PRELIM EXAM – Reviewer
December 2012
For
ECT04A1
( prepared by Sir Felixberto M. Gonzaga Jr.)
* It blanks out retrace for each H line by making video signal go to the black blanking level at 15,750 Hz. * horizontal blanking pulses
* It includes the camera signal with the picture information, sync pulses and blanking pulses. * composite video signal
* It times the scanning for each H line at 15,750 Hz. * horizontal sync pulses
* It blanks out the scanning during vertical retrace at 60 Hz. * vertical blanking pulses
* In the video signal, it indicates the brightness of the background for signal variations. * the DC component
* It is a number that indicates how contrast is expanded or compressed. * Gamma
* This refers to the ability of monochrome receiver to use Y signal for picture in black and white. It is also allows color receiver to reproduce monochrome. * Compatibility
* This is a combination of the C signal and Y luminance signal. * multiplexer
* The brightest for either color or monochrome information is also known as – * luminance
* Luminance or brightness without color is considered as – * monochrome
* The process of combining two signals on one carrier. * multiplexing
* The intensity of color is called – * saturation
* The carrier that modulates another carrier wave of higher frequency is known as – * subcarrier
* This is detector circuit for a specific phase of the modulated signal, necessary with a suppressed-carrier signal. * synchronous demodulator
* This is the transmission of the modulation sidebands without the carrier itself. * suppressed subcarrier
* The complimentary color for red is. * cyan
* The complimentary color for blue is. * yellow
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