Deferred billing, broadcast, electronic document distribution system and method
US5727065A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 5, 1997 |
| Grant date | Mar 10, 1998 |
| Priority date | — |
| Expiry date | Jun 5, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2221/2135
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An electronic document delivery system and method in which a broadcast center periodically sends a "catalog" of available documents to a receiving computer, thereby allowing a user to browse through the available documents without having to access the broadcast center. The documents are transmitted as packets, and the packets are decrypted as soon as they are received, eliminating the need to store both an encrypted and an decrypted version of the documents at the receiving computer. The receiving computer periodically receives information allowing it to decrypt received documents and to encrypt billing information for the receiving computer. The invention is not limited to text-only documents and can receive all types of documents, such as software, images, text, and full-motion video.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.