Matches in DBpedia 2015-10 for { <http://dbpedia.org/resource/Vertical_blanking_interval> ?p ?o }
Showing triples 1 to 78 of
78
with 100 triples per page.
- Vertical_blanking_interval abstract "In a raster graphics display, the vertical blanking interval (VBI), also known as the vertical interval or VBLANK, is the time between the end of the final line of a frame or field and the beginning of the first line of the next frame. It is present in analog television, VGA, DVI and other signals. During the VBI the incoming data stream is not displayed on the screen. In raster cathode ray tube displays, the beam is blanked to avoid displaying the retrace line; see raster scan for details. The signal source, such as a television broadcast, does not supply image information during the blanking period.The VBI was originally needed because of the inductive inertia of the magnetic coils which deflect the electron beam vertically in a CRT; the magnetic field, and hence the position being drawn, cannot change instantly. Additionally, the speed of older circuits was limited. For horizontal deflection, there is also a pause between successive lines, to allow the beam to return from right to left, called the horizontal retrace or horizontal blanking interval. Modern CRT circuitry does not require such a long blanking interval, and thin panel displays require none, but the standards were established when the delay was needed (and to allow the continued use of older equipment). Blanking of a CRT may not be perfect due to equipment faults or brightness set very high; in this case a white retrace line shows on the screen, from bottom right to top left.In analog television systems the vertical blanking interval can be used for datacasting (to carry digital data), since nothing sent during the VBI is displayed on the screen; various test signals, time codes, closed captioning, teletext, CGMS-A copy-protection indicators, and various data encoded by the XDS protocol (e.g., the content ratings for V-chip use) and other digital data can be sent during this time period. In U.S. analog broadcast television, line 19 was reserved for a ghost-cancelling signal; line 21 was reserved for captioning data. The obsolete Teletext service contemplated the use of line 22 for data transmission.The pause between sending video data is used in real time computer graphics to perform various operations on the back buffer before copying it to the front buffer instead of just switching both pointers, or to provide a time reference for when switching such pointers is safe.In video game systems the vertical blanking pulses are extensively used to time the plotting of new graphics/removal of old ones in order to avoid screen tearing, as they occur at an accurately known frequency, and many systems up to the 16-bit era featured games and other graphical programs where drawing was conducted during the blanking interval for this reason. Cases where synchronising game code this way was more necessary than preferable made early video game systems such as the Atari 2600 difficult to program.Special raster techniques on the Atari 2600, Nintendo Entertainment System, and other consoles allowed extending this interval at the cost of some blank scanlines at the top or bottom of the screen, which may or may not end up in the overscan area. The use of double buffering in modern graphics hardware has rendered these techniques obsolete.Most consumer VCRs use the known black level of the vertical blanking pulse to set their recording levels. The Macrovision copy protection scheme inserts pulses in the VBI, where the recorder expects a constant level, to disrupt recording to videotapes.".
- Vertical_blanking_interval wikiPageID "329829".
- Vertical_blanking_interval wikiPageLength "4316".
- Vertical_blanking_interval wikiPageOutDegree "35".
- Vertical_blanking_interval wikiPageRevisionID "637210301".
- Vertical_blanking_interval wikiPageWikiLink Atari_2600.
- Vertical_blanking_interval wikiPageWikiLink Blanking_(video).
- Vertical_blanking_interval wikiPageWikiLink Broadcasting.
- Vertical_blanking_interval wikiPageWikiLink CGMS-A.
- Vertical_blanking_interval wikiPageWikiLink Category:Television_technology.
- Vertical_blanking_interval wikiPageWikiLink Cathode_ray_tube.
- Vertical_blanking_interval wikiPageWikiLink Closed_captioning.
- Vertical_blanking_interval wikiPageWikiLink Content_rating.
- Vertical_blanking_interval wikiPageWikiLink Copy_protection.
- Vertical_blanking_interval wikiPageWikiLink Datacasting.
- Vertical_blanking_interval wikiPageWikiLink Digital_Visual_Interface.
- Vertical_blanking_interval wikiPageWikiLink Double_buffering.
- Vertical_blanking_interval wikiPageWikiLink Extended_Data_Services.
- Vertical_blanking_interval wikiPageWikiLink Flat_panel_display.
- Vertical_blanking_interval wikiPageWikiLink Frame_buffer.
- Vertical_blanking_interval wikiPageWikiLink Framebuffer.
- Vertical_blanking_interval wikiPageWikiLink History_of_video_game_consoles_(fourth_generation).
- Vertical_blanking_interval wikiPageWikiLink Horizontal_blank.
- Vertical_blanking_interval wikiPageWikiLink Horizontal_blanking_interval.
- Vertical_blanking_interval wikiPageWikiLink Multiple_buffering.
- Vertical_blanking_interval wikiPageWikiLink Nintendo_Entertainment_System.
- Vertical_blanking_interval wikiPageWikiLink Nominal_analogue_blanking.
- Vertical_blanking_interval wikiPageWikiLink Overscan.
- Vertical_blanking_interval wikiPageWikiLink Pointer_(computer_programming).
- Vertical_blanking_interval wikiPageWikiLink Raster_graphics.
- Vertical_blanking_interval wikiPageWikiLink Raster_scan.
- Vertical_blanking_interval wikiPageWikiLink Rovi.
- Vertical_blanking_interval wikiPageWikiLink Rovi_Corporation.
- Vertical_blanking_interval wikiPageWikiLink Screen_tearing.
- Vertical_blanking_interval wikiPageWikiLink Teletext.
- Vertical_blanking_interval wikiPageWikiLink Television_broadcast.
- Vertical_blanking_interval wikiPageWikiLink Thin_panel_display.
- Vertical_blanking_interval wikiPageWikiLink V-chip.
- Vertical_blanking_interval wikiPageWikiLink VCR.
- Vertical_blanking_interval wikiPageWikiLink Vertical_interval_timecode.
- Vertical_blanking_interval wikiPageWikiLink Video_Graphics_Array.
- Vertical_blanking_interval wikiPageWikiLink Videocassette_recorder.
- Vertical_blanking_interval wikiPageWikiLinkText "49 additional lines without image content".
- Vertical_blanking_interval wikiPageWikiLinkText "V-blank".
- Vertical_blanking_interval wikiPageWikiLinkText "VBI".
- Vertical_blanking_interval wikiPageWikiLinkText "VBLANK".
- Vertical_blanking_interval wikiPageWikiLinkText "Vertical blanking interval".
- Vertical_blanking_interval wikiPageWikiLinkText "scan lines".
- Vertical_blanking_interval wikiPageWikiLinkText "vertical blank time".
- Vertical_blanking_interval wikiPageWikiLinkText "vertical blanking interval".
- Vertical_blanking_interval wikiPageWikiLinkText "vertical blanking pulse".
- Vertical_blanking_interval wikiPageWikiLinkText "vertical blanking".
- Vertical_blanking_interval wikiPageWikiLinkText "vertical".
- Vertical_blanking_interval hasPhotoCollection Vertical_blanking_interval.
- Vertical_blanking_interval wikiPageUsesTemplate Template:Analogue_TV_transmitter_topics.
- Vertical_blanking_interval wikiPageUsesTemplate Template:For.
- Vertical_blanking_interval wikiPageUsesTemplate Template:Unreferenced.
- Vertical_blanking_interval wikiPageUsesTemplate Template:Video_formats.
- Vertical_blanking_interval subject Category:Television_technology.
- Vertical_blanking_interval hypernym Time.
- Vertical_blanking_interval type Article.
- Vertical_blanking_interval type Person.
- Vertical_blanking_interval type Article.
- Vertical_blanking_interval comment "In a raster graphics display, the vertical blanking interval (VBI), also known as the vertical interval or VBLANK, is the time between the end of the final line of a frame or field and the beginning of the first line of the next frame. It is present in analog television, VGA, DVI and other signals. During the VBI the incoming data stream is not displayed on the screen. In raster cathode ray tube displays, the beam is blanked to avoid displaying the retrace line; see raster scan for details.".
- Vertical_blanking_interval label "Vertical blanking interval".
- Vertical_blanking_interval sameAs Interval_desborrat_vertical.
- Vertical_blanking_interval sameAs Austastlücke.
- Vertical_blanking_interval sameAs Intervalle_de_rafraîchissement_vertical.
- Vertical_blanking_interval sameAs 垂直帰線区間.
- Vertical_blanking_interval sameAs 수직_귀선_기간.
- Vertical_blanking_interval sameAs m.01ws5k.
- Vertical_blanking_interval sameAs Кадровый_гасящий_импульс.
- Vertical_blanking_interval sameAs Vertical_blanking_interval.
- Vertical_blanking_interval sameAs Q626978.
- Vertical_blanking_interval sameAs Q626978.
- Vertical_blanking_interval sameAs 垂直空白間隙.
- Vertical_blanking_interval wasDerivedFrom Vertical_blanking_interval?oldid=637210301.
- Vertical_blanking_interval isPrimaryTopicOf Vertical_blanking_interval.