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:
Apr. 09, 1996
Filed:
Nov. 01, 1993
Applicant:
Inventors:
Martin J Izzard, Dallas, TX (US);
David B Scott, Plano, TX (US);
Assignee:
Texas Instruments Incorporated, Dallas, TX (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H03D / ;
U.S. Cl.
CPC ...
375340 ; 375376 ; 324-2 ;
Abstract
A phase detector 10 is disclosed herein. A clock signal CLK (OR I), a marker signal MARK (or Q) and a data signal D are provided. The data signal may comprise a periodic clock signal. Sampler circuitry 50 receives the clock signal CLK, the marker signal MARK and the data signal D and generates a sampled clock signal and a sampled marker signal. Sign modifier circuitry 52 then receives the sampled clock signal and sampled marker signal and generates first and second command signals. Select circuitry 54 receiving these command signals selects a valid command signal based upon the data signal.