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:
Apr. 09, 1996
Filed:
Jan. 14, 1994
Yukihiro Yagi, Kyoto, JP;
Masayuki Nakaimuki, Takatsuki, JP;
Shinichi Takahashi, Milton, WA (US);
Jeff M Huard, Puyallup, WA (US);
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
A closed-caption decoder which uses separate clock generators to produce the sampling frequencies for the clock run-in signal and the data portion of the closed-caption signal. Each of the clock generators generates its signal from a common 12 MHz reference clock signal. The timing of the sampling clock signal for the closed-caption data is advanced at the start of the sampling interval to reduce the total timing errors in the sampling of the closed-caption data. Additionally, the decoder can adaptively select one of four edges of the clock run-in signal to use as its synchronizing reference. Furthermore, the decoder may be adapted to recognize more than one start byte pattern.