Sign coding and decoding
First Claim
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1. A method for sign coding, comprising:
- determining coefficient bits to be sign coded;
executing a sign coding instruction to generate context and decision values for the selected coefficient bits, comprising;
identifying state variables associated with selected coefficient bits and horizontal and vertical neighboring bits of the selected coefficient bits to be processed;
identifying sign values associated with selected coefficient bits and horizontal and vertical neighboring bits of the selected coefficient bits to be processed;
computing horizontal and vertical values in response to the state variables and sign values identified; and
generating context and decision values in response to the coefficient bit values.
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Abstract
Embodiments of the invention provide an instruction that computes the horizontal and vertical values (H,V) based upon the predefined equations. Based upon the horizontal and vertical values (H,V) and the current sign bit being processed at [m,n], the output context and decision pair (CX,D) is determined placed into a destination register.
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Citations
20 Claims
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1. A method for sign coding, comprising:
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determining coefficient bits to be sign coded;
executing a sign coding instruction to generate context and decision values for the selected coefficient bits, comprising;
identifying state variables associated with selected coefficient bits and horizontal and vertical neighboring bits of the selected coefficient bits to be processed;
identifying sign values associated with selected coefficient bits and horizontal and vertical neighboring bits of the selected coefficient bits to be processed;
computing horizontal and vertical values in response to the state variables and sign values identified; and
generating context and decision values in response to the coefficient bit values. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A system, comprising:
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a memory;
a processor to execute an instruction to a sign coding instruction to generate context and decision values for the selected coefficient bits, comprising;
identifying state variables associated with selected coefficient bits and horizontal and vertical neighboring bits of the selected coefficient bits to be processed;
identifying sign values associated with selected coefficient bits and horizontal and vertical neighboring bits of the selected coefficient bits to be processed;
computing horizontal and vertical values in response to the state variables and sign values identified; and
generating context and decision values in response to the coefficient bit values - View Dependent Claims (9, 10, 11, 12, 13, 14)
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15. A machine readable medium having stored therein a plurality of machine readable instructions executable by a processor to determine sign coding, comprising:
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instructions to determine coefficient bits to be sign coded;
instructions to identify state variables associated with selected coefficient bits and horizontal and vertical neighboring bits of the selected coefficient bits to be processed;
instructions to identify sign values associated with selected coefficient bits and horizontal and vertical neighboring bits of the selected coefficient bits to be processed;
instructions to compute horizontal and vertical values in response to the state variables and sign values identified; and
instructions to generate context and decision values in response to the coefficient bit values - View Dependent Claims (16, 17, 18, 19, 20)
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Specification