Facsimile (Fax) Machine
Facsimile Fax (short for facsimile, from Latin fac simile, “make similar”, i.e. “make a copy”) is a telecommunications technology used to transfer copies (facsimiles) of documents, especially using affordable devices…
Colour Signal Transmission
Colour Signal Transmission Colour Signal Transmission: The colour video signal contains two independent pieces of information, that of hue and saturation. It is a difficult matter to modulate them to…
Solid-State Image Scanners
Solid-State Image Scanners Solid-State Image Scanners: The operation of solid-state image scanners is based on the functioning of charge-coupled devices (CCDs) which is a new concept in metal-oxide-semiconductor (MOS) circuitry.…
Precision In-Line (PIL) Color Picture Tube
Precision In-Line (PIL) Picture Tube Precision In-Line (PIL) Picture Tube as the name suggests has three guns that are aligned precisely in a horizontal line. In this, all three guns…
Delta Gun Color Picture Tube
Delta Gun Color Picture Tube Delta Gun color picture tubes employ three separate Guns, equally spaced at 120 degrees with respect to each other, generates three high velocity (25 kV…
Composite Video Signal -Video Signal Dimensions
Composite Video Signal Composite video signal comprises of a camera signal relating to the desired picture data, blanking pulses to make the retrace invisible, and synchronizing pulses to synchronize the…
Television (TV) Cameras
Television Cameras or TV Cameras The television cameras or tv cameras are used to convert the optical information or picture into an electronic signal. TV cameras are stored this information…
PLUMBICON CAMERA TUBE
PLUMBICON CAMERA TUBE The plumbicon camera tube is developed by Philips in 1963 to remove the problem of image lag in vidicon. It has a photoconductive target plate of lead…
Vidicon camera tube | Working, Application
Vidicon camera tube The Vidicon camera tube is based on the photoconductive properties of semiconductors. When light falls on it, the number of free electrons created at any point is…
Image Orthicon Camera Tube
Image orthicon camera tube was developed in 1945 by Radio Corporation of America (RCA). It is a sensitive tube and handling a wide range of light values and contrast. This…