An apparatus for performing a medical procedure is disclosed. The apparatus includes a sensor adapted to convert an ultrasonic signal incident thereon into an electrical signal; and a wireless transceiver configured to receive the electrical signal from the sensor, and to transmit the electrical signal to a wireless receiver remotely located from the apparatus.

A system for a vehicle includes an ultrasonic sensor including a layer of material such that vibration of the material is indicative of frequency of transmitted and received ultrasonic signals, and a controller configured to, through electrical excitation, cause the material to vibrate to transmit an inquiry ultrasonic signal and, responsive to receiving from an object an acknowledgement ultrasonic signal having frequency different from frequency of the inquiry signal, steer the vehicle from the object.

A system for a vehicle includes an ultrasonic sensor including a layer of material such that vibration of the material is indicative of frequency of transmitted and received ultrasonic signals, and a controller configured to, through electrical excitation, cause the material to vibrate to transmit an inquiry ultrasonic signal and, responsive to receiving from an object an acknowledgement ultrasonic signal having frequency different from frequency of the inquiry signal, steer the vehicle from the object.

A system and a method, as well as a positioning and wearable devices for determining the distance and position of devices communicating with each other over a medium, the system, are disclosed. At least one remote device comprises first processing unit, at least one transmitter functionally connected to the first processing unit and adapted to transmit signals over a medium, and at least one receiver functionally connected to the first processing unit and adapted to receive signals over said medium. At least two wearable devices, each comprising a second processing unit and wireless communication means capable of receiving and sending data signals over said medium, are also provided. The remote device is adapted to determine the distance to at least two wearable devices, to determine the direction to said at least two wearable devices based on at least two different bearings taken from said at least one remote device to each wearable device, to calculate the position of said at least two wearable devices relative to the remote device, and to communicate the position of at least one first wearable device to a second wearable device. The wearable devices are adapted to process the position of a first wearable device in their processing unit and to present to the user of a second wearable device an indication of direction and distance to said first wearable device.

[Object] To enable both a reduction in the number of sound collection portions and an improvement in a resolution in estimation of a direction of a sound source to be compatible.

[Solution] An information processing device including: an acquisition unit configured to acquire a sound collection result of a sound from each of one or more sound sources obtained by a sound collection portion of which positional information indicating at least one of a position and a direction is changed; and an estimation unit configured to estimate a direction of each of the one or more sound sources on a basis of a change in a frequency of a sound collected by the sound collection portion in association with a change in the positional information of the sound collection portion.

An apparatus for performing a medical procedure is disclosed. The apparatus includes a sensor adapted to convert an ultrasonic signal incident thereon into an electrical signal; and a wireless transceiver configured to receive the electrical signal from the sensor, and to transmit the electrical signal to a wireless receiver remotely located from the apparatus.

A system and a method, as well as a positioning and wearable devices for determining the distance and position of devices communicating with each other over a medium, the system, are disclosed. At least one remote device comprises first processing unit, at least one transmitter functionally connected to the first processing unit and adapted to transmit signals over a medium, and at least one receiver functionally connected to the first processing unit and adapted to receive signals over said medium. At least two wearable devices, each comprising a second processing unit and wireless communication means capable of receiving and sending data signals over said medium, are also provided. The remote device is adapted to determine the distance to at least two wearable devices, to determine the direction to said at least two wearable devices based on at least two different bearings taken from said at least one remote device to each wearable device, to calculate the position of said at least two wearable devices relative to the remote device, and to communicate the position of at least one first wearable device to a second wearable device. The wearable devices are adapted to process the position of a first wearable device in their processing unit and to present to the user of a second wearable device an indication of direction and distance to said first wearable device.