Data transmission apparatus enabling communication without...

Details Data transmission apparatus enabling communication without... Data transmission apparatus enabling communication without...

2011-06-07

2011-06-07

Liu, Shuwang (Department: 2611)

Pulse or digital communications

Systems using alternating or pulsating current

C375S250000, C375S260000, C375S262000, C375S295000, C375S316000, C340S010100, C340S010200

Reexamination Certificate

active

07957473

ABSTRACT:
A data transmission apparatus is provided, which is capable of performing good communication with a noncontact data carrier under the circumstances where pulse noise is generated. A noise detection circuit in a reader/writer detects a generation period of noise contained in received signals. A communication time calculating circuit calculates estimated time for communication to be performed for an IC card. A timing signal generation unit determines transmission start timing based on the noise generation period and the estimated communication time.

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Office Action dated Feb. 11, 2009 in corresponding German patent application No. 10 2007 034 009.7-31 (and English translation).

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