Telephonic communications – Having light wave or ultrasonic link for speech or paging... – Including fiber optic link within telephone network
Patent
1995-03-14
1996-02-27
Kuntz, Curtis
Telephonic communications
Having light wave or ultrasonic link for speech or paging...
Including fiber optic link within telephone network
455 89, H04Q 720
Patent
active
054955190
ABSTRACT:
A control circuit is adapted for use in a wireless communication appliance, and particularly for an action phone. This circuit is equipped with an antenna which can receive magnetic waves sent off from the appliance or phone so as to generate a current which is further processed by a wave detector so as to obtain a very weak voltage. Such voltage is amplified into a large one, used to control the peripheral equipment operationally connected to the appliance or phone, such as a switch of a speaker of a handfree phone retainer, an alarm device or an automatic phone recorder, facilitating the operation of a wireless communication appliance or an action phone.
REFERENCES:
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patent: 4906989 (1990-03-01), Kasugai
patent: 5130634 (1992-07-01), Kasai
patent: 5184142 (1993-02-01), Hornburg et al.
patent: 5220685 (1993-06-01), Bradt et al.
Microelectronic Circuits, 3rd ed. Adel Sedra and Kenneth Smith, 1991, pp. 159, 163-165.
E Lead Electronic Co. Ltd.
Kuntz Curtis
Trost William G.
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