| 摘要 |
<p>In a pager receiver operable in response to a call signal comprising a first part including a call number signal, a second part including a message signal, and an intermediate part placed between the first and second parts, the intermediate part conveys a time interval signal representative of a length of a message carried by the message signal. When the call number signal is destined to the pager receiver, a receiving circuit is put into an operating mode during the length of the message. Otherwise, the receiving circuit is kept in a nonoperating mode during the length of the message. The time interval signal is therefore detected even when the call number signal is not destined to the pager receiver. The intermediate part may comprise a message control signal defining message control operations of the pager receiver and a time signal for specifying a transmission time instant of the message signal. A wide variety of the message control operations can be designated by the message control signal.</p> |
