US 12,264,965 B2
Receiving device, transceiver device, communication system, portable terminal device, and photodetection element
Hideaki Fukuzawa, Tokyo (JP); Tomohito Mizuno, Tokyo (JP); and Tetsuya Shibata, Tokyo (JP)
Assigned to TDK CORPORATION, Tokyo (JP)
Filed by TDK CORPORATION, Tokyo (JP)
Filed on Jun. 5, 2023, as Appl. No. 18/328,817.
Application 18/328,817 is a continuation of application No. 17/507,088, filed on Oct. 21, 2021, granted, now 11,703,380.
Claims priority of application No. 2020-178235 (JP), filed on Oct. 23, 2020; application No. 2021-103981 (JP), filed on Jun. 23, 2021; and application No. 2021-127523 (JP), filed on Aug. 3, 2021.
Prior Publication US 2023/0304856 A1, Sep. 28, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. G01J 1/42 (2006.01); H01F 10/32 (2006.01); H04B 10/40 (2013.01)
CPC G01J 1/42 (2013.01) [H01F 10/329 (2013.01); H04B 10/40 (2013.01)] 22 Claims
OG exemplary drawing
 
1. A receiving device comprising:
a magnetic element having a first ferromagnetic layer, a second ferromagnetic layer, and a spacer layer sandwiched between the first ferromagnetic layer and the second ferromagnetic layer,
wherein the first ferromagnetic layer is configured to be irradiated with light containing an optical signal with a change of intensity of the light,
wherein the receiving device is configured to receive the optical signal on a basis of an output voltage from the magnetic element,
wherein the intensity of the light applied to the first ferromagnetic layer is converted into the output voltage from the magnetic element corresponding to the intensity,
wherein the optical signal has intensities of at least two levels, and
wherein, under a condition that a magnitude of the output voltage from the magnetic element has a first value when the intensity of the light applied to the first ferromagnetic layer is a first intensity and has a second value when the intensity of the light applied to the first ferromagnetic layer is a second intensity and the second intensity is greater than the first intensity,
current flows from the first ferromagnetic layer to the second ferromagnetic layer when the second value is larger than the first value, and
current flows from the second ferromagnetic layer to the first ferromagnetic layer when the second value is smaller than the first value.