US 12,294,415 B2
Optical power supply system, power receiving side optical communication device and data transfer method
Kenta Ito, Musashino (JP); Hiroaki Katsurai, Musashino (JP); and Tomoaki Yoshida, Musashino (JP)
Assigned to Nippon Telegraph and Telephone Corporation, Tokyo (JP)
Appl. No. 18/035,646
Filed by Nippon Telegraph and Telephone Corporation, Tokyo (JP)
PCT Filed Nov. 20, 2020, PCT No. PCT/JP2020/043499
§ 371(c)(1), (2) Date May 5, 2023,
PCT Pub. No. WO2022/107339, PCT Pub. Date May 27, 2022.
Prior Publication US 2023/0421269 A1, Dec. 28, 2023
Int. Cl. H04B 10/80 (2013.01)
CPC H04B 10/807 (2013.01) 15 Claims
OG exemplary drawing
 
1. An optical power supply system comprising:
a power supply side optical communication apparatus; and
a power receiving side optical communication apparatus,
wherein the power supply side optical communication apparatus includes:
an optical power supply unit, including one or more processors, configured to transmit an optical signal for power supply;
a data transmission/reception unit, including one or more processors, configured to transmit and receive an optical signal of data; and
a data control unit, including one or more processors, configured to superimpose data transmission/reception control information related to transmission/reception of data transmitted/received by the data transmission/reception unit on the optical signal for power supply, and
the power receiving side optical communication apparatus includes:
a power storage medium configured to store power obtained from the optical signal for power supply transmitted by the optical power supply unit;
a control information detection unit, including one or more processors, configured to detect the data transmission/reception control information superimposed on the optical signal for power supply;
an optical transmission/reception unit, including one or more processors, configured to transmit and receive the optical signal of the data to and from the data transmission/reception unit;
an external transmission/reception unit, including one or more processors, configured to transmit and receive the data to and from an external apparatus;
a data storage medium configured to store data that has not been transmitted to the power supply side optical communication apparatus or the external apparatus; and
a data transfer control unit, including one or more processors, configured to transfer data received by the optical transmission/reception unit to the external transmission/reception unit and transfer data received by the external transmission/reception unit to the optical transmission/reception unit, the data transfer control unit being configured to calculate a data amount of data to be output to each of the optical transmission/reception unit and the external transmission/reception unit on the basis of the data transmission/reception control information detected by the control information detection unit and a data amount of the data stored in the data storage medium, output data equal to or less than a transferable data amount calculated on the basis of an amount of power stored in the power storage medium among the data of the calculated data amount to both or either of the optical transmission/reception unit and the external transmission/reception unit, and store the data exceeding the transferable data amount in the data storage medium.