Programmable quantization dead zone and threshold for standard-based H.264 and/or VC1 video encoding
First Claim
1. An apparatus comprising:
- an encoder circuit configured to generate a plurality of coefficient values in response to a video stream and a number of quantized values;
a quantizer circuit configured to generate said number of quantized values in response to said coefficient values, two or more quantization dead zones and two or more offsets; and
a control circuit configured to set said two or more quantization dead zones and said two or more offsets to different values, wherein said two or more quantization dead zones and said two or more offsets are independently programmable.
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Abstract
A video encoder comprising an encoder circuit, a quantizer circuit and a control circuit. The encoder circuit may be configured to generate a number of coefficient values in response to a video stream and a number of quantized values. The quantizer circuit may be configured to generate the number of quantized values in response to the coefficient values, two or more quantization dead zones and two or more offsets. The control circuit may be configured to set the two or more quantization dead zones and the two or more offsets to different values. The two or more quantization dead zones and the two or more offsets are independently programmable.
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Citations
20 Claims
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1. An apparatus comprising:
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an encoder circuit configured to generate a plurality of coefficient values in response to a video stream and a number of quantized values;
a quantizer circuit configured to generate said number of quantized values in response to said coefficient values, two or more quantization dead zones and two or more offsets; and
a control circuit configured to set said two or more quantization dead zones and said two or more offsets to different values, wherein said two or more quantization dead zones and said two or more offsets are independently programmable. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A video encoder comprising:
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means for generating a plurality of coefficient values in response to a video stream and a number of quantized values;
means for generating said number of quantized values in response to said coefficient values, two or more quantization dead zones and two or more offsets; and
means for setting said two or more quantization dead zones and said two or more offsets to different values, wherein said two or more quantization dead zones and said two or more offsets are independently programmable.
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11. A method for encoding video comprising:
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generating a plurality of coefficient values in response to a video stream and a number of quantized values;
generating said number of quantized values in response to said coefficient values, two or more quantization dead zones and two or more offsets; and
setting said two or more quantization dead zones and said two or more offsets to different values, wherein said two or more quantization dead zones and said two or more offsets are independently programmable. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification