WIRELESS CHARGER WITH THE FUNCTION OF ULTRASONIC SUPPRESSION OF THE SOUND RECORDING PATH OF THE MOBILE DEVICE BEING CHARGED Russian patent published in 2022 - IPC H02J7/00 H04K3/00 H02J50/10 

FIELD: electrical engineering.

SUBSTANCE: invention relates to the field of electrical engineering, in particular to devices for recharging a smartphone, as well as to the field of protecting information from unauthorized access to it, to protecting devices that transmit information via acoustic channels, in particular to methods for suppressing sound recording devices using ultrasound. The device includes a housing configured to accommodate a rechargeable mobile device. A microcontroller module housed in said housing is connected by electrical circuits to two wireless charging transmitters, each of which includes a wireless charging controller and an induction transmitting coil connected to said wireless charging controller. The microcontroller module is connected by electrical circuits to the controller of the ultrasonic suppressor connected to at least two ultrasonic emitters located in the housing at least on one side of the mobile device being charged. The radiation pattern of said ultrasonic emitters is directed to a mobile device containing a sound recording device.

EFFECT: protection of information from listening by specialized means, which may be microphones in a smartphone or voice recorders.

12 cl, 6 dwg