Data transmitter, data transmitting method, data receiver, information processor, and information recording medium
US6047103A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 11, 1997 |
| Grant date | Apr 4, 2000 |
| Priority date | — |
| Expiry date | Aug 11, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N2005/91364
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A data transmitting device capable of performing copyright protection processing, when digital data retrieved from the information recording medium is AV data, which includes: an interface section for receiving information specifying the digital data to be output and the data receiving device and for outputting the digital data via the digital interface; a judgment section for judging whether or not the digital data includes video information; an authentication section for authenticating whether not the data receiving device is a proper data receiving device having a function of converting digital data into video data based on authentication data output from the data receiving device; a data retrieval section for retrieving the specified digital data from an external medium; and a control section for controlling the interface section to output the digital data via the digital interface only when the judgment section judges that the digital data includes video information and the authentication section authenticates that the data receiving device is the proper data receiving device. A data transmitting method, a data receiving device, an information processing apparatus, and an info…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.