Digital recording/reproducing system
US6681015B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 28, 1999 |
| Grant date | Jan 20, 2004 |
| Priority date | — |
| Expiry date | Apr 28, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N2005/91364
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A digital recording/reproducing system includes a set top box. The STB receives a digital television broadcast signal and transmits a scrambled data stream from a stream selector via an interface to a digital recording/reproducing apparatus. In the data recording/reproducing apparatus, a scramble key is acquired depending on a billing request for data recording. To AS-MO disc are recorded a contents key converted from a disc unique ID using a descramble key as well as the data stream. In accordance with a user's approval for the billing, an account table is created which is registered in an IC card and transmitted via a MODEM and telephone line.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.