Characteristics of Lccs Video Monitor System

CHARACTERISTICS OF LCCS VIDEO MONITOR SYSTEM

■PRINCIPLE BEHIND LCCS VIDEO MONITOR OPERATION

The LCCS Video Monitor is a combination of a black-and-white cathode-ray tube and liquid crystal color shutter (LCCS), which are used together to reproduce color images.

The video signal input to the monitor is demodulated into RGB primary color signals which are then stored in the field memory. Signals in the field memory are read three times faster than the input video signal is, and are displayed on the black-and-white cathode-ray tube in the order of R, G and B. (Three images are displayed during one field.)

Color filters on the liquid crystal color shutter change according to the displayed primary color signal, transforming the black-and-white images into R, G and B primary color images.

Because of the phenomenon known as persistence of vision, the R, G and B primary color images appear as a single color image to the human eye.

FEATURES OF LCCS VIDEO MONITOR

• High Contrast

Thanks to its low permeability, the liquid crystal color shutter (LCCS) does not reflect outside light as much, enabling it to reproduce high-contrast images even in direct sunlight.

• High Resolution

The use of a black-and-white cathode-ray tube (which has no picture elements) and a liquid crystal color shutter (LCCS) allows it to display images at high resolution.

• No Irregular Color Caused By Magnetic Interference

Unlike with color cathode-ray tubes, irregular color does not occur on the display because the monitor does not have any color elements.

• No Moire Patterns

Horizontal moire patterns (interference fringes) do not occur because the monitor does not have any color elements.

THE FOLLOWING ARE NOT MALFUNCTIONS:

Picture hue changes depending on the angle from which the monitor is viewed.

This is due to normal characteristics of the liquid crystal color shutter.

Two horizontal stripes are displayed on the picture.

This is due to the structure of the liquid crystal color shutter. Simple color image is displayed for an instant.

This is due to normal characteristics of the LCCS video monitor.

Patterns such as spots are displayed when the monitor is turned ON or OFF. This is due to normal characteristics of the liquid crystal color shutter.

The color of characters or images seem to be shifted.

This is due to normal characteristic of the LCCS video monitor.

When images combined with a Macrovision copy protection signal or jittery images from a VCR, etc. are displayed on the monitor, their color may appear to be shifted.