Transmitter, transmitting method, and receiving method

Patent metadata

Field	Value
Publication number	US-2016259192-A1
Application number	US-201615157598-A
Country	US
Kind code	A1
Filing date	May 18, 2016
Priority date	Feb 19, 2014
Publication date	Sep 8, 2016
Grant date	—

Abstract

A transmitter includes 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 one of a plurality of amounts of light emitted occurs indicates a signal to be transmitted, and a reflector that reflects sunlight. The transmitter also includes a liquid crystal board that receives reflected light that is sunlight reflected by the reflector and transmits the signal to a receiver by changing the amount of light emitted toward the receiver according to the control voltage. The liquid crystal board changes the reflected light passing through rate to a high passing through rate when one of the plurality of the 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.

First claim

We claim:

1 . A transmitter, comprising:
a controller configured to generate a control voltage corresponding to a pattern of a 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; a reflector that reflects sunlight; and a liquid crystal board that receives reflected light that is sunlight reflected by the reflector and transmits the signal to a receiver by changing the amount of light emitted toward the receiver according to the control voltage, wherein, the liquid crystal board changes the reflected light passing through rate to a high passing through rate when one of the plurality of the 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.

2 . The transmitter according to claim 1 ,
wherein the controller is a processor, and the processor executes operations including generating the control voltage corresponding to the pattern of the change in the amount of light emitted.

3 . The transmitter according to claim 1 ,
wherein the controller is circuitry, and the circuitry executes operations including generating the control voltage corresponding to the pattern of the change in the amount of light emitted.

4 . 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.

5 . A non-transitory recording medium having a computer program stored thereon, the computer program causing a processor to execute operations according to claim 4 .

6 . 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.

7 . The transmitter according to claim 6 ,
wherein the controller is a processor, and the processor executes operations including generating the control voltage corresponding to the pattern of the change in the amount of light emitted.

8 . The transmitter according to claim 6 ,
wherein the controller is circuitry, and the circuitry executes operations including generating the control voltage corresponding to the pattern of the change in the amount of light emitted.

9 . 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.

10 . A non-transitory recording medium having a computer program stored thereon, the computer program causing a processor to execute operations according to claim 9 .

Assignees

• Panasonic Ip Corp America

Inventors

• Aoyama Hideki
• Oshima Mitsuaki

Classifications

• G02F1/13306 Primary

  Circuit arrangements or driving methods for the control of single liquid crystal cells (G02F1/132, G02F1/133382 take precedence) · CPC title

• G02F1/133528

  Polarisers · CPC title

• G02F1/133553

  Reflecting elements (associated to illuminating devices G02F1/133605) · CPC title

• G02F1/1336

  Illuminating devices · CPC title

• G02F1/133524

  Light-guides, e.g. fibre-optic bundles, louvered or jalousie light-guides · CPC title