Telecommunications – Transmitter and receiver at same station – With a common signal processing stage
Patent
1993-12-07
1995-08-01
Eisenzopf, Reinhard J.
Telecommunications
Transmitter and receiver at same station
With a common signal processing stage
455343, 379 57, 379 58, H04B 138
Patent
active
054387019
ABSTRACT:
When a power supply of a mobile radio apparatus is turned on, a power supply change-over switch of a power supply control unit is changed over to the side of a pager unit to turn on only a power supply of the pager unit, so that a pager network which does not require position registration is utilized to perform intermittent receiving operation with low power consumption. When there is an incoming call to the pager unit, a CPU of the power supply control unit receives an incoming control signal from a pager decoding circuit and changes over the power supply change-over switch to the side of a radio-telephone line terminal unit to turn on the radio telephone line terminal unit and turn off the pager unit. The CPU sends a control signal to a timing control circuit of the radio-telephone line terminal unit so that the position registration is performed by utilizing a mobile radio network and an operation mode of the mobile radio apparatus proceeds to a usual talking mode. After a pager calling has been performed in a calling side, the mobile radio apparatus is called by the portable telephone number and talking is then is made. When the talking has been finished, the CPU receives a control signal from the timing control circuit and changes over the power supply change-over switch to the side of the pager unit again to turn on the pager unit to enter a waiting state for reception.
REFERENCES:
patent: 5054052 (1991-10-01), Nonami
patent: 5117449 (1992-05-01), Metroka et al.
Kato Osamu
Miya Kazuyuki
Nagase Taku
Yamada Daisuke
Eisenzopf Reinhard J.
Le Thanh
Matsushita Electric - Industrial Co., Ltd.
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