The Video Processing Amplifier in the Ampex Videotape Recorder

Due to stringent requirements of network television, especially with regard to the shape and transient noise content of synchronizing pulses, a special “processing amplifier” has been developed to insure acceptable video waveform at the output of the Videotape Recorder. Similar in concept to a stabilizing amplifier, the new device represents a logical extension of stabilizing techniques. In addition to the usual stabilizing amplifier functions, the processing amplifier provides for complete reblanking of the video waveform and precise gating of the sync pulses, insuring that noise transients in the black direction will not project beyond reference black level during the active portion of the horizontal cycle. These operations are controlled solely by timing information in the incoming sync pulses.

Print ISSN

0361-4573

Published

1958-11

Content type

Information

DOI

10.5594/J17901