Chutchavong, Vanvisa

Loading...
Thumbnail Image
Preferred name
Chutchavong, Vanvisa
Alternative Name
Chutchavong, V.
Main Affiliation
Email
vanvisa.ch@kmitl.ac.th

Settings

Now showing 1 - 2 of 2
  • Loading...
    Thumbnail Image
    Some of the metrics are blocked by your 
    consent settings
    Item type:Publication,
    Equalization of the distorted chrominance signal using IIR digital filter with the bernstein filter
    (2005-01-01)
    Chutchavong, V.
    ;
    Janchitrapongvej, K.
    ;
    Pirajnanchai, V.
    In this paper, we present the use of the Bernstein Polynomials to obtain an IIR digital filter transfer function, which can be applied to video equalizer for compensating the amplitude of chrominance signal in color television. In addition, experimental results are carried out by using the modulated 20T sine squared signal on the color sub carrier 4.43 MHz. It is shown here that the proposed equalizer can either enhance or compress the chrominance signal in color television transmission.
  • Loading...
    Thumbnail Image
    Some of the metrics are blocked by your 
    consent settings
    Item type:Publication,
    An IIR digital video equalizer design with the bernstein polynomial and generalized bilinear transformation for gain chrominance distortion
    (2008-12-01)
    Chutchavong, V.
    ;
    Sangaroon, O.
    ;
    Pirajnanchai, V.
    ;
    Janchitrapongvej, K.
    Video equalizer design for compensated the distortion of the chrominance amplitude in color television transmission system is presented. The approximation is based on the Bernstein Polynomials and generalized bilinear transformation to obtain the transfer function. This approach has several parameters can be varied satisfying stability conditions. And the advantages of the Bernstein Polynomials when compared to the Butterworth, Chebyshev and Thomson Polynomials are three parameters available control the amount of phase and magnitude, linear phase, and flexible for variable of phase. Among all referred advantages so that these methodologies were applied in this paper. In addition, the pulse and bar test signal which has been used to measure linear waveform distortion in TV system is special the modulated 20T sine squared pulse with color sub-carrier 4.43 MHz for PAL system. As a result, the proposed digital video equalizer can be enhance and compress the gain chrominance distortion without degraded it phase characteristic.