM 11A is read by the AC-3 decoder 12 of a pseudo multi-channel stereo play-back apparatus and, after expansion, stored temporarily in a buffer 13, channel by channel. Among stored audio data stored in the buffer 13, audio data for left and right channels and for a front center channel are then subjected to the phase transformation. Audio data for left and right front channels are mixed with the phase transformed audio data by first and second mixing circuits 21 and 22 and mixed audio data are converted into analog audio signals by first and second D/A converters. The apparatus is capable of pseudo reproduction of the multi-channel audio signals stored in a recording medium such as a DVD-ROM by two channel play-back with an excellent sound effect which is not obtainable by usual two-channel play-back systems.
    Type: Application
    Filed: July 21, 2004
    Publication date: December 23, 2004
    Applicant: NEC CORPORATION
    Inventor: Satomi Shigaki
  • Patent number: 6781933
    Abstract: Compressed audio data for 5.1 channels stored in a DVD-ROM is read by an AC-3 decoder of a pseudo multi-channel stereo play-back apparatus and, after expansion, stored temporarily in a buffer, channel by channel. Among stored audio data stored in the buffer, audio data for left and right channels and for a front center channel are then subjected to the phase transformation. Audio data for left and right front channels are mixed with the phase transformed audio data by first and second mixing circuits and mixed audio data are converted into analog audio signals by first and second D/A converters. The apparatus is capable of pseudo reproduction of the multi-channel audio signals stored in a recording medium such as a DVD-ROM by two channel play-back.
    Type: Grant
    Filed: December 15, 1998
    Date of Patent: August 24, 2004
    Assignee: NEC Corporation
    Inventor: Satomi Shigaki
  • Publication number: 20020057891
    Abstract: A recording/reproducing manage unit 25, in response to an instruction, records the images of program into the recording files in order by changing the target recording file in a predetermined interval. Then the unit 25, in response to another instruction, reproduces the recording files in its recorded order. Thereby a recording/reproducing device of broadcasting signals of the invention can complete reproduction of a program at almost the same timing as an end time of real broadcasting of the program, even if the reproduction is started a long time behind the starting of the real broadcasting of the program.
    Type: Application
    Filed: May 8, 2001
    Publication date: May 16, 2002
    Inventor: Satomi Shigaki