| 摘要 |
PURPOSE:To make communication possible even if a user moves by making it possible to carry separately only a receiver which can be miniaturized and is low in electric power consumption while a transmitter is left in its main unit. CONSTITUTION:For reception part 13, the interface with respective parts of transmitter 7 is so fixed that minimum and required functions for a portable receiver can be made separate and independent. Operation control part 12 controls reception part 13. Receiver 3, while detached from transmitter 7, provides reception with incorporated electric power source 14 independently of transmitter 7. Further, receiver 8, while equipped to transmitter 7, uses one electric power source 5 and then operating one operation control part 4 can exercise control on transmission and reception. |
