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US RE43,238 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.
Claims53
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.
Re-encoding apparatus for re-encoding a decoded video signal obtained by decoding a previously encoded video signal, comprising:
- first receiving means for receiving the previously encoded video signal and picture type information that indicates picture type in the previously encoded video signal;
- decoding means for decoding the received previously encoded video signal on the basis of said received picture type information to generate said decoded video signal;
- transferring means for transferring the decoded video signal and the picture type information;
- second receiving means for receiving the transferred decoded video signal and picture type information;
- encoding means for re-encoding the received decoded video signal utilizing the received picture type information to generate a re-encoded video signal;
- and
- controlling means for controlling said encoding means so as to match the picture type in said re-encoded video signal with the picture type in said previously encoded video signal.
4 more elements
A method of re-encoding a decoded video signal obtained by decoding a previously encoded video signal, comprising the steps of:
- receiving the previously encoded video signal and picture type information that indicates picture type in the previously encoded video signal;
- decoding the received previously encoded video signal on the basis of said received picture type information to generate said decoded video signal;
- transferring the decoded video signal and the picture type information;
- receiving the transferred decoded video signal and picture type information;
- re-encoding the received decoded video signal utilizing the received picture type information to generate a re-encoded video signal;
- and
- controlling said re-encoding so as to match the picture type in said re-encoded video signal with the picture type in said previously encoded video signal.
4 more elements
Re-encoding apparatus for re-encoding a decoded video signal obtained by decoding a previously encoded video signal, comprising:
- a first receiver for receiving the previously encoded video signal and picture type information that indicates picture type in the previously encoded video signal;
- a decoder for decoding the received previously encoded video signal on the basis of said received picture type information to generate said decoded video signal;
- a transfer unit for transferring the decoded video signal and the picture type information;
- a second receiver for receiving the transferred decoded video signal and picture type information;
- an encoder for re-encoding the received decoded video signal utilizing the received picture type information to generate a re-encoded video signal;
- and
- a controller for controlling said encoder so as to match the picture type in said re-encoded video signal with the picture type in said previously encoded video signal.
4 more elements
Re-encoding apparatus for re-encoding a decoded video signal obtained by decoding a previously encoded video signal, comprising:
- generating means for generating picture type information that indicates picture type in the previously encoded video signal;
- decoding means for decoding the previously encoded video signal on the basis of the generated picture type information to generate the decoded video signal;
- transferring means for transferring the decoded video signal and the generated picture type information;
- receiving means for receiving the decoded video signal and the transferred picture type information;
- encoding means for re-encoding the received decoded video signal utilizing the received picture type information to generate a re-encoded video signal;
- and
- controlling means for controlling said encoding means so as to match the picture type in said re-encod video signal with the picture type in said previously encoded video signal.
4 more elements
A method of re-encoding a decoded video signal obtained by decoding a previously encoded video signal, comprising the steps of:
- generating picture type information that indicates picture type in the previously encoded video signal;
- decoding the previously encoded video signal on the basis of the generated picture type information to generate the decoded video signal;
- transferring the decoded video signal and the generated picture type information;
- receiving the decoded video signal and the transferred picture type information;
- re-encoding the received decoded video signal utilizing the received picture type information to generate a re-encoded video signal;
- and
- controlling the re-encoding so as to match the picture type in said re-encod video signal with the picture type in said previously encoded video signal.
4 more elements
Re-encoding apparatus for re-encoding a decoded video signal obtained by decoding a previously encoded video signal, comprising:
- a generator for generating picture type information that indicates picture type in the previously encoded video signal;
- a decoder for decoding the previously encoded video signal on the basis of the generated picture type information to generate the decoded video signal;
- a transfer unit for transferring the decoded video signal and the generated picture type information;
- a receiver for receiving the decoded video signal and the transferred picture type information;
- an encoder for re-encoding the received decoded video signal utilizing the received picture type information to generate a re-encoded video signal;
- and
- a controller for controlling said encoding means so as to match the picture type in said re-encod video signal with the picture type in said previously encoded video signal.
4 more elements
An encoding apparatus for encoding a video signal obtained by decoding a previously encoded video signal, comprising:
- receiving means for receiving the decoded video signal and picture type information that indicates picture type in the previously encoded video signal;
- encoding means for encoding the video signal received by said receiving means utilizing the received picture type information to generate a re-encoded video signal;
- and
- controlling means for controlling said encoding means so as to match picture type in said re-encoded video signal with picture type in said previously encoded video signal.
1 more element
A method of encoding a video signal obtained by decoding a previously encoded video signal, comprising the steps of:
- receiving the decoded video signal and picture type information that indicates picture type in the previously encoded video signal;
- encoding the received video signal utilizing the received picture type information to generate a re-encoded video signal;
- and
- controlling said encoding so as to match picture type in said re-encoded video signal with picture type in said previously encoded video signal.
1 more element
An encoding apparatus for encoding a video signal obtained by decoding a previously encoded video signal, comprising:
- a receiver for receiving the decoded video signal and picture type information that indicates picture type in the previously encoded video signal;
- an encoder for encoding the video signal received by said receiver utilizing the received picture type information to generate a re-encoded video signal;
- and
- a controller for controlling said encoder so as to match picture type in said re-encoded video signal with picture type in said previously encoded video signal.
1 more element
Dependencies are inferred from the claim text.