DETAILED ACTION
The present Office action is in response to the application filing on 18 FEBRUARY 2025.
Notice of Pre-AIA or AIA Status
The present application, filed on or after March 16, 2013, is being examined under the first inventor to file provisions of the AIA .
Information Disclosure Statement
The Information Disclosure Statement (IDS) submitted on 02/18/2025 is in compliance with the provisions of 37 CFR 1.97. Accordingly, the Information Disclosure Statement is being considered by the Examiner.
Double Patenting
The nonstatutory double patenting rejection is based on a judicially created doctrine grounded in public policy (a policy reflected in the statute) so as to prevent the unjustified or improper timewise extension of the “right to exclude” granted by a patent and to prevent possible harassment by multiple assignees. A nonstatutory double patenting rejection is appropriate where the conflicting claims are not identical, but at least one examined application claim is not patentably distinct from the reference claim(s) because the examined application claim is either anticipated by, or would have been obvious over, the reference claim(s). See, e.g., In re Berg, 140 F.3d 1428, 46 USPQ2d 1226 (Fed. Cir. 1998); In re Goodman, 11 F.3d 1046, 29 USPQ2d 2010 (Fed. Cir. 1993); In re Longi, 759 F.2d 887, 225 USPQ 645 (Fed. Cir. 1985); In re Van Ornum, 686 F.2d 937, 214 USPQ 761 (CCPA 1982); In re Vogel, 422 F.2d 438, 164 USPQ 619 (CCPA 1970); In re Thorington, 418 F.2d 528, 163 USPQ 644 (CCPA 1969).
A timely filed terminal disclaimer in compliance with 37 CFR 1.321(c) or 1.321(d) may be used to overcome an actual or provisional rejection based on nonstatutory double patenting provided the reference application or patent either is shown to be commonly owned with the examined application, or claims an invention made as a result of activities undertaken within the scope of a joint research agreement. See MPEP § 717.02 for applications subject to examination under the first inventor to file provisions of the AIA as explained in MPEP § 2159. See MPEP § 2146 et seq. for applications not subject to examination under the first inventor to file provisions of the AIA . A terminal disclaimer must be signed in compliance with 37 CFR 1.321(b).
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Claims 1-11 are rejected on the ground of nonstatutory double patenting as being unpatentable over claims 1-14 of U.S. Patent No. 12,262,017 (hereinafter “Patent ‘017”) in view of U.S. Publication No. 2022/0141465 A1 (hereinafter “Ko”).
Regarding claim 1, Patent ‘017 discloses every limitation of claim 1, except for the following decoding a second chroma syntax element indicating a differential modulation direction applied to the chroma block among a plurality of differential modulation directions including a horizontal direction and a vertical direction, in response to the first chroma syntax element indicating that the differential modulation has been applied to the chroma block.
However, Ko teaches decoding a second chroma syntax element indicating a differential modulation direction applied to the chroma block among a plurality of differential modulation directions including a horizontal direction and a vertical direction, in response to the first chroma syntax element indicating that the differential modulation has been applied to the chroma block ([0400], “When the value of intra_bdpcm_chroma_flag is 1, the decoder may parse syntax related to chroma BDPCM. In this case, the syntax related to chroma BDPCM may include intra_bdpcm_chroma_dir_flag. intra_bdpcm_chroma_dir_flag may be a flag indicating a prediction direction of chroma BDPCM. For example, intra_bdpcm_chroma_dir_flag may indicate whether the prediction direction of chroma BDPCM is horizontal or vertical. sps_bdpcm_chroma_enable_flag may be a syntax element signaled at a higher level indicating whether chroma BDPCM is usable”).
Before the effective filing date of the claimed invention, it would have been obvious to a person having ordinary skill in the art to have signaled a direction for applying differential modulation, as taught by Ko ([0400]), in Patent ‘017. One would have been motivated to modify Patent ‘017, by incorporating Ko’s invention, to increase coding efficiency (Ko: [0004-0006]).
Regarding claims 2-11, each limitation is taught by Patent ‘017 in combination with Ko, for the same rationale of claim 1. The following tables exemplify the overlapping subject matter between the instant application and Patent ‘017.
Instant Application
Patent ‘017
Claim 1. A method for decoding a bitstream encoded from a video sequence comprising a plurality of pictures, the method comprising:
Claim 1. A method for decoding a bitstream encoded from a video sequence comprising a plurality of pictures, the method comprising:
decoding, from a sequence parameter set of the bitstream, information on a chroma sampling format and high level syntax elements related to differential modulation for residual signals,
decoding, from a sequence parameter set of the bitstream, information on a chroma sampling format and high level syntax elements related to differential modulation for residual signals,
wherein the information on the chroma sampling format indicates one of a plurality of chroma sampling formats including 4:4:4, 4:2:2, or 4:2:0, and
wherein the information on the chroma sampling format indicates one of a plurality of chroma sampling formats including 4:4:4, 4:2:2, or 4:2:0, and
wherein the high level syntax elements comprise a single common control flag indicating whether the differential modulation is permitted for the residual signals of each of luma and chroma components of the video sequence and information on a maximum block size for which the differential modulation is permitted;
wherein the high level syntax elements comprise a single common control flag indicating whether the differential modulation is permitted for the residual signals of each of luma and chroma components of the video sequence and information on a maximum block size for which the differential modulation is permitted;
decoding a first chroma syntax element indicating whether the differential modulation has been applied to a chroma block corresponding to a first block to be currently decoded, when the first block satisfies conditions defined by the information on the chroma sampling format and the high level syntax elements;
decoding a first chroma syntax element indicating whether the differential modulation has been applied to a chroma block corresponding to a first block to be currently decoded, when the first block satisfies conditions defined by the information on the chroma sampling format and the high level syntax elements;
decoding a second chroma syntax element indicating a differential modulation direction applied to the chroma block among a plurality of differential modulation directions including a horizontal direction and a vertical direction, in response to the first chroma syntax element indicating that the differential modulation has been applied to the chroma block;
decoding a second chroma syntax element indicating a differential modulation direction applied to the chroma block in response to the first chroma syntax element indicating that the differential modulation has been applied to the chroma block;
determining a differential-modulated residual block for the chroma block from the bitstream;
determining a differential-modulated residual block for the chroma block from the bitstream;
determining quantized residual values by differential-demodulating the differential- modulated residual block in the differential modulation direction indicated by the second chroma syntax element;
determining quantized residual values by differential-demodulating the differential- modulated residual block in the differential modulation direction indicated by the second chroma syntax element;
inversely quantizing the quantized residual values for the chroma block;
inversely quantizing the quantized residual values for the chroma block;
generating predicted values for the chroma block; and
generating predicted values for the chroma block; and
reconstructing the chroma block corresponding to the first block based on the inversely quantized residual values and the predicted values,
reconstructing the chroma block corresponding to the first block based on the inversely quantized residual values and the predicted values,
wherein the conditions defined by the information on the chroma sampling format and the high level syntax elements are satisfied when:
wherein the conditions defined by the information on the chroma sampling format and the high level syntax elements are satisfied when:
(1) the single common control flag indicates that the differential modulation is permitted for the video sequence,
(1) the single common control flag indicates that the differential modulation is permitted for the video sequence,
(2) a value obtained by dividing a width of the first block by a horizontal scaling factor determined by the chroma sampling format that the information on the chroma sampling format indicates among the plurality of chroma sampling formats is smaller than or equal to the maximum block size, and
(2) a value obtained by dividing a width of the first block by a horizontal scaling factor determined by the chroma sampling format that the information on the chroma sampling format indicates among the plurality of chroma sampling formats is smaller than or equal to the maximum block size, and
(3) a value obtained by dividing a height of the first block by a vertical scaling factor determined by the chroma sampling format indicated by the information on the chroma sampling format is smaller than or equal to the maximum block size.
(3) a value obtained by dividing a height of the first block by a vertical scaling factor determined by the chroma sampling format indicated by the information on the chroma sampling format is smaller than or equal to the maximum block size.
Instant Application
Patent ‘017
Claim 2. The method of claim 1, wherein generating the predicted values for the chroma block comprises:
Claim 2. The method of claim 1, wherein generating the predicted values for the chroma block comprises:
setting, as an intra prediction mode for the chroma block, a prediction mode having a direction identical with the differential modulation direction indicated by the second chroma syntax element among a vertical prediction mode and a horizontal prediction mode; and
setting, as an intra prediction mode for the chroma block, a prediction mode having a direction identical with the differential modulation direction indicated by the second chroma syntax element among a vertical prediction mode and a horizontal prediction mode; and
generating the predicted values for the chroma block based on the intra prediction mode for the chroma block.
generating the predicted values for the chroma block based on the intra prediction mode for the chroma block.
Instant Application
Patent ‘017
Claim 3. The method of claim 1, wherein generating the prediction values for the chroma block comprises: generating the prediction values for the chroma block by performing intra prediction on the chroma block by using samples not filtered from edge samples of a top or left block of the chroma block.
Claim 3. The method of claim 1, wherein generating the prediction values for the chroma block comprises: generating the prediction values for the chroma block by performing intra prediction on the chroma block by using samples not filtered from edge samples of a top or left block of the chroma block.
Claims 1-11 are provisionally rejected on the ground of nonstatutory double patenting as being unpatentable over claims 1-11 of copending Application No. 19/056,072 (reference application) (hereinafter “Application ‘072”) in view of U.S. Publication No. 2022/0141465 A1 (hereinafter “Ko”).
Regarding claim 1, Application ‘072 discloses every limitation of claim 1, except for the following decoding a second chroma syntax element indicating a differential modulation direction applied to the chroma block among a plurality of differential modulation directions including a horizontal direction and a vertical direction, in response to the first chroma syntax element indicating that the differential modulation has been applied to the chroma block.
However, Ko teaches decoding a second chroma syntax element indicating a differential modulation direction applied to the chroma block among a plurality of differential modulation directions including a horizontal direction and a vertical direction, in response to the first chroma syntax element indicating that the differential modulation has been applied to the chroma block ([0400], “When the value of intra_bdpcm_chroma_flag is 1, the decoder may parse syntax related to chroma BDPCM. In this case, the syntax related to chroma BDPCM may include intra_bdpcm_chroma_dir_flag. intra_bdpcm_chroma_dir_flag may be a flag indicating a prediction direction of chroma BDPCM. For example, intra_bdpcm_chroma_dir_flag may indicate whether the prediction direction of chroma BDPCM is horizontal or vertical. sps_bdpcm_chroma_enable_flag may be a syntax element signaled at a higher level indicating whether chroma BDPCM is usable”).
Before the effective filing date of the claimed invention, it would have been obvious to a person having ordinary skill in the art to have signaled a direction for applying differential modulation, as taught by Ko ([0400]), in Application ‘072. One would have been motivated to modify Application ‘072, by incorporating Ko’s invention, to increase coding efficiency (Ko: [0004-0006]).
Regarding claims 2-11, each limitation is taught by Application ‘072 in combination with Ko, for the same rationale of claim 1. The following tables exemplify the overlapping subject matter between the instant application and Application ‘072.
Instant Application
Application ‘072
Claim 1. A method for decoding a bitstream encoded from a video sequence comprising a plurality of pictures, the method comprising:
Claim 1. An apparatus for decoding a bitstream encoded from a video sequence comprising a plurality of pictures, the apparatus comprising at least one processor configured to:
decoding, from a sequence parameter set of the bitstream, information on a chroma sampling format and high level syntax elements related to differential modulation for residual signals,
decode, from a sequence parameter set of the bitstream, information on a chroma sampling format and high level syntax elements related to differential modulation for residual signals,
wherein the information on the chroma sampling format indicates one of a plurality of chroma sampling formats including 4:4:4, 4:2:2, or 4:2:0, and
wherein the information on the chroma sampling format indicates one of a plurality of chroma sampling formats including 4:4:4, 4:2:2, or 4:2:0, and
wherein the high level syntax elements comprise a single common control flag indicating whether the differential modulation is permitted for the residual signals of each of luma and chroma components of the video sequence and information on a maximum block size for which the differential modulation is permitted;
wherein the high level syntax elements comprise a single common control flag indicating whether the differential modulation is permitted for the residual signals of each of luma and chroma components of the video sequence and information on a maximum block size for which the differential modulation is permitted;
decoding a first chroma syntax element indicating whether the differential modulation has been applied to a chroma block corresponding to a first block to be currently decoded, when the first block satisfies conditions defined by the information on the chroma sampling format and the high level syntax elements;
decode a first chroma syntax element indicating whether the differential modulation has been applied to a chroma block corresponding to a first block to be currently decoded, when the first block satisfies conditions defined by the information on the chroma sampling format and the high level syntax elements;
decoding a second chroma syntax element indicating a differential modulation direction applied to the chroma block among a plurality of differential modulation directions including a horizontal direction and a vertical direction, in response to the first chroma syntax element indicating that the differential modulation has been applied to the chroma block;
decode a second chroma syntax element indicating a differential modulation direction applied to the chroma block in response to the first chroma syntax element indicating that the differential modulation has been applied to the chroma block;
determining a differential-modulated residual block for the chroma block from the bitstream;
determine a differential-modulated residual block for the chroma block from the bitstream;
determining quantized residual values by differential-demodulating the differential- modulated residual block in the differential modulation direction indicated by the second chroma syntax element;
determine quantized residual values by differential-demodulating the differential- modulated residual block in the differential modulation direction indicated by the second chroma syntax element;
inversely quantizing the quantized residual values for the chroma block;
inversely quantize the quantized residual values for the chroma block;
generating predicted values for the chroma block; and
generate predicted values for the chroma block; and
reconstructing the chroma block corresponding to the first block based on the inversely quantized residual values and the predicted values,
reconstruct the chroma block corresponding to the first block based on the inversely quantized residual values and the predicted values,
wherein the conditions defined by the information on the chroma sampling format and the high level syntax elements are satisfied when:
wherein the conditions defined by the information on the chroma sampling format and the high level syntax elements are satisfied when:
(1) the single common control flag indicates that the differential modulation is permitted for the video sequence,
(1) the single common control flag indicates that the differential modulation is permitted for the video sequence,
(2) a value obtained by dividing a width of the first block by a horizontal scaling factor determined by the chroma sampling format that the information on the chroma sampling format indicates among the plurality of chroma sampling formats is smaller than or equal to the maximum block size, and
(2) a value obtained by dividing a width of the first block by a horizontal scaling factor determined by the chroma sampling format that the information on the chroma sampling format indicates among the plurality of chroma sampling formats is smaller than or equal to the maximum block size, and
(3) a value obtained by dividing a height of the first block by a vertical scaling factor determined by the chroma sampling format indicated by the information on the chroma sampling format is smaller than or equal to the maximum block size.
(3) a value obtained by dividing a height of the first block by a vertical scaling factor determined by the chroma sampling format indicated by the information on the chroma sampling format is smaller than or equal to the maximum block size.
Instant Application
Application ‘072
Claim 2. The method of claim 1, wherein generating the predicted values for the chroma block comprises:
Claim 2. The apparatus of claim 1, wherein the processor is configured to generate the predicted values for the chroma block by performing a process comprising:
setting, as an intra prediction mode for the chroma block, a prediction mode having a direction identical with the differential modulation direction indicated by the second chroma syntax element among a vertical prediction mode and a horizontal prediction mode; and
setting, as an intra prediction mode for the chroma block, a prediction mode having a direction identical with the differential modulation direction indicated by the second chroma syntax element among a vertical prediction mode and a horizontal prediction mode; and
generating the predicted values for the chroma block based on the intra prediction mode for the chroma block.
generating the predicted values for the chroma block based on the intra prediction mode for the chroma block.
Instant Application
Application ‘072
Claim 3. The method of claim 1, wherein generating the prediction values for the chroma block comprises: generating the prediction values for the chroma block by performing intra prediction on the chroma block by using samples not filtered from edge samples of a top or left block of the chroma block.
Claim 3. The apparatus of claim 1, wherein the processor is configured to generate the prediction values for the chroma block by performing intra prediction on the chroma block by using samples not filtered from edge samples of a top or left block of the chroma block.
Claims 1-11 are provisionally rejected on the ground of nonstatutory double patenting as being unpatentable over claims 1-11 of copending Application No. 19/056,099 (reference application) (hereinafter “Application ‘099”).
Regarding claims 1-11, each claim differs only in statutory category from the respective claim in Application ‘099. Therefore, the instant application is entirely anticipated by Application ‘099.
This is a provisional nonstatutory double patenting rejection. The following tables exemplify the overlapping subject matter between the instant application and Application ‘099.
Instant Application
Application ‘099
Claim 1. A method for decoding a bitstream encoded from a video sequence comprising a plurality of pictures, the method comprising:
Claim 1. An apparatus for decoding a bitstream encoded from a video sequence comprising a plurality of pictures, the apparatus comprising at least one processor configured to:
decoding, from a sequence parameter set of the bitstream, information on a chroma sampling format and high level syntax elements related to differential modulation for residual signals,
decode, from a sequence parameter set of the bitstream, information on a chroma sampling format and high level syntax elements related to differential modulation for residual signals,
wherein the information on the chroma sampling format indicates one of a plurality of chroma sampling formats including 4:4:4, 4:2:2, or 4:2:0, and
wherein the information on the chroma sampling format indicates one of a plurality of chroma sampling formats including 4:4:4, 4:2:2, or 4:2:0, and
wherein the high level syntax elements comprise a single common control flag indicating whether the differential modulation is permitted for the residual signals of each of luma and chroma components of the video sequence and information on a maximum block size for which the differential modulation is permitted;
wherein the high level syntax elements comprise a single common control flag indicating whether the differential modulation is permitted for the residual signals of each of luma and chroma components of the video sequence and information on a maximum block size for which the differential modulation is permitted;
decoding a first chroma syntax element indicating whether the differential modulation has been applied to a chroma block corresponding to a first block to be currently decoded, when the first block satisfies conditions defined by the information on the chroma sampling format and the high level syntax elements;
decode a first chroma syntax element indicating whether the differential modulation has been applied to a chroma block corresponding to a first block to be currently decoded, when the first block satisfies conditions defined by the information on the chroma sampling format and the high level syntax elements;
decoding a second chroma syntax element indicating a differential modulation direction applied to the chroma block among a plurality of differential modulation directions including a horizontal direction and a vertical direction, in response to the first chroma syntax element indicating that the differential modulation has been applied to the chroma block;
decode a second chroma syntax element indicating a differential modulation direction applied to the chroma block among a plurality of differential modulation directions including a horizontal direction and a vertical direction, in response to the first chroma syntax element indicating that the differential modulation has been applied to the chroma block;
determining a differential-modulated residual block for the chroma block from the bitstream;
determine a differential-modulated residual block for the chroma block from the bitstream;
determining quantized residual values by differential-demodulating the differential- modulated residual block in the differential modulation direction indicated by the second chroma syntax element;
determine quantized residual values by differential-demodulating the differential- modulated residual block in the differential modulation direction indicated by the second chroma syntax element;
inversely quantizing the quantized residual values for the chroma block;
inversely quantize the quantized residual values for the chroma block;
generating predicted values for the chroma block; and
generate predicted values for the chroma block; and
reconstructing the chroma block corresponding to the first block based on the inversely quantized residual values and the predicted values,
reconstruct the chroma block corresponding to the first block based on the inversely quantized residual values and the predicted values,
wherein the conditions defined by the information on the chroma sampling format and the high level syntax elements are satisfied when:
wherein the conditions defined by the information on the chroma sampling format and the high level syntax elements are satisfied when:
(1) the single common control flag indicates that the differential modulation is permitted for the video sequence,
(1) the single common control flag indicates that the differential modulation is permitted for the video sequence,
(2) a value obtained by dividing a width of the first block by a horizontal scaling factor determined by the chroma sampling format that the information on the chroma sampling format indicates among the plurality of chroma sampling formats is smaller than or equal to the maximum block size, and
(2) a value obtained by dividing a width of the first block by a horizontal scaling factor determined by the chroma sampling format that the information on the chroma sampling format indicates among the plurality of chroma sampling formats is smaller than or equal to the maximum block size, and
(3) a value obtained by dividing a height of the first block by a vertical scaling factor determined by the chroma sampling format indicated by the information on the chroma sampling format is smaller than or equal to the maximum block size.
(3) a value obtained by dividing a height of the first block by a vertical scaling factor determined by the chroma sampling format indicated by the information on the chroma sampling format is smaller than or equal to the maximum block size.
Instant Application
Application ‘099
Claim 2. The method of claim 1, wherein generating the predicted values for the chroma block comprises:
Claim 2. The apparatus of claim 1, wherein the processor is configured to generate the predicted values for the chroma block by performing a process comprising:
setting, as an intra prediction mode for the chroma block, a prediction mode having a direction identical with the differential modulation direction indicated by the second chroma syntax element among a vertical prediction mode and a horizontal prediction mode; and
setting, as an intra prediction mode for the chroma block, a prediction mode having a direction identical with the differential modulation direction indicated by the second chroma syntax element among a vertical prediction mode and a horizontal prediction mode; and
generating the predicted values for the chroma block based on the intra prediction mode for the chroma block.
generating the predicted values for the chroma block based on the intra prediction mode for the chroma block.
Instant Application
Application ‘099
Claim 3. The method of claim 1, wherein generating the prediction values for the chroma block comprises: generating the prediction values for the chroma block by performing intra prediction on the chroma block by using samples not filtered from edge samples of a top or left block of the chroma block.
Claim 3. The apparatus of claim 1, wherein the processor is configured to generate the prediction values for the chroma block by performing intra prediction on the chroma block by using samples not filtered from edge samples of a top or left block of the chroma block.
Claims 1-11 are provisionally rejected on the ground of nonstatutory double patenting as being unpatentable over claims 1-11 of copending Application No. 19/056,106 (reference application) (hereinafter “Application ‘106”) in view of U.S. Publication No. 2022/0141465 A1 (hereinafter “Ko”).
Regarding claim 1, Application ‘106 discloses every limitation of claim 1, except for the following decoding a second chroma syntax element indicating a differential modulation direction applied to the chroma block among a plurality of differential modulation directions including a horizontal direction and a vertical direction, in response to the first chroma syntax element indicating that the differential modulation has been applied to the chroma block.
However, Ko teaches decoding a second chroma syntax element indicating a differential modulation direction applied to the chroma block among a plurality of differential modulation directions including a horizontal direction and a vertical direction, in response to the first chroma syntax element indicating that the differential modulation has been applied to the chroma block ([0400], “When the value of intra_bdpcm_chroma_flag is 1, the decoder may parse syntax related to chroma BDPCM. In this case, the syntax related to chroma BDPCM may include intra_bdpcm_chroma_dir_flag. intra_bdpcm_chroma_dir_flag may be a flag indicating a prediction direction of chroma BDPCM. For example, intra_bdpcm_chroma_dir_flag may indicate whether the prediction direction of chroma BDPCM is horizontal or vertical. sps_bdpcm_chroma_enable_flag may be a syntax element signaled at a higher level indicating whether chroma BDPCM is usable”).
Before the effective filing date of the claimed invention, it would have been obvious to a person having ordinary skill in the art to have signaled a direction for applying differential modulation, as taught by Ko ([0400]), in Application ‘106. One would have been motivated to modify Application ‘106, by incorporating Ko’s invention, to increase coding efficiency (Ko: [0004-0006]).
Regarding claims 2-11, each limitation is taught by Application ‘106 in combination with Ko, for the same rationale of claim 1. The following tables exemplify the overlapping subject matter between the instant application and Application ‘106.
Instant Application
Application ‘106
Claim 1. A method for decoding a bitstream encoded from a video sequence comprising a plurality of pictures, the method comprising:
Claim 1. A method for decoding a bitstream encoded from a video sequence comprising a plurality of pictures, the method comprising:
decoding, from a sequence parameter set of the bitstream, information on a chroma sampling format and high level syntax elements related to differential modulation for residual signals,
decoding, from a sequence parameter set of the bitstream, information on a chroma sampling format and high level syntax elements related to differential modulation for residual signals,
wherein the information on the chroma sampling format indicates one of a plurality of chroma sampling formats including 4:4:4, 4:2:2, or 4:2:0, and
wherein the information on the chroma sampling format indicates one of a plurality of chroma sampling formats including 4:4:4, 4:2:2, or 4:2:0, and
wherein the high level syntax elements comprise a single common control flag indicating whether the differential modulation is permitted for the residual signals of each of luma and chroma components of the video sequence and information on a maximum block size for which the differential modulation is permitted;
wherein the high level syntax elements comprise a single common control flag indicating whether the differential modulation is permitted for the residual signals of each of luma and chroma components of the video sequence and information on a maximum block size for which the differential modulation is permitted;
decoding a first chroma syntax element indicating whether the differential modulation has been applied to a chroma block corresponding to a first block to be currently decoded, when the first block satisfies conditions defined by the information on the chroma sampling format and the high level syntax elements;
decoding a first chroma syntax element indicating whether the differential modulation has been applied to a chroma block corresponding to a first block to be currently decoded, when the first block satisfies conditions defined by the information on the chroma sampling format and the high level syntax elements;
decoding a second chroma syntax element indicating a differential modulation direction applied to the chroma block among a plurality of differential modulation directions including a horizontal direction and a vertical direction, in response to the first chroma syntax element indicating that the differential modulation has been applied to the chroma block;
decoding a second chroma syntax element indicating a differential modulation direction applied to the chroma block in response to the first chroma syntax element indicating that the differential modulation has been applied to the chroma block;
determining a differential-modulated residual block for the chroma block from the bitstream;
determining a differential-modulated residual block for the chroma block from the bitstream;
determining quantized residual values by differential-demodulating the differential- modulated residual block in the differential modulation direction indicated by the second chroma syntax element;
determining quantized residual values by differential-demodulating the differential- modulated residual block in the differential modulation direction indicated by the second chroma syntax element;
inversely quantizing the quantized residual values for the chroma block;
inversely quantizing the quantized residual values for the chroma block;
generating predicted values for the chroma block; and
generating predicted values for the chroma block using an intra prediction; and
reconstructing the chroma block corresponding to the first block based on the inversely quantized residual values and the predicted values,
reconstructing the chroma block corresponding to the first block based on the inversely quantized residual values and the predicted values,
wherein the conditions defined by the information on the chroma sampling format and the high level syntax elements are satisfied when:
wherein the conditions defined by the information on the chroma sampling format and the high level syntax elements are satisfied when:
(1) the single common control flag indicates that the differential modulation is permitted for the video sequence,
(1) the single common control flag indicates that the differential modulation is permitted for the video sequence,
(2) a value obtained by dividing a width of the first block by a horizontal scaling factor determined by the chroma sampling format that the information on the chroma sampling format indicates among the plurality of chroma sampling formats is smaller than or equal to the maximum block size, and
(2) a value obtained by dividing a width of the first block by a horizontal scaling factor determined by the chroma sampling format that the information on the chroma sampling format indicates among the plurality of chroma sampling formats is smaller than or equal to the maximum block size, and
(3) a value obtained by dividing a height of the first block by a vertical scaling factor determined by the chroma sampling format indicated by the information on the chroma sampling format is smaller than or equal to the maximum block size.
(3) a value obtained by dividing a height of the first block by a vertical scaling factor determined by the chroma sampling format indicated by the information on the chroma sampling format is smaller than or equal to the maximum block size.
Instant Application
Application ‘106
Claim 2. The method of claim 1, wherein generating the predicted values for the chroma block comprises:
Claim 2. The method of claim 1, wherein generating the predicted values for the chroma block comprises:
setting, as an intra prediction mode for the chroma block, a prediction mode having a direction identical with the differential modulation direction indicated by the second chroma syntax element among a vertical prediction mode and a horizontal prediction mode; and
setting, as an intra prediction mode for the chroma block, a prediction mode having a direction identical with the differential modulation direction indicated by the second chroma syntax element among a vertical prediction mode and a horizontal prediction mode; and
generating the predicted values for the chroma block based on the intra prediction mode for the chroma block.
generating the predicted values for the chroma block based on the intra prediction mode for the chroma block.
Instant Application
Application ‘106
Claim 3. The method of claim 1, wherein generating the prediction values for the chroma block comprises: generating the prediction values for the chroma block by performing intra prediction on the chroma block by using samples not filtered from edge samples of a top or left block of the chroma block.
Claim 3. The method of claim 1, wherein generating the prediction values for the chroma block comprises: generating the prediction values for the chroma block by performing intra prediction on the chroma block by using samples not filtered from edge samples of a top or left block of the chroma block.
Conclusion
The prior art made of record and not relied upon is considered pertinent to applicant's disclosure:
Bross et al., “Versatile Video Coding (Draft 7)”, JVET-P2001-vE (“Bross”) – Discloses using block-based delta pulse code modulation. See Bross, Section 7.3.2.3, p. 41.
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/STUART D BENNETT/Examiner, Art Unit 2481