The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 05, 2000
Filed:
Dec. 09, 1997
Takanobu Kondo, Kanagawa, JP;
Sony Corporation, Tokyo, JP;
Abstract
In transmitting an MPEG transport stream, each audio signal packet is placed after the corresponding video signal packet when audio and video transport streams are multiplexed. If simple switching were made to switch between a plurality of programs to form a multiplexed transport stream of the programs, part of the audio packets that are placed behind would be lost to cause abnormal sound. In the invention, switching between programs is made by providing signal switching means separately for audio transport streams and video transport streams. As a result, when the program to be transmitted is changed from one program to another, the signal switching means can be switched in such a manner that none of the audio signal packets that constitute those programs are lost.