Page 280 - The ROV Manual - A User Guide for Remotely Operated Vehicles 2nd edition

FIGURE 10.26
Composite video connectors for (a) consumer (RCA) and (b) commercial (BNC).
3. Analog YPbPr
4. Analog RGB
5. Analog S-Video 6. Analog Composite
Figure 10.26 displays standard composite video connectors for both consumer (RCA) and commer- cial (BNC) formats.
10.2.6 The transmission (RF modulation)
Once the baseband signal is generated, the various portions of the paired audio/video signal are sep- arated and then modulated for transmission on carrier waves to the receiver for rendering (Figure 10.27). The luminance, chrominance, and audio carrier are transmitted at separate frequen- cies and modulated at the receiving end into television channels for blending into the final display picture.
The typical consumer television set allows for capture of either composite or modulated video signals. The modulated analog (or, more recently, digital) signal is generally transmitted via coax cable while the composite signal is transmitted via regular copper wire. DVD and various analog video players transmit to a television display via either composite or modulated. The composite feed is generally a straight feed/capture out of the player into the display (with a standard RCA or BNC connector) while the modulated feed will require assigning a television channel (typically channel 3 or 4—manually selected on both the output and the input devices) for display/capture transmitted over a coax cable with F-type connectors (Figure 10.28(a) and (b)). BNC and RCA con- nectors are typically for baseband coax cabling with signal transmission while modulated signal transmission uses F-type connectors.
10.3 Digital video
Digital video evolved in the 1980s as a simple digitalization of analog video for video-editing pur- poses. Eventually, it took on a life of its own as standards evolved to streamline this new medium. While analog video comprises a series of video frames, digital video portrays a series of bitmap
10.3 Digital video 269