Ultrasonic audio processing circuitry and a method useful in ultrasonic presence detection. An ultrasonic burst generator produces an ultrasonic burst signal at one or more ultrasonic frequencies, and an equalizer equalizes that ultrasonic burst signal according to frequency response characteristics of the speaker and microphone at those ultrasonic frequencies. Driver circuitry drives a speaker with the ultrasonic burst signal, which may be combined with an audible audio signal. An ultrasonic separation filter separates an ultrasonic portion from a signal received at a microphone, and processing circuitry is provided to determine a delay time of an echo corresponding to the ultrasonic burst signal in that separated ultrasonic portion of the received signal. In another aspect, the equalizer equalizes an ultrasonic portion of the signal received at a microphone, according to frequency response characteristics of the speaker and microphone at the ultrasonic frequencies of the burst.

A seabed object detection system is provided. The system can include a receiver array including streamers. The system can include a plurality of receivers coupled with the streamers. The system can include a receiver array cross-cable to couple with the first streamer and to couple with the second streamer. The receiver array cross-cable can be disposed at a first depth of a body of water. The system can include a first diverter and a second diverter coupled with the receiver array cross-cable. The system can include a source array including a first source and a second source. The source array can be coplanar to the receiver array. The system can include a source array cross-cable to couple with the first source and to couple with the second source, the source array cross-cable disposed at a second depth of the body of water.

A seabed object detection system is provided. The system can include a receiver array including streamers. The system can include a plurality of receivers coupled with the streamers. The system can include a receiver array cross-cable to couple with the first streamer and to couple with the second streamer. The receiver array cross-cable can be disposed at a first depth of a body of water. The system can include a first diverter and a second diverter coupled with the receiver array cross-cable. The system can include a source array including a first source and a second source. The source array can be coplanar to the receiver array. The system can include a source array cross-cable to couple with the first source and to couple with the second source, the source array cross-cable disposed at a second depth of the body of water.

Present teachings relate to a method for proximity detection on an electronic device, the method comprising the steps of: performing a first measurement using a first sensor; calculating, using a processing unit, a first distance value from the first measurement; the first distance value being indicative of the distance between a user and the electronic device; in response to the first distance value, through the processing unit, adapting an energy level on the electronic device, said energy level being related to the Specific Absorption Rate (“SAR”), such that predefined SAR requirements due to exposure of emitted energy from the electronic device are met. The present teaching further relate to an electronic device comprising a measurement system configured to control an energy level on the electronic device, said energy level being related to the Specific Absorption Rate (“SAR”). The present teachings also relate to a computer software product for implementing any method steps disclosed herein.

An adjustment assembly for use in a vehicle, including an adjustable part configured to move between an open position and a closed with respect to a vehicle body. The adjustable part may include an outer side and an inner side. At least a portion of the adjustable part may define an opening extending between the outer side and the inner side. The adjustment assembly may include an ultrasonic transmitter, disposed on either the adjustable part or the vehicle body and may be configured to emit a number of ultrasonic waves to an obstacle, and an ultrasonic receiver disposed on the inner side of the adjustable part and configured to receive the ultrasonic waves reflected from the obstacle through the opening.

An adjustment assembly for use in a vehicle, including an adjustable part configured to move between an open position and a closed with respect to a vehicle body. The adjustable part may include an outer side and an inner side. At least a portion of the adjustable part may define an opening extending between the outer side and the inner side. The adjustment assembly may include an ultrasonic transmitter, disposed on either the adjustable part or the vehicle body and may be configured to emit a number of ultrasonic waves to an obstacle, and an ultrasonic receiver disposed on the inner side of the adjustable part and configured to receive the ultrasonic waves reflected from the obstacle through the opening.

The present disclosure relates to an apparatus and method for monitoring a space using a three-dimensional acoustic web, and to a method of emitting a plurality of acoustic signals, forming a three-dimensional acoustic web in a monitoring target space based on interference between acoustic waves, and recognizing a situation of the monitoring target space based on a change in measured acoustic signals.

An automatic truck unloading apparatus and method are provided. The automatic truck unloading apparatus generates sensing information regarding the presence or absence of a pallet on the truck by implementing sensors installed in a region of a truck and a region of a storage area, and sets optimal transport paths for multiple unmanned forklift vehicles based on the sensing information, and unloads a pallet from the truck and moves and stores the pallet in the storage area by implementing an unmanned forklift vehicle.

An automatic truck unloading apparatus and method are provided. The automatic truck unloading apparatus generates sensing information regarding the presence or absence of a pallet on the truck by implementing sensors installed in a region of a truck and a region of a storage area, and sets optimal transport paths for multiple unmanned forklift vehicles based on the sensing information, and unloads a pallet from the truck and moves and stores the pallet in the storage area by implementing an unmanned forklift vehicle.

A system and method is disclosed for classifying one or more objects within a vicinity of a vehicle. Ultra-sonic data may be received from a plurality of ultra-sonic sensors and may comprise echo signals indicating one or more objects that are proximally located within a vicinity of a vehicle. One or more features may be calculated from the ultra-sonic data using one or more signal processing algorithms unique to each of the plurality of ultra-sonic sensors. The one more features may be combined using a second-level signal processing algorithm to determine geometric relations for the one or more objects. The one or more features may then be statistically aggregated at an object level. The one or more objects may then be classified using a machine learning algorithm that compares an input of each of the one or more features to a trained classifier.