RU93051542A - VIDEO DECODING METHOD AND DECODER - Google Patents

VIDEO DECODING METHOD AND DECODER

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Publication number
RU93051542A
RU93051542A RU93051542/09A RU93051542A RU93051542A RU 93051542 A RU93051542 A RU 93051542A RU 93051542/09 A RU93051542/09 A RU 93051542/09A RU 93051542 A RU93051542 A RU 93051542A RU 93051542 A RU93051542 A RU 93051542A
Authority
RU
Russia
Prior art keywords
video signal
data
base
layer
encoded
Prior art date
Application number
RU93051542/09A
Other languages
Russian (ru)
Other versions
RU2120702C1 (en
Inventor
Чанбари Мохаммед
Original Assignee
Бритиш Телекоммьюникейшнз Паблик Лимитед Компани
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from GB919102220A external-priority patent/GB9102220D0/en
Application filed by Бритиш Телекоммьюникейшнз Паблик Лимитед Компани filed Critical Бритиш Телекоммьюникейшнз Паблик Лимитед Компани
Publication of RU93051542A publication Critical patent/RU93051542A/en
Application granted granted Critical
Publication of RU2120702C1 publication Critical patent/RU2120702C1/en

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Claims (6)

1. Способ декодирования одного полученного текущего сигнала из серии двухслойных кодированных видеосигналов, каждый из которых включает слой базы кодированных данных базы и закодированные данные вектора движения и слой расширения кодированных данных расширения, которые являются разностями между некодированным видеосигналом и восстановлением слоя базы, при этом данный способ включает этапы: декодирования слоя базы для получения видеосигнала базы; декодирования слоя расширения для получения данных расширения и комбинирования видеосигнала базы и данных расширения для получения декодированного видесигнала, отличающийся тем, что способ далее включает этапы: выявления, пропущены ли какие-либо данные расширения из слоя расширения и, если это имеет место, интерполяции потерянных данных расширения из данных расширения непосредственно предшествующего полученного кодированного видеосигнала и векторов движения текущего полученного слоя базы.1. The method of decoding one received current signal from a series of two-layer encoded video signals, each of which includes a base layer of encoded base data and encoded motion vector data and an extension layer of encoded extension data, which are the differences between the uncoded video signal and the restoration of the base layer, this method includes the steps of: decoding the base layer to obtain the base video signal; decoding the expansion layer to obtain expansion data and combining the base video signal and the expansion data to obtain a decoded video signal, characterized in that the method further includes the steps of: detecting if any expansion data is skipped from the expansion layer and, if so, interpolating the lost data extensions from the extension data of the immediately preceding received encoded video signal and the motion vectors of the current received base layer. 2. Способ по п. 1, отличающийся тем, что данные расширения непосредственно предшествующего полученного кодированного видеосигнала получают путем определения разностей между непосредственно декодированным видеосигналом и шаблонным видеосигналом базы, восстановленным из слоя базы непосредственно предшествующего кодированного видеосигнала. 2. The method according to claim 1, characterized in that the extension data of the immediately preceding received encoded video signal is obtained by determining the differences between the directly decoded video signal and the base template video signal recovered from the base layer of the immediately preceding encoded video signal. 3. Способ по п.2, отличающийся тем, что декодированный видеосигнал записывают в запоминающее устройство (60) кадра. 3. The method according to claim 2, characterized in that the decoded video signal is recorded in a storage device (60) frame. 4. Способ по любому из пп. 1-3, отличающийся тем, что выявление потери данных расширения из слоя расширения осуществляют путем анализа полученного слоя расширения. 4. The method according to any one of paragraphs. 1-3, characterized in that the detection of loss of expansion data from the expansion layer is carried out by analyzing the obtained expansion layer. 5. Декодер для декодирования полученного текущего одного видеосигнала из серии двухслойных кодированных видеосигналов, каждый из которых включает слой базы кодированных данных базы и кодированные данные вектора движения, и слой расширения кодированных данных расширения, представляющих разности между некодированным видеосигналом и восстановлением непосредственно предшествующего видеосигнала базы, при этом декодер включает: первое декодирующее средство (40, 44, 46, 48, 50) для декодирования слоя базы и для получения видеосигнала базы; второе декодирующее средство (52, 54, 56) для декодирования слоя расширения и для получения данных расширения; комбинирующее средство (52) для комбинирования видеосигнала базы и данных расширения и для получения декодированного видеосигнала, отличающийся тем, что включает также средство (66) выявления потери ячейки для выявления потери каких-либо данных расширения из слоя расширения; средство интерполяции (50, 60, 62, 64) для проведения интерполяции данных, состоящих из данных расширения непосредственно предшествующего полученного кодированного видеосигнала, измененного в соответствии с векторами движения полученного текущего слоя базы; средство (52, 68) для замены любых пропущенных данных расширения данными интерполяции. 5. A decoder for decoding the received current single video signal from a series of two-layer encoded video signals, each of which includes a base layer of encoded base data and encoded motion vector data, and an extension layer of encoded extension data representing the differences between the uncoded video signal and restoration of the immediately previous base video signal, when this decoder includes: first decoding means (40, 44, 46, 48, 50) for decoding the base layer and for receiving the base video signal; second decoding means (52, 54, 56) for decoding the extension layer and for obtaining extension data; combining means (52) for combining the base video signal and the extension data and for obtaining a decoded video signal, characterized in that it also includes a cell loss detection means (66) for detecting the loss of any extension data from the expansion layer; interpolation means (50, 60, 62, 64) for interpolating data consisting of extension data of the immediately preceding received encoded video signal changed in accordance with the motion vectors of the received current base layer; means (52, 68) for replacing any missing extension data with interpolation data. 6. Декодер по п.5, отличающийся тем, что средство интерполяции выключает первое запоминающее устройство (50) кадра для записывания шаблонного видеосигнала базы, представляющего восстановление из слоя базы непосредственно предшествующего полученного кодированного видеосигнала, второе запоминающее устройство (60) кадра для записывания второго кадра, представляющего непосредственно предшествующий декодированный видеосигнал, дифференцирующее средство (62) для получения данных расширения путем вычитания шаблонного видеосигнала базы из непосредственно предшествующего декодированного видеосигнала и средство сдвига (64) для вытеснения непосредственно предыдущих данных расширения в соответствии с полученными векторами движения. 6. The decoder according to claim 5, characterized in that the interpolation means turns off the first storage device (50) of the frame for recording the base template video signal representing the recovery from the base layer of the immediately preceding received encoded video signal, the second frame memory (60) for recording the second frame representing the immediately preceding decoded video signal, differentiating means (62) for obtaining extension data by subtracting the base template video signal from sredstvenno previous decoded video signal and shift means (64) for displacing the immediately previous data expansion according to the received motion vectors.
RU93051542A 1991-02-01 1992-01-31 Method for decoding of single received current signal from sequence of two-channel encoded video signals and device which implements said method RU2120702C1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB9102220.2 1991-02-01
GB919102220A GB9102220D0 (en) 1991-02-01 1991-02-01 Method and apparatus for decoding video signals

Publications (2)

Publication Number Publication Date
RU93051542A true RU93051542A (en) 1997-12-20
RU2120702C1 RU2120702C1 (en) 1998-10-20

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RU93051542A RU2120702C1 (en) 1991-02-01 1992-01-31 Method for decoding of single received current signal from sequence of two-channel encoded video signals and device which implements said method

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US (1) US5418571A (en)
EP (1) EP0569432B1 (en)
JP (1) JP2831849B2 (en)
KR (1) KR100238509B1 (en)
AT (1) ATE152568T1 (en)
AU (1) AU651667B2 (en)
CA (1) CA2100857C (en)
DE (1) DE69219459T2 (en)
DK (1) DK0569432T3 (en)
ES (1) ES2102492T3 (en)
FI (1) FI107494B (en)
GB (1) GB9102220D0 (en)
HK (1) HK1006622A1 (en)
NO (1) NO304050B1 (en)
RU (1) RU2120702C1 (en)
SG (1) SG52360A1 (en)
WO (1) WO1992014339A1 (en)

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