TW2802 datasheet(11/81 Pages) RENESAS

Part #	TW2802

Description	Multiple Video Decoder for Security Applications

PDF	81 Pages

Scroll/Zoom	100%

Manufacturer	RENESAS [Renesas Technology Corp]

Direct Link	http://www.renesas.com

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11 / 81 page

TW2802, TW2804

FN7732 Rev.1.00

Page 11 of 81

May 19, 2017

Y/C Separation

The adaptive comb filter is used for high quality luminance/chrominance separation from NTSC/PAL

composite video signals. The comb filter improves the luminance resolution and reduces noise such as

cross-luminance and cross-color. The adaptive algorithm eliminates most of errors without introducing new

artifacts or noise. To accommodate some viewing preferences, additional chrominance trap filters are also

available in the luminance path. Fig. 2 and Fig 3 show the frequency response of notch filter for each system

NTSC and PAL.

Fig. 2 The Characteristics of Luminance Notch Filter for NTSC

Fig 3 The Characteristics of Luminance Notch Filter for PAL

x 10

-60

-50

-40

-30

-20

-10

Frequency (Hertz)

x 10

-60

-50

-40

-30

-20

-10

Frequency (Hertz)

TW2802 Datasheet(PDF) 11 Page - Renesas Technology Corp