41. Most document cameras can also send a video signal to a computer via USB cable. 42. Video cards are designed for inputting and outputting video signals , and processing and manipulating video. 43. It is used to synchronise video signals together to put them on the same timing plane. 44. In wireless systems such as Cross Country's, transmitters beam video signals to antennas perched on homes. 45. The MXB can also output audio and video signals to a TV, VCR or video camera. 46. Terminals were little more than keyboards, with the servers directly generating video signals for each terminal. 47. In a composite video signal ( CVS ) there are two types of blanking : vertical. 48. Some models of monitors display a notice that the video signal uses an unsupported refresh rate. 49. Providing the best picture quality for interlaced video signals requires expensive and complex devices and algorithms. 50. The line doubler works by doubling the scan rate of the video signal sent to the monitor.
