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:
Nov. 14, 2006
Filed:
Oct. 02, 2001
Francesco Brianti, San Jose, CA (US);
Marco Demicheli, Binago, IT;
Francesco Brianti, San Jose, CA (US);
Marco Demicheli, Binago, IT;
STMicroelectronics, Inc., Carrollton, TX (US);
Abstract
A partial response Classdetector in a recording and retrieval system and method of operating the detector for correcting the timing error of the detector. The detector includes a sequence table and comparison circuitry for comparing a sequence of data samples that includes previous and subsequent data samples with allowed sequences determined from the sequence table. When the sequence is an allowed sequence then there is high likelihood that data sample is correct, and the timing error for the data sample is determined in the phase error estimator and is corrected for. Otherwise, no correction is made for the timing error. In the preferred embodiment of the invention the coordinates of the sequence table correspond to the data samples, and the slope of the data stream at the data sample is stored in the sequence table. This reduces the size and increases the speed of the phase error estimator since the slope is now provided to it from the sequence table and it does not need determine the slope.