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:
Dec. 20, 1994
Filed:
Feb. 10, 1993
Kenji Uehara, Kanagawa, JP;
Sony Corporation, Tokyo, JP;
Abstract
A picture enhancing circuit for a reproduced picture signal includes a field memory and a circuit for writing data into the memory, in which the reproduced picture signal is in the form of sync blocks made up of sync data and picture data. After sync detection is performed, the content of the sync data is reset to zero and written into the memory along with the picture data, and each time the sync data and picture data are read out from the field memory the content of the sync data is updated. The contents of the sync data indicate the number of times that the picture data has been read out from the memory and, thus, its age. This age is used to determine whether the picture data can be used or whether it should be interpolated before use.