PATENT CLAIM ANALYSIS

Application Number: 16216892
Application Type: Utility
Filing Date: 2018-12
Publication Date: 2019-04
Patent Classification: ["381", "020000"]

Abstract:
A multi-channel decoder for generating a binaural signal from a downmix signal using upmix rule information on an energy-error introducing upmix rule for calculating a gain factor based on the upmix rule information and characteristics of head related transfer function based filters corresponding to upmix channels. The one or more gain factors are used by a filter processor for filtering the downmix signal so that an energy corrected binaural signal having a left binaural channel and a right binaural channel is obtained.

Claim (Index 1):
A multi-channel decoder for generating an energy-corrected binaural signal from a downmix signal derived from an original multi-channel signal using parameters including an upmix rule information useable for upmixing the downmix signal with an upmix rule, the upmix rule resulting in an energy-error, comprising:\n a demultiplexer for demultiplexing the parameters from the downmix signal; a gain factor calculator configured for calculating at least one gain factor for reducing or eliminating the energy-error obtainable by the upmixing of the downmix signal using the upmix rule, based on the upmix rule information and filter characteristics of head related transfer function based filters corresponding to upmix channels, wherein the gain factor calculator is operative to calculate the gain factor based on g n = { min \ue89e { g max , E n B + \u025b E n B - \u0394 \ue89e \ue89e E n B + \u025b } , if \ue89e \ue89e \u03b1 > 0 , \u03b2 > 0 , \u03c3 < 1 ; 1 , otherwise . wherein g n  is the gain factor for the first channel, when n is set to 1, wherein g 2  is the gain factor of a second channel, when n is set to 2, wherein E n B  is a weighted addition energy calculated by weighting energies of channel impulse responses using weighting parameters, and wherein \u0394E n B  is an estimate for the energy error introduced by the upmix rule, wherein \u03b1, \u03b2, and \u03c3 are upmix rule dependent parameters, and wherein \u03f5 is a number greater than or equal to zero; and a processor for generating head related transfer function parameters, wherein the filter characteristics of the head related transfer function are determined based on the head related transfer function parameters; and a filter processor configured for filtering the downmix signal using the at least one gain factor, the filter characteristics of the head related transfer function based filters and the upmix rule information to obtain the energy- corrected binaural signal.

Metadata:
- Claim Count in Document: 41.0
- Percentile: 98.0
- Lexical Diversity: 1.5
- Patent Class: 381.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['12979192', '15844342', '15819885', '15820882', '15849534']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7858192516102118
- 35 USC 102 Novelty (BERT): 0.640615038332563
- Combined Prediction Score: 0.771298830282447
- Mean Citation Score: 590.7709520000002
- Max Citation Score: 591.2392
- Similarity Product: 587.0910286805153

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