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Stereograms3d images. These are the tasks listed 1 to 10. |
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Stereograms3d images. These are the tasks listed 1 to 10. |
1. | H Tav | 5861 |
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2. | c. raj. | 5777 |
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3. | Nasrin 24 T | 5731 |
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4. | Fazil Hashim | 5718 |
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5. | Thinh Ddh | 5557 |
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6. | Alfa Omega | 4681 |
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7. | ![]() |
Djordje Timotijevic | 4549 |
8. | ![]() |
Mita Kojd | 4525 |
9. | Jakubovski Vladimir | 4443 |
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10. | Chandu Rajyaguru | 4419 |
Videotape recordingIn 1952, the first U.S. video recording on magnetic tape giving credible results of off-air black and white recordings was made by John T. Mullin at the electronics division of Bing Crosby Enterprises, Inc., Los Angeles, Cal. Using a Video Tape Recorder, the images on magnetic tape were not only one-third less costly than photographic methods, but were also immediately available to reproduce on a standard TV monitor tube as soon as the tape was rewound. The 12-head VTR used one-inch tape running at 120 inches per second to record ten tracks of monochrome video information, a clock track to control synchronization and an FM audio track. The basic theory was to use frequency division multiplexing with the 10 channels covering the desired video range. |