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:
Jul. 10, 2012
Filed:
Mar. 18, 2008
Tsugio Takahashi, Tokyo, JP;
Tsugio Takahashi, Tokyo, JP;
NEC Corporation, Tokyo, JP;
Abstract
A frame synchronization device and a frame synchronization method capable of preventing a malfunction when a frame is synchronized by using a frame synchronization pattern varying sequentially is presented. A bit serial signal at every frame is transmitted sequentially in a shift register composed of flip-flop circuits. When a bit in each of the stages is detected to be coincided with a corresponding bit in a frame synchronization pattern by coincidence circuits, existence of a synchronized frame is determined. Each bit in the synchronization pattern is also inputted into an all-zero detection circuit. If an all-zero state is detected, a first AND circuit does not output a synchronization pattern detecting signal even with a case where coincidence is detected from the coincidence circuits.