Vertical synchronization (v-sync) refers generally to the synchronization of an event with the vertical blanking interval. Generally video displays are refreshed sequentially and on older CRT based displays, a short delay is required between updating the lowest horizontal line of the display and returning to refresh the highest. This delay, which is preserved by more modern display equipment, gives an opportunity in computer graphics to alter the contents of a framebuffer without visible graphical errors such as partially redrawn graphics or page tearing (when the top part of the display shows part of one frame and the bottom part shows of another). The vertical blanking interval (VBI) is an interval in a television or VDU signal that temporarily suspends transmission of the signal for the electron gun to move back up to the first line of the television screen to trace the next screen field. ... A display device is a device for visual presentation of images (including text) acquired, stored, or transmitted in various forms. ... Cathode ray tube employing electromagnetic focus and deflection Cutaway rendering of a color CRT Electron guns Electron beams Focusing coils Deflection coils Anode connection Mask for separating beams for red, green, and blue part of displayed image Phosphor layer with red, green, and blue zones Close-up of the phosphor... It has been suggested that CG artwork be merged into this article or section. ... The framebuffer is a part of RAM in a computer allocated to hold the graphics information for one frame or picture. ... Page tearing is a phenomenon in computer and video games where a previously rendered frame overlaps a newly rendered frame, creating a torn look as two parts of an object, most likely a wall, dont line up. ...

Computer games often allow vertical synchronization as an option, but is sometimes disabled because it has the effect of limiting frame rates to the monitor's refresh rate frequency. A computer game is a game composed of a computer-controlled virtual universe that players interact with in order to achieve a defined goal or set of goals. ... Frame rate, or frame frequency, is the measurement of how quickly an imaging device produces unique consecutive images called frames. ...