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:
Oct. 24, 1989
Filed:
Nov. 30, 1987
Applicant:
Inventor:
Martin W Sanner, San Jose, CA (US);
Assignee:
Tandem Computers Incorporated, Cupertino, CA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04L / ;
U.S. Cl.
CPC ...
375106 ; 375108 ; 328 63 ;
Abstract
A method, and apparatus implementing that method, for monitoring a synchronization circuit to ensure proper operation thereof. The synchronization circuit is of the type that receives asynchronously occurring input pulses to produce therefrom representations of the received input pulses, having state transitions synchronized to the state transitions of a periodic clock signal. The invention also receives the input pulses and the synchronized representation of those pulses, to ensure that for every input pulse there is provided a synchronized pulse by the synchronization circuit.