Optical data transmission device, optical communication device, and automatic conveyance device
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United States of America Patent
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Sep 23, 2014
Grant Date -
Jun 20, 2013
app pub date -
Jun 29, 2011
filing date -
Jul 1, 2010
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Abstract
Reliable data transmission is secured without inviting large design changes by means of configuring an optical data transmission device in a manner so as to be provided with: data conversion units and optical communication control units that transmit to each of a first communication unit and a second communication unit disposed movably relative to one another an optical signal modulated in response to wired-line data input from a wired line, and that output wired-line data demodulated from the received optical signal to the wired line; a bit data input unit that receives input of bit data for emergency stops; a bit data output unit that outputs bit data for emergency stops; and bit data communication control units that control in a manner so as to transmit/receive input bit data via the optical communication control units using optical signals that are isolated from the optical signal corresponding to the wired-line data.
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