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Brief introduction – RGBLink CP 3072 User Manual User Manual

Page 17

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1. Brief Introduction

Terms and Definitions

CP 3072 User Manual 17

image quality. This communication takes place over the DDC

Display Data Channel.


“Frame”: In interlaced video, a frame is one complete picture. A video

frame is made up of two fields, or two sets of interlaced lines. In a film,

a frame is one still picture of a series that makes up a motion picture.


“HDMI” - High – Definition Multimedia Interface: An interface used

primarily in consumer electronics for the transmission of

uncompressed high definition video, up to 8 channels of audio, and

control signals, over a single cable. HDMI is the de facto standard for

HDTV displays, Blu-ray Disc players, and other HDTV electronics.

Introduced in 2003, the HDMI specification has gone through several

revisions.


“HDSDI”: The high-definition version of SDI specified in SMPTE-292M.

This signal standard transmits audio and video with 10 bit depth and

4:2:2 color quantization over a single coaxial cable with a data rate of

1.485 Gbit/second. Multiple video resolutions exist including

progressive 1280x720 and interlaced 1920x1080 resolutions. Up to 32

audio signals are carried in the ancillary data.


“JPEG” (Joint photographic Expects Group): Commonly used

method of loss compression for photographic images using a discreet

cosine transfer function. The degree of compression can be adjusted,

allowing a selectable tradeoff between storage size and image quality.

JPEG typically achieves 10:1 compression with little perceptible loss

in image quality. Produces blocking artifacts.

“MPEG”: Motion Picture Expect Group. A standard committee under

the auspices of the International Standards Organization working on

algorithm standards that allows digital compression, storage and

transmission of moving image information such as motion video,

CD-quality audio, and control data at CD-ROM bandwidth. The MPEG

algorithm provides inter-frame compression of video images and can

have an effective compression rate of 100:1 to 200:1.


“NTSC”: The color video standard used in North America and some

other parts of the world created by the National Television Standards

Committee in the 1950s. A color signal must be compatible with

black-and-white TV sets. NTSC utilizes an interlaced video signals,

525 lines of resolution with a refresh rate of 60 fields per second (60

Hz). Each frame is comprised of two fields of 262.5 lines each, running

at an effective rate of 30 frames per second.