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:
Nov. 30, 1993
Filed:
May. 09, 1991
Applicant:
Inventor:
Ping Dong, No. Quincy, MA (US);
Assignee:
Codex Corporation, Mansfield, MA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03M / ; H04J / ;
U.S. Cl.
CPC ...
371 42 ; 3701051 ; 371 53 ;
Abstract
A device and method for asynchronous cyclic redundancy checking (CRC) for digital receivers includes utilizing a finite impulse response (FIR) filter, and comparing and gating circuits. The FIR filter may contain a first multiple delay system unit (102) and a first logic gating system (104). The comparing and gating circuit may contain a second multiple delay system unit (106), and a second logic gating system (110). The device and method is implementable, where desired, utilizing a computer program. The invention provides a faster determination of a CRC frame synchronization on a received digital signal.