Introduces two usual remote control signal encoding methods: pulse width modulation, pulse space ratio modulation.

介绍了两种常用的红外遥控信号的编码方法：脉冲占空比编码调制，脉冲宽度编码调制。

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The remote control for back-up signal management.

备份信号的遥控管理。

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The car is fitted with a remote immobilizer and a radio signal from a control center miles away will ensure that once the thief switches the engine off, he will not be able to start it again.

车上已经被装了远程制动装置，一个几英里以外的控制中心发来的无线信号将确保盗贼一旦启动引擎，他就不能再次发动汽车了。

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The signal from the electrodes would be processed by the electronic circuitry and converted into an infrared signal, similar to that used in a TV remote control.

BBC: Medicine over the mobile network