PATENT CLAIM ANALYSIS

Application Number: 16142687
Application Type: Utility
Filing Date: 2018-09
Publication Date: 2019-01
Patent Classification: ["375", "240140"]

Abstract:
A predictive coding system performs predictive encoding by determination of an optimum prediction mode from prediction methods for a pixel signal of a target block. A predicted signal is generated according to the determined mode, and a residual signal is determined. The residual signal and the optimum prediction mode are encoded to generate a compressed signal, which is decoded. The decoded signal is stored as a reconstructed picture sample. During encoding, a candidate prediction mode list is generated that contains elements of optimum prediction modes of previously-reproduced blocks neighboring the target block. A flag indicating whether the list contains an element corresponding to the optimum prediction mode is encoded, and an index to the corresponding element is encoded if the corresponding element is included in the list. The optimum prediction mode can be encoded based on identifying the elements in the list, unless no corresponding element appears on the list.

Claim (Index 2):
An image predictive decoding method executed by an image predictive decoding device, the image predictive decoding method comprising:\n an input step of accepting input of compressed picture data containing a residual signal and encoded information, the residual signal generated by dividing a picture into a plurality of blocks and performing predictive encoding of a target block, and the encoded information about a prediction mode indicative of a generation method of a predicted signal of the target block; a restoration step of extracting the residual signal of the target block from the compressed picture data to restore a reproduced residual signal; a prediction mode decoding step of restoring the encoded information about the prediction mode to generate the prediction mode; a predicted signal generation step of generating the predicted signal of the target block based on the prediction mode; a picture restoration step of adding the predicted signal to the reproduced residual signal to restore a pixel signal of the target block; and a storage step of storing the restored pixel signal as a reproduced pixel signal, wherein the prediction mode decoding step comprises: generating a candidate prediction mode list containing elements of prediction modes of a plurality of previously-reproduced blocks neighboring the target block; decoding a flag that indicates whether the candidate prediction mode list contains an element corresponding to the prediction mode; when the flag indicates that the corresponding element is present in the candidate prediction mode list, further decoding an index indexing the candidate prediction mode list to obtain an element indicated by the index as the prediction mode; when the flag indicates that no corresponding element is present in the candidate prediction mode list, further decoding a value of a REM (remaining) mode to restore the value of the REM mode as a numerical value of a fixed-length code, and remapping the restored value of the REM mode to an identification number of the prediction mode to obtain the intra-frame prediction mode of the target block; and wherein the remapping of the restored value of the REM mode comprises:\n setting a variable for the intra-frame prediction mode of the target block equal to a decoded value of the REM mode, and \n repeatedly performing, for every element in the candidate prediction list, a step of comparing the variable with a smallest element among elements on the candidate prediction list which are not yet used in comparison, and a step of adding 1 to a value of the variable when the variable is larger than or equal to the element, to obtain the final value of the variable as the intra-frame prediction mode of the target block.

Metadata:
- Claim Count in Document: 3.0
- Percentile: 97.0
- Lexical Diversity: 2.28169
- Patent Class: 375.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['13941235', '15406384', '16050634', '15601142', '13941180']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.5839614920563984
- 35 USC 102 Novelty (BERT): 0.6130976909493622
- Combined Prediction Score: 0.5868751119456947
- Mean Citation Score: 489.9620440000001
- Max Citation Score: 544.00146
- Similarity Product: 538.9948108971798

Labels:
- Claim Label 101: 1
- Claim Label 102: 1
- Claim Label 103: 0
- Claim Label 112: 1
- Combined Label: 1
- Label 101 Adjusted: 1

Dataset: test