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:
Aug. 07, 2018
Filed:
Apr. 22, 2014
Nec Corporation, Minato-ku, Tokyo, JP;
NEC CORPORATION, Tokyo, JP;
Abstract
A quantization unit for quantizing orthogonal transform coefficients to calculate a coefficient level: calculates the number of value information bits of a significant coefficient level of an orthogonal transform coefficient to be processed in an image block; monitors coefficient levels output from the quantization unit in the image block from beginning to the N-th prior to the target in transmission order, and updates a state variable indicating whether or not at least one of monitored coefficient levels is significant; calculates the number of position information bits of the significant coefficient level of the orthogonal transform coefficient to be processed, based on a position of the orthogonal transform coefficient to be processed and the state variable; and sets the significant coefficient level to 0 in the case where the number of value information bits and the number of position information bits satisfy a predetermined condition.