A filtering device includes a filtering circuit that connects a voltage source to a sensor and a switching circuit connected in parallel with the filtering circuit that allows current from the voltage source to bypass the filtering circuit and flow through the switching circuit. The switching circuit receives a mode signal from the sensor that indicates whether the sensor is in a high current or a low current mode, the switching circuit closes when the sensor is in the high current mode, and the switching circuit is opens when the sensor is in the low current mode.

Provided is a refrigerator. The refrigerator is characterized by enabling at least a part of a refrigerator door to be selectively transparent by a user's operation, such that the user sees through an inside of the refrigerator while the refrigerator door is closed.

A surgical instrument is disclosed. The surgical instrument includes a drive system and a control circuit. The drive system includes an electric motor. The control circuit includes an acoustic sensor, and is configured to utilize a parameter of the drive system measured by the acoustic sensor to control a speed of the electric motor.

A method for controlling operation of a power switch includes obtaining, by one or more processors of a power switch, data indicative of one or more non-contact gestures. The method includes determining, by the one or more processors, a control action based at least in part on the data indicative of the one or more non-contact gestures. The method includes implementing, by the one or more processors, the control action.

A filtering device includes a filtering circuit that connects a voltage source to a sensor and a switching circuit connected in parallel with the filtering circuit that allows current from the voltage source to bypass the filtering circuit and flow through the switching circuit. The switching circuit receives a mode signal from the sensor that indicates whether the sensor is in a high current or a low current mode, the switching circuit closes when the sensor is in the high current mode, and the switching circuit is opens when the sensor is in the low current mode.

A power door system for a vehicle including a plurality of power-operated doors is provided. The system includes a passive remote entry device configured to emit a signal to one or more cooperating vehicle receivers and a controller configured to cause the power door system to open the at least one power-operated door when the passive remote entry device signal is received and an individual is detected in a predefined activation zone for a predetermined period of time. The system further includes a vehicle-mounted user detection device. The passive remote entry device may be selected from the group consisting of a key fob, a smart key, a key card, a cellular telephone or smartphone configured with a phone-as-a-key function, a Bluetooth-activated and vehicle-recognized cellular telephone, a Bluetooth-activated and vehicle-recognized smartphone, and a Bluetooth-activated and vehicle-recognized smartwatch. Methods for controlling a power door system for a vehicle are described.

A method for switching a screen state, a terminal, and computer-readable medium are provided. The method includes: transmitting a transmission sound wave when it is detected that the screen state of the terminal is in a light-on state during a voice communication session, the transmission sound wave being a sound wave of a pre-defined frequency; determining a target detection region when a target receiving sound wave is received through a plurality of pre-installed sound wave receiving devices, the target receiving sound wave being formed by reflecting the transmission sound wave by a target object; and switching the screen state of the terminal from the light-on state into a light-off state when it is determined that the target object is located in the target detection region.

Provided is a refrigerator. The refrigerator is characterized by enabling at least a part of a refrigerator door to be selectively transparent by a user's operation, such that the user sees through an inside of the refrigerator while the refrigerator door is closed.

Provided is a refrigerator. The refrigerator is characterized by enabling at least a part of a refrigerator door to be selectively transparent by a user's operation, such that the user sees through an inside of the refrigerator while the refrigerator door is closed.

Provided is a refrigerator. The refrigerator is characterized by enabling at least a part of a refrigerator door to be selectively transparent by a user's operation, such that the user sees through an inside of the refrigerator while the refrigerator door is closed.