로그인시 본인확인과정이 필요할 수 있습니다.
다음과 같은 기능을 한번의 로그인으로 사용 할 수 있습니다.
NTIS 바로가기
다음과 같은 기능을 한번의 로그인으로 사용 할 수 있습니다.
DataON 바로가기
다음과 같은 기능을 한번의 로그인으로 사용 할 수 있습니다.
Edison 바로가기
다음과 같은 기능을 한번의 로그인으로 사용 할 수 있습니다.
Kafe 바로가기
| 국가/구분 | United States(US) Patent 등록 |
|---|---|
| 국제특허분류(IPC7판) |
|
| 출원번호 | US-0874991 (1992-04-24) |
| 발명자 / 주소 |
|
| 인용정보 | 피인용 횟수 : 893 인용 특허 : 0 |
An information distribution system provides information to a user, when the information corresponds to criteria individually selected by the user, and then charges the user only for the selected information thus provided. Encrypted information packages (IP\s) are provided at the user site, via high
An information distribution system provides information to a user, when the information corresponds to criteria individually selected by the user, and then charges the user only for the selected information thus provided. Encrypted information packages (IP\s) are provided at the user site, via high and/or low density storage media and/or by broadcast transmission. The IP\s selected by the user are decrypted and then printed or displayed for viewing by the user. The charges for the IP\s thus displayed are accumulated within the user apparatus and periodically reported by telephone to the system\s central accounting facility which issues encryption keys. The encryption keys, used to decrypt the IP\s, are changed periodically. If the central accounting facility has not issued a new encryption key for a particular user station, the station is unable to retrieve information from the system when the key is changed.
In a system for distributing information to a subscriber location, said system including a broadcasting station and a central billing station, said broadcasting station including transmitting a serial data stream including a plurality of information blocks, each information block including an encryp
In a system for distributing information to a subscriber location, said system including a broadcasting station and a central billing station, said broadcasting station including transmitting a serial data stream including a plurality of information blocks, each information block including an encrypted information portion and a charge code portion, a method comprising: receiving said serial data stream; storing a search key word selected by said subscriber, said search key word representing a desired word pattern contained in information blocks of interest to said subscriber; searching said received serial data stream at said subscriber location using said stored search key word to select an information block by finding a match between said search key word and said information block; decrypting said encrypted information portion of said received information block; storing said information portion of said received information block; storing said charge code portion of said received information block; retrieving said stored information portion of said received information block by said subscriber; and reporting said stored said charge code portion to said central billing station; whereby said subscriber is billed for said received information block.
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