automatic contrast control
Also found in: Acronyms.
automatic contrast control[¦ȯd·ə¦mad·ik ′kän‚trast kən‚trōl]
A circuit that varies the gain of the radio-frequency and video intermediate-frequency amplifiers in such a way that the contrast of the television picture is maintained at a constant average level.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.