Title:
AUTOMATIC POSITIONING CONTROLLER FOR COLOR TELEVISION CAMERA
Document Type and Number:
Japanese Patent JPS59146285
Kind Code:
A
Abstract:
A system or automatically setting up a color television camera. Register error is detected by correlating the times of occurrence of level transitions in two video signals. A unipolar pulse is provided in response to a level transition in one of the video signals, and a pulse having a positive and a negative lobe is provided in response to a level transition in the other of the video signals. The two pulse signals are multipled. The product of the two pulse signals is integrated to produce a signal whose amplitude and polarity varies with register error. A microprocessor control system detects size and centering errors by measuring register error at different spots on the raster. Before correcting setup errors, the microprocessor verifies that there are adequate level transitions in the imaged scene by methodically adjusting the setup controls over a range of values and noting whether the measured register or size errors change accordingly.
Inventors:
CHIYAARUZU EMU HOWAITO
UIRIAMU JIEI KOSUGUROOBU
UIRIAMU JIEI KOSUGUROOBU
Application Number:
JP1693084A
Publication Date:
August 22, 1984
Filing Date:
February 01, 1984
Export Citation:
Assignee:
HARRIS CORP
International Classes:
H04N9/09; H04N9/093; (IPC1-7): H04N9/09
Attorney, Agent or Firm:
Kyozo Yuasa