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 7):
A decoder system decoding a bitstream signal including mono SBR parameters and one or more parametric stereo parameters to a stereo signal, the decoder system comprising:\n a perceptual decoder decoding based on the bitstream signal, wherein the perceptual decoder generating by decoding a first signal and a second signal and and outputting a downmix signal and a residual signal, wherein the perceptual decoder selects the downmix signal and the residual signal\n based on a sum of the first signal and of the second signal and based on a 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; a mono SBR decoder generating an SBR decoded downmix signal in response to the downmix signal and the mono SBR parameters; and an upmixer coupled to the perceptual decoder, and generating the stereo signal based on the SBR decoded downmix signal and the residual signal, with the upmix operation of upmixer being dependent on the one or more parametric stereo parameters.

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): 0.768056031357028
- 35 USC 102 Novelty (BERT): 0.6409371982453826
- Combined Prediction Score: 0.7553441480458635
- Mean Citation Score: 493.076836
- Max Citation Score: 627.1298
- Similarity Product: 582.8088868901016

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