Transmission device, reception device, communication system, transmission method, reception method, and communication method
Provided is a device, which is a transmission device that can improve performance, that includes: a light source; and a transmitter that generates a modulated signal based on an input signal and transmits the modulated signal from the light source as visible light by changing a luminance of the light source in accordance with the modulated signal. The transmitter includes, in the modulated signal, a plurality of items of information related to service set identifiers (SSIDs) of a plurality of mutually different access points in a wireless local area network (LAN), and transmits the modulated signal from the light source.
1. A receiving method comprising:
receiving a light signal transmitted from a light transmission device;
demodulating the light signal to obtain an access information associated with an access point for a map data and an identifier of the light transmission device; and
obtaining the map data from the access point via a wireless signal that is not a light signal, based on the access information, wherein
the map data includes a location of the light transmission device and the identifier of the light transmission device, and the map data indicates an arrangement of constituent elements, the location of the light transmission device being indicated as a constituent element at a specific position on the map data.
2. A receiving apparatus comprising:
a light signal receiver that receives a light signal transmitted from a light transmission device and demodulates the light signal to obtain an access information associated with an access point for a map data and an identifier of the light transmission device; and
a processor that obtains the map data from the access point via a wireless signal that is not a light signal, based on the access information, wherein
the map data includes a location of the light transmission device and the identifier of the light transmission device, and the map data indicates an arrangement of constituent elements, the location of the light transmission device being indicated as a constituent element at a specific position on the map data.