A DVD recorder records video as a digital signal. A CD-ROM in a computer records video as a digital signal.
digital video camera
dv
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used to encode linear luminance or RGB values into video signals or digital video
A digital camcorder records video digitally. Video is usually recorded onto a removable memory disk.
Digital Video Broadcasting, or DVB is an accepted format for television broadcasting signals. There is a worldwide consortium that has patented the technology behind the various accepted television signals. This is so that all digital signals can be the same for all countries, as opposed to the analogue method of NTSC, Secam, and PAL.
S-Video will provide a clearer picture because it separates the signals. HDMI is suited for HD (high definition) signals and receivers because HDMI transmits the separate video signals into digital format.
Analog and digital video signals don't mix well so there are few interfaces that handle both. HDMI is purely digital and has no capacity to carry analog signals. RCA, phono or scart connections are analog with no provision to carry digital video. In broadcast studios, 75 ohm co-ax cable is used almost exclusively to carry video. The same cables will carry analog video or digital video depending on what they are connected to. The decision to make broadcast digital signal run on the same cable as analog video has greatly smoothed the transition to digital broadcasting. As far as domestic video is concerned, the only dual standard interface that is recognized is the DVI connector. Primarily a computer display interface, it carries digital video but will also handle analog VGA signals on the same cable. Furthermore, the two signals can be carried simultaneously and can be the same or different images. As the digital video component of a DVI interface is compatible with the video component of HDMI, it can carry broadcast signals as well as computer display data so it can be described as a video cable. Note that although DVI and HDMI are compatible, DVI does not carry the audio element of the signal whereas the HDMI interface does.
Video input is the motion pictures that are entered into the computer. For video input, video camera or any other video device is connected to a video capture card. the video captured card converts the analog video signals into digital signals that a computer can store and process.
HDMI is a digital replacement for existing analog video standards, such as 3D, an Ethernet data connection and improved audio and video capacity.
SDI stands for Serial Digital Interface. It is a standard for transmitting uncompressed digital video signals between devices, commonly used in television broadcasting and professional video production.
Primarily because digital systems are more accurate. Additionally, digital technology is replacing older systems with modern devices because digital devices are often much smaller, and require less maintenance.