Title: Device for transmission of information from an information emitter to an information seeker

Abstract: A device for automatic transmission of information includes an information emitter and an information seeker wherein the information is transmitted from the emitter to the seeker in response to an interrogating signal from the information seeker. The emitter relies for transmission on energy which is extracted from the interrogating signal. The emitter is provided with several resonant circuits, each of which generates an information signal component. The information carrying signal comprises a multitude of such signal components. From the information carrying signal the information is captured by detection in the information seeker of the respective information signal components.

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Inventors: Gustavsson, Per-Olof Gerhard (Pixbo, SW)
Morwing, Bo Anders (Molndal, SW)

Application Number: 520975
Filing Date: 1974-11-05
Publication_date: 1976-09-21
Assignee: Telefonaktiebolaget L M Ericsson (Stockholm, SW)
Primary Class(es): 342/50
Other Classes:
US Patent Ref:

3389391	Jun, 1968	Keeler et al.	343/6.
3406391	Oct, 1968	Le Vo, Jr.	343/6.
3427613	Feb, 1969	Kawahara et al.	343/6.
3427614	Feb, 1969	Vinding	343/6.
3713148	Jan, 1973	Cardullo et al.	343/6.
3737911	Jun, 1973	Sakuragi	343/6.
3745569	Jul, 1973	Works	343/6.

Other Refs:
Primary Examiner: Wilbur, Maynard R.
Assistant Examiner: Buczinski, S. C.
Attorney: Hane, Baxley & Spiecens