US 7,610,605 B2Granted

Method and apparatus for conversion and distribution of data utilizing trick-play requests and meta-data information

AssigneeSony Corporation

InventorsShinji Negishi, Hideki Koyanagi, Yoichi Yagasaki

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Abstract

A data distribution system includes a server apparatus and a decoding terminal. In the server apparatus, the access unit information of data to be transmitted is read from a data storage unit in accordance with a trick play request. The access unit information is converted for a trick play in a data conversion unit. The data to be transmitted is converted in a multiplexing unit into trick play data in accordance with the access unit information having been converted. Then, the trick play data is transmitted from the server apparatus to the decoding terminal.

Claims9

Dependent claims

A data conversion apparatus comprising:

input means for inputting a trick play request by a user;
data storage means for storing normal play stream data and access unit information for normal play;
wherein
the access unit information comprises data size information, decoding time information presentation time information and storage location information, for each predetermined processing unit of the stream data;
data conversion means for reading, from said data storage means, the access unit information for normal play in accordance with the trick play request input from said input means, and converting the access unit information for normal play into access unit information for the trick play in accordance with a type of trick play specified in the trick play request;
and
scheduling means for generating, based on the access unit information converted for the trick play, schedule information for multiplexing stream data converted for the trick play;
and
multiplexing means for selecting the stream data to be packetized from the data storage means based on the schedule information and reading data of a length specified in the schedule information and adding a packet header in accordance with the schedule information and generating the stream data converted for the trick play;
wherein said data storage means stores, as the access unit information, data size information, decoding time information, presentation time information, occupancy information of an imaginary buffer for controlling the amount of codes being generated, coding type information indicating a type of coding, and a closed GOP flag, for each predetermined processing unit of the transmission data.

7 more elements

A data conversion apparatus for converting access unit information, the data conversion apparatus comprising:

request input means for inputting a trick play request by a user;
data input means for externally inputting elementary stream data;
data retrieving means for retrieving, from the elementary stream data input from said data input means, access unit information for normal play, associated with the elementary stream data;
data storage means for storing stream data for normal play and said access unit information for normal play, retrieved by said data retrieving means;
data conversion means for reading from said data storage means the access unit information for normal play in accordance with the trick play request input from said request input means, and
converting the access unit information for normal play into access unit information for a trick play in accordance with a type of trick play specified in the trick play request;
scheduling means for generating, based on the access unit information for the trick play, schedule information for multiplexing stream data converted for the trick play;
and
multiplexing means for selecting the stream data to be packetized from the data storage means based on the schedule information and reading data of a length specified in the schedule information and adding a packet header in accordance with the schedule information and generating the stream data converted for the trick play;
wherein the access unit information comprises data size information, decoding time information presentation time information and storage location information, for each predetermined processing unit of the stream data;
and
wherein said data retrieving means retrieves from the elementary stream data, as the access unit information, data size information, decoding time information, presentation time information, occupancy information of an imaginary buffer for controlling the amount of codes being generated, coding type information indicating a type of coding, and a closed GOP flag, for each predetermined processing unit of the elementary stream data.

9 more elements

A data conversion apparatus for converting access unit information, the data conversion apparatus comprising:

request input means for inputting a trick play request by a user;
encoding means for externally inputting a source signal, coding the source signal into an elementary stream data, and generating access unit information for normal play, associated with the elementary stream data;
data storage means for storing normal play stream data and said access unit information for normal play, generated by said encoding means;
data conversion means for reading from said data storage means the access unit information for normal play in accordance with the trick play request input from said request input means, and converting the access unit information for normal play into access unit information for a trick play in accordance with a type of trick play specified in the trick play request;
scheduling means for generating, based on the access unit information for the trick play, schedule information for multiplexing stream data converted for the trick play;
and
multiplexing means for selecting the stream data to be packetized from the data storage means based on the schedule information and reading data of a length specified in the schedule information and adding a packet header in accordance with the schedule information and generating the stream data converted for the trick play;
wherein the access unit information comprises data size information, decoding time information presentation time information and storage location information, for each predetermined processing unit of the stream data;
and
wherein said encoding means generates, as the access unit information, data size information, decoding time information, presentation time information, occupancy information of an imaginary buffer for controlling the amount of codes being generated, coding type information indicating a type of coding, and a closed GOP flag, for each predetermined processing unit of the elementary stream data.

7 more elements

A data distribution system comprising:

a data distribution apparatus for distributing data;
and
a receiving terminal, connected to said data distribution apparatus via a communications line, for receiving data from said data distribution apparatus;
said data distribution apparatus comprising:
request input means for inputting a trick play request by a user;
data input means for externally inputting elementary stream data;
data retrieving means for retrieving, from the elementary stream data input from said data input means, access unit information for normal play, associated with the elementary stream data;
data storage means for storing normal play stream data and said access unit information for normal play, retrieved by said data retrieving means;
data conversion means for reading from said data storage means the access unit information for normal play in accordance with the trick play request input from said request input means, and converting the access unit information for normal play into access unit information for a trick play in accordance with a type of trick play specified in the trick play request;
scheduling means for generating, based on the access unit information for the trick play, schedule information for multiplexing stream data converted for the trick play;
multiplexing means for selecting the stream data to be packetized from the data storage means based on the schedule information and reading data of a length specified in the schedule information and adding a packet header in accordance with the schedule information and generating the stream data converted for the trick play;
wherein the access unit information comprises data size information, decoding time information presentation time information , occupancy information of an imaginary buffer for controlling the amount of codes being generated, coding type information indicating a type of coding, and a closed GOP flag, for each predetermined processing unit of the stream data;
said receiving terminal comprising:
receiver means for receiving the trick play data from said transmitter means in accordance with the trick play request;
and
decoding means for decoding the trick play data received by said receiver means.

13 more elements

A data distribution system comprising:

a data distribution apparatus for distributing data;
and
a receiving terminal, connected to said data distribution apparatus via a communications line, for receiving data from said data distribution apparatus;
said data distribution apparatus comprising:
request input means for inputting a trick play request by a user;
encoding means for externally inputting a source signal, coding the source signal into elementary stream data, and generating access unit information for normal play, associated with the elementary stream data;
data storage means for storing normal play stream data and said access unit information for normal play, generated by said encoding means;
data conversion means for reading from said data storage means the access unit information for normal play in accordance with the trick play request input from said request input means, and converting the access unit information for normal play into access unit information for a trick play in accordance with a type of trick play specified in the trick play request;
scheduling means for generating, based on the access unit information for the trick play, schedule information for multiplexing stream data converted for the trick play;
multiplexing means for selecting the stream data to be packetized from the data storage means based on the schedule information and reading data of a length specified in the schedule information and adding a packet header in accordance with the schedule information and generating the stream data converted for the trick play;
wherein the access unit information comprises data size information, decoding time information presentation time information, occupancy information of an imaginary buffer for controlling the amount of codes being generated, coding type information indicating a type of coding, and a closed GOP flag, for each predetermined processing unit of the stream data;
said receiving terminal comprising:
receiver means for receiving the trick play data from said transmitter means in accordance with the trick play request;
and
decoding means for decoding the trick play data received by said receiver means.

12 more elements

Dependencies are inferred from the claim text.

Facts

Application: 09/878,282Filed 12 Jun 2001
Priority: JP P2000-17900114 Jun 2000
Published: US 2002/0016970 A17 Feb 2002
Granted: 27 Oct 2009
Term ends: Not estimatedThe source records don’t support an estimate.

Classification8 codes

H04N 21/23106
Content storage operation, e.g. caching movies for short term storage, replicating data over plural servers, prioritizing data for deletion:…
H04N 5/783
On tape: adaptations for reproducing at a rate different from the recording rate
H04N 7/17336
Transmission or handling of upstream communications: handling of requests in head-ends
H04N 21/23406
Processing of video elementary streams, e.g. splicing of video streams or manipulating encoded video stream scene graphs: involving management of…

Family

US 2002/0016970 A1Pre-grant publication · published 7 Feb 2002
US 7,610,605 B2This patent

From the US filing history. Foreign family members aren’t listed.

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