Method and system for restricting content redistribution
First Claim
Patent Images
1. A communication device capable of transmitting content to another communication device, comprising:
- determining means for determining whether said another communication device has a function for restricting redistribution of content according to redistribution restriction information whereby the another communication device prevents transmitting the content, which was transmitted from the communication device, to a third communication device based on said redistribution restriction information; and
transmitting means for transmitting said content to which said redistribution restriction information is appended when it is determined by said determining means that said another communication device to which said content is to be transmitted is provided with a function for restricting redistribution of said content.
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Abstract
A content server 10, in transmitting content appended with redistribution restriction information to a communication terminal 50, determines whether communication terminal 50 has a redistribution restriction function on the basis of identification data contained in a user agent header contained in a HTTP message transmitted from communication terminal 50. When the determination is affirmative, content server 10 transmits to communication terminal 50 the content via the Internet 20, gateway server 30, and mobile packet communication network 40.
33 Citations
24 Claims
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1. A communication device capable of transmitting content to another communication device, comprising:
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determining means for determining whether said another communication device has a function for restricting redistribution of content according to redistribution restriction information whereby the another communication device prevents transmitting the content, which was transmitted from the communication device, to a third communication device based on said redistribution restriction information; and transmitting means for transmitting said content to which said redistribution restriction information is appended when it is determined by said determining means that said another communication device to which said content is to be transmitted is provided with a function for restricting redistribution of said content. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A communication device capable of transmitting content to another communication device, comprising:
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determining means for determining whether said another communication device has a function for restricting redistribution of content to which redistribution restriction information is appended; and transmitting means for transmitting said content to which said restriction information is appended when it is determined by said determining means that said another communication device to which said content is to be transmitted is provided with a function for restricting redistribution of said content, wherein said determining means comprises; acquisition means for acquiring first identification information from said another communication device for identifying whether said another communication device has said function for restricting redistribution of said content; and memory storage means for storing second identification information for identifying communication devices having said function for restricting redistribution of said content, wherein said determining means determines whether said first identification information acquired by said acquisition means corresponds to any of second identification information stored in said memory storage means, and decides that said another communication device has said function for restricting redistribution of said content when it is determined that said first identification information acquired by said acquisition means corresponds to any of second identification information stored in said memory storage means.
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17. A transmission restriction method for use in a communication device capable of transmitting content to another communication device, comprising:
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detecting an instruction for transmitting said content to said another communication device where said content is appended with redistribution restriction information instructing said another communication device to restrict output of said content to an external device; detecting, after detecting an instruction for transmitting said content, that said another communication device has a redistribution restriction function for restricting output of said content to an external device according to said redistribution restriction information whereby said another communication device prevents transmitting the content, which was transmitted from the communication device, to the external device according to said redistribution restriction information; and transmitting, after detecting that said another communication device has a redistribution restriction function, said content to said another communication device. - View Dependent Claims (18, 19, 20, 21, 22, 23)
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24. A transmission restriction method for use in a communication device capable of transmitting content to another communication device, comprising:
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determining whether said another communication device has a function for restricting redistribution of content to which redistribution restriction information is appended; and transmitting said content to which said restriction information is appended when it is determined that said another communication device to which said content is to be transmitted is provided with a function for restricting redistribution of said content, wherein determining comprises; acquiring first identification information from said another communication device for identifying whether said another communication device has said function for restricting redistribution of said content; and storing second identification information for identifying communication devices having said function for restricting redistribution of said content, wherein determining whether said another communication device has a function for restricting redistribution of content to which redistribution restriction information is appended comprises determining whether said acquired first identification information corresponds to any of the stored second identification information, and deciding that said another communication device has said function for restricting redistribution of said content when it is determined that said acquired first identification information corresponds to any of the stored second identification information.
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Specification