| 摘要 |
<p>A privacy communication method is performed by transmission of a signal from a transmitter (1) to a receiver (7) with the signal kept in a privacy state. To that end, an input signal is alternately subjected to compression and expansion in terms of the time base by means of a time base compressing/expanding circuit (3), whereupon the signal is transmitted from a transmitting circuit (5) through a transmitting antenna (6). The transmitted signal is received through a receiving antenna (8) by a receiving circuit (9) and is then alternately subjected to expansion and compression in terms of the time base of the received signal by means of a time base expanding/compressing circuit (10) in synchronism with the compression and expansion on the part of the transmitter, whereby the original signal is restored.</p> |
