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:
Jul. 13, 1993
Filed:
Oct. 15, 1991
Achim Herzberger, Nurnberg, DE;
U.S. Philips Corporation, New York, NY (US);
Abstract
A synchronizing pulse is produced upon detection of a frame codeword or frame-structured binary signal consisting of a first word repeated a plurality of times and at least one second word. A demultiplexer divides the incoming signal into n words which are advanced in parallel through n shift registers of a first memory matrix, followed by the next n words, and so on. A decoder determines whether the first word is stored in each register, and increments a respective one of n counters when the word is found. An addressing logic transforms the output into a binary number which controls a multiplexer which, in turn controls arrangement of bits in a second memory matrix. A synchronizing pulse is produced when the second memory matrix contains predetermined bits of the first and second word.