Additional information
■Glossary
The following is a list of key words and their explanations used in the use of projectors and image signals. Please refer to it when using the
DLP™ technology
This stands for Digital Light Processing. DLP uses the DMDTM chip, developed by Texas Instruments.
DCDi™ function
This is an abbreviation of Directional Correlational Deinterlacing, a high quality image circuitry developed by the Faroudja company. It uses edge cutting techniques to remove jagged edges from images during Interlace → Progressive conversion, allowing smooth, natural image reproduction.
Component video signal
Component video signal is sent with independent luminance and color signals. It gives a higher image quality than ordinary composite video signal because it bypasses mixing and separating circuits. Component video signal consists of three lines, the luminance signal (Y) and two color difference signals (PB/CB, PR/CR).
S video signal
S stands for Separate. This signal is sent with separated luminance (Y) and color (C) signals. Use a
Composite video signal
This is the most common type of video signal. The luminance signal and color signal are sent combined in one line. Mixing and separating processes are necessary on both the send and receive sides. A pin cable is used for connection.
RGB signal
An RGB signal transmits color information by using a numeric representation of the primary colors of red, green and blue separately. When the signal is received, it can be expressed in various colors by adding and mixing colors. This type of signal is widely used for sending and receiving color images between computers. Horizontal and vertical sync signals are also necessary.
HDTV
This is an abbreviation of
•A vertical resolution of 720p, or 1080i (p stands for progressive scans, i stands for interlace scans).
•An image aspect ratio of 16:9
SDTV
An abbreviation of Standard Definition Television, used to define normal television broadcasts which do not meet the standards of HDTV.
D connector
This connector is designed for the Japanese D format only. It is used for sending and receiving the image signal between the latest type of A/V components. This connector can receive the component signal by using a D connector cable. There are five levels
DVI connector
A digital RGB/Component signal is sent differentially from a computer or A/V equipment to this connector. A
Standby
The state in which the circuit to receive
Test pattern
Test patterns are stored in this unit for use in adjusting the position and focus of the projected image on the screen.
Interlace
The most common type of scanning in use in televisions. It divides an image into two fields for scanning, and uses even and odd numbered lines of those fields to build an image (frame).
Progressive
This displays all the scanning lines of the entire frame at one time. It greatly reduces the flicker that is more noticeable on a larger screen to create a sharp and smooth image. This unit projects using progressive scanning.
3-2 Pulldown detection style IP conversion
A function for directly converting interlace signal into sixty frame progressive signal used when receiving 60 field interlace signal from an image source recorded with the same 24 frames as movie film. This allows DVD and other materiel recorded with 24 frames to be projected on large screens as a natural, precise image with no loss of quality, comparable to a movie film.
SYNC
Computers output signals with a given regular frequency, which the projector must be synchronized to in order to produce a good quality image. Failure to match the phase of the signal will result in flickering, fading, and distortion of the image.
TRACKING
Computers output signals with a given regular frequency, which the projector must be synchronized to in order to produce a good quality image. Failure to match signal frequencies will result in vertical striping in the image.
INFORMATION | ADDITIONAL |
•DLP™ and DMD™ are trademarks of Texas Instruments.
•
is a trademark of Faroudja, a division of Genesis Microchip Inc.
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