| 摘要 |
A system including a device equipped with a reception section, a reception condition detection section and a control section. A partner device emits laser light and modulates the laser light in accordance with transfer subject information. Relative positions of the partner device and the device are adjusted to a communication-possible position, at which the laser light from the partner device is incident in a light reception region of the device. In this state, the reception section receives the transmission subject information from the partner device by detecting the incident laser light and demodulating the transmission subject information therefrom. The reception condition detection section detects a deterioration in a reception condition. If a deterioration in the reception condition is detected, the control section produces a warning or stops emissions of laser light from the partner device.
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