Television Signal

television signal

[′tel·ə‚vizh·ən ‚sig·nəl]
A general term for the aural and visual signals that are broadcast together to provide the sound and picture portions of a television program. Also known as television emission.

Television Signal


a video, or brightness, signal that incorporates horizontal and vertical blanking pulses for the return trace of the electron beam in a kinescope during scanning. The maximum amplitude of a television signal is limited by the reference white and blanking levels. A guard band is often provided between the blanking and black levels. The incorporation of horizontal and vertical synchronizing pulses in a television signal results in a composite black-and-white television signal. The synchronizing pulses are located in the region of the signal spectrum below the blanking level, and their amplitude is 30 percent of the maximum amplitude of the composite signal.

A composite color television signal comprises a brightness signal together with the blanking pulses and all the synchronizing pulses, including the color synchronizing pulses. The brightness signal is superimposed with a color subcarrier signal that, together with the brightness signal, carries information about the transmitted color.

All the parameters of a television signal are stipulated by a television standard.


References in periodicals archive ?
21 (ANI): The BBC has claimed that its Persian television signal was being jammed following the airing stories on the death of Iran's top dissident cleric, Grand Ayatollah Hossein Ali Montazeri.
By combining Conexant's expertise in analog and digital television signal demodulation and tuning with RAVISENT's digital audio and video decoding and transport stream management technology, the two companies say they will create complete HDTV product solutions that PC manufacturers and board vendors can market to consumers as a high- quality interactive platform for true HDTV.
The early experimentation with cable as a superior means of delivering the television signal in the early 1950s (as opposed to the antennas needed for the microwave system) positioned Canada to take the lead in developing cable industry.
Contract notice: Production system implementation, implementation and institutional distribution of television signal in the canary islands parliament.
It was a television signal," says John Middleditch of the Los Alamos (N.
Contract notice: For recruiting services retransmission of television signals by satellite satellite segment reserve television of the balearic islands, sa