Information delivering system, information delivering apparatus, information delivering method and computer readable information recording medium

• US 20050138372A1
• Filed: 05/25/2004
• Published: 06/23/2005
• Est. Priority Date: 12/22/2003
• Status: Abandoned Application

• Current Assignee: Fujitsu Limited
• Original Assignee: Fujitsu Limited
• Inventors: Kajihara, Masaru, Kuramoto, Takayuki, Fukao, Kouji
• Application Number:
  US10/853,891
• Publication Number:
  US 20050138372A1
• Time in Patent Office: Days
• US Class Current: 713/165
• CPC Class Codes: H04L 63/04 for providing a confidential data exchange among entities communicating through data packet networks

Abstract

A delivery apparatus ciphers main contents for each predetermined time interval, includes deciphering information for the predetermined time interval part of the main contents thus ciphered in CM contents and sending it out, and sends out the relevant predetermined time interval part of the main contents ciphered after sending out of the CM contents including the deciphering information.

Claims

1. An information delivering system for delivering predetermined first information and predetermined second information from a delivering station to a receiving terminal,

wherein the delivering station comprises:

a ciphering part ciphering the second information for each predetermined time interval;

a first information sending out part including deciphering information for the predetermined time interval part of the second information ciphered by said ciphering part in the first information and sending it out; and

second information sending out part sending out the relevant predetermined time interval part of the second information ciphered by said ciphering part after said first information sending out part sends out the first information including the relevant deciphering information, and

wherein after receiving the first information and the second information, the receiving terminal deciphers the predetermined time interval part of the second information with the use of the relevant deciphering information included in the first information, and provides the thus-deciphered information for a user.

2. The information delivering system as claimed in claim 1, wherein:

said delivering station further comprises;

an ciphering interrupting part interrupting ciphering performed by said ciphering part, and

wherein, when ciphering is interrupted by said ciphering interrupting part, said second information sending out part sends out the relevant predetermined time interval part of the second information in a state of not being ciphered.

3. The information delivering system as claimed in claim 1, wherein:

said first information sending out part of said delivering station disperses the deciphering information temporally with respect to the first information when including the deciphering information in the first information and sending it out; and

said receiving terminal collects the deciphering information once dispersed temporally in the first information sent out from said delivering station so as to obtain the original set of the deciphering information, the relevant predetermined time interval part of the first information being able to be deciphered only with the use of the thus-obtained original set of the relevant deciphering information.

4. The information delivering system as claimed in claim 1, wherein:

said second information comprises predetermined digital contents and said first information comprises predetermined advertisement contents.

5. An information delivering apparatus delivering predetermined first information and predetermined second information, comprising:

a ciphering part ciphering the second information for each predetermined time interval;

a first information sending out part including deciphering information for the predetermined time interval part of the second information ciphered by said ciphering part in the first information and sending it out; and

second information sending out part sending out the relevant predetermined time interval part of the second information ciphered by said ciphering part after said first information sending out part sends out the first information including the deciphering information.

6. The information delivering apparatus as claimed in claim 5, further comprising:

an ciphering interrupting part interrupting ciphering performed by said ciphering part, and

wherein, when ciphering is interrupted by said ciphering interrupting part, said second information sending out part sends out the relevant predetermined time interval part of the second information in a state of not being ciphered.

7. The information delivering apparatus as claimed in claim 5, wherein:

said first information sending out part disperses the deciphering information temporally with respect to the first information when including the deciphering information in the first information and sending it out.

8. The information delivering apparatus as claimed in claim 5, wherein:

said second information comprises predetermined digital contents and said first information comprises predetermined advertisement contents.

9. An information delivering method of delivering predetermined first information and predetermined second information from a delivering station to a receiving terminal, comprising the steps of:

a) ciphering the second information for each predetermined time interval in the delivering station;

b) including deciphering information for the predetermined time interval part of the second information ciphered by said ciphering part in the first information and sending it out in the delivering station;

c) sending out from the delivering station the relevant predetermined time interval part of the second information ciphered in said step a) after said the first information including the deciphering information is sent out in said step b), and

wherein after receiving the first information and the second information, the receiving terminal deciphers the predetermined time interval part of the second information with the use of the relevant deciphering information, and provides the thus-deciphered information for a user.

10. The information delivering method as claimed in claim 9, further comprising the step of:

d) interrupting ciphering performed by said ciphering part in the delivering station, and

wherein, when ciphering is interrupted in said step d), the relevant predetermined time interval part of the second information is sent out from the delivering station in a state of not being ciphered.

11. The information delivering method as claimed in claim 9, wherein:

in said step b), the deciphering information is dispersed temporally with respect to the first information when the deciphering information included is sent out included in the first information, and

wherein said receiving terminal collects the deciphering information once dispersed temporally in the first information sent out from said delivering station so as to obtain the original set of the deciphering information, the relevant predetermined time interval part of the first information being able to be deciphered only with the use of the thus-obtained original set of the relevant deciphering information.

12. The information delivering method as claimed in claim 9, wherein:

said second information comprises predetermined digital contents and said first information comprises predetermined advertisement contents.

13. A computer readable information recording medium having a program stored therein, which program causes a computer to deliver predetermined first information and predetermined second information, said program comprising instructions for causing the computer to perform the steps of:

a) ciphering the second information for each predetermined time interval;

b) including deciphering information for the predetermined time interval part of the second information ciphered in said step a) in the first information and sending it out; and

c) sending out the relevant predetermined time interval part of the second information ciphered in said step a) after the first information including the deciphering information is sent out in said step b).

14. The computer readable information recording medium as claimed in claim 13, said program further comprising instructions for causing the computer to perform the step of:

d) interrupting ciphering performed in said step a), and

wherein, when ciphering is interrupted in said step d), the relevant predetermined time interval part of the second information is sent out in said step c) in a state of not being ciphered.

15. The computer readable information recording medium as claimed in claim 13, wherein:

in said step b), the deciphering information is dispersed temporally with respect to the first information when the deciphering information included in the first information is sent out.

16. The computer readable information recording medium as claimed in claim 13, wherein:

said second information comprises predetermined digital contents and said first information comprises predetermined advertisement contents.