Invention Grant
- Patent Title: Randomly accessible visual information recording medium and recording method, and reproducing device and reproducing method
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Application No.: US14609933Application Date: 2015-01-30
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Publication No.: US09076485B2Publication Date: 2015-07-07
- Inventor: Tomoaki Ryu , Kazuhiko Nakane , Masaaki Shimada , Yoshihisa Yamada
- Applicant: Mitsubishi Denki Kabushiki Kaisha
- Applicant Address: JP Tokyo
- Assignee: Mitsubishi Electric Corporation
- Current Assignee: Mitsubishi Electric Corporation
- Current Assignee Address: JP Tokyo
- Agency: Birch, Stewart, Kolasch & Birch, LLP
- Priority: JP2004-195476 20040701; JP2004-205250 20040712; JP2004-214080 20040722; JP2004-229683 20040805; JP2004-238482 20040818
- Main IPC: H04N5/917
- IPC: H04N5/917 ; H04N5/92 ; G11B27/00 ; H04N19/577 ; H04N19/44 ; H04N19/593 ; H04N9/87

Abstract:
Access point pictures designated as randomly accessible positions are I pictures or P pictures. Information indicating the decoding sequence (I1, P1, B1, B2, B3, B4, P2, . . . ) of pictures functioning as access points and attribute information (picture_type) indicating whether a picture functions as an access point or is necessary for decoding of the access point following a given access point are recorded on the video information recording medium. Random access is possible even if the GOP interval is lengthened.
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