A computer device (100), configured to encode identifiers by providing audio identifiers therefrom, is described. The computer device (100) is configured to provide a set of audio signals as respective bitstreams. Each audio signal of the set of audio signals is defined based, at least in part, on audio signal information including at least one of a type, a fundamental frequency, a time signature and a time. Each audio signal comprises a set of audio segments. Each audio segment of the set of audio segments is defined based, at least in part, on audio segment information including at least one of a frequency, an amplitude, a transform, a time duration and an envelope. The computer device (100) is configured to receive an identifier and select a subset of audio signals from the set of audio signals according to the received identifier based, at least in part, on the audio signal information and/or the audio segment information. The computer device (100) is configured to process the audio selected subset of audio signals by combining the selected subset of audio signals to provide an audio identifier. The computer device (100) is configured to output the audio identifier in an output audio signal as an output bitstream, wherein the audio identifier encodes the identifier. Also described is a method of encoding identifiers by providing audio identifiers therefrom.

A system, method, and apparatus, to distribute and deliver to mobile computing device any multimedia content including non-interrupting, actionable advertisements, promotions and information by using imperceptible to humans sound codes embedded in audio and, alternatively or in tandem, by using visual codes printed on paper or displayed on any electronic screen is provided. The invention enriches the format of traditional broadcasting and digital content delivery through any existing digital and print media channel by augmenting the programming and printed text with unlimited information residing on the Internet. All this added information, including text, video, graphics, and sound is made available to listeners or viewers seamlessly, in real time and contextualized with the programsradio, TV, arena broadcasting, public address system broadcasting, and Internet, either live or pre-recorded.

A propulsion assembly for an unmanned aerial vehicle (UAV) includes a motor configured to rotate in a first direction, a propeller seat configured to be driven by the motor to rotate in the first direction and to receive a propeller, and a sensor configured to collect sensing data useful for determining whether the propeller is locked to the propeller seat, without requiring operation of the motor.

A new acoustic tag and process are disclosed for identifying and tracking underwater hosts in up to three dimensions. The acoustic tag has an operation lifetime up to a year or longer at a pulse rate interval of about 15 seconds. The acoustic tag has a signal detection range up to at least about 500 meters that enhances detection probability.

The disclosure relates to the technology of optical communication, and specifically, to a passive photoelectric tag. The passive photoelectric tag includes: an photocell used to receive an optical signal; a service separation unit used to separate the received optical signal into a DC voltage and an AC signal; a transceiver unit used to perform photoelectric conversion and electric signal processing on an optical signal in the AC signal under power supply of the DC voltage to generate a signal to be transmitted; and an LED emission unit used to transmit the signal to be transmitted in a form of an optical signal. The passive photoelectric tag realizes power provision and signal receiving through a photocell, and power supply is not needed, the cost and the size of the passive photoelectric tag is reduced and the service life of the passive photoelectric tag is prolonged.

A medical cart is provided that allows confirmation that individual medicines have been managed at appropriate temperatures. The medical cart includes: shelves on which medicines can be placed; and a control part which communicates with an RF tag provided for each of the medicines and equipped with a temperature sensor, at appropriate time intervals via an antenna part provided in the vicinity of each of the shelves, and the control part has a memory part which stores ID information of the RF tag and temperature information sensed by a temperature sensor of the RF tag.

A system for locating an asset can include a first visible light communication (VLC) device having a first controller, a first transceiver, and a first light source, where the first transceiver has a first range, where the first controller broadcasts, using the first transceiver, a first communication signal, where the first communication signal comprises an identification of the asset. The system can also include an asset communication device associated with the asset, where the asset communication device includes a second transceiver and a second controller, where the second transceiver has a second range, where the asset communication device is within the first range, where the second controller broadcasts, using the second transceiver, a second communication signal in response to the first communication signal, where the second communication signal comprises the identification of the asset.

A tag selection type optical radio frequency identification (RFID) tag depending on presence or not of visible light includes a photodiode configured to convert a visible light-type signal transmitted from a reader into an electrical signal, a tag integrated circuit (IC) configured to read information on the visible-light type signal using an analog digital converter (ADC) or comparator connected to the photodiode to receive the electrical signal therefrom, configured to be operated using energy obtained by converting a radio frequency (RF) signal received from the reader, to return a value determined to correspond to information to the reader, and configured to transmit stored data according to a command obtained by demodulating the electrical signal of the photodiode to the reader, and an antenna configured to facilitate reception of the RF signal by the tag IC or to facilitate transmission of the value and the data from the tag IC.

An atomization system and an atomization method are provided. The atomization system having an authentication mechanism includes an atomized drug container, a user device, and an atomizing device. The user device includes a communication module, an optical authentication module and a first acoustic wave communication module. The optical authentication module is configured to perform a first optical authentication operation associated with an authentication code carrier to obtain first optical authentication information, and the communication module is configured to request a cloud server to perform an authentication operation for the first optical authentication information to determine the authenticity of the atomized drug container.

A method includes determining a first unique identifier corresponding to an information handling system. The method further includes providing the first unique identifier to an asset management tag device affixed to the information handling system, the asset management tag device is communicatively coupled to an asset management system.