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 .
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).
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Claims 23-30 and 32-43 are rejected on the ground of nonstatutory double patenting as being unpatentable over claims 1-20 of U.S. Patent No. 12,212,773. Although the claims at issue are not identical, they are not patentably distinct from each other because the limitations of the claims of the instant application are entirely encompassed by those of the ‘773 application as follows:
12,212,773
Instant Application
1. A device for video decoding, comprising:
a processor configured to:
obtain a collocated picture associated with a current video block;
determine a constrained region in the collocated picture based on a location of the current video block, wherein a size of the constrained region is greater than a size of the current video block;
determine a first location associated with a collocated block based on the location of the current video block and a temporal motion vector (MV);
determine whether the first location associated with the collocated block is within the constrained region in the collocated picture, wherein, based on the first location associated with the collocated block being outside the constrained region, the processor is configured to determine a second location associated with the collocated block using a clipping operation associated with the constrained region in the collocated picture, wherein, the clipping operation changes the first location associated with the collocated block based on a boundary of the constrained region;
obtain, in the collocated picture, the collocated block associated with the current video block at the second location associated with the collocated block;
obtain an MV associated with the collocated block; and
decode the current video block based on the MV associated with the collocated block.
2. The device of claim 1, wherein the current video block is an advanced temporal motion vector prediction (ATMVP) subblock, and the collocated block is a collocated subblock associated with the ATMVP subblock, and wherein the processor is further configured to: obtain an MV associated with the collocated subblock; and predict the ATMVP subblock based on the MV associated with the collocated subblock, wherein the current video block is decoded based on the prediction of the ATMVP subblock.
23. A device for video decoding, comprising:
a processor configured to:
obtain a collocated picture associated with a current video block;
determine a location associated with a collocated block in the collocated picture based on a location of the current video block and a temporal motion vector (MV),
wherein a clipping operation constrains the location within a constrained region in the collocated picture;
determine a MV of a collocated subblock in the collocated block;
predict a subblock of the current video block based on the MV of the collocated subblock;
and decode the current video block based on the predicted subblock.
1. ….determine whether the first location associated with the collocated block is within the constrained region in the collocated picture, wherein, based on the first location associated with the collocated block being outside the constrained region, the processor is configured to determine a second location associated with the collocated block using a clipping operation associated with the constrained region in the collocated picture, wherein, the clipping operation changes the first location associated with the collocated block based on a boundary of the constrained region
24. The device of claim 23, wherein the clipping operation is applied to ensure that the location is within the constrained region.
3. The device of claim 1, wherein the processor is further configured: determine a picture order count (POC) difference between the collocated picture and a reference picture of a neighboring block of the current video block; and determine the temporal MV based on the POC difference, wherein the constrained region in the collocated picture is determined further based on the temporal MV.
25. The device of claim 23, wherein the temporal MV is obtained based on a MV of a video block that is adjacent to the current video block.
1. … wherein, the clipping operation changes the first location associated with the collocated block based on a boundary of the constrained region;
26. The device of claim 23, wherein the clipping operation constrains the location based on a boundary of the constrained region.
1. … wherein a size of the constrained region is greater than a size of the current video block;
27. The device of claim 23, wherein a size of the constrained region is greater than a size of the current video block.
3. The device of claim 1, wherein the processor is further configured: determine a picture order count (POC) difference between the collocated picture and a reference picture of a neighboring block of the current video block; and determine the temporal MV based on the POC difference, wherein the constrained region in the collocated picture is determined further based on the temporal MV.
28. The device of claim 23, wherein the processor is further configured: determine a picture order count (POC) difference between the collocated picture and a reference picture of a neighboring block of the current video block; and determine the temporal MV based on the POC difference.
4. The device of claim 1, wherein a coding tree block (CTU) comprises the current video block, and the constrained region is further determined based on a location of the CTU in the collocated picture.
29. The device of claim 23, wherein a coding tree block (CTU) comprises the current video block, and the constrained region is further determined based on a location of the CTU in the collocated picture.
1. … wherein a size of the constrained region is greater than a size of the current video block;
4. The device of claim 1, wherein a coding tree block (CTU) comprises the current video block, and the constrained region is further determined based on a location of the CTU in the collocated picture.
30. The device of claim 23, wherein a coding tree block (CTU) comprises the current video block, and wherein an area of the constrained region is determined to be equal to or greater than an area of the CTU.
1. … wherein, the clipping operation changes the first location associated with the collocated block based on a boundary of the constrained region;
2. The device of claim 1, wherein the current video block is an advanced temporal motion vector prediction (ATMVP) subblock, and the collocated block is a collocated subblock associated with the ATMVP subblock, and wherein the processor is further configured to: obtain an MV associated with the collocated subblock; and predict the ATMVP subblock based on the MV associated with the collocated subblock, wherein the current video block is decoded based on the prediction of the ATMVP subblock.
32. The device of claim 23, wherein the processor is further configured to: determine a location of the collocated subblock based on the constrained region; and obtain the collocated subblock at the determined location of the collocated subblock.
1. … determine a first location associated with a collocated block based on the location of the current video block and a temporal motion vector (MV); determine whether the first location associated with the collocated block is within the constrained region in the collocated picture, wherein, based on the first location associated with the collocated block being outside the constrained region, the processor is configured to determine a second location associated with the collocated block using a clipping operation associated with the constrained region in the collocated picture, wherein, the clipping operation changes the first location associated with the collocated block based on a boundary of the constrained region;
33. The device of claim 23, wherein the location associated with the collocated block is a second location, and the processor is further configured to: determine a first location associated with the collocated block based on the location of the current video block and the temporal MV, wherein the second location is determined based on the first location being outside the constrained region.
Claims 34-42 similarly correspond to claims 9-20 of the '773 patent.
Claim Rejections - 35 USC § 103
The following is a quotation of 35 U.S.C. 103 which forms the basis for all obviousness rejections set forth in this Office action:
A patent for a claimed invention may not be obtained, notwithstanding that the claimed invention is not identically disclosed as set forth in section 102, if the differences between the claimed invention and the prior art are such that the claimed invention as a whole would have been obvious before the effective filing date of the claimed invention to a person having ordinary skill in the art to which the claimed invention pertains. Patentability shall not be negated by the manner in which the invention was made.
Claim(s) 23-27, and 29-42 are rejected under 35 U.S.C. 103 as being unpatentable over Chen et al (2013/0163668 hereafter Chen-668) in view of Chen et al (2015/0085929 hereafter Chen-929).
In regard to claim 23 discloses a device for video decoding comprising:
a processor (Chen Fig. 1 and par. 21 note source and destination device 12 and 14 may be various computing devices which include processors)
configured to:
obtain a collocated picture associated with a video block (Chen-668 par. 66 note reference frame identified by a calculated motion vectors);
determine a location associated with a collocated block in the collocated picture based on a location of the current video block and a temporal motion vector (MV) (Chen-668 pars. 33-34 note motion vectors are used to obtain a collocated CU in a reference frame [collocated frame], further note Fig. 6 and par. 106 motion vectors for a current block may be obtained for spatial or temporally neighboring blocks), wherein a clipping operation constrains the location within a constrained region in the collocated picture (Chen-668 par. 79 note clipping a motion vector to a horizontal and vertical range of -32768 to 32767 in quarter pixel resolution, thus providing an area spanning -8192 to 8191 integer pixels).
It is noted that Chen-668 does not disclose details related to subblock prediction. However Chen-929 discloses a method of predicting subblocks of a current video block including:
determining an MV of a collocated subblock in the collocated block (Chen-929 Figs 14A&B and par. 164 note Advanced TMVP (ATVMP) mode that begins by identifying a corresponding block in a reference picture, and then obtains motion information of the subblocks within the corresponding block);
predicting a subblock of the current video block (Chen 929 note assigning motion information of the reference subblocks to subblocks of the current block); and
decoding the current video block based on the MV of the collocated subblock (Chen-929 par. 164 note motion compensating each subblock of the current block, further note Fig 16 and pars 325-331 particularly par. 325 for motion compensation during decoding).
It is therefore considered obvious that one of ordinary skill in the art before the effective filing date of the invention would recognize the advantage of incorporating an ATMVP prediction mode as taught by Chen-929 in the invention of Chen-668 in order to gain the advantage of separately motion compensating each subblock of a video block as suggested by Chen-929 (Chen-929 par. 164).
In regard to claim 24 refer to the statements made in the rejection of claim 23 above. Chen-668 further discloses that the clipping operation is applied to ensure that the location is within the constrained region (Chen-668 pars. 79-80 note clipping scaled motion vectors to ensure the locations they point to are within displacement limits).
In regard to claim 25 refer to the statements made in the rejection of claim 23 above. Chen-668 further discloses that the temporal MV is obtained based on an MV of a video block that is adjacent to the current video block (Chen-668 par. 106 note obtaining motion vectors from neighboring blocks).
In regard to claim 26 refer to the statements made in the rejection of claim 23 above. Chen-668 the clipping operation constrains the location based on a boundary of the constrained region (Chen-668 pars. 79-80 note clipping scaled motion vectors to ensure they are within the boundary formed by displacement limits).
In regard to claim 27 refer to the statements made in the rejection of claim 23 above. Chen-668 and Chen-929 further discloses a size of the constrained region is greater than a size of the current video block (Chen-668 par 79 note the constrained region spans -8192 to 8191 integer pixels, further note Chen-929 maximum CU size is 64x64 which is smaller than the constrained region in Chen-668) .
In regard to claim 29 refer to the statements made in the rejection of claim 23 above. Chen-668 further discloses coding tree block (CTU) comprises the current video block (Chen-668 par. 31 note CU that may be split into sub-CUs as a coding tree unit), and the constrained region is further determined based on a location of the CTU in the collocated picture (Chen-668 par. 34 note MV identifying a CU in a reference frame, further note par. 79 MV are constrained to be within a range of the same location as current CU in the reference frame).
In regard to claim 30 refer to the statements made in the rejection of claim 23 above. Chen 668 and Chen-929 further disclose a CTU comprises the current video block (Chen par. 31 note current block is a CU or a sub-CU), and wherein an area of the constrained region is determined to be equal to or greater than an area of the CTU (Chen-668 par 79 note the constrained region spans -8192 to 8191 integer pixels, further note Chen-929 maximum CU size is 64x64 which is smaller than the constrained region in Chen-668)
In regard to claim 31 refer to the statements made in the rejection of claim 23 above. Chen-929 further discloses:
obtaining motion information associated with the collocated subblock (Chen-929 par. 164 note obtaining motion information from the subblocks of a collocated block); and
performing temporal motion vector scaling on the motion information to obtain a reference index and the MV of the subblock, wherein the subblock is predicted further based on the reference index (Chen-929 pars 183-190 note temporally scaling the subblock MV information based on the references used by the subblock MVs).
In regard to claim 32 refer to the statements made in the rejection of claim 23 above. Chen-668 further discloses:
determining a location of the collocated subblock based on the constrained region (Chen-668 par. 79-80 note clipping MV in the horizontal or vertical direction to be within the displacement limit); and
obtain the collocated subblock at the determined location of the collocated subblock (Chen-668 note of the MV is clipped the collocated block will be determined based on the clipped MV value which is within the displacement limit).
In regard to claim 33 refer to the statements made in the rejection of claim 23 above. Chen further discloses that the location associated with the collocated block is a second location, and the processor is further configured to:
determine a first location associated with the collocated block based on the location of the current video block and the temporal MV (Chen-668 pars. 33-34 note motion vectors are used to obtain a collocated CU in a reference frame), wherein the second location is determined based on the first location being outside the constrained region (Chen-668 par. 79 note motion vectors are clipped in the horizontal and vertical direction to point to new collocated blocks within the displacement limit).
Claims 37-39 describe a decoding method that substantially corresponds to the process steps performed by the decoding device of claims 23-27 and 29-33 above. Refer to the statements made in regard to claims 23-27 and 29-33 above for the rejection of claims 37-39 which will not be repeated here for brevity.
Claims 34-36 and 40-42 describe a device and method for video encoding substantially corresponds to the process steps performed by the decoding device of claims 23-27 and 29-33 above. Refer to the statements made in regard to claims 23-27 and 29-33 above for the rejection of claims 34-36 and 40-42 which will not be repeated here for brevity. Chen-668 further discloses encoding a video block based on a collocated block (Chen Fig. 1 #20 and pars 39-43 for encoding using collocated blocks)
Claim(s) 28 is rejected under 35 U.S.C. 103 as being unpatentable over Chen-668 in view of Chen-929 as applied to claim 23 above and in further view of Seregin et al (2013/0272412).
In regard to claim 28 refer to the statements made in the rejection of claim 23 above. Chen-668 further discloses scaling the temporal motion vector according to picture order count (POC) information including a POC of a reference picture of a neighboring block (Chen-668 par. 72-73 note POCmvp_blk_ref) and a POC of the collocated picture (Chen-668 par. 73 note POCref).
It is noted that neither Chen-668 nor Chen-929 disclose determining a difference between these particular POC values and determining the temporal MV based on the difference. However Seregin discloses determining a temporal motion vector without scaling when the reference picture of a neighboring block and the collocated reference picture is the same, thus indicating that the difference between the POCs of a reference picture of a neighboring block and a collocated reference picture is zero, and determining the temporal MV with scaling if the POC difference is non-zero (Seregin Fig. 7 and pars 126 note determining if reference pictures have a POC difference and determining whether or not to perform MV scaling based on the determination).
It is therefore considered obvious that one of ordinary skill in the art would recognize the advantage of determining whether the POC difference between a reference picture for a neighboring block and a POC of the collocated block was zero or greater than zero as suggested by Seregin in the motion vector scaling of Chen-668 and Chen-929 in order to avoid unnecessary scaling computations when not required as suggested by Seregin (Seregin par. 126 note skipping scaling for references with the same POC).
Conclusion
The prior art made of record and not relied upon is considered pertinent to applicant's disclosure.
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