PATENT CLAIM ANALYSIS

Application Number: 16191843
Application Type: Utility
Filing Date: 2018-11
Publication Date: 2019-04
Patent Classification: ["375", "240260"]

Abstract:
Innovations in signaling of reference picture list (“RPL”) modification information. For example, a video encoder evaluates a condition that depends at least in part on a variable indicating a number of total reference pictures. Depending on the results of the evaluation, the encoder signals in a bitstream a flag that indicates whether an RPL is modified according to syntax elements explicitly signaled in the bitstream. A video decoder evaluates the condition and, depending on results of the evaluation, parses from a bitstream a flag that indicates whether an RPL is modified according to syntax elements explicitly signaled in the bitstream. The condition can be evaluated as part of processing for an RPL, modification structure that includes the flag, or as part of processing for a slice header. The encoder and decoder can also evaluate other conditions that affect syntax elements for list entries of the RPL modification information.

Claim (Index 33):
A computer system comprising memory and one or more processing units, wherein the computer system implements a video encoder system that includes:\n a buffer configured to receive video frames; and a video encoder configured to perform encoding of the video frames to produce encoded data in a bitstream, wherein the encoding of the video frames includes:\n evaluating results of motion compensation for which a reference picture list (\u201cRPL\u201d) is modified according to syntax elements explicitly signaled in the bitstream; \n evaluating results of motion compensation for which the RPL is not modified according to syntax elements explicitly signaled in the bitstream; \n modifying the RPL so as to accomplish one or more of (a) reordering one or more reference pictures for more efficient addressing with reference indices, (b) removing one or more reference pictures based at least in part on frequency of use during encoding, and (c) adding one or more reference pictures based at least in part on frequency of use during encoding; \n evaluating a condition, wherein the condition depends on whether a value of a variable is greater than 1, the variable indicating a number of total reference pictures; and \n depending on whether the condition is satisfied, conditionally signaling in the bitstream a flag that indicates whether the RPL is modified according to syntax elements explicitly signaled in the bitstream.

Metadata:
- Claim Count in Document: 23.0
- Percentile: 98.0
- Lexical Diversity: 2.15789
- Patent Class: 375.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['13781710', '15064299', '15655797', '13669380', '15952796']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.551183097955816
- 35 USC 102 Novelty (BERT): 0.6518921889866608
- Combined Prediction Score: 0.5612540070589005
- Mean Citation Score: 536.7175380000001
- Max Citation Score: 669.6384
- Similarity Product: 584.3776497310638

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