Information processing apparatus, information processing method, and transmission medium
US6519701B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 14, 1998 |
| Grant date | Feb 11, 2003 |
| Priority date | — |
| Expiry date | Oct 14, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2221/2103
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
An Open Descriptor demanding an access right is transmitted from a personal computer to a DVD player. In response to this demand, the DVD player transmits either an Accept response or a Reject response. Upon receiving the Accept response, the personal computer transmits a Write Descriptor. The Write Descriptor indicates an instruction that data (da) having a data length (le) is written (AuthDe) into an address (Add) of a sender (SD). Upon receiving this Write Descriptor, the DVD player transmits the Accept Write Descriptor indicating that the writing instruction has been accepted. Thus, in an authentication protocol, data is transmitted in accordance with the size of the buffer for use in an electronic machine.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.