Video camera microphone with zoom variable acoustic focus
US4862278A · kind A · utility
32Cited by
3References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 14, 1986 |
| Grant date | Aug 29, 1989 |
| Priority date | — |
| Expiry date | Oct 14, 2006 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S358/906
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
In a video camera having a zoom lens and a microphone pickup for recording sound associated with the video images, the acoustic focus (or acoustic acceptance angle) of the microphone pickup is varied between uni-directional and omni-directional in synchronism with the zoom lens control of the camera in order to correlate the optical field of view of the lens with the acoustic field of view of the microphone for optimum coordination of picture and sound.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.