back-porch interval

См. также в других словарях:

• Back porch — refers to the portion in each scan line of a video signal between the end (rising edge) of the horizontal sync pulse and the start of active video. It was originally allocated to allow the slow electronics in early televisions time to respond to… …   Wikipedia

• Front porch — In television broadcasting, the front porch is a brief (about 1.5 microsecond) period inserted between the end of each transmitted line of picture and the leading edge of the next line sync pulse. Its purpose was to allow voltage levels to… …   Wikipedia

• NTSC — This article is about the television system. For the Indonesian government agency, see National Transportation Safety Committee. Television encoding systems by nation; countries using the NTSC system are shown in green. NTSC, named for the… …   Wikipedia

• PAL — For other uses, see PAL (disambiguation). Television encoding systems by nation; countries using the PAL system are shown in blue. PAL, short for Phase Alternating Line, is an analogue television colour encoding system used in broadcast… …   Wikipedia

• How television works — Analog televisionUntil the advent of digital television and flat panel displays in the 1990s, all television was based on the transmission and reception of analog signals, displayed on a cathode ray tube. Although a number of different broadcast… …   Wikipedia

• Colorburst — Horizontal sync and color burst of PAL videosignal Colorburst is a analog video, composite video signal generated by a video signal generator used to keep the chrominance subcarrier synchronized in a color television signal. By synchronizing an… …   Wikipedia

• Output power of an analog TV transmitter — Output power of a TV transmitter is the electric power applied to antenna system. There are two definitions: nominal (or peak) and thermal. Contents 1 Power defined in terms of voltage 2 Nominal power of a TV transmitter 3 The thermal power …   Wikipedia

• Chrominance — (chroma or C for short) is the signal used in video systems to convey the color information of the picture, separately from the accompanying luma signal (or Y for short). Chrominance is usually represented as two color difference components: U =… …   Wikipedia

• Dipole antenna — A schematic of a half wave dipole antenna connected to an unbalanced coaxial cable. Better practice is to connect the balanced dipole to the unbalanced line with a balun. A dipole antenna is a radio antenna that can be made of a simple wire, with …   Wikipedia

• Color killer — The color killer is an electronic stage in color TV receiver sets which acts as a muting circuit to cut off the color amplifiers when the TV receives a monochrome signal.[1] Contents 1 Monochromatic transmission 2 Color transmission 3 …   Wikipedia

• Differential phase — is a kind of linearity distortion which affects the color hue in TV broadcasting. Contents 1 Composite color video signal 2 The colorburst 3 Differential phase distortion …   Wikipedia