Data transmission system, data transmitting apparatus and method, and scene description processing unit and method
First Claim
1. A data transmission system having a transmitting apparatus that transmits a scene description which describes the structures of one or more signals to be used to construct a scene, and a receiving apparatus that constructs the scene according to the scene description, wherein:
- said transmitting apparatus has a scene description processing means that transfers a scene description which conforms to the state of a transmission line and/or a request issued from said receiving apparatus.
1 Assignment
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Accused Products
Abstract
According to the present invention, a scene description that conforms to the state of a transmission line or the processing ability of a receiving side can be transmitted. Consequently, occurrence of a drawback such as unexpected missing of part of a scene that is unintended to a transmitting side is avoided. Even when a transmission rate is changed, signals are decoded according to a scene construction that conforms to the resultant transmission rate. A change in information needed to decode signals is explicitly reported to the receiving side. This relieves the receiving side of the necessity of sampling the information, which is needed to decode signals, from the signals. A data transmission system consists mainly of a server that transmits a scene description which describes the structure of multimedia data to be used to construct a scene, and a receiving terminal that constructs the scene according to the scene description. The server includes a scene description processing unit that transfers a scene description which conforms to the state of a transmission line and/or a request issued from the receiving terminal.
29 Citations
78 Claims
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1. A data transmission system having a transmitting apparatus that transmits a scene description which describes the structures of one or more signals to be used to construct a scene, and a receiving apparatus that constructs the scene according to the scene description, wherein:
said transmitting apparatus has a scene description processing means that transfers a scene description which conforms to the state of a transmission line and/or a request issued from said receiving apparatus. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39)
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14. A data transmitting method for transmitting a scene description that describes the structures of one or more signals to be used to construct a scene, and constructing the scene according to the scene description, wherein:
a scene description that conforms to the state of a transmission line and/or a request issued from a receiving side is transmitted.
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27. A data transmitting apparatus for transmitting a scene description that describes the structures of one or more signals to be used to construct a scene, comprising:
a scene description processing means for transferring a scene description that conforms to the state of a transmission line and/or a request issued from a receiving side.
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40. A data transmitting method for transmitting a scene description that describes the structures of one or more signals to be used to construct a scene, wherein:
a scene description that conforms to the state of a transmission line and/or a request issued from a receiving side is transmitted. - View Dependent Claims (41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52)
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53. A scene description processing unit for processing a scene description that describes the structures of one or more signals to be used to construct a scene, wherein:
when a scene description must be transmitted over a transmission line, a scene description that conforms to the state of the transmission line and/or a request issued from a receiving side is transferred. - View Dependent Claims (54, 55, 57, 58, 59, 60, 61, 62, 63, 64, 65)
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66. A scene description processing method for processing a scene description that describes the structures of one or more signals to be used to construct a scene, wherein:
when a scene description must be transmitted over a transmission line, a scene description that conforms to the state of the transmission line and/or a request issued from a receiving side is transferred. - View Dependent Claims (67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78)
Specification