Frequency generation for multiplexed analog component color television encoding and decoding
US4652903A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Sep 21, 1984 |
| Grant date | Mar 24, 1987 |
| Priority date | — |
| Expiry date | Sep 21, 2004 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N11/08
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
In a Multiplexed Analog Component (MAC) color television transmission system in which the MAC signal is to be converted at the receiver to a composite color television signal having a 227.5 f.sub.H color subcarrier, frequency-generation equipment required at the receiver is simplified by selecting the various frequencies in accordance with the following relationship, EQU (f.sub.0 /n)=(3f.sub.1 /2)=3f.sub.2 =f.sub.4 =227.5k f.sub.H, where: PA1 f.sub.0 is the master clock frequency, PA1 f.sub.1 is the luminance sampling frequency, PA1 f.sub.2 is the chrominance sampling frequency, PA1 f.sub.4 is the MAC sampling frequency, f.sub.H is the horizontal line frequency, and PA1 n and k are positive integers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.