Word: discs
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Dates: during 1940-1949
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...Like disc jockeys the country over, Alan Cummings of Washington's WWDC was snowed under with requests for Mule Train; his listeners could not seem to hear it often enough. Early one morning last week, Cummings struck back: he began playing, one after the other, recordings of Mule Train as sung by Frankie Laine, Bing Crosby, Gordon MacRae, the Syncopators, Buzz Butler, Arthur Smith, Vaughn Monroe and Tennessee Ernie. Before long, the unrelieved barrage of whipcracks and clippity-clops jammed WWDC's switchboard with phone calls from desperate night owls crying "Uncle...
Color with Fields, In the CBS color system (called "field sequential"), the transmitting camera, like the ordinary black & white camera, has a single Image Orthicon "seeing" tube. In front of it is a spinning disc with segments of blue, green and red transparent plastic. When a blue segment is in front of the tube, the camera sees only the blue light coming from the scene being televised. When the disc has turned a little, putting a red segment in front of the tube, the camera sees only the scene's red light. Next, it sees green through a green...
...disc is properly synchronized with the scanning speed of the tube, one-color "fields" go out over the airwaves and appear one after the other on the face of the receiving "picture" tube. All of them are white, since the "phosphor" (the luminescent substance) on the tube's face glows only in white light. But in front of the receiving set's picture tube is a second spinning "color disc" (see diagram). This disc is synchronized so that a blue segment is between the tube and the eye of the viewer whenever a "blue" field is flashing...
Color with Dots. RCA's system, called "dot interlacing," is entirely electronic, needs no spinning disc. In the transmitting camera are three tubes. In front of them is a system of "dichroic mirrors" (see below) which allow each tube to "see" in one color only. All three tubes scan the scene continuously, but an electronic switching device, turning their signals on & off 11.4 million times a second, allows each tube to transmit over the telecasting station only one-third of the time. In this way the "video signals" from all three tubes are strung together like trains made...
...time operator, Monroe still finds time for table-hopping between sets, shaking hands with visiting record salesmen from the Midwest, jawing with disc jockeys from upstate, planning his next cross-country dash. Says he: "You keep in business by keeping in touch with the people . . . playing for everyone there is to play...