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:
Jul. 20, 1999
Filed:
Sep. 28, 1995
Brian R Nickerson, Aloha, OR (US);
Intel Corporation, Santa Clara, CA (US);
Abstract
An estimate of the number of bits required to encode a block of transform coefficients at a specified quantization (Q) level is generated without performing the actual encoding. The transform coefficients and the specified Q level are used to generate indices to lookup tables that map to the number of bits contributed to the encoded bitstream by each transform coefficient. lookup table may be used to perform non-linear compression to map Q level, unquantized transform coefficients, and zero runs to degrees of quantizer, unquantized coefficient, and zero run. The degrees of quantizer and unquantized coefficient are used to generate an index to another lookup table that maps to a degree of quantized coefficient. The degrees of quantized coefficient and zero run are then used to generate an index to yet another lookup table that maps to the number of bits contributed to the encoded bitstream.