Transmitter, transmitting method, and receiving method

A transmitting method, comprising:

• generating a control voltage corresponding to a pattern of the change in an amount of light emitted, wherein the pattern in which one of a plurality of amounts of light emitted occurs indicates a signal to be transmitted;
• and
• receiving, through a liquid crystal board, reflected light that is sunlight reflected by a reflector, and transmitting the signal to a receiver by changing the pattern according to the control voltage to be applied to the liquid crystal board,
• wherein the liquid crystal board changes the reflected light passing through rate to a high passing through rate when one of the plurality of amounts of light emitted occurs, and changes the reflected light passing through rate to a low passing through rate when another one of the plurality of amounts of light emitted occurs.

A transmitter, comprising:

• a controller configured to generate a control voltage corresponding to a pattern of the change in an amount of light emitted, wherein the pattern in which each one of a plurality of amounts of light emitted occurs indicates a signal to be transmitted;
• and
• a liquid crystal board that receives sunlight and transmits the signal to a receiver by changing the amount of light emitted toward the receiver according to the control voltage,
• wherein the sunlight passes through the liquid crystal board, and the liquid crystal board changes the sunlight passing through rate to a high passing through rate when one of the plurality of amounts of light emitted occurs, and changes the sunlight passing through rate to a low passing through rate when another one of the plurality of amounts of light emitted occurs.

A transmitting method, comprising:

• generating a control voltage corresponding to a pattern of a change in an amount of light emitted, wherein the pattern in which each one of a plurality of amounts of light emitted occurs indicates a signal to be transmitted;
• receiving, through a liquid crystal board, sunlight;
• and
• transmitting a signal to a receiver by changing the amount of light emitted according to the control voltage,
• wherein the sunlight passes through the liquid crystal board, and the liquid crystal board changes the sunlight passing through rate to a high passing through rate when one of the plurality of amounts of light emitted occurs, and changes the sunlight passing through rate to a low passing through rate when another one of the plurality of amounts of light emitted occurs.