CN107071453A

5G,4G,3G,2G

Title

Method for coding video quantization parameter and method for decoding video quantization parameter

Application Number:

CN201710129270

Publication Date:

18-08-2017

Current Assignee:

Family ID:

Application Date:

27-06-2012

Declaring Company:

Publication Country:

US

Priority Date:

28-06-2011

Title

Method for coding video quantization parameter and method for decoding video quantization parameter

Application Number:

CN201710129270

Family ID:

Publication Country:

US

Publication Date:

18-08-2017

Application Date:

27-06-2012

Priority Date:

28-06-2011

Current Assignee:

Declaring Company:

Abstract  Abstract

A video quantization parameter encoder comprises: a prediction unit for generating a predicted quantization parameter from a past reconstructed quantization parameter, and a quantization parameter encoding unit for binary arithmetic encoding a first binary bit indicating whether or not the difference quantization parameter is significant, a sign binary bit indicating whether the difference quantization parameter is positive or negative, and other binary bits indicating an absolute value of the difference quantization parameter, in the case where the difference quantization parameter is significant, wherein the quantization parameter encoding unit performs the binary arithmetic encoding using no context for the sign binary bit, using a first context for the first binary bit and using a context different from the first context for the other binary bits; and the difference quantification parameter range is generated based on the combination of the minimum QP (quantification parameter) and the maximum QP and PQP (predicted quantification parameter).

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Explicitly disclosed patent:openly and comprehensibly describes all details of the invention in the patent document.

Implicitly disclosed patent:does not explicitly state certain aspects of the invention, but still allows for these to be inferred from the information provided.

Basis patent:The core patent in a family, outlining the fundamental invention from which related patents or applications originate.

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