Radio transmitting and receiving circuits of a video camera having a detached view finder
US5179446A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Oct 22, 1991 |
| Grant date | Jan 12, 1993 |
| Priority date | — |
| Expiry date | Oct 22, 2011 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N5/775
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Radio transmitting and receiving circuits are disclosed which operate wireless without interference and where the main body of a video camera is detached from the view finder. A timing controller applied to a radio transmitting circuit inserts an encoding signal into a video signal having a predetermined horizontal synchronizing signal interval. Meanwhile, a timing controller applied to a radio receiving circuit extracts the encoded video signal and supplies it to a decoder. The decoded signal is read in conjunction with a reference code signal in a code discriminator, and the received signal is displayed in the view finder only if the codes match.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.