Appeal No. 1998-0225
Application No. 08/503,817
The invention pertains to a wireless communication system. More particularly, in a
short range communication system employing a magnetic field induced between terminal
devices, the invention utilizes a magnetic impedance element (MI) in the data reception
circuit. The MI element has an impedance component which varies substantially in
response to an applied alternating magnetic field. The use of the MI element is said to
facilitate accurate reception over a wide range of frequencies.
Representative independent claim 2 is reproduced as follows:
2. A wireless communication system for communicating using only a
magnetic field component, comprising: a transmission portion having a
magnetic field generating system and a magnetic field modulating
mechanism for converting data into a magnetic field which changes in
strength in accordance with the data; and a reception portion having a
magnetic impedance element for detecting the modulated magnetic field
generated by the transmission portion, the magnetic impedance element
having an impedance which changes in accordance with the detected
modulated magnetic field.
The examiner relies on the following references:
Takeuchi et al. (Takeuchi) 3,898,565 Aug. 05, 1975
Albee 3,953,799 Apr. 27, 1976
Salisbury 4,363,137 Dec. 07, 1982
Claims 2 and 4-14 stand rejected under 35 U.S.C. § 103 as unpatentable over
Takeuchi and Salisbury in view of Albee.
Reference is made to the briefs and answer for the respective positions of
2
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