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:
Feb. 13, 2007
Filed:
May. 18, 2004
Kazuyuki Uchida, Osaka, JP;
Kengo Nishimura, Osaka, JP;
Akihiro Miyazaki, Osaka, JP;
Jyunichi Nakahashi, Nara, JP;
Kunihiko Hayashi, Osaka, JP;
Satoshi Ikawa, Osaka, JP;
Kazuyuki Uchida, Osaka, JP;
Kengo Nishimura, Osaka, JP;
Akihiro Miyazaki, Osaka, JP;
Jyunichi Nakahashi, Nara, JP;
Kunihiko Hayashi, Osaka, JP;
Satoshi Ikawa, Osaka, JP;
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
In synchronization of a conventional AV system, when a stream as the master stops, a system clock cannot be corrected for synchronization. Since the correction is consistently performed even when an error is small, overhead of correction is large. On the other hand, when an error is large, sharp correction causes a feeling that something wrong. In the present invention, when the stream as the master stops, previously registering the degree of priority regarding the master, consideration of a corrected period or a previous error for the system clock, or transmitting a stream containing information regarding the master can allow for other process to serves as the master. Accordingly, it is possible to provide a method for synchronization with maintaining correction of the system clock. When a corrected error is large, gradual correction or reference can provide a system with normal feeling. Furthermore, when an error of correction is small, omission of correction or reference can provide a system with less overhead.