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. 31, 2006
Filed:
Sep. 28, 2001
Philippe Piret, Cesson-Sevigne, FR;
Philippe Piret, Cesson-Sevigne, FR;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
Turbocoding methods use a first RSC coder operating on sequences of binary data, and a second RSC coder operating on binary sequences* each obtained fromby means of a predetermined permutation. These permutations are designed so that, for any sequencerepresented by a polynomial divisible by the recursion polynomial, the associated sequence* is also represented by a polynomial divisible by the recursion polynomial. These permutations are relatively simple to implement, and are applicable to all the data sequenceswhich have a length which is a multiple of the period of the recursion polynomial. In addition, once the transfer functions of the coders and the sequence length have been chosen, it is possible to select, amongst the corresponding permutations, the one which will probably offer the highest minimum distance of the code. Application to devices and apparatus implementing these methods.