Communications: electrical – Condition responsive indicating system – Specific condition
Reexamination Certificate
2008-04-01
2008-04-01
Nguyen, Hung (Department: 2612)
Communications: electrical
Condition responsive indicating system
Specific condition
C340S572200, C340S572400, C340S572700, C340S539100, C340S870030
Reexamination Certificate
active
11039824
ABSTRACT:
An IC chip and a minute antenna for conducting transmission with a weak radio wave are mounted on a male connector. An auxiliary antenna for amplifying the weak radio wave emitted by the minute antenna and transmitting the amplified radio wave is mounted on a female connector. If the male connector is fitted into the female connector normally, then the distance between the minute antenna and the auxiliary antenna becomes 1.0 mm or less, and consequently the weak radio wave transmitted by the minute antenna is amplified by the auxiliary antenna and transmitted to the outside. Unless fitting is conducted normally, then the distance between the minute antenna and the auxiliary antenna becomes longer than 1.0 mm, and consequently the weak radio wave emitted the minute antenna is not amplified and transmitted. By receiving the information stored on the IC chip, the fitting state of the connectors can be checked.
REFERENCES:
patent: 5357091 (1994-10-01), Ozawa et al.
patent: 6993298 (2006-01-01), Licht
patent: 2005/0253726 (2005-05-01), Yoshida et al.
patent: 2005/0215119 (2005-09-01), Kaneko et al.
patent: 2006/0049942 (2006-03-01), Sakama et al.
patent: 2004-152543 (2003-12-01), None
patent: 2004-152543 (2004-05-01), None
English translation of German language—Finkezeller, K., RFID Handbook, 2002, 5 pages.
German language—Finkezeller, K., RFID Handbook, 2002, pp. 29-61.
Ashizawa Minoru
Sakama Isao
Hitachi , Ltd.
Nguyen Hung
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