Apparatus and method of controlling emitting color of visible light according to a current communication state in a VLC device
First Claim
1. An apparatus for controlling an emitted color of visible light in a visible light communication (VLC) device according to a current communication state, said apparatus comprising:
- a memory for storing data identifying one or more communication states and an associated plurality of emitting colors that are correspondingly matched to the one or more communication states to indicate each respective communication state;
a pulse generator for generating a pulse signal corresponding to data to be transmitted;
a modulator for modulating the pulse signal output from said pulse generator into a signal suitable for optical wireless communication;
a VLC transmitter for outputting a visible light signal having a particular corresponding emitting color based on a color control signal; and
a controller for determining a current communication state of the VLC device and an associated emitting color corresponding to the current communication state stored in the memory, and for providing the VLC transmitter with the color control signal to output a visible light signal having a particular corresponding emitting color based on the current communication state.
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Abstract
An apparatus and method for controlling the emitted color of visible light according to the current communication state in a visible light communication (VLC) device. The method includes storing one or more communication states and emitting colors that are correspondingly matched to the one or more communication states to indicate each of the various communication states. The VLC also checks, which can be based upon selection of a VLC mode, the current communication state and an emits a color that corresponds to the current communication state and emits the checked color of light to provide a visible light signal that indicates communication status to a user.
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Citations
16 Claims
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1. An apparatus for controlling an emitted color of visible light in a visible light communication (VLC) device according to a current communication state, said apparatus comprising:
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a memory for storing data identifying one or more communication states and an associated plurality of emitting colors that are correspondingly matched to the one or more communication states to indicate each respective communication state; a pulse generator for generating a pulse signal corresponding to data to be transmitted; a modulator for modulating the pulse signal output from said pulse generator into a signal suitable for optical wireless communication; a VLC transmitter for outputting a visible light signal having a particular corresponding emitting color based on a color control signal; and a controller for determining a current communication state of the VLC device and an associated emitting color corresponding to the current communication state stored in the memory, and for providing the VLC transmitter with the color control signal to output a visible light signal having a particular corresponding emitting color based on the current communication state. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 16)
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10. A method of controlling an emitted color of visible light state in a visible light communication (VLC) device including a VLC transmitter according to a current communication, the method comprising the steps of:
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storing data identifying one or more communication states and a plurality of associated emitting colors that are correspondingly matched to the one or more communication states of the visible light communication (VLC) device; checking, when said VLC device is operating in a VLC mode, a current communication state and an associated emitting color of light corresponding to the current communication state; and emitting the associated color of light as a visible light signal for providing visible operational status of the VLC device. - View Dependent Claims (11, 12, 13, 14, 15)
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Specification