Image is in color. Range of colors is generated with varying combinations of different discrete colors. One common technique is sensing the red, green, and blue components (RGB) and combining them to create a wide spectrum of colors.
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The maximum number of individual picture elements that can be distinguished in a single scanning line. It is most common to characterize horizontal video resolution corrected for the image aspect ratio, or specify the resolution in the largest circle than can fit in a rectangular image. Thus, for example a 640 x 480 image would be specified as 480 horizontal lines.
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The National Television System Committee 525-line color-television standard used in North America and Japan. Approximately 480 lines hold image information and the remaining lines contain synchronization, time delay, and other encoded information such as closed caption text. The standard frame rate is 30 frames per second.
Phase Alternate Line, the European 625-line, 25-frame per second color-television standard. A modification of NTSC system used with the CCIR video norm. The phase of the color carrier is 180° shifted every image line, making the PAL system not as sensitive to color signal phase distortion. It provides somewhat lower vertical resolution the NTSC system and requires complex processing equipment.
SEquential Color And Memory, translated from the French SEquential Couleur Aver Memoire. SECAM is a composite color transmission system in which two color difference signals are transmitted on two separate lines. Memory is required to obtain both color difference signals for color decoding. This system is used in France and many East European, African and Asian countries.
RS-170 is the standard black and white video format used in the United States (525 lines, 30 frames per second). It was originally defined by the EIA (Electronic Industry Association) standards organization for use in North America, Japan, and a few other parts of the world. The EIA standard defines only the monochrome picture component but is mainly used with NTSC or PAL color encoding standards.
A standard recommended by EIA for signals generated by closed-circuit TV cameras scanned at 525 lines, 60 frames per second and interlaced 2:1. The standard is similar to RS-170, but H-sync pulses are absent during V-sync. Equalizing pulses are not required and may be added optionally during the V-blanking interval.
This standard is also used for color television station electrical signals.
CCIR (Comité Consultatif International des Radio Communications, or International Radio Consultative Committee) is an international committee that sets and governs video signal standards. Merged with the ITU and became the ITU-R radio communications division.
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A type of component video output in which red, green, and blue image components are transmitted as separate signals over three separate wires, allowing for full bandwidth for each component. Different synchronization methods are available for RGB.
S-Video or Y/C output contains two separate signals, luminance (Y) and color (C) transmitted on two separate cables. The C color component is modulated on the same 3.58 MHz subcarrier as it would be for NTSC output, but the bandwidth is not limited as it must be for Composite Output.
Composite output format contains the red, green and blue components of the color (C) encoded or compressed, then superimposed on the luminance (Y) on a single signal. The RGB signals are decoded and reconstructed for image display, but the bandwidth limiting of the signal compression limits the subsequent color faithfulness.
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Recording mode can be triggered by a captured event, predetermined light level variation, or other user-specified conditions. May also include visual or audible alarm signals.
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Philips Black And White Monitors, Size: 12 , Horizontal Resolution: 700 Lines, Video Input: .5 To 2 V P-P, 75 Ohm, Power Requirements: 120 Vac, 60 Hz, 45 W