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.

Date of Patent:
Oct. 08, 1991

Filed:

Jan. 08, 1990
Applicant:
Inventors:

Steve Y Sakalian, Garland, TX (US);

Jeffrey L Zwiebel, Dallas, TX (US);

Assignee:

Other;

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04L / ; H04J / ;
U.S. Cl.
CPC ...
375106 ; 375108 ; 375107 ; 3701051 ;
Abstract

A frame synchronization circuit is illustrated, which uses an algorithm of reverting to an initial state of selecting the next logic zero data bit in a data bit stream for the potential bit position to be used as a framing bit, and returning to reinitialization if any of the next M-bits in that bit position do not follow a prescribed framing pattern. Once synchronization is established, the detection of three out of five framing bits being in error will cause the circuit to return to an intermediate state in the framing process, whereby any further errors in the next X number of bits will cause reinitialization, but the lack of any further errors in the next X-bits will allow the circuit to confirm that its original bit position choice as framing bit was correct. This allows the circuit to continue operation with the assurance that it is correctly synchronized with the data, and without interrupting data flow for the comparatively long time it takes to synchronize from 'scratch'.


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Sakalian, Steve. (1991). Adaptive frame resynchronizer apparatus (U.S. Patent No. 5056119). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5056119

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