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 13):
A method for decoding a bitstream signal including mono SBR parameters and one or more parametric stereo parameters to a stereo signal, the method comprising:\n perceptual decoding based on the bitstream signal, wherein a first signal and a second signal is generated by decoding and a downmix signal and a residual signal is output after perceptual decoding, the downmix signal and the residual signal being selectively\n based on the sum of the first signal and of the second signal and based on the difference of the first signal and of the second signal or \n based on the first signal and based on the second signal\n in a frequency-variant or frequency-invariant manner; \n \n generating an SBR decoded downmix signal in response to the downmix signal and the mono SBR parameters; and generating the stereo signal based on the SBR decoded downmix signal and the residual signal by an upmix operation, with the upmix operation being dependent on the one or more parametric stereo parameters; wherein the method is performed by one or more microprocessor-based components.

Metadata:
- Claim Count in Document: 32.0
- Percentile: 86.0
- Lexical Diversity: 2.40984
- Patent Class: 381.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['13255143', '14734088', '13394799', '15695424', '15695668']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7664653024870985
- 35 USC 102 Novelty (BERT): 0.646398392164485
- Combined Prediction Score: 0.7544586114548373
- Mean Citation Score: 493.076836
- Max Citation Score: 627.1298
- Similarity Product: 601.636668251586

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