†(a) (the frequency of) a picture signal; (b) the number of times per second that a complete television image is scanned or transmitted.

the component of the video signal which carries the information relating to the brightness of individual pixels.

the level of the picture signal that corresponds to black in the transmitted picture.

the number of scanning lines produced per second.

Television. The level of the video signal voltage during line blanking; (also) this part of the signal.

(a) the motion of a scanning beam or spot along a line; (b) the electrical signal which causes this; (c) an apparatus or technique which scans an…

the light level of the darkest element of a television picture.

the signal level corresponding to the maximum brightness on a television screen, computer monitor, etc.

Television. In a video signal: either of the two periods of line blanking immediately before and after the line-synchronizing pulse (in full front…

a sequence of electrical impulses used for testing purposes in television broadcasting.

a small periodic oscillation of the scanning spot in a cathode ray tube television, formerly used to render the scanning lines less noticeable.

Television. The component of a television signal which carries information on the brightness of the image. Also luminance signal. Cf. chrominance, n.