PATENT CLAIM ANALYSIS

Application Number: 16043880
Application Type: Utility
Filing Date: 2018-07
Publication Date: 2018-11
Patent Classification: ["704", "500000"]

Abstract:
A method for recovering lost frame in a media bitstream, where when a frame loss event occurs, a decoder obtains a synthesized high frequency band signal of a current lost frame, and recovery information related to the current lost frame, determines a global gain gradient of the current lost frame, and determines a global gain of the current lost frame according to the global gain gradient and a global gain of each frame in previous M frames of the current lost frame. A high frequency band signal of the current lost frame is obtained by adjusting the synthesized high frequency band signal of the current lost frame according to the global gain and a subframe gain of the current lost frame. Hence, the method enables natural and smooth transitions of the high frequency band signal between the frames, and attenuates noises in the high frequency band signal.

Claim (Index 11):
The method of  claim 10 , wherein determining the subframe gain gradient of the current lost frame comprises determining the subframe gain gradient of the current lost frame according to the quantity of continuously lost frames and the coding mode or the frame class of the last frame received before the frame loss, and the subframe gain gradient of the current lost frame being determined to be less than or equal to a preset threshold and greater than zero when it cannot be determined whether a coding mode of the current lost frame is the same as a coding mode of the last frame received before the frame loss or whether a frame class of the current lost frame is the same as the frame class of the last frame received before the frame loss, and when the last frame received before the frame loss comprising an unvoiced frame and the quantity of continuously lost frames being less than or equal to three.

Metadata:
- Claim Count in Document: 17.0
- Percentile: 95.0
- Lexical Diversity: 2.90741
- Patent Class: 704.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['14981956', '14985831', '15385881', '15817296', '14175195']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.3021769773817896
- 35 USC 102 Novelty (BERT): 0.5820527494780681
- Combined Prediction Score: 0.3301645545914174
- Mean Citation Score: 338.395552
- Max Citation Score: 500.80142
- Similarity Product: 439.05423869304656

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