R&D Report 1968-38 : Control of the picture display in colour film recording equipment
E.W. Taylor, G.D. Judd

A technique for adjustment of the picture-display parameters in a colour film telerecording equipment is described. A photometric method of determining the correct cathode-ray tube adjustments for low picture-brightness values is used, in conjunction with a white-level clamping circuit, which enables these adjustments to be made without affecting the displayed peak brightness.

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