PATENT CLAIM ANALYSIS

Application Number: 15873083
Application Type: Utility
Filing Date: 2018-01
Publication Date: 2018-05
Patent Classification: ["381", "022000"]

Abstract:
The application relates to audio encoder and decoder systems. An embodiment of the encoder system comprises a downmix stage for generating a downmix signal and a residual signal based on a stereo signal. In addition, the encoder system comprises a parameter determining stage for determining parametric stereo parameters such as an inter-channel intensity difference and an inter-channel cross-correlation. Preferably, the parametric stereo parameters are time- and frequency-variant. Moreover, the encoder system comprises a transform stage. The transform stage generates a pseudo left/right stereo signal by performing a transform based on the downmix signal and the residual signal. The pseudo stereo signal is processed by a perceptual stereo encoder. For stereo encoding, left/right encoding or mid/side encoding is selectable. Preferably, the selection between left/right stereo encoding and mid/side stereo encoding is time- and frequency-variant.

Claim (Index 10):
The decoder system of  claim 7 , wherein the perceptual decoder comprises a transformation stage performing a sum and difference transform based on the first signal and the second signal for one or more or all used frequency bands.

Metadata:
- Claim Count in Document: 32.0
- Percentile: 86.0
- Lexical Diversity: 2.40984
- Patent Class: 381.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: False
- Related Applications: ['13255143', '14734088', '13394799', '15695424', '15695668']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7932704327640278
- 35 USC 102 Novelty (BERT): 0.6253770910607117
- Combined Prediction Score: 0.7764810985936962
- Mean Citation Score: 493.076836
- Max Citation Score: 627.1298
- Similarity Product: 522.5635600469113

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