Page 68 - Concise Encyclopedia of Robotics

Composite Video Signal
manipulators and end effectors keeps the stress on its components to a
minimum. One means of accomplishing this is a back pressure sensor.
See also BACK PRESSURE SENSOR.
COMPOSITE VIDEO SIGNAL
A composite video signal is the waveform that modulates a television (TV)
or video carrier. The composite signal contains video intelligence as well as
synchronization, blanking, and timing pulses. The bandwidth is typically
6 MHz (6 megahertz) for conventional fast-scan signals, and approxi-
mately 3 kHz (3 kilohertz) for slow-scan signals. A video camera, such as
an image orthicon or vidicon, produces a fast-scan signal. Some robotic
vision systems generate and analyze composite video signals.
The illustration shows the waveform for a single line of a color picture
signal. There are normally 525 or 625 lines in a complete frame for standard
Blanking pulses
Amplitude

Image data

Black

White
Time
63.5 microseconds

Composite video signal

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