Title:
VARIABLE-LENGTH FRAME TRANSMISSION DEVICE, AND VARIABLE-LENGTH FRAME TRANSMISSION METHOD
Document Type and Number:
WIPO Patent Application WO/2000/052859
Kind Code:
A1
Abstract:
When audio information is multiplexed at the next frame in an SB insertion judging unit (124), a synchronous word and the length of a header are subtracted from the distance between the end of the previous frame and the multiplex starting position of the audio information, to calculate a multiplexable length of video information. When the length of important information is greater than the video multiplexable length, it is judged to be necessary to multiplex a stuffing bit stream. In this case, a frame constructing unit (127) inserts redundancy bits from the end position of the previous frame to the front end of the synchronous word. Therefore when the transmission data are multiplexed, the important information can be prevented from being divided into a plurality of frames.
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Inventors:
IDO DAIJI (JP)
Application Number:
PCT/JP2000/000979
Publication Date:
September 08, 2000
Filing Date:
February 22, 2000
Export Citation:
Assignee:
MATSUSHITA ELECTRIC IND CO LTD (JP)
IDO DAIJI (JP)
IDO DAIJI (JP)
International Classes:
H04J3/00; H04L7/08; H04L47/43; H04N7/08; H04N7/081; H04N19/00; H04N19/70; H04N21/2368; H04N21/238; H04N21/434; (IPC1-7): H04J3/00; H04L12/56; H04N7/08; H04N7/24
Foreign References:
| JPH10191272A | 1998-07-21 | |||
| JP2000049726A | 2000-02-18 |
Other References:
TOSHIAKI WATANABE.: "Coding Method of MPEG4 Standard", TECHNICAL REPORT OF THE INSTITUTE OF IMAGE INFORMATION AND TELEVISION ENGINEERS, vol. 21, no. 57, 8 October 1997 (1997-10-08), pages 25 - 32, XP002928284
Attorney, Agent or Firm:
Washida, Kimihito (Shintoshicenter Bldg. 24-1 Tsurumaki 1-chome Tama-shi, Tokyo, JP)
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