Low band converter for use in a video tape recorder
US5142378A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 23, 1989 |
| Grant date | Aug 25, 1992 |
| Priority date | — |
| Expiry date | Jun 23, 2009 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N9/8707
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A low band converter for recording color signals converted in low band onto a video tape media of a VTR system. The inventive converter for use in a video tape recorder is capable of converting color signals thereof in low band, so that phase and frequency of the color signals may be correctly coincident with those of a horizontal synchronization signal in the VTR, by first demodulating and next modulating by way of synthesizing the color-differential signals from the color signals. An apparatus for achieving the converter includes a burst gate generator BGPG, a pulse synthesizer, a first delay circuit, a second delay circuit, a burst amplifier, a color signal demodulator, a first modulator, a second modulator, a mixer, a first detector and a second detector, a color gain converter ACC, a video recording amplifier, a color killer suited, and a low pass filter 100.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.