US 11,955,032 B2
Sensor device and encryption method
Susumu Takatsuka, Tokyo (JP); Kenta Kawamoto, Kanagawa (JP); and Hiroki Tetsukawa, Kanagawa (JP)
Assigned to Sony Group Corporation, Tokyo (JP)
Appl. No. 17/312,242
Filed by Sony Group Corporation, Tokyo (JP)
PCT Filed Jan. 22, 2020, PCT No. PCT/JP2020/002121
§ 371(c)(1), (2) Date Jun. 9, 2021,
PCT Pub. No. WO2020/158540, PCT Pub. Date Aug. 6, 2020.
Claims priority of application No. 2019-013968 (JP), filed on Jan. 30, 2019.
Prior Publication US 2022/0028302 A1, Jan. 27, 2022
Int. Cl. G09C 1/00 (2006.01); H04L 9/08 (2006.01)
CPC G09C 1/00 (2013.01) [H04L 9/0869 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A sensor device comprising:
an array sensor in which a plurality of pixels including light-receiving elements for visible light or invisible light are arrayed 1-dimensionally or 2-dimensionally; and
an electronic processor configured to
generate an encryption key based on a photoelectric random number which is a random number obtained based on photoelectric conversion by the array sensor, and
encrypt a read signal from the plurality of pixels of the array sensor based on the encryption key that is generated, wherein
the electronic processor is further configured to generate the encryption key based on the photoelectric random number obtained during a first frame period different from a second frame period of the read signal which is an encryption target.