System for combining analog and image signals into a standard video format
US4045815A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 4, 1976 |
| Grant date | Aug 30, 1977 |
| Priority date | — |
| Expiry date | Feb 4, 1996 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N5/278
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A system for combining at least one analog signal, such as EKG signal, and an image signal, such as video signal representing a fluoroscopic view of a patient's heart or the like. The system includes a summing amplifier, which provides an input to a TV monitor and/or video recorder. The first input to the summing amplifier is provided from a TV camera arranged to view a physiological activity. A second input to the summing amplifier is provided from an encoder which receives one analog signal representing physiological data. The encoder includes an analog-to-digital (A/D) converter which receives the analog signal and feeds it to a random access memory (RAM). The A/D converter and the RAM are controlled by sync signals derived from a master camera control unit, which also provides sync signals to the TV camera.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.