PATENT CLAIM ANALYSIS

Application Number: 15952796
Application Type: Utility
Filing Date: 2018-04
Publication Date: 2018-08
Patent Classification: ["375", "240010"]

Abstract:
Innovations for signaling state of a decoded picture buffer (“DPB”) and reference picture lists (“RPLs”). In example implementations, rather than rely on internal state of a decoder to manage and update DPB and RPLs, state information about the DPB and RPLs is explicitly signaled. This permits a decoder to determine which pictures are expected to be available for reference from the signaled state information. For example, an encoder determines state information that identifies which pictures are available for use as reference pictures (optionally considering feedback information from a decoder about which pictures are available). The encoder sets syntax elements that represent the state information. In doing so, the encoder sets identifying information for a long-term reference picture (“LTRP”), where the identifying information is a value of picture order count least significant bits for the LTRB. The encoder then outputs the syntax elements as part of a bitstream.

Claim (Index 52):
In a computing system that implements a video decoder, a method comprising:\n receiving at least part of a bitstream; parsing syntax elements from the bitstream, wherein the syntax elements represent long-term reference picture (\u201cLTRP\u201d) status information for a current picture among pictures of a sequence, wherein the LTRP status information for the current picture identifies which pictures, if any, are available for use as LTRPs for the current picture, the syntax elements including identifying information for a given LTRP in the LTRP status information for the current picture, and wherein the identifying information for the given LTRP is a value of picture order count least significant bits (\u201cPOC LSBs\u201d), modulo a most significant bit wrapping point, for the given LTRP for the current picture; and using the LTRP status information during decoding, wherein the value of the POC LSBs for the given LTRP, modulo the most significant bit wrapping point, is used to at least in part indicate a difference between POC values of the current picture and the given LTRP.

Metadata:
- Claim Count in Document: 59.0
- Percentile: 91.0
- Lexical Diversity: 2.1358
- Patent Class: 375.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['13669380', '14351620', '13946730', '13929052', '13828354']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.5042977996413939
- 35 USC 102 Novelty (BERT): 0.6596952262549536
- Combined Prediction Score: 0.5198375423027498
- Mean Citation Score: 464.496336
- Max Citation Score: 656.5656
- Similarity Product: 610.3867428806303

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