Information storage and information transmission media with parental control
US6009433A · kind A · utility
79Cited by
69References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 24, 1998 |
| Grant date | Dec 28, 1999 |
| Priority date | — |
| Expiry date | Mar 24, 2018 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S707/99939
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Parental information of a video program recorded on an optical disk is always checked in a disk player. Even if a jump of laser beam tracing of an optical head erroneously occurs due to shocks or vibrations, the content of parental information assigned to the destination of optical head jumping is checked, to thereby achieve an accurate parental control of selective restriction for the video whose reproduction or presentation is restricted by the parental information.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.