| 摘要 |
<p>An electronic selector for the exchange of PAM or PCM coded information without blocking is disclosed in which the number of outlets of the selector is equal to the number of inlets. Between each of the inlets and the outlets of the selector, an analog shift register is connected which for each pair of inlets and outlets comprises a first and a second stage. Each first stage is controlled by a selector inlet control unit which cyclically and sequentially activates the first stages, so that each PAM or PCM unit of information appearing on an inlet is stored in the first stage. The selector also contains a selector outlet control unit which, in dependence on a marker, cyclically activates a predetermined one of the second stages, so that the information stored in the first stage is transferred to the predetermined second stage and thereby to the desired outlet of the selector.</p> |
