| 单词 | slow scan |
| 释义 | > as lemmasslow scan slow scan n. a system by which television or video images are scanned at a much slower rate than the standard speed, typically so that the resulting signal has a much smaller bandwidth and can be transmitted more easily or cheaply; frequently as a modifier. ΚΠ 1955 Sun (Baltimore) 7 Dec. (B ed.) 3/4 The so-called slow-scan system paints a picture every two seconds and requires only 8,000 cycles. 1955 Sun (Baltimore) 7 Dec. (B ed.) 3/5 Slow scan cannot handle objects in motion. 1970 N. Armstrong et al. First on Moon v. 110 TV was tried on Gordon Cooper's Mercury flight, using a slow-scan black and white camera. 1990 M. M. Mirabito & B. Morgenstern New Communications Technol. viii. 148/2 The second major category of videoconferencing is slow-scan, also known as freeze-frame videoconferencing. 2000 CCTV Solutions June 42/2 It can take as long as 20 seconds for a slow-scan transmitted frame to appear on a monitor for viewing. < as lemmas |
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