Recording medium playing apparatus
US5151793A · kind A · utility
22Cited by
4References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 30, 1990 |
| Grant date | Sep 29, 1992 |
| Priority date | — |
| Expiry date | Aug 30, 2010 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N9/75
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Karaoke is provided more easily and flexibly by recording video signals from multiple video sources on a disk; selecting one of those sources as desired; and reproducing the signals from that source along with either the output of a video camera or graphics data. The graphics data is recorded on the disk with the video source signals in multiplexed fashion, along with selection signals. When the multiplexed signals are demultiplexed, chroma-key composite circuitry effects desired superimposition of a video camera output on the source video signals.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.