PATENT CLAIM ANALYSIS

Application Number: 16369156
Application Type: Utility
Filing Date: 2019-03
Publication Date: 2019-07
Patent Classification: ["381", "022000"]

Abstract:
A stereo sound signal encoding method and system for time domain down mixing right and left channels of an input stereo sound signal into primary and secondary channels, determine normalised correlations of the left channel and right channel in relation to a monophonic signal version of the sound. A long-term correlation difference is determined on the basis of the normalised correlation of the left channel and the normalized correlation of the right channel. The long-term correlation difference is converted into a factor β, and the left and right channels are mixed to produce the primary and secondary channels using the factor β, wherein the factor β determines respective contributions of the left and right channels upon production of the primary and secondary channels.

Claim (Index 52):
A system for encoding stereo sound in response to an input stereo sound signal comprising left and right channels, comprising:\n a normalised correlation analyzer for determining a normalised correlation of the left channel and a normalised correlation of the right channel in relation to a monophonic signal version of the sound; a calculator of a long-term correlation difference on the basis of the normalised correlation of the left channel and the normalised correlation of the right channel; a converter of the long-term correlation difference into a factor \u03b2, wherein 0\u2264\u03b2\u22641; a producer of primary and secondary channels from the left and right channels of the input stereo sound signal; and an encoder of the primary channel for producing a primary channel encoded bitstream and an encoder of the secondary channel for producing a secondary channel encoded bitstream, wherein the primary channel encoder and the secondary channel encoder comprise a distributor of a bit budget between encoding of the primary channel and encoding of the secondary channel using the factor \u03b2; wherein the primary channel encoded bitstream and the secondary channel encoded bitstream form an encoded version of the stereo sound.

Metadata:
- Claim Count in Document: 35.0
- Percentile: 99.0
- Lexical Diversity: 2.26316
- Patent Class: 381.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['15761868', '15761895', '15761900', '15761858', '15873083']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7265463268563996
- 35 USC 102 Novelty (BERT): 0.6160581859315388
- Combined Prediction Score: 0.7154975127639135
- Mean Citation Score: 423.34870800000016
- Max Citation Score: 555.2971
- Similarity Product: 524.9557022762896

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