Pseudo-Random Dot Scan Television Systems
- 1 July 1965
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Transactions on Broadcasting
- Vol. BC-11 (1), 11-21
- https://doi.org/10.1109/TBC.1965.265843
Abstract
The principal psychophysical requirements of the human eye are satisfied by a television frame frequency of about 1 or 2 c/s. To avoid flicker with such low-frame rates, a random dot scan is employed in conjunction with long-persistence phosphors. Experiments show that 15 per cent dot flicker is tolerable. Ten systems are discussed, including a two-million-element picture with 4-Mc/s bandwidth; tape recording at 15 in/s; continuous relaying of satellite pictures; short-wave transmission; phonevision; and very low-frame rate applications that use a scan conversion tube.Keywords
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