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:
Jul. 11, 2000
Filed:
Jan. 15, 1999
Stephen Michael Hladik, Albany, NY (US);
John Bailey Anderson, Latham, NY (US);
Lockheed Martin Corporation, King of Prussia, PA (US);
Abstract
A decoder of digital data signals for a message sequence of N symbols from a data source, encoded with a tail-biting convolutional code, and for correcting all combinations of up to a preselected number e of bit errors, operates upon the sequentially-received collection of consecutive-encoded tail-biting data symbols and selects an unmerged decision depth LU(e), a forward decision depth LF(e) and then a decoder decision depth L, before executing in a processor of the Viterbi type, which has a decision depth of L trellis levels, a decoding algorithm for a total of (N+LF(e)+LU(e)) trellis stages to produce a decoded data bit output sequence representative of the N transmitted source digital symbols.