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:
Feb. 15, 2005
Filed:
Sep. 20, 2001
Applicants:
Ryohei Kuki, Tokyo, JP;
Isao Takigasaki, Chiba-ken, JP;
Inventors:
Ryohei Kuki, Tokyo, JP;
Isao Takigasaki, Chiba-ken, JP;
Assignee:
Texas Instruments Incorporated, Dallas, TX (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G11B005/09 ;
U.S. Cl.
CPC ...
Abstract
Methods and apparatus are disclosed for detecting PR4 equalized Gray codes, providing phase tolerant Gray codes and detection thereof. A Gray code detector is provided, which receives a PR4 equalized Gray code input signal and provides a binary detector output. The detector comprises a plurality of filters providing Euclidean distance values based on the input signal. A logic component selectively provides the detector output based on one or more of the Euclidean distance values from the matched filters, according to one or more criteria, such as the detector mode.