CVT timings include the necessary pauses in picture data (known as "blanking intervals") to allow CRT displays to reposition their electron beam at the end of each horizontal scan line, as well as the vertical repositioning necessary at the end of each frame. CVT also specifies a mode ("CVT-R") which significantly reduces these blanking intervals (to a period insufficient for CRT displays to work correctly) in the interests of saving video signal bandwidth when modern displays such as LCD monitors are being used, since such displays typically do not require these pauses in the picture data.
In revision 1.2, released in 2013, a new "Reduced Blanking Timing Version 2" mode was added which further reduces the horizontal blanking interval from 160 to 80 pixels, increases pixel clock precision from ±0.25 MHz to ±0.001 MHz, and adds the option for a 1000/1001 modifier for ATSC/NTSC video-optimized timing modes (e.g. 59.94 Hz instead of 60.00 Hz or 23.976 Hz instead of 24.000).[2]CEA-861-H will introduce RBv3.[3]
Bandwidth
Example data rates required by various display resolutions using common timing methods
Values are calculated for 8bpc RGB or Y′CBCR 4∶4∶4 color mode. For different color depths, multiply results by 1.25 (for 10bpc), 1.5 (for 12bpc), or 2 (for 16bpc). For chroma subsampled formats, divide results by 1.5 for Y′CBCR 4∶2∶2, or by 2 for Y′CBCR 4∶2∶0.
coordinated, video, timings, vesa, 2013, standard, vesa, which, defines, timings, component, video, signal, initially, intended, computer, monitors, video, cards, standard, made, into, consumer, televisions, parameters, defined, standard, include, horizontal, . Coordinated Video Timings CVT VESA 2013 3 v1 2 1 is a standard by VESA which defines the timings of the component video signal Initially intended for use by computer monitors and video cards the standard made its way into consumer televisions The parameters defined by standard include horizontal blanking and vertical blanking intervals horizontal frequency and vertical frequency collectively pixel clock rate or video signal bandwidth and horizontal vertical sync polarity The standard was adopted in 2002 and superseded the Generalized Timing Formula Contents 1 Reduced blanking 2 Bandwidth 3 See also 4 References 5 External linksReduced blanking EditCVT timings include the necessary pauses in picture data known as blanking intervals to allow CRT displays to reposition their electron beam at the end of each horizontal scan line as well as the vertical repositioning necessary at the end of each frame CVT also specifies a mode CVT R which significantly reduces these blanking intervals to a period insufficient for CRT displays to work correctly in the interests of saving video signal bandwidth when modern displays such as LCD monitors are being used since such displays typically do not require these pauses in the picture data In revision 1 2 released in 2013 a new Reduced Blanking Timing Version 2 mode was added which further reduces the horizontal blanking interval from 160 to 80 pixels increases pixel clock precision from 0 25 MHz to 0 001 MHz and adds the option for a 1000 1001 modifier for ATSC NTSC video optimized timing modes e g 59 94 Hz instead of 60 00 Hz or 23 976 Hz instead of 24 000 2 CEA 861 H will introduce RBv3 3 Bandwidth EditExample data rates required by various display resolutions using common timing methods Video Format Data Rate Gbit s CVT CVT RB CVT RB v2 CTA 8611280 720 60 Hz 1 79 1 54 1 45 1 781920 1080 60 Hz 4 15 3 33 3 20 3 562560 1440 60 Hz 7 49 5 80 5 63 3840 2160 30 Hz 8 13 6 31 6 18 7 133840 2160 60 Hz 17 10 12 80 12 54 14 265120 2880 60 Hz 30 64 22 52 22 18 7680 4320 30 Hz 33 62 24 72 24 48 28 517680 4320 60 Hz 69 42 50 15 49 65 57 02Values are calculated for 8 bpc RGB or Y CBCR 4 4 4 color mode For different color depths multiply results by 1 25 for 10 bpc 1 5 for 12 bpc or 2 for 16 bpc For chroma subsampled formats divide results by 1 5 for Y CBCR 4 2 2 or by 2 for Y CBCR 4 2 0 See also EditExtended display identification dataReferences Edit Standards Listing VESA Archived from the original on 2012 06 27 Retrieved 2014 09 01 VESA Free Standards VESA Archived from the original on 2017 08 21 Retrieved 2017 08 20 edid decode git edid decode main repository git linuxtv org Retrieved 2021 01 16 External links EditVESA free standards includes free CVT 1 2 timings spreadsheet This computing article is a stub You can help Wikipedia by expanding it vte Retrieved from https en wikipedia org w index php title Coordinated Video Timings amp oldid 1132351094, wikipedia, wiki, book, books, library,
