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US RE43,021 E1Granted
Picture signal transmitting method and apparatus
AssigneeSony Corporation
InventorsKatsumi Tahara, Hiromi Yoshinari
Life of this patent
Estimating the term…
Abstract
A picture type identifier, indicating one of intra-picture coding (an I-picture), forward or backward predictive coding (a P-picture) and bi-directionally predictive coding (a B-picture), is included with a picture signal when the signal is encoded and when the signal is decoded. Each of initial and subsequent encoding and decoding is a function of the included picture type.
Claims41
An apparatus for processing a digital picture signal, comprising:
- means for receiving a digital picture signal having picture type data included in a data identification area of said digital picture signal indicating one of intrapicture coding, predictive coding and bidirectionally predictive coding for respective pictures represented by said digital picture signal, said picture type data identifying an encoding structure of a group of pictures represented by said digital picture signal and further identifying each respective picture within said group of pictures so as to identify the type of encoding of said digital picture signal for each said picture;
- and
- coding means for encoding said digital picture signal as a function of said picture type data to produce an encoded digital picture signal.
An apparatus for processing an encoded digital picture signal, comprising:
- means for decoding said encoded digital picture signal to produce picture type data representing a type of encoding of said encoded digital picture signal and to produce a decoded digital picture signal, said picture type data identifying a previous encoding structure of a group of pictures represented by said encoded digital picture signal and further identifying each respective picture within said group of pictures represented by said decoded digital picture signal so as to identify the previous type of encoding for each picture represented by said decoded digital picture signal;
- and
- means for including said picture type data in a data identification area of said decoded digital picture signal to produce an output signal.
A method of processing a digital picture signal, comprising the steps of:
- receiving a digital picture signal having picture type data included in a data identification area of said digital picture signal indicating one of intrapicture coding, predictive coding and bidirectionally predictive coding for respective pictures represented by said digital picture signal, said picture type data identifying an encoding structure of a group of pictures represented by said digital picture signal and further identifying each respective picture within said group of pictures so as to identify the type of encoding of said digital picture signal for each said picture;
- and
- encoding said digital picture signal as a function of said picture type data to produce an encoded digital picture signal.
A method of processing an encoded digital picture signal, comprising the steps of:
- decoding said encoded digital picture signal to produce picture type data representing a type of encoding of said encoded digital picture signal and to produce a decoded digital picture signal, said picture type data identifying a previous encoding structure of a group of pictures represented by said encoded digital picture signal and further identifying each respective picture within said group of pictures represented by said decoded digital picture signal so as to identify the previous type of encoding for each picture represented by said decoded digital picture signal;
- and
- including said picture type data in a data identification area of said decoded digital picture signal to produce an output signal.
Decoding apparatus for decoding a previously encoded video signal comprising:
- receiving means for receiving the encoded video signal and structure information that indicates (i) an encoding structure of a group of pictures represented by the video signal, and (ii) the location of each respective picture within a said group of pictures so as to identify the type of encoding of said video signal for each said picture;
- decoding means for decoding the received encoded video signal on the basis of the structure information to generate a decoded video signal;
- and
- transferring means for transferring the generated decoded video signal and the received structure information so that, when the decoded video signal is re-encoded, the location of said respective picture or first picture within the group of pictures matches said location in said encoded video signal.
1 more element
A method of decoding a previously encoded video signal comprising the steps of:
- receiving the encoded video signal and structure information that indicates (i) an encoding structure of a group of pictures represented by the video signal, and (ii) the location of each respective picture within a said group of pictures so as to identify the type of encoding of said video signal for each said picture;
- decoding the received encoded video signal on the basis of the structure information to generate a decoded video signal;
- and
- transferring the generated decoded video signal and the received structure information so that, when the decoded video signal is re-encoded, the location of said respective picture or first picture within the group of pictures matches said location in said encoded video signal.
1 more element
Decoding apparatus for decoding a previously encoded video signal comprising:
- a receiver for receiving the encoded video signal and structure information that indicates (i) an encoding structure of a group of pictures represented by the video signal, and (ii) the location of each respective picture within a said group of pictures so as to identify the type of encoding of said video signal for each said picture;
- a decoder for decoding the received encoded video signal on the basis of the structure information to generate a decoded video signal;
- and
- a transfer unit for transferring the generated decoded video signal and the received structure information so that, when the decoded video signal is re-encoded, the location of said respective picture or first picture within the group of pictures matches said location in said encoded video signal.
1 more element
Decoding apparatus for decoding an encoded video signal obtained by a previously encoded video signal, comprising:
- generating means for generating structure information that indicates (i) an encoding structure of a group of pictures represented by the video signal, and (ii) the location of each respective picture within a said group of pictures so as to identify the type of encoding of said video signal for each said picture;
- decoding means for decoding the encoded video signal on the basis of the structure information to generate a decoded video signal;
- and
- transferring means for transferring the generated decoded video signal and the generated structure information so that, when the decoded video signal is re-encoded, the location in the group of pictures in the re-encoded video signal of said respective picture or first picture matches said location in the previously encoded video signal.
1 more element
A method of decoding an encoded video signal obtained by a previously encoded video signal, comprising the steps of:
- generating structure information that indicates (i) an encoding structure of a group of pictures represented by the video signal, and (ii) the location of each respective picture within said group of pictures so as to identify the type of encoding of said video signal for each said picture;
- decoding the encoded video signal on the basis of the structure information to generate a decoded video signal;
- and
- transferring the generated decoded video signal and the generated structure information so that, when the decoded video signal is re-encoded, the location in the group of pictures in the re-encoded video signal of said respective picture or first picture matches said location in the previously encoded video signal.
1 more element
Decoding apparatus for decoding an encoded video signal obtained by a previously encoded video signal, comprising:
- a generator for generating structure information that indicates (i) an encoding structure of a group of pictures represented by the video signal, and (ii) the location of each respective picture within said group of pictures so as to identify the type of encoding of said video signal for each said picture;
- a decoder for decoding the encoded video signal on the basis of the structure information to generate a decoded video signal;
- and
- a transfer unit for transferring the generated decoded video signal and the generated structure information so that, when the decoded video signal is re-encoded, the location in the group of pictures in the re-encoded video signal of said respective picture or first picture matches said location in the previously encoded video signal.
1 more element
Dependencies are inferred from the claim text.