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Mobile telephone device with low power consumption

  • US 5,054,052 A
  • Filed: 07/06/1989
  • Issued: 10/01/1991
  • Est. Priority Date: 04/03/1989
  • Status: Expired
First Claim
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1. A mobile telephone device comprising:

  • an antenna for transmitting or receiving a first high frequency signal having either a voice signal or a control signal modulated thereon and receiving a second high frequency signal having a paging signal modulated thereon;

    receiver means connected to the antenna and the below recited control means for demodulating the first high frequency signal received with said antenna to a base band signal;

    transmitter means connected to the antenna and the below recited control means for modulating a base band signal of either a voice signal or control signal to generate an outgoing signal of the first high frequency via the antenna;

    paging signal receiver means connected to the antenna for extracting the paging signal from the second high frequency signal received by said antenna;

    data modulation/demodulation means connected to said transmitter means and receiver means so as to convert either an incoming control signal or an outgoing digital control signal received by or to be output from the antenna;

    frequency synthesizer means providing a tuned frequency for said transmitter means and receiver means and connected therebetween;

    voice inputting means and voice outputting means for inputting and outputting voice signals into and from said device;

    voice signal processing means for processing voice signals inputted from the voice inputting means to output it to said transmitter means and further processing a base band signal inputted from said receiving means to output it to said voice outputting means;

    operator input means for outputting control signals selected by an operator to a control means within the device;

    display means for displaying a calling party'"'"'s telephone number received by the paging signal receiver means;

    said control means being responsive to a control signal from said operator input means for causing the display of the calling party'"'"'s telephone number on said display means;

    instantaneous calling means contained in said operator input means, for detecting the calling party'"'"'s telephone number in a paging signal outputted by said paging signal receiver means and outputting said calling party'"'"'s telephone number as said outgoing digital control signal to said data modulation/demodulation means in response to an excitation signal inputted by an operator to said operation input means;

    power supply means for supplying electrical power to said telephone device, said power supply means being connected to each of the foregoing means of the mobile telephone device; and

    power supply control means connected to said power supply means for shutting off the supply of electrical power from said power supply means to at least said frequency synthesizer means when waiting for an incoming paging signal.

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