Radio-type transmitting device, container,...

Details Radio-type transmitting device, container,... Radio-type transmitting device, container,...

2006-07-03

2010-10-26

La, Anh V (Department: 2612)

Communications: electrical

Condition responsive indicating system

Specific condition

C340S618000, C340S603000, C340S572100, C073S29000R

Reexamination Certificate

active

07821410

ABSTRACT:
A radio-type transmitting device capable of transmitting information other than information in an internal memory is provided. A RFID tag includes a encoding circuit for digitalizing receiving sensitivity of a radio wave sent from an external transmitting/receiving apparatus and then sending the digitalized receiving sensitivity to the external transmitting/receiving apparatus. Thus, the external transmitting/receiving apparatus can obtain a distance between the external transmitting/receiving apparatus and the RFID tag based on received sensitivity information.

REFERENCES:
patent: 6546795 (2003-04-01), Dietz
patent: 7107836 (2006-09-01), Brookner
patent: 7142124 (2006-11-01), Chi et al.
patent: 2004/0004545 (2004-01-01), Early
patent: 6-325229 (1994-11-01), None
patent: 9-130999 (1997-05-01), None

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