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:
Sep. 05, 2000
Filed:
Sep. 16, 1997
Takashi Shikata, Kawasaki, JP;
Fujitsu Limited, Kawasaki, JP;
Abstract
A DSP 20 receives a serial audio signal DATi synchronized with a external clock .phi.i with the same cycle as that of the internal clock .phi.o and a LR identification signal LRi synchronized in units of words of the serial audio signal DATi, processes the serial audio signal LRi with synchronizing to the internal clock .phi.o and provides a serial audio signal DATo and a LR identification signal LRo. A DSP 20 includes a D flip-flop 11 for detecting and holding the rising edge of the LR identification signal LRi, and a counter 15 for counting the internal clock .phi.o after this detecting to provide the periodic LR identification signal LRo from its inverse output *Q. If signals DATi and LRi are multiple pairs with different frequencies, the DSP further includes selectors for selecting a pair signal from the signals DATi and LRi by a mode writing signal, and non-inverter for delaying the mode writing signal which is provided to clear inputs of the D flip-flop and the counter through an AND gate, to ignore the signal edge different from that of the signal LRi.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile