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:
Jan. 07, 1997
Filed:
Apr. 10, 1995
Gerardus C Lokhoff, Eindhoven, NL;
U.S. Philips Corporation, New York, NY (US);
Abstract
Digital data is encoded in accordance with an error protection product code into C1 codewords and C2 codewords, and the codewords are stored on a plurality of parallel recording tracks of a record carrier. The code symbols of any particular C1 codeword are assigned to a segment of a single storage track. The number of code symbols in a C2 codeword are a multiple of the number of tracks, and are cyclically assigned to segments of all tracks and cross intersegment boundaries, the physical spacing between adjoining symbols of a C2 codeword being substantially uniform in both coordinate directions. The storage requirements of the coding apparatus are reduced if the number of symbols in each C2 codeword is an integral multiple of the number of tracks. The positions on the tracks of the symbols of any codeword have a 1:1 correspondence with the addresses of such symbols in the RAM for both the encoder and the decoder.