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:
Jan. 06, 2009
Filed:
Aug. 04, 2004
Applicant:
Masaru Miyamoto, Tokyo, JP;
Inventor:
Masaru Miyamoto, Tokyo, JP;
Assignee:
Sony Corporation, , JP;
Primary Examiner:
Int. Cl.
CPC ...
H04N 7/08 (2006.01); H03L 7/06 (2006.01); H03D 3/24 (2006.01);
U.S. Cl.
CPC ...
Abstract
Letting fp be the frequency of a pixel clock, fs be the audio sampling frequency, and fa be the frequency of an audio clock to be reproduced, fa=384fs=(N/M)fp, where N and M are frequency dividing ratios between the pixel clock and the audio clock of a frequency corresponding to the audio sampling frequency. When fs=48 kHz, M=27000 and N=18432, and when fs=44.1 kHz, M=30000 and N=18816. A VCO control unit detects a change in the audio sampling frequency fs from a control voltage Vctl output from a loop filter or from the frequency fo of an output clock of an oscillating unit, and then selects one of at least two VCOs.