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:
May. 02, 1989
Filed:
Feb. 18, 1988
Tooru Yasuda, Tokyo, JP;
NEC Corporation, , JP;
Abstract
A system for decoding a coded inter-frame prediction signal comprises a separating circuit (4) for separating the coded signal into a coded prediction error signal (b.sub.k) and a remainder (r.sub.k). A decoding circuit (5, 6, 7) generates a decoded prediction error signal x.sub.k. A first delay circuit (8) provides the decoded signal with a first delay to produce a first delayed signal. An error detecting circuit (11, 13) detects errors in the decoded signal (x.sub.k) and generates an error detection signal which has a high or low level, depending on whether an error has been detected for a given frame. A second delay circuit (10) provides the output of the decoding system with a second delay to produce a second delayed signal. A selecting circuit (14, 9) receives the error detection signal and the first and second delayed signals and selects one of the latter to produce the output of the decoding system.