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:
Aug. 05, 2003
Filed:
Jul. 27, 2000
Hiroaki Ueno, Kawasaki, JP;
Fujitsu Limited, Kawasaki, JP;
Abstract
An error propagation control method and a recording/reproducing device which uses the method in a system which makes use of MDFE are disclosed. In the error propagation control method in accordance with multi-level decision feedback equalization in which the input to the detector is fed back to the input side via the feedback filter and the difference between the input signal and the feedback signal is input to the detector, the error propagation state is detected based on the output of the detector. Based on the error propagation detection result, a predetermined offset is added to the slice level of the detector, DC offset is added to the DC level of the input signal of the detector, or a sign of the tap of the feedback filter is reversed.