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:
Sep. 09, 1997
Filed:
Jun. 29, 1994
Noriyoshi Sonetaka, Tokyo, JP;
NEC Corporation, , JP;
Abstract
A digital communication system and method, in which a convolutional coding of input data sequence Bm (m=1, 2, 3, . . . ) is carried out, and first coded data X1 of first coded data sequence Xm are deleted to output second coded data sequence Xn onto a transmission line. First receive data X1' are uniquely determined on the basis of receive data sequence Xn' transmitted via the transmission line, corresponding to the second coded data sequence Xn, and the last decoded data B0' of a data sequence which is previously received and decoded, to produce data sequence Xm' which are decoded by a maximum likelihood coding to obtain a decoded data sequence. Hence, a fixed amount of information of the data can be always compressed to transmit the compressed data even in a low line quality environment.