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Contactless digital power transmission and reception system in a radio telephone

  • US 5,396,538 A
  • Filed: 12/24/1991
  • Issued: 03/07/1995
  • Est. Priority Date: 10/25/1991
  • Status: Expired due to Term
First Claim
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1. A contactless digital power transmission and reception system in a radio telephone using a battery, comprising:

  • charging energy generating means for generating an induction voltage of an electromagnetic field in response to an alternating current voltage, said charging energy generating means comprising voltage invertor means for inverting a direct current voltage into the alternating current voltage in response to a pulse signal, and induction voltage generator means connected to said voltage invertor means for generating said induction voltage of said electromagnetic field in response to said alternating current voltage from said voltage invertor means; and

    portable means inductively connectable with said charging energy generating means, for rectifying the induction voltage of said electromagnetic field, and for supplying the rectified induction voltage to the battery as a charging voltage, said portable means being detachable and removable from said charging energy generating means;

    whereby the battery is charged with said induction voltage when said portable means is inductively connected with said charging energy generating means and alternatively, said induction voltage charged into the battery is supplied to said portable means when said portable means is inductively removed from the charging energy generating means.

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