System for distributing digital information
US5809145A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 28, 1996 |
| Grant date | Sep 15, 1998 |
| Priority date | — |
| Expiry date | Jun 28, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2211/007
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A system for distributing digital data among a plurality of customers is provided which comprises a modular software architecture to accommodate different data preview, search, data compression and encryption functions, and different purchase transactions. A software kernel creates an operating environment in conjunction with the host operating system of a customer computer to accommodate these different services and functions and allow for the storage and retrieval of datasets from a variety of storage locations, such as portable storage devices at customer computers and shared memory devices accessible via communication networks. Computer-dependent product codes for requesting datasets and release codes for decrypting datasets are generated to protect against unauthorized use of selected datasets.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.