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:
Feb. 17, 1998
Filed:
Jul. 08, 1996
Applicant:
Inventor:
Junichi Ohki, Tokyo, JP;
Assignee:
Nec Corporation, Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
H04N / ;
U.S. Cl.
CPC ...
348402 ; 348409 ; 348411 ; 348412 ; 348416 ; 348699 ; 348700 ; 348415 ;
Abstract
An efficient coding system for interlaced video sequences with forced refreshing capabilities. An input picture of is divided into two fields, a first and a second field. Certain lines or portions of lines in each respective field are designated for forced refreshing, while the non-designated lines are interframe prediction coded. The designated lines of first field are intrafield prediction coded, while the designated lines of the second field are interfield prediction coded. The selection and implementation of the refreshing of the first and second fields is executed by the controller and switching circuitry of the coding system.