The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
Oct. 27, 2009

Filed:

Feb. 26, 2003
Applicant:

Zang-hee Cho, Suwon-shi, KR;

Inventor:

Zang-Hee Cho, Suwon-shi, KR;

Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06K 19/06 (2006.01); G06K 7/06 (2006.01);
U.S. Cl.
CPC ...
Abstract

An integrated circuit device having multiple communication modes is provided. The integrated circuit device includes a transceiver coupled to first and second data lines. The integrated circuit device further includes a voltage control circuit. The voltage control circuit determines whether or not an external device is connected to the integrated circuit device. In the case where the external device is connected to the integrated circuit device, the voltage control circuit controls the voltage of the first data line so as to cause the external device to not recognize the integrated circuit device for a predetermined time.


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