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. 13, 2001
Filed:
Oct. 31, 1996
Saburo Tazaki, Matsuyama, JP;
Makoto Hiramatsu, Kawasaki, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
A data reproducing apparatus for reproducing data subjected to convolution by partial response, by using maximum likelihood, includes a memory including a plurality of memory arrays which respectively correspond to plural states that the data can take and each of which has a predetermined number of regions each corresponding to a time point. A detecting device periodically detects, from the data, states before the plural states have been shifted, and a control device causes values respectively representing the detected states before shifting to be sequentially stored in the regions of the memory arrays every time detection is performed by the detection device, causing the values previously stored in the memory arrays to be replaced in accordance with the detected states before shifting, and when all values stored in the regions of the memory arrays corresponding to the same time point match, reproducing the data on the basis of the matching value.