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. 19, 2006
Filed:
Dec. 30, 1999
Takahiro Kimoto, Tokyo, JP;
Takahiro Kimoto, Tokyo, JP;
NEC Corporation, Tokyo, JP;
Abstract
Deterioration of picture quality is prevented even in a transmission environment in which errors easily occur. A block significance determining section produces block significance for each block as an encoding unit according to predetermined evaluation indices. A map generator generates a refresh map signal representing priority of refresh processing for each block according to the block significance. An adaptive refresh signal generator generates a refresh signal by referring to the refresh priority indicated by the refresh map signal and an allowed block count of blocks for the refresh processing. A moving picture encoding section conducts an intra-frame encoding operation for a block specified by the refresh signal and appropriately selects and executes an intra-frame encoding operation or inter-frame forecast encoding operation for blocks not specified by the refresh signal.