Systems and methods for visual light communication in an underwater environment are provided. The system can include a master control station that determines an amount of impairment of a water medium and selects one of a wired and wireless communication transceiver for exchanging communications with communication device located in the water. The system can also include a first gateway that exchanges radio frequency signals with the master control station and provides visual light communication signals to devices located in the water. The system can also include a second gateway that can exchange both visual light communication signals and acoustic communication signals with other devices located in the water.

 
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< Receiving apparatus and image receiving apparatus directed to a user viewing analog broadcasts preferentially

> Method of activating a data phase locked loop during track-seeking and apparatus of operating the same

> Optical storage apparatus, preamplifier and method of generating tracking error signal thereof

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