A drone system and method. Audio signals are received via one or more microphones positioned relative to a location on a drone and one or more of the audio signals are identified as of interest. Flight characteristics of the drone are then controlled based on the audio signals that are of interest.

Embodiments include an implant and a method of operating the implant. The implant includes a receiver that receives first ultrasound signals emitted by an external transmitting unit of a further apparatus. The receiver includes a piezoelement, which is excited by the first ultrasound signals at a first resonance frequency (f1) and therefrom converts the mechanical energy transferred with the first ultrasound signals into electrical energy. In embodiments of the invention, the piezoelement is additionally excited at a second resonance frequency (f2), which differs from the first resonance frequency (f1), and at the second resonance frequency (f2) operates as a transmitter to transmit second ultrasound signals.

A mobile terminal including a display; a wireless communication processor configured to transmit a control signal to a content transmission device; and a controller configured to in response to an input for an execution of a content playback application, display a content playback setting screen on the display including a plurality of content reception devices, a plurality of input terminals of the content transmission device through which the content reception devices are connected to the content transmission device, and a plurality of thumbnail images corresponding to content data input via the respective input terminals, and in response to a selection of a first content reception device among the plurality of content reception devices and a selection of a first input terminal among the plurality of input terminals, transmit the content data received through the first input terminal of the content transmission device to the first content reception device, and in response to a selection of the first content reception device and a selection of a second input terminal among the plurality of input terminals, transmit the content data received through the second input terminal of the content transmission device to the first content reception device.

A mobile terminal including a display; a wireless communication processor configured to transmit a control signal to a content transmission device; and a controller configured to in response to an input for an execution of a content playback application, display a content playback setting screen on the display including a plurality of content reception devices, a plurality of input terminals of the content transmission device through which the content reception devices are connected to the content transmission device, and a plurality of thumbnail images corresponding to content data input via the respective input terminals, and in response to a selection of a first content reception device among the plurality of content reception devices and a selection of a first input terminal among the plurality of input terminals, transmit the content data received through the first input terminal of the content transmission device to the first content reception device, and in response to a selection of the first content reception device and a selection of a second input terminal among the plurality of input terminals, transmit the content data received through the second input terminal of the content transmission device to the first content reception device.

The invention is a system comprising a wire cage crustacean trap coupled to a remotely controlled subsystem operative to receive a control-coded acoustic signal and thereupon open an electrically controlled pneumatic valve allowing gas under pressure to be conveyed to a deflated bladder, such that the bladder inflates and brings the system to the surface. Backup systems will cause the valve to open when a preprogrammed time duration has elapsed and/or when a water leak is detected inside the remotely controlled subsystems water-tight container.

The invention is a system comprising a wire cage crustacean trap coupled to a remotely controlled subsystem operative to receive a control-coded acoustic signal and thereupon open an electrically controlled pneumatic valve allowing gas under pressure to be conveyed to a deflated bladder, such that the bladder inflates and brings the system to the surface. Backup systems will cause the valve to open when a preprogrammed time duration has elapsed and/or when a water leak is detected inside the remotely controlled subsystems water-tight container.

A reconfigurable implantable system for ultrasonic power control and telemetry includes a charging device that includes an ultrasonic transducer to transmit and receive ultrasonic signals transmitted through a biological body, and a signal generator to drive the ultrasonic transducer to transmit an ultrasonic charging signal through the biological body. The system further includes an implantable device configured to communicate wirelessly with the charging device through the biological body via an ultrasonic communication link between the implantable device and the charging device. An implantable ultrasonic transducer receives the ultrasonic charging signal from the charging device and transmits ultrasonic signals through the biological body. A power unit coupled to the ultrasonic transducer harvests energy from the received ultrasonic charging signal when the implantable device is in an energy harvesting mode. A communication unit is configured to switch the implantable device between the energy harvesting mode and an ultrasonic communication mode, and to read data from the sensing or actuation unit and transmit the data through the implantable ultrasonic transducer when the implantable device is in the ultrasonic communication mode.

A reconfigurable implantable system for ultrasonic power control and telemetry includes a charging device that includes an ultrasonic transducer to transmit and receive ultrasonic signals transmitted through a biological body, and a signal generator to drive the ultrasonic transducer to transmit an ultrasonic charging signal through the biological body. The system further includes an implantable device configured to communicate wirelessly with the charging device through the biological body via an ultrasonic communication link between the implantable device and the charging device. An implantable ultrasonic transducer receives the ultrasonic charging signal from the charging device and transmits ultrasonic signals through the biological body. A power unit coupled to the ultrasonic transducer harvests energy from the received ultrasonic charging signal when the implantable device is in an energy harvesting mode. A communication unit is configured to switch the implantable device between the energy harvesting mode and an ultrasonic communication mode, and to read data from the sensing or actuation unit and transmit the data through the implantable ultrasonic transducer when the implantable device is in the ultrasonic communication mode.

Systems and methods for utilizing a hybrid transmitter in an ultrasound system. A system can include a hybrid transmitter configured to transmit ultrasound waves toward a subject area. The hybrid transmitter can comprise a linear transmitter configured to generate linear transmitter output and a switching transmitter configured to generate switching transmitter output. The hybrid transmitter can also comprise a summer configured to sum the linear transmitter output and the switching transmitter output to generate hybrid transmitter output for driving a transducer load to generate the ultrasound waves transmitted towards the subject area. The ultrasound system can also comprise a receiver configured to receive one or more ultrasound waves from the subject area in response to the ultrasound waves transmitted toward the subject area for generating ultrasound images of the subject area.

Systems and methods for utilizing a hybrid transmitter in an ultrasound system. A system can include a hybrid transmitter configured to transmit ultrasound waves toward a subject area. The hybrid transmitter can comprise a linear transmitter configured to generate linear transmitter output and a switching transmitter configured to generate switching transmitter output. The hybrid transmitter can also comprise a summer configured to sum the linear transmitter output and the switching transmitter output to generate hybrid transmitter output for driving a transducer load to generate the ultrasound waves transmitted towards the subject area. The ultrasound system can also comprise a receiver configured to receive one or more ultrasound waves from the subject area in response to the ultrasound waves transmitted toward the subject area for generating ultrasound images of the subject area.