PATENT CLAIM ANALYSIS

Application Number: 15766921
Application Type: Utility
Filing Date: 2018-04
Publication Date: 2018-10
Patent Classification: ["375", "240120"]

Abstract:
Method and apparatus of managing a DPB (decoded picture buffer) for a video coding system are disclosed. Whether the IntraBC mode is used for a current picture is determined and a maximum allowed number of decoded pictures in the DPB is allocated based on whether the IntraBC mode is used for the current picture. The current picture is then encoded or decoded using decoded pictures stored in the DPB as reference data. In another method, a maximum number of reordered pictures in the DPB is determined. If certain conditions are true, one or more decoded pictures stored in the DPB will be emptied until none of the conditions is true. One condition corresponds to a number of decoded pictures in the DPB marked as “needed for output” being greater than the maximum number of reordered picture modified according to whether the IntraBC mode is used for the current picture.

Claim (Index 14):
A method of managing a DPB (decoded picture buffer) for a video coding system, wherein the video coding system uses coding modes including an Inter prediction mode and an IntraBC (Intra Block Copy) mode, comprising:\n determining whether the IntraBC mode is used for a current picture, wherein decoded data of the current picture is used as reference data for the current picture if the current picture is coded using the IntraBC mode; determining a maximum number of reordered pictures in the DPB, wherein the maximum number of reordered pictures indicates a maximum allowed number of pictures with an output-picture flag equal to 1 that can precede any selected picture with the output-picture flag equal to 1 in a CVS (coded video sequence) in a decoding order and follow said any selected picture with the output-picture flag equal to 1 in an output order; emptying one or more decoded pictures stored in the DPB if one or more conditions are true, wherein said one or more conditions include a first condition corresponding to a number of decoded pictures in the DPB marked as \u201cneeded for output\u201d being greater than the maximum number of reordered picture modified according to whether the IntraBC mode is used for the current picture; and encoding or decoding the current picture using decoded pictures stored in the DPB as reference data, wherein a total number of decoded pictures in the DPB is equal to or less than a maximum allowed number of decoded pictures in the DPB.

Metadata:
- Claim Count in Document: 4.0
- Percentile: 91.0
- Lexical Diversity: 2.14667
- Patent Class: 375.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['15757104', '15577237', '15574253', '14801142', '14116071']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.5729179327184439
- 35 USC 102 Novelty (BERT): 0.6015635022421175
- Combined Prediction Score: 0.5757824896708112
- Mean Citation Score: 455.032224
- Max Citation Score: 553.7554299999998
- Similarity Product: 479.6903983104275

Labels:
- Claim Label 101: 1
- Claim Label 102: 1
- Claim Label 103: 1
- Claim Label 112: 1
- Combined Label: 1
- Label 101 Adjusted: 1

Dataset: test