Loading...
A variable luminance-chrominance gain equalizer
Author(s)
Date Issued
July 30, 2010
Type
Conference Paper
Abstract
This paper presents a variable luminance-chrominance gain equalizer for correcting the linear chrominance gain distortion in color TV transmission system. The new technique shows that the chrominance signal amplitude at 4.43 MHz can be controlled by using a delay line network in parallel with a variable resistor RT. Therefore, the proposed gain equalizer can be controlled by means of variable resistor RT and RY for correction of the chrominance gain distortion. It is also proved to be efficient in equalizing because it offers more advantages. Among the advantages obtained using a delay line network in parallel with a variable resistor when compared to the gain equalizer provide by the other filters. First of all, it can provide a wide range of gain control. Secondly, the circuit of the proposed gain equalizer is simple with low cost. Next, it is also low complexity. At last, the chrominance gain distortion can be easily corrected without much serious delay error. Additionally, a modulated 20T sine-squared pulse test signal is used to test the performance of the proposed gain equalizer.
Citation
Ecti Con 2010 the 2010 Ecti International Conference on Electrical Engineering Electronics Computer Telecommunications and Information Technology, 899-903, 2010