| 摘要 |
An optical transmitter is equipped with a transmitted pulse modulator at which a plurality of optical transmission patterns have previously been stored. The respective stored optical transmission patterns have mutually different ratios between infrared pulse ON times and OFF times. The optical output of infrared signal(s) transmitted from an optical transmitter is made variable as a result of the fact that infrared pulse(s) output during infrared output period(s) is/are output in accordance with an optical transmission pattern which is selected from among the plurality of optical transmission patterns.
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