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:
Aug. 25, 1998
Filed:
Apr. 29, 1997
Motoyasu Yano, Kanagawa, JP;
Sony Corporation, , JP;
Abstract
The invention provides a parallel to serial data converter wherein the frequency of a basic clock pulse signal to be applied for driving can be reduced to one half with respect to a same data rate and consequently the operation speed required for a circuit in a preceding stage can be reduced, and a bad influence of noise such as, for example, jitters of serial data is eliminated. In the parallel to serial data converter, a clock pulse signal having a frequency f/2 Hz equal to one half the data rate of parallel data which is f bps is used as a basic clock pulse signal, and an inverted pulse signal is produced from the basic clock pulse signal. Then, a rising or falling edge of each pulse of the basic clock pulse signal and a rising or falling edge of each pulse of the inverted pulse signal are detected, and a byte clock pulse signal having a frequency equal to that of the parallel data is produced by logical ORing of such two edge detection outputs and is supplied to a multiplexer.