Granted Patent B2

US 12,513,308 · App. 18/414,009 · Granted Dec 30, 2025

Inventor: Minhua Zhou (Plano, TX)

Assignee: TEXAS INSTRUMENTS INCORPORATED

H04N19/167H04N19/103H04N19/117H04N19/172H04N19/174H04N19/176H04N19/61H04N19/70H04N19/82H04N19/12H04N19/124H04N19/157H04N19/436

Abstract

Claims (49)

1 . A system comprising:

a receiver configurable to receive a bit stream including a coded representation of a picture including a coding unit; and

a decoder coupled to the receiver and configurable to:

decode a first flag from a picture parameter set of the bit stream, wherein a value of the first flag indicates whether lossless coding is enabled for the picture;

decode a second flag for the coding unit from the bit stream when the first flag is set;

bypass a transform process for the coding unit when the second flag is set; and

bypass a deblocking filter for the coding unit when the second flag is set.

2 . The system of claim 1 , wherein the decoder is configurable to bypass an inverse quantization process for the coding unit when the second flag is set.

3 . The system of claim 1 , wherein the decoder is configurable to bypass a sample adaptive offset filter process for the coding unit when the second flag is set.

4 . The system of claim 1 ,

wherein the first flag is a first one-bit flag, and

wherein the second flag is a second one-bit flag.

5 . The system of claim 1 , further comprising a light emitting diode display coupled to the decoder and configurable to display the picture.

6 . The system of claim 1 , further comprising a liquid crystal display coupled to the decoder and configurable to display the picture.

7 . A method comprising:

receiving a bit stream including a coded representation of a picture including a coding unit;

decoding a first flag from a parameter set of the bit stream, wherein a value of the first flag indicates whether lossless coding is enabled for the picture;

decoding a second flag for the coding unit from the bit stream when the first flag is set;

bypassing a transform process for the coding unit when the second flag is set; and

bypassing a deblocking filter for the coding unit when the second flag is set.

8 . The method of claim 7 , further comprising bypassing an inverse quantization process for the coding unit when the second flag is set.

9 . The method of claim 7 , further comprising bypassing a sample adaptive offset filter process for the coding unit when the second flag is set.

10 . The method of claim 7 ,

wherein the first flag is a first one-bit flag, and

wherein the second flag is a second one-bit flag.

11 . The method of claim 7 , further comprising displaying the picture via a light emitting diode display.

12 . The method of claim 7 , further comprising displaying the picture via a liquid crystal display.

13 . A system comprising:

a decoder configurable to:

decode a first flag from a parameter set of a bit stream, wherein the bit stream includes a coded representation of a picture including a coding unit, wherein a value of the first flag indicates whether lossless coding is enabled for the picture;

decode a second flag for the coding unit from the bit stream when the first flag is set;

bypass a transform process for the coding unit when the second flag is set; and

bypass a deblocking filter for the coding unit when the second flag is set; and

a display coupled to the decoder and configurable to display the picture including the coding unit.

14 . The system of claim 13 , wherein the decoder is configurable to:

bypass a sample adaptive offset filter process for the coding unit when the second flag is set.

15 . The system of claim 13 , wherein the decoder is configurable to bypass an inverse quantization process for the coding unit when the second flag is set.

16 . The system of claim 13 ,

wherein the first flag is a first one-bit flag, and

wherein the second flag is a second one-bit flag.

17 . The system of claim 1 , further comprising a memory coupled to the decoder,

wherein the decoder is configurable to store unfiltered, reconstructed data for the coding unit to the memory after bypassing the transform process and after bypassing the deblocking filter.

18 . The method of claim 7 , further comprising storing unfiltered, reconstructed data for the coding unit to a memory after bypassing the transform process and after bypassing the deblocking filter.

19 . The system of claim 1 ,

wherein the parameter set is a picture parameter set of the bit stream, and

wherein the decoder is configurable to decode the first flag from the picture parameter set of the bit stream.

20 . The method of claim 7 ,

wherein the parameter set is a picture parameter set of the bit stream, and

wherein decoding the first flag includes decoding the first flag from the picture parameter set of the bit stream.

Continuity (8)

References Cited (43)