US 11,695,905 B2
Signal detection device, signal detection method, and storage medium
Toshiharu Arai, Akishima (JP)
Assigned to CASIO COMPUTER CO., LTD., Tokyo (JP)
Filed by CASIO COMPUTER CO., LTD., Tokyo (JP)
Filed on Jul. 22, 2022, as Appl. No. 17/871,691.
Application 17/871,691 is a continuation of application No. 16/715,125, filed on Dec. 16, 2019, granted, now 11,431,946.
Claims priority of application No. JP2018-235055 (JP), filed on Dec. 17, 2018.
Prior Publication US 2022/0360752 A1, Nov. 10, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. H04N 9/31 (2006.01); G03B 21/20 (2006.01)
CPC H04N 9/3155 (2013.01) [G03B 21/206 (2013.01); H04N 9/3176 (2013.01); H04N 9/3179 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A signal detection device comprising:
a first control unit; and
an input unit connected to the first control unit via a second control unit configured to be activated after the first control unit is activated and configured to input an external signal therefrom,
wherein the first control unit determines whether there has been an input of the external signal after the second control unit is activated.