TH125892A - Audio or video encoder Audio or video signal decoder And an associated method for processing multi-channel audio or video signals using variable prediction directions. - Google Patents

Abstract

DC60 (08/01/56) Audio or Video Encoder And decoder for audio or video signals It has been fundamentally determined on a combination of two channels of audio or video signals (201, 202) to obtain them. Combination signal combines the first (204) signal that serves as Signal in the middle And the remainder of the signal (205), which can be obtained by using the signal The side that was supposedly That can be obtained from the signal in the middle Combination signal The first and the rest of the prediction signals are encoded (209) and written (212) into the stream (213), together with the prediction information (206) that has been obtained. Optimizer (207) based on optimization target (208) and pointer pointer. The prediction direction that defines the forecast direction. As it relates to the rest of the signal, the decoder will use the remainder signal to predict. Combination signals include first signal indicators, direction indicators, predictions, and predictive information. To get it too Channel signal The first signal that was decoded and the second channel signal was decoded in the example of the encoder or in the example of the decoder. Real-to-Imaginary Conversion Applications can be obtained for estimating the imaginary part of the spectrum of the signal. Mixed signal one For calculating the prediction signal used in the realization of Rest signs, predictions The first real combination signal is multiplied. With the real part of the information, the complex value prediction And the imaginary part that has been estimated for The first combination signal is multiplied by the imaginary part of the prediction information. That complex value Audio or video encoder And decoder for audio or video signals It has been fundamentally determined on the combination of two channels of audio or video signal (201,202) to obtain it. Combination signal combines the first (204) signal that serves as Signal in the middle And the remainder of the signal (205), which can be obtained using the signal The side that was supposedly That can be obtained from the signal in the middle Combination signal The first and the rest of the prediction signals are encoded (209) and written (212) into the stream (213), together with the prediction information (206) that has been obtained. Optimizer (207) based on optimization target (208) and pointer pointer. The prediction direction that defines the forecast direction. As it relates to the rest of the signal, the decoder will use the remainder signal to predict. Combination signals include first signal indicators, direction indicators, predictions, and predictive information. To get it too Channel signal The first signal that was decoded and the second channel signal was decoded in the example of the encoder or in the example of the decoder. Real-to-Imaginary Conversion Applications can be obtained for estimating the imaginary part of the spectrum of the signal. Mixed signal one For calculating the prediction signal used in the realization of Rest signs, predictions The first real combination signal is multiplied. With the real part of the information, the complex value prediction And the imaginary part that has been estimated for The first compound signal is multiplied by the imaginary part of the prediction information. That complex value

Claims (9)

1. an audio or video signal decoder for decoding audio signals or Encoded multi-channel video (100), audio or video signal. Multiple channels that are encrypted That includes Combination signal Get encrypted That has been built up That are based on a combination rule for the combination of Audio or video signal of the first channel and audio or video signal. Of the second signal of a multi-channel audio or video signal. The remainder of the coded prediction and the prediction information includes: a decoder (110) for decoding the first combination signal. It has been encrypted (104) in order to obtain it. The first combination signal is decoded (112) and for the decoded remainder that has been decoded (106) in order to obtain the remaining signals to be decoded (114). And the decoder calculator (116) for calculating multi-channel signals that Get decoded With the first signal decoded (117) and the second signal decoded (118) by using the first signal (114) Predictive information (108) Combination signal First combination signal. It has been decoded (112) and predictive direction indicators (501) so that the first transponder signal was decoded (117) and the second transponder signal. Decoded (118) will be at least an approximation of the signal for that channel. One and the second signal of a multi-channel signal 2. Audio or video signal decoder In a manner consistent with claim 1 with a predictive directional indicator (501) has been included in the Multi-channel signal that It has been encoded and that has a decoder for that audio or video signal is included as well. The input interface (102) for extracting the prediction direction indicators (501) and for the submission of the prediction direction indicators. Next to the Decoder Calculator (116). 3. Audio or video signal decoder In a manner consistent with claim 1 or clause 2, with the decoder factor (116), a configuration for the use of divisibility rules has been established. Calculate Rule One (402) for calculating a received multi-channel signal. The case for the first state of the prediction direction indicator (501) and for the implementation of the second rule (403) is different. For calculating the received multi-channel signal Decoded in the case of two different states of the prediction direction indicator (501). 4. Audio or video signal decoder In a manner consistent with claim 3 with the first combination signal, the decoded signal consists of a center signal (M) with Rule One (402) computation rule. with Calculation of the side signal (S) from the decoded first combination signal. The decoded rest of the signal, or the decoded first combination signal, is composed of a lateral signal (S) and a second rule of salutation (403). Calculation of the middle signal (M) from the decoded first combination signal. And the rest signs that Get decoded 5.Audio or video decoder In a manner consistent with claim 3, with the first combination signal decoded, the median signal (M) is included, and with Rule One (402). Calculation of the signs of The first transponder that was decoded. And calculation of the signal of the transponder The second signal is decoded using the center signal (M), the prediction information (formula), and the remainder signal that has been decoded. Without explicit calculation of the side signal or where there is a compound signal, the decoded first signal is composed of the lateral signal (S) and with the second rule of computation (403) is included. Calculation of the signal of The first transponder that was decoded. And calculation of the signal of the channel The second signal is decoded using the lateral signal (S), the predictive information (formula) and the remainder that has been decoded. Without clear calculations of the center signal 6. Audio or video signal decoder In a manner consistent with any of the Claims 1 to 5 with a decoder calculator. Has been configured for use. Prediction information (108) where the prediction information (108) is made up of different real values from zero. And / or the imaginary part that is different from zero 7. Audio or video signal decoder Any of the preceding claims with the decoder calculator (116) includes: predictor (1160) for inputting prediction information (108) to the compound signal. Combine the first signal that was decoded (112) or to the signal (601) that was received from the signal. Combine the first decoded signal to obtain it with a prediction signal (1163). Combine signal calculator (1161) for calculating the second compound signal (1165) with a combination of Decoded residual signals (114) and prediction signals (1163) and aggregate (1162) for mixing of decoded first-first-mix-combination (112) and mixed-signal. Combine the second signal (1165) to obtain an audio signal. Or a multi-channel signal that has been decoded With the signal of the signal channel The first transponder was decoded (117) and the second transponder signal was decoded (118), where in the case of State One of Predictive Direction Indicator (501) Combination Signal First Combination Signal is Sum Signal. And the second combination signal is a difference signal or where, in the case of the second state of the prediction direction indicator (501), the first combination signal is the difference signal. And the second combination signal is the sum signal. 8. Audio or visual signal decoder In a manner consistent with any of the Claims 1 to 7 containing the encoded first combination signal (104) and the rest. The encrypted (106) has been created. By using an aliased-generated time-spectral transformation, where the decoder is further incorporated: a spectral-time converter (52,53) for first channel signal generation. Time domain and second channel signal, time domain by the use of conversion algorithms. Spectrum - time That is arranged in conjunction with the time-spectrum conversion algorithm. Overlap / Addition Processor (522) for actions in processing operations. Placement - Positive for first channel signals, time domain and for second tunnel signals, time domain To receive the signal Signal time domain One without alias And the second time-domain signal without alias 9.Audio or video decoder In a manner consistent with one of the previous claims containing predictive information (108), it includes: A different-from-zero real value factor with a prediction (1160) is configured for multiplication of compound summaries. The first signal that has been decoded With the real factor To get it too Part one of Prediction signals and where the combined signal calculator A configuration for the integration of Is linear of the remainder of the signal that has been decoded and that part of the prediction signal 1 0.Audio or video decoder In a manner consistent with one of the above Previous rights that had a predictive substance (108) included An imaginary factor that is different from zero with a predictor (1160) is given. The scheme for estimating (1160a) the imaginary part of the decoded first combination signal (112) by using the real value portion of the first compounded mixed signal. Code (112) with the predictive value (1160) is configured for multiplying the imaginary part (601) of the decoded first combination signal. With the imaginary value factor of The prediction information (108) is to be obtained. The second part of the rake signal and with the Combination Contract Calculator (1161) is configured for mixing. It is linearly the first part of the prediction signal and the second part of the prediction signal and the remainder that has been decoded to obtain it. Second Combination Signal (1165) 1 1. Audio or video signal decoder In a manner consistent with claim 7, with a prediction (1160) assigned A configuration for filtering two younger frames in chronological order, where one of the two chronological frames is preceded by or behind the current frame of Combination signal, merging signal one To get it too The approximate imaginary part of The moment frame of the first combination signal. By using linear filters (1004, 1005, 1006, 1007) 1 2. Audio or video signal decoder In a manner consistent with claim 7, where the decoded First Combination signal is composed of the actual signal frame sequence and with a predictor (1160) configured for Estimation (1160a) the imaginary part of the current signal frame. By using only the current real-time frame or by using the current real-time frame and either of just one or more frames. The real value signal that precedes, or just one or more frames, the real value signal that follows. Or by using The current real value signal frame and one or more of the leading and one or more real signal frames. Frame signal, the actual value that follows 1 3. Audio or video encoder for encoding audio or signal. Multi-channel picture With two or more composite signals: encoder calculator (203) for computation of the first combination signal (204) and predictive part signal (205) by Use the first channel signal (201) and the second channel signal (202) and the prediction information (206) and the predictive direction indicator to source the predictive part signals. When mixed With signs of predictions Obtained from a combination signal merging one signal Or a received signal It is derived from the compound signal, the first contract and the prediction information (206) is the result in The second aggregation signal (2032), the first aggregation signal (204), and the second aggregation signal (2032) can be derived from the signal of the first (201) channel and the signal of the channel. The second signal (202), using the combination rule Prediction Optimizer (207) for calculation of prediction information (206) so that the remainder signal, prediction (205) will be achieved in the optimization target (208). (219) For the calculation of direction indicators, predictions that point predictions that are relevant to the rest of the prediction signals. Encoders (209) for encoding the first combination signal (204) and predictive remainder (205) to make it possible to obtain. Mixed signal Encoded one (201) and the remainder, encrypted prediction (211), and output interface (212) for mixing, merging the first one at It has been encrypted (210), the remainder signal, the encrypted forecast (211), and the prediction information (206) to make it derived. Multi-channel audio or video signal Get encrypted 1 4.Audio or video encoder In a manner consistent with claim 13, with the encoder calculator (203), it is included: mixer (2031) for the first-channel combination (201) and channel signal. The second signal (202) in two different ways. In order to obtain the first combination signal (204) and the second combination signal (2032), the predictor (2033) for inputting prediction information (206) to the compound signal. Combine one signal (204) or signal (600) that is received from one compound signal (204) to obtain a prediction signal (2035) or for prediction input (206) to. Also, the second compound signal or the signal received from the second compound signal to obtain a prediction signal (2035) that is based on direction indicators, predictions and calculators. Residual signal (2034) for calculating the prediction residual signal (205) by mixing the prediction signal (2035) and the second compounding signal (2032) or with the combination of the prediction signal (2032). Prediction (2035) and Combination signal 1 (2032) based on prediction direction indicators 1. 5.Audio or video encoder In a manner consistent with claim No. 13 or No. 14 with the signal of the first channel, the spectral representation of the sample block with the signal of the second channel is the spectral representation of the block of the sample. Where the spectral representation is a pure true spectral caran. Or substitution Pure imaginary value spectrum One with an optimized modifier (207) is configured for computation of predictive information (206) as a zero-difference real factor factor. And / or the imaginary factor that Difference, zero, and with the encoder calculator (203) included Real-to-Imaginary Converters (2070) or Imaginary-To-Real Value Converters For obtaining Representation transformation Spectral from the first mixed signal Or from a second combination signal dependent on a predictive directional indicator and with an encoder calculator (203) is configured in order to compute the signal. First Combination (204) or Second Combination Signal That depends on the pointer designation. Forecast direction And in order to calculate the rest of the signal, predictions (205) from that spectrum Has been converted And the imaginary factor 1 6. Encoders in a manner consistent with any one of Claims 13 to 15 with a prediction (2033) are configured for multiplication of the compound signal. The first signal (204) with the real part of the prediction information (2073) to derive the part of the prediction signal. For an approximation (2070) the imaginary (600) portion of one or the second combination signal. By using the first combination signal (204), alternate the second combination signal. For multiplication of the imaginary part of the mixed signal, combine the first and second signals with the imaginary part of the prediction information (2074) to obtain it. The second part of The prediction signal and where the remainder of the calculator (2034) is assigned. A configuration for formal blending. Line of signal The part of the prediction signal or signal, the second part of the prediction signal and the second combination signal or the first combination signal to provide Acquired with remaining signs, predictions (205) 1. 7. Methods for requesting encoded multi-channel audio or video decoding circles (100) Encoded multi-channel audio or video signals including The first mixed signal is encoded. That has been created based on the compounding rules for the mixing of audio or video signals of a channel. The first and the audio or video signals of the second channel of the audio signal Or multi-channel video signal The remainder of the forecast is encrypted. And forecast information That includes: decoding (110) the first combination signal that is encoded (104) in order to obtain Combination signal, combining first signal to be decoded (112) and decoded. The remainder of the signal is coded (106) in order to derive it. Decoded residual signals (114) and calculated (116) decoded multi-channel signals. With signs of Decoded first channel (117) and second transponder signal. Decoded residual signals (114), predictive information (108), and decoded first combination signals (112) so that the signal is decoded (118). Of the decoded first channel (117) and the signal of the decoded first channel The second signal to be decoded (118) is at least an approximation of the signal of The first and second transponders of the multichannel signals where the prediction information (108) is included. The actual value that is different from zero And / or imaginary part that differs from zero 1 8.Methods of encoding a multi-channel audio or video signal with two or more channels. That includes: Calculation (203), Combination signal, Combination signal, First (204), and Residual signal, Prediction (205) by using the first signal (201) and the signal of the 1st channel (201) The second (202) and the prediction information (206) so that the rest signal, the prediction when the prediction signal is combined. Derived from the compound signal Signal one Or the signal obtained from the first combination signal and the prediction information (206) is the result of the second combination signal (2032), the first combination signal (204) and the second combination signal (204). Combine two signals (2032) that can be derived from. The signal of the first signal (201) and the second signal (202) by using the computation combination law (207), the prediction information (206), so that the prediction residual signal (205) will achieve the goal of optimization (208), encoding (209), the combination of the first signal (204) and the others, the prediction (205) to obtain it. Encoded First Combination Signal (210) and Encrypted residual mixed signal (211) and mixed (212) Encoded First Combination signal ( 210) The residual signal, the encoded prediction (211) and the prediction information (206), to make it derived by the encoded multi-channel audio or video signal 1. 9. Computer program for operation When doing actions on the computer Or processor Clause 17 Clause or Clause 18 Clause 2 0. Encrypted multi-channel audio or video signal combined with an encoded first combination signal. That has been created based on the compounding rules for the mixing of signal or video signals of a channel. The first and the audio or video signals of the second channel of the audio signal Or multi-channel video signal The remainder of the predictions signal that it is encrypted. Prediction Information And a prediction direction indicator (501) that indicates the direction of the forecast. That are associated with the rest of the signal, the predictions that are encrypted