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US 8,078,812 B2Granted
Information terminals sharing contents in a network, information sharing method and P2P system and point system using the same
AssigneeHitachi, Ltd.
InventorsTakayuki Yamamoto, Shigeto Oeda
Life of this patent
Estimating the term…
Abstract
Information terminal and information sharing method are provided which consider survival time of contents at a transmission destination and propagate the contents widely so as to be suitable for contents sharing. In the information terminal and information sharing method, contents allotted with survival time is received, the survival time allotted to the contents is changed, contents allotted with the changed survival time is transmitted to a different information terminal, and the contents is deleted after the changed survival time has expired.
Claims30
An information terminal comprising:
- a network interface to receive contents containing survival time, wherein the survival time is preset before being received by said network interface, by a transmission side of the contents;
- and
- a central processing unit to control the information terminal,
- wherein the central processing unit changes the survival time contained in the contents received by said network interface,
- wherein the central processing unit transmits said contents containing the survival time to a different information terminal via a network,
- wherein the central processing unit deletes said contents after the survival time changed by said central processing unit has expired, and
- wherein the survival time contained in the contents is changed by the central processing unit before the contents are transmitted by the central processing unit.
4 more elements
An information sharing method comprising:
- a reception step of receiving contents containing survival time, wherein the survival time is preset before being received, by a transmission side of the contents;
- a survival time change step of changing the survival time contained in said contents received in the reception step, such that the survival time extinguishes at an hour later than an hour for the reception;
- a transmission step for transmitting the contents containing a survival time changed in said survival time change step to a different information terminal via a network;
- and
- a delete step for deleting said contents after the survival time changed in said survival time change step has expired,
- wherein the survival time contained in the contents is changed by the survival time change step before the contents are transmitted by the transmission step.
3 more elements
A P2P system having first, second and third information terminals and sharing contents, wherein
- said first information terminal transmits contents containing survival time which is preset, to said second information terminal via a network;
- said second information terminal changes the survival time contained in said transmitted content;
- and
- said second information terminal transmits said contents containing survival time to said third information terminal via a network, whereby
- said contents is shared,
- wherein the survival time contained in the contents is changed by said second information terminal before the contents are transmitted by said second information terminal, and
- wherein the contents are deleted after the survival time changed by said second information terminal has expired.
4 more elements
An information terminal comprising a network interface for receiving contents, memory for storing contents, transmission unit for transmitting contents, survival time change unit for changing survival time of contents and delete unit for deleting contents, wherein
- said network interface receives contents containing survival time, wherein the survival time is preset before being received by said network interface, by a transmission side of the contents;
- said memory includes received contents memory for storing the contents received by said network interface and unpublished contents memory for storing contents desired not to be publicized to a different information terminal;
- said survival time change unit changes survival time contained in the contents stored by said reception contents memory;
- said transmission unit transmits, when a different information terminal searches contents and the contents to be searched is stored in said received contents memory, said contents containing survival time to said different information terminal via a network, but does not transmit said contents to said different information terminal when said contents is stored in said unpublished contents memory;
- and
- said delete unit deletes said contents stored by said received contents memory after the survival time changed by said survival time change unit has expired,
- wherein the survival time contained in the contents is changed by the survival time change unit before the contents are transmitted by the transmission unit.
4 more elements
An information terminal comprising:
- a network interface to receive contents containing survival time, wherein the survival time is preset before being received by said network interface, by a transmission side of the contents;
- and
- a central processing unit to control the information terminal,
- received contents memory for storing the contents received by said network interface;
- survival time change unit for changing the survival time contained in said contents stored in said received contents memory;
- transmission unit for transmitting, when contents is searched from a different information terminal and the contents to be searched is stored in said received contents memory, said contents containing the survival time to said different information terminal via a network;
- and
- delete unit for deleting the contents stored in said received contents memory after the survival time changed by said survival time change unit has expired,
- wherein the survival time contained in the contents is changed by the survival time change unit before the contents are transmitted by the transmission unit.
6 more elements
An information terminal comprising:
- network interface for receiving first contents containing survival time and second contents containing survival time, wherein the survival times of the first contents and the second contents, are preset before being received by said network interface, by a transmission side of the first contents and the second contents;
- survival time change unit for changing the survival times contained in the first contents and second contents received by said network interface;
- transmission unit for transmitting the first contents and second contents containing survival times to a different information terminal via a network;
- and
- delete unit for deleting the first contents and second contents after the survival times changed by said survival time change unit have expired, wherein
- said survival time change unit handles the survival time of said first contents preferentially to the survival time of said second contents,
- wherein the survival times contained in the first and second contents is changed by the survival time change unit before the contents are transmitted by the transmission unit.
4 more elements
A point system comprising an information terminal, an information distribution enterpriser terminal and a point management center, wherein
- said information distribution enterpriser terminal transmits utilization registration data of the point system to said point management center via a network;
- said point management center allows utilization of the point system on the basis of the transmitted utilization registration data;
- said information distribution enterpriser terminal transmits, to said point management center, metadata of point contents desired to be transmitted to said information terminal via a network;
- said point management center calculates a survival time extension coefficient representing a coefficient of extension of the survival time of the point contents and transmits it to said information distribution enterpriser terminal via a network;
- and
- said information terminal receives said point contents wherein a survival time is set for said points contents before being received by said information terminal, by the transmission side of said points contents, wherein said information terminal changes the survival time of said received point contents by using said survival time extension coefficient, transmits said point contents containing survival time to a different information terminal via a network, and deletes said point contents after said changed survival time has expired,
- wherein the survival time of said points contents is changed by said information terminal before the points contents are transmitted to said different information terminal.
4 more elements
A point system comprising an information terminal, an information distribution enterpriser terminal and a point management center, wherein
- said information distribution enterpriser terminal transmits utilization registration data of the point system to said point management center via a network;
- said point management center allows utilization of the point system on the basis of the transmitted utilization registration data;
- said information distribution enterpriser terminal transmits point contents containing allowed survival time to said information terminal via a network;
- and
- said information terminal receives the point contents and normal contents containing survival time but not allowed for utilization of the point system, wherein the survival time is set before being received by said information terminal, by the transmission side of said points contents, wherein said information terminal changes the survival times of said received point contents and normal contents, transmits said point contents and normal contents containing the survival times to a different information terminal via a network, deletes said point contents and normal contents after said changed survival times have expired, handles the survival time of said point contents preferentially to the survival time of said normal contents, and gains a point in compensation for the preferential handling,
- wherein the survival time is changed by said information terminal before the points contents and normal contents are transmitted to said different information terminal.
3 more elements
An information terminal comprising:
- a network interface to receive contents containing survival time and transmit contents containing survival time to a different information terminal via a network;
- a recording unit to record contents received by a network interface;
- and
- a central processing unit to control the information terminal,
- wherein the survival time contained in the contents recorded in the recording unit is changed by the central processing unit before the contents is transmitted to a different information terminal from the network interface;
- wherein the contents recorded in the recording unit is deleted after the survival time changed central processing unit has expired;
- and
- wherein the survival time is set before being received by said network interface, by the transmission side of the contents.
5 more elements
Dependencies are inferred from the claim text.