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:
May. 05, 2009
Filed:
Aug. 21, 2003
Masaru Miyamoto, Tokyo, JP;
Masaru Miyamoto, Tokyo, JP;
Sony Corporation, Tokyo, JP;
Abstract
An AV signal transmission/reception apparatus and a digital signal transmission system and method. A reception apparatus and method that can reproduce an audio reference clock of a plurality of different frequencies from a video reference clock. A pixel clock is divided by a divider into a signal of a constant frequency for phase comparison by a phase comparator. A sample frequency (Fs) decoder determines division ratio information based on Fs information representing the frequency of an audio clock transmitted from a transmission unit. The division ratio information is supplied to a first variable divider and a second variable divider. As a result, even if the frequency of the audio clock changes, the oscillation frequency of the a VCO unit can be kept constant, and the second variable divider can output a signal of a constant frequency for keeping constant the frequency of the signal transmitted to the phase comparator.