Video decoder with multi-format vector processor and methods for use therewith

Patent metadata

Field	Value
Publication number	US-9503741-B2
Application number	US-201113162265-A
Country	US
Kind code	B2
Filing date	Jun 16, 2011
Priority date	Jun 8, 2011
Publication date	Nov 22, 2016
Grant date	Nov 22, 2016

Abstract

A multi-format video decoder includes an entropy decoding device that generates entropy decoded (EDC) data from an encoded video signal. A multi-format video decoding device includes a memory module that stores a plurality of operational instructions including at least one matrix multiply instruction that includes matrix input configuration data. A plurality of vector processor units generate a decoded video signal from the EDC data, wherein at least one of the plurality of vector processors include a matrix multiplier that generates output data based on a multiplication of first input data and second input data in accordance with the matrix input configuration data, wherein the matrix input configuration data indicates the dimensionality of the first input data and the second input data.

First claim

What is claimed is:

1. A video decoder comprising:
an entropy decoding device that generates entropy decoded (EDC) data from an encoded video signal;
a video decoding device, coupled to the entropy decoding device, that includes:
a memory module that stores a plurality of operational instructions including at least one matrix multiply instruction that includes matrix input configuration data; and
a plurality of vector processor units, coupled to the memory module, for generating a decoded video signal from the EDC data based on a parallel processing of vector operations, wherein at least one of the plurality of vector processor units includes:
a matrix multiplier that generates output data based on a multiplication of first input data and second input data in accordance with the matrix input configuration data, wherein the matrix input configuration data indicates a dimensionality of the first input data and the second input data.

2. The video decoder of claim 1 wherein the first input data is formatted as a 1×8 matrix when the matrix input configuration data has a first value.

3. The video decoder of claim 2 wherein the first input data is formatted as an 8×8 matrix when the matrix input configuration data has a second value.

4. The video decoder of claim 1 wherein the second input data is formatted as a 1×8 matrix when the matrix input configuration data has a first value.

5. The video decoder of claim 4 wherein the second input data is formatted as an 8×8 matrix when the matrix input configuration data has a second value.

6. The video decoder of claim 1 wherein the first input data is formatted as a 4×4 matrix second input data is formatted as a 4×4 matrix when the matrix input configuration data has a first value.

7. The video decoder of claim 1 wherein the encoded video signal is encoded in accordance with a VP8 coding standard.

8. A method comprising:
generating entropy decoded (EDC) data from an encoded video signal; and
generating a decoded video signal from the EDC data, via a plurality of vector processor units that each operated based on a parallel processing of vector operations and in response to a plurality of operational instructions including at least one matrix multiply instruction that includes matrix input configuration data, wherein at least one of the plurality of vector processor units operates by:
generating output data based on a multiplication of first input data and second input data in accordance with the matrix input configuration data, wherein the matrix input configuration data indicates a dimensionality of the first input data and the second input data.

9. The method of claim 8 wherein the first input data is formatted as a 1×8 matrix when the matrix input configuration data has a first value.

10. The method of claim 9 wherein the first input data is formatted as an 8×8 matrix when the matrix input configuration data has a second value.

11. The method of claim 8 wherein the second input data is formatted as a 1×8 matrix when the matrix input configuration data has a first value.

12. The method of claim 11 wherein the second input data is formatted as an 8×8 matrix when the matrix input configuration data has a second value.

13. The method of claim 8 wherein the first input data is formatted as a 4×4 matrix second input data is formatted as a 4×4 matrix when the matrix input configuration data has a first value.

14. The method of claim 8 wherein the encoded video signal is encoded in accordance with a VP8 coding standard.

Assignees

• Yang Kai
• Liu Dong
• Hong Edward
• Wang Hongri (Grace)
• Vixs Systems Inc

Inventors

• Yang Kai
• Liu Dong
• Hong Edward
• Wang Hongri (Grace)

Classifications

• H04N19/30

  using hierarchical techniques, e.g. scalability (H04N19/63 takes precedence) · CPC title

• H04N19/42

  characterised by implementation details or hardware specially adapted for video compression or decompression, e.g. dedicated software implementation (H04N19/635 takes precedence) · CPC title

• H04N19/12

  Selection from among a plurality of transforms or standards, e.g. selection between discrete cosine transform [DCT] and sub-band transform or selection between H.263 and H.264 · CPC title

• H04N19/44

  Decoders specially adapted therefor, e.g. video decoders which are asymmetric with respect to the encoder · CPC title

• H04N19/40 Primary

  using video transcoding, i.e. partial or full decoding of a coded input stream followed by re-encoding of the decoded output stream · CPC title