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HDcctv (High Definition Closed Circuit Television) is an open industrial standard for transmitting uncompressed high-definition analog (AHD) or digital video over point-to-point coaxial cable links for video surveillance applications. [1] [2] [3] HDcctv uses the SMPTE HD-SDI protocol and can transmit 720p or 1080p video over at least 100 m of ...
Rendition of SD ECR-1-1978 color bars Colors are only approximate due to different transfers and color spaces used on web pages and video (BT.601 or BT.709). SMPTE color bars are a television test pattern used where the NTSC video standard is utilized, including countries in North America.
Composite video is an baseband analog video format that typically carries a 405, 525 or 625 line interlaced black and white or color signal, on a single channel, unlike the higher-quality S-Video (two channels) and the even higher-quality YPbPr (three channels).
To provide sufficient bandwidth for the chrominance signal, yet interfere only with the highest-frequency (and thus least perceptible) portions of the luminance signal, a chrominance subcarrier near 3.6 MHz was desirable. 227.5 = 455/2 times the line rate was close to the right number, and 455's small factors (5 × 7 × 13) make a divider easy ...
The terms tissue Doppler imaging (TDI) and tissue velocity imaging (TVI) are usually synonymous with TDE because echocardiography is the main use of tissue Doppler. Like Doppler flow, tissue Doppler can be acquired both by spectral analysis ( spectral density estimation ) as pulsed Doppler [ 1 ] and by the autocorrelation technique as colour ...
[18] [19] The first fight with a closed-circuit telecast was Joe Louis vs. Joe Walcott in 1948. [ 20 ] Closed-circuit telecasts peaked in popularity with Muhammad Ali in the 1960s and 1970s, [ 18 ] [ 19 ] with " The Rumble in the Jungle " fight drawing 50 million CCTV viewers worldwide in 1974, [ 21 ] and the " Thrilla in Manila " drawing 100 ...
Up to 120 in (3.0 m) [42] Up to 150 in (3.8 m) [43] (152 in experimental) [44] Up to 97 in (2.5 m) [45] Maintenance Hazardous to repair or service due to high-voltage, requires skilled convergence calibration and adjustments for geographic location changes. [46] Glass display tube is evacuated and carries risk of implosion if improperly handled.
An LED-backlit LCD is a liquid-crystal display that uses LEDs for backlighting instead of traditional cold cathode fluorescent (CCFL) backlighting. [1] LED-backlit displays use the same TFT LCD (thin-film-transistor liquid-crystal display) technologies as CCFL-backlit LCDs, but offer a variety of advantages over them.
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