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Communication method and apparatus with modification of routing path by intermediate relay apparatus
| Details |
Inventors: Sato, Hiroaki; Okazaki, Hiroshi; Suzuki, Shigeo; Fukasawa, Toshihiko;
Assignee: Canon Kabushiki Kaisha (Tokyo, JP)
Primary Examiner: Dinh; Dung C.
Assistant Examiner:
Attorney, Agent or Firm: Morgan & Finnegan, L.P.
A communication apparatus, a communication system, and a communication method are provided for relaying and receiving data from an information source which presents data services such as video data services via a network such as Internet. With this configuration, the service data can be dynamically changed and a digest corresponding to such a change can be presented. Also with this configuration, a communication apparatus, a communication system, and a communication method are provided which are capable of reducing the load of the whole network and relaying and receiving data at high efficiency. |
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DETAILED DESCRIPTION It is an object of the present invention to provide a communication method, a communication apparatus, and a communication system capable of solving the above-described problems.
The invention has been made in order to solve the above problems and aims at providing a communication method, a communication apparatus, and a communication system with such a communication apparatus, in which a portion of data from an information source is stored, and the stored data is supplied to a client in response to an instruction from the client.
According to a preferred embodiment of the invention, a communication apparatus interposed between an information source and a client via a network, is provided which comprises: storage means for storing a portion of data sent from the information source in accordance with setting information; and delivery means for delivering the data stored in the storage means to the client in response to a request from the client.
Another object of the invention is to provide a communication method, a communication apparatus, and a communication system with such a communication apparatus, in which an information source is requested to supply data in response to a request from a client, at least a portion of the data transmitted from the information source in response to the request is stored, and a predetermined amount of the stored data is transmitted.
Still another object of the invention is to provide a communication method, a communication apparatus, and a communication system with such a communication apparatus, in which an information source is periodically requested to supply data at a predetermined interval, a portion of the data is stored, and the stored data is transmitted as desired.
A further object of the invention is to provide a communication method providing good communication efficiency.
A still further object of the invention is to provide a communication method, a communication apparatus, and a communication system with a novel function
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