Audio activated video display
US4081829A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 23, 1976 |
| Grant date | Mar 28, 1978 |
| Priority date | — |
| Expiry date | Aug 23, 1996 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04S7/40
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An interface unit for providing visual color display of objects on an unaltered TV receiver which are directly associated with the music on an audio source. Audio energy is derived from separate channels of a stereo system. This audio information is presented on the screen in the form of objects in various arrangements. Color is derived based on the zero crossing rate of each channel. Each channel has its own color associated with it. Objects may be solid, or rings, or one may be "subtracted" one from the other. If desired, the different arrays may be selected automatically in a random manner. A spectral color modulator using phase shifted techniques is incorporated.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.