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. 09, 2001
Filed:
Jan. 26, 1999
Osami Nishimura, Tokyo, JP;
NEC Corporation, Tokyo, JP;
Abstract
A demodulation circuit including error correction based on convolution coding and Viterbi decoding by which the characteristic of error correction is further improved. The demodulation circuit including error correction demodulates a burst data signal received in a satellite communication channel having a low carrier power to noise power ratio using reference bits, the reference bits are removed from the demodulated burst data, the burst data are deinterleaved, from which the reference bits have been removed, in accordance with specifications, and Viterbi decoding decodes convolutionally coded burst data, and weighting includes each value of the demodulated burst data in accordance with the distance from the reference bits of the burst data.