Multimedia data transmitting apparatus and multimedia data receiving apparatus
First Claim
1. A multimedia data transmitting apparatus which transmits stored multimedia data to a multimedia data receiving apparatus via a network in response to a transmission request from the multimedia data receiving apparatus, said multimedia data transmitting apparatus comprising:
- a storage in which the multimedia data and an update-point information of a stream included in the multimedia data are stored;
a request receiver that receives, from the multimedia data receiving apparatus, a transmission request message, the transmission request message requesting transmission of the multimedia data and transmission of the update-point information of the stream included in the multimedia data which are stored in said storage;
an update-point information obtainer that obtains the update-point information of the stream, from the stream included in the multimedia data stored in said storage; and
an information transmitter that transmits requested multimedia data and the update-point information of the stream included in the multimedia data, to the multimedia data receiving apparatus,wherein the update-point information of the stream includes update details of first data representing a structure of the stream included in the multimedia data and one of position information indicating a position in the stream at which the update details of the first data become valid and time information indicating a time in the stream at which the update details of the first data become valid, andwherein, when the request receiver receives the transmission request message specifying a reproduction speed that is faster than a specified reproduction speed, said information transmitter;
transmits, to the multimedia data receiving apparatus, portions of the stream included in the multimedia data, as a stream that is required for reproduction according to the reproduction speed that is faster than the specified reproduction speed; and
transmits the update-point information of the stream included in the multimedia data, when the reproduction speed specified in the transmission request message for the multimedia data becomes the specified reproduction speed.
2 Assignments
0 Petitions
Accused Products
Abstract
To provide, in a multimedia content server which stores multimedia data and transmits the stored multimedia data to a terminal, a technique which allows the terminal to properly detect and process version up of section data even when random access for trick play, and the like, is performed. Upon receiving a data transmission request from a multimedia data receiving apparatus, a multimedia data transmitting apparatus transmits the requested multimedia data and notifies data necessary for obtaining an update-point of section data included in the multimedia data or a URI which enables the obtaining of the data, to the multimedia data receiving apparatus.
16 Citations
17 Claims
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1. A multimedia data transmitting apparatus which transmits stored multimedia data to a multimedia data receiving apparatus via a network in response to a transmission request from the multimedia data receiving apparatus, said multimedia data transmitting apparatus comprising:
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a storage in which the multimedia data and an update-point information of a stream included in the multimedia data are stored; a request receiver that receives, from the multimedia data receiving apparatus, a transmission request message, the transmission request message requesting transmission of the multimedia data and transmission of the update-point information of the stream included in the multimedia data which are stored in said storage; an update-point information obtainer that obtains the update-point information of the stream, from the stream included in the multimedia data stored in said storage; and an information transmitter that transmits requested multimedia data and the update-point information of the stream included in the multimedia data, to the multimedia data receiving apparatus, wherein the update-point information of the stream includes update details of first data representing a structure of the stream included in the multimedia data and one of position information indicating a position in the stream at which the update details of the first data become valid and time information indicating a time in the stream at which the update details of the first data become valid, and wherein, when the request receiver receives the transmission request message specifying a reproduction speed that is faster than a specified reproduction speed, said information transmitter; transmits, to the multimedia data receiving apparatus, portions of the stream included in the multimedia data, as a stream that is required for reproduction according to the reproduction speed that is faster than the specified reproduction speed; and transmits the update-point information of the stream included in the multimedia data, when the reproduction speed specified in the transmission request message for the multimedia data becomes the specified reproduction speed. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A multimedia data receiving apparatus which receives multimedia data and update-point information of a stream included in the multimedia data, from a multimedia data transmitting apparatus, said multimedia data receiving apparatus comprising:
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a receiver that receives the multimedia data and the update-point information of the stream included in the multimedia data; and a reproduction controller that controls one of starting and changing of a reproduction processing for the multimedia data, according to the update-point information of the stream, wherein the update-point information of the stream includes update details of first data representing a structure of the stream included in the multimedia data, and one of position information indicating a position in the stream at which the update details of the first data become valid and time information indicating a time in the stream at which the update details of the first data become valid. - View Dependent Claims (15, 16, 17)
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Specification