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. 21, 2002
Filed:
Mar. 16, 1998
Toshiya Takahashi, Ibarakishi, JP;
Kenichi Takahashi, Kyotoshi, JP;
Abstract
A hierarchical coding apparatus comprising first and second compressive coding units for subjecting high- and low-resolution digital image signals to hierarchical coding to generate high- and low-resolution coded data, and a resolution conversion circuit for subjecting a portion of low-resolution decoded image signal obtained by decoding the low-resolution coded data to resolution conversion, wherein only the resolution converted image signal is used as a reference signal for a low resolution side in coding the high-resolution digital image signal, thereby making the reduction of compression efficiency of image data, which is transmitted or stored, less, and simplifying the configuration of the hierarchical coding apparatus.