Abstract: An RF device may include RF circuitry having a PIN diode configured to switch an RF signal, and a biasing circuit. The biasing circuit may include a controllable power supply having a control input and an current output coupled to the PIN diode to selectively bias the PIN diode into an ON state, and a feedback circuit coupled between the current output and the control input of the controllable power supply to set a current delivered to the PIN diode in the ON state.

Abstract: According to the present invention, programs that use signals, such as multi-media signals, received over communication channels from one or more sources are produced in a computing system by executing an application software in one or more servers of the computing system. At least one of the servers has one or more processors that process defined logical entities. A signal used in production of a program is received from a source over a communication channel at a server. An input logical entity having attributes associated with the source of the signal is defined such that the input logical entity is responsive to a user defined predicate comprising a logical expression for accepting or rejecting the signal. Also defined are a stream logical entity that identifies an accepted signal and a routing logical entity that establishes a connection between the stream logical entity and a destination. The accepted signal is routed to the destination based on a routing rule.

Abstract: Systems (100) and methods (1000) for operating a shoulder Speaker Microphone (“SM”) device coupled to a radio. The methods comprising: using a speaker and a microphone of the shoulder SM device to facilitate auditory communications to and from a user of the radio; activating a thermal imaging device integrated with the shoulder SM device when the shoulder SM device resides at a location of an incident event; capturing thermal images by the thermal imaging device of the shoulder SM device; and performing operations by the shoulder SM device to cause the thermal images to be streamed over a network.

Abstract: A radio frequency (RF) communications system may include an RF transmitter having multicarrier transmitter circuitry that transmits frequency bands over a frequency range. A controller may selectively transmit real information over at least one of the frequency bands and selectively transmits fake information within the frequency range. The controller's operation is based on embedded machine learning model and real-time effectiveness feedback from built-in spectral analyzer. An RF receiver receives the real information from the RF transmitter.

Abstract: An example method comprises receiving, at a first digital device, video data, scanning video content of the video data for visual transitions within the video content between consecutive frames of the video data, each transition indicating significant visual transitions relative to other frames of the video data, timestamping each visual transition and create a first set of temporal video fingerprints, identifying items of metadata to be associated with the video data, identifying a location within the video data using the temporal video fingerprints for the identified items of metadata, generating a metadata index identifying each item of metadata and a location for each item of metadata relative to the video data using at least one of the temporal video fingerprints, and transmitting, at the first digital device, the video data, the first set of temporal video fingerprints, and the metadata index to a different digital device.

Abstract: Antenna system includes a base structure and a multiplicity of vertebrae arranged in a stack to define a spine. The spine has an elongated length which extends from a base end to a tip end. A compression applicator is configured to apply an elastic compression force on the stack in a direction along the elongated length from the tip end to the base end. Vertebra interfaces associated with each of the adjacent pairs of the vertebrae are configured to facilitate a variable deviation in an angular alignment of a vertebra axis of each vertebra relative to an adjacent one of the vertebra contained in the stack.

Abstract: An example method comprises receiving, at a first digital device, video data, scanning video content of the video data for visual transitions within the video content between consecutive frames of the video data, each transition indicating significant visual transitions relative to other frames of the video data, timestamping each visual transition and create a first set of temporal video fingerprints, identifying items of metadata to be associated with the video data, identifying a location within the video data using the temporal video fingerprints for the identified items of metadata, generating a metadata index identifying each item of metadata and a location for each item of metadata relative to the video data using at least one of the temporal video fingerprints, and transmitting, at the first digital device, the video data, the first set of temporal video fingerprints, and the metadata index to a different digital device.

Abstract: A cross-domain information transfer system includes a key distribution center that generates private encryption keys and a signature key pair as a secret signing and secret verifying key for an attribute associated with a given domain. A sender device generates ciphertext from plaintext based upon the private encryption key, appends an attribute for a given domain to the ciphertext, generates ciphertext with a concealed attribute based upon the secret signing key and broadcasts the ciphertext with the concealed attribute. Domain gateway devices each receive a respective secret verifying key for an associated attribute, receive the ciphertext with the concealed attribute from the untrusted network, and use the secret verifying key to determine if the concealed attribute matches the attribute associated with the domain gateway device, and, when so, pass the ciphertext to at least one receiver device coupled with the domain gateway device.

Abstract: A communications system may include a transmitter having spreading stages configured to spread a common modulated baseband input data stream based upon respective coefficient sequences; a plurality of upconverters, each having a different frequency; and an RF output stage that generates an RF output signal. A receiver may include an RF input stage that receives an RF input signal, a plurality of downconverters, a plurality of despreading stages, and a demodulator coupled to the despreading stages.

Abstract: Antenna system includes a base structure and a multiplicity of vertebrae arranged in a stack to define a spine. The spine has an elongated length which extends from a base end to a tip end. A compression applicator is configured to apply an elastic compression force on the stack in a direction along the elongated length from the tip end to the base end. Vertebra interfaces associated with each of the adjacent pairs of the vertebrae are configured to facilitate a variable deviation in an angular alignment of a vertebra axis of each vertebra relative to an adjacent one of the vertebra contained in the stack.

Abstract: Systems and methods for operating a communication device. The methods comprise: concealing the communication device and/or at least one cable in a ballistic wearable item (e.g., a ballistic vest) such that the communication device resides in a storage slot for a trauma plate, where the communication device comprises a frame having a cross-sectional profile that matches a cross-sectional profile of the trauma plate by a given amount (e.g., 75-100%); and performing communication operations by a radio module integrated with the frame of the communication device.

Abstract: A communication system may include a radio frequency (RF) detector and an RF transmitter having a selectable hopping rate and a selectable hopping frequency window. A controller may be configured to operate the RF transmitter at a selected hopping rate and at a selected hopping frequency window based upon the RF detector.

Abstract: An example method comprises receiving, at a first digital device, video data, scanning video content of the video data for visual transitions within the video content between consecutive frames of the video data, each transition indicating significant visual transitions relative to other frames of the video data, timestamping each visual transition and create a first set of temporal video fingerprints, identifying items of metadata to be associated with the video data, identifying a location within the video data using the temporal video fingerprints for the identified items of metadata, generating a metadata index identifying each item of metadata and a location for each item of metadata relative to the video data using at least one of the temporal video fingerprints, and transmitting, at the first digital device, the video data, the first set of temporal video fingerprints, and the metadata index to a different digital device

Abstract: Systems (100) and methods (500) for controlling operations of an electronic device. The methods comprise: using a rotary knob having a single rotatable part to select a first circuit to perform operations of the electronic device during a first time and to select a second circuit to perform operations of the electronic device during a second time; and using the single rotatable part of the rotary knob to additionally change preset functions for the first circuit at the first time and a second circuit at the second time, where a degree of rotation of the single rotatable part corresponds to a desired preset function input selected from a plurality of possible preset function inputs.

Abstract: A radio frequency (RF) communication device includes an RF spectral sensor that senses a dynamically changing RF spectral environment, and RF circuitry having at least one settable parameter. A controller dynamically sets the at least one settable parameter thereby affecting power consumption and RF communication performance by using an artificial intelligence (AI) model based upon the power consumption and the RF communication performance in the dynamically changing RE spectral environment.

Abstract: Systems and methods for operating a communication device. The methods comprise: monitoring, by the processor, states of snap-dome based switches of a keypad provided with the communication device; activating, by the processor, a first timer when the snap-dome based switches are simultaneously activated; detecting, by the processor, when maintenance of the communication device is needed based on a value of the first timer; and causing, by the processor, performance of communication device maintenance based on the detecting, for immersion time and immersion depth fatigue.

Abstract: A method for compressing a short message includes receiving a short message that includes a plurality of text strings for compression, dividing the short message into one or more sub-blocks, where a number of text strings in each of the one or more sub-blocks is less than or equal to a predetermined number. The method also includes compressing each of the one or more sub-blocks by identifying a type of a first text string, identifying a code representing the type, determining whether the first text string exists in a library, upon determining that the first text string exists in the library, determining an index corresponding to the first text string, extracting a predetermined number of least significant digits of the index, and replacing the first text string in that sub-block with the code and the extracted predetermined number of least significant digits of the index.

Abstract: Broadband HF antenna system includes a conductive radiating element in the form of a continuous conductive loop. The conductive loop includes first and second elongated conductor portions. The conductive loop is electrically connected at first and second loop ends to an impedance matching network disposed within a chassis. The first elongated conductor portion is comprised of a whip antenna which functions as a cantilevered spring attached at one end to the rigid chassis. The whip antenna is resiliently maintained in a curved state by a tension force applied by the second elongated conductor portion. A spacing or gap between the first and second elongated conductor portions to establish the loop configuration is maintained exclusive of any spacer or hanger element.

Abstract: Systems and methods for operating a network. The methods comprise: determining, by a first network node, a capacity of each communications link of a plurality of communications links on which the first network node is able to receive data from second network nodes; determining, by the first network node, a total number of network nodes that share the capacity of each said communications link of the plurality of communications links; computing, by the first network node, first data transmission rates for the plurality of communications links using the capacities and the total numbers of network nodes, respectively; comparing, by the first network node, the first data transmission rates to each other to determine which data transmission rate has a lowest value; and/or performing communication operations by the first network node in accordance with the data transmission rate determined to have the lowest value of the first data transmission rates.

Abstract: Limiting frequency overshoot in a timing recovery loop involves using a proportional-integral (PI) control system to discipline a frequency of an output signal of a voltage controlled oscillator (VCO) in accordance with a time reference signal. A control signal output of the PI control system is monitored to detect conditions which will prospectively cause an excess deviation of the VCO frequency. In response to detecting such a condition, an output of an integral error term generator of the PI control system is locked or held constant. This will have the effect of preventing the excess frequency deviation of the VCO.