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. 17, 1995
Filed:
Jun. 27, 1994
Applicant:
Inventors:
James H Stilwell, Mesa, AZ (US);
Joseph H Kao, Mesa, AZ (US);
Assignee:
Motorola, Inc., Schaumburg, IL (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03D / ; H03L / ;
U.S. Cl.
CPC ...
375376 ; 327156 ; 327236 ; 327244 ;
Abstract
A sampling phase detector for a data bit synchronizer produces a constant level in the absence of data bit transitions. Reference voltages are provided and a switch selects between these reference voltages to provide an output which changes only when a data bit is detected and otherwise remains at a constant level. A loop filter operates together with the sampling phase detector to provide the constant voltage output in the absence of data bit transitions.