M & Fc Holding, LLC

Axonn, L.l.c.

Sensus Spectrum, LLC

Sanconix Inc.

Gary A Naden

Robert E Rouquette

H Britton Sanderford, Jr

H Britton Sanderford

Michael Ray Brown

Marc L Reed

Gordon J Boudreaux

Ronnie Daryl Tanner

Scott Quillin

Dale E Reiser

Stephen Schamber

Charles A Hwang

Marc L Read

Ronnie Tanner

Gordon J Boudeaux

A phase-locked loop frequency synthesizer includes an L-state pulse width modulator configured to receive a reference frequency signal and at least one entry from a frequency table, and to output at least one N/N+1 modulus signals corresponding to the at least one entry from the frequency table. The synthesizer includes a divide by N/N+1 controllable modulus divider configured to receive the at least one N/N+1 modulus signals and to divide the output frequency signal by the at least one N/N+1 modulus signals to generate a second reference frequency signal. The synthesizer includes a phase frequency detector configured to receive the reference frequency signal and the second reference frequency signal and to generate an error signal. The synthesizer also includes a filter network configured to receive the error signal and to output a voltage; and a voltage controlled oscillator configured to receive the voltage and to generate the output frequency signal.

Geographic locating remote endpoint monitor device, system, and methodology thereof

A cellular network includes a node configured to transmit a data packet on a predetermined frequency, first and second base stations configured to receive signals transmitted on the predetermined frequency, and a data concentrator. The first base station and the second base station are arranged in a cellular configuration such that a first coverage area of the first base station at least partially overlaps a second coverage area of the second base station. The first base station and the second base station each receive the data packet transmitted by the node. The data concentrator is configured to collect the data packet received by the first base station and the data packet received by the second base station. The data packet includes latitude and longitude data received from a global positioning system receiver such that a location of the node may be determined from a remote location.

A remote endpoint monitor device includes a remote endpoint device including a meter, a position locator, a frequency selector, and a communication unit. The meter is configured to measure a service parameter to provide a measured service parameter value. The position locator is configured to determine a position of the remote endpoint device. The frequency selector is configured to select a transmission frequency device based on the determined position. The transmitter is configured to transmit service information data including the service parameter value at the transmission frequency selected by the frequency selector. A method of a remote endpoint monitor device includes measuring a service parameter, determining a position of the remote endpoint device, selecting a transmission frequency of the remote end point device, and transmitting service information data at the transmission frequency. Thus, the remote endpoint monitor device is capable of handling an automatic frequency switchover without direction provided externally.

A mobile multifrequency transmitter includes a self-locator, a frequency selector, and a communication unit. The self-locator is configured to determine a current self location without transmitting an outgoing signal, and to provide the self location to the multifrequency transmitter. The frequency selector is configured to select a usable frequency based on the current self location. The communication unit is configured to transmit on said selected usable frequency. A mobile communication method includes the steps of obtaining a current self location from a self-locator without transmitting an outgoing signal, looking up in a database an allowable frequency band corresponding to the current self location, and transmitting on the allowable frequency band. Thus, the mobile multi-frequency transmitter is capable of handling an automatic frequency switchover without the need for higher level cellular direction.

Mobile multifrequency transmitter transmitting on frequencies based on geographic locations and a method thereof

A cellular wireless packet data communication system containing transmit-only endpoint devices which transmit to receive-only base stations. The system is configured to allow for large area coverage (e.g., a metropolitan area) with far fewer number base stations than are required with conventional two-way cellular systems. The base station coverage areas are configured to overlap, allowing for reception of packets at multiple base stations. A data concentrator resolves redundantly received messages. The network is configurable as a WAN, a LAN, or a combination of the two. Novel modulation techniques (e.g., a 16QAM submodulation together with a 7FSK modulation) are used such that low cost components can be used in the transmitters and receivers while achieving outstanding probability of success performance. The endpoint devices are battery operated and accordingly, are designed for low power consumption and multi-year battery life. The system is used in a variety of applications including remote monitoring and mobile communications.

Enhanced wireless packet data communication system, method, and apparatus applicable to both wide area networks and local area networks

A device, method, and computer program product for monitoring and transmitting a location and a local status of a remote device using a simplex satellite transmitter. The monitoring device includes a position location unit, a simplex satellite transmitter, a power source, and a controller. The position location unit is configured to determine a location of the remote device. The simplex satellite transmitter is configured to transmit the location to one or more satellites in low earth orbit. The controller includes a power management unit configured to control a power state of the position location unit and the simplex satellite transmitter, and to periodically enable and disable power from the power source to the position location unit and the simplex satellite transmitter.

Location monitoring and transmitting device, method, and computer program product using a simplex satellite transmitter

A method, apparatus, computer-based product and system employs a digital receiver (or transceiver) to receive, digitize and process a direct sequence spread spectrum signal using efficient, low-cost digital signal processing components. A radio front end portion of the receiver receives and digitizes the signal, and a digital signal processing portion downconverts and despreads the signal by applying a pseudorandom noise (PN) code, used at a transmitter to spread a data signal contained in the direct sequence spread spectrum signal, to the received signal. In order to initially align, and maintain alignment of, the PN code with the direct sequence spread spectrum signal, a timing and state control mechanism is included that provides time reference correction information to the signal processing components of the receiver. This time reference correction information allows the receiver to be compatible with transmitters using inaccurate frequency references which impart a significant frequency ambiguity in the received signal. Additional features include computer-based synchronization methods and mechanisms suitable for use for low performance digital signal processors and employ power management mechanisms that enable long-term operation using battery power. The power management mechanisms enable the receiver to operate in a network setting, over the course of multiple years off battery power, with similar receivers, transmitters and transceiver that communicate with one another using direct sequence spread spectrum signals.

Direct sequence spread spectrum method computer-based product apparatus and system tolerant to frequency reference offset

Direct sequence spread spectrum method, computer-based product,

A direct sequence spread spectrum (DSSS) DSP implementation technique utilizing a unique combination of multiple filters, transforms, despreading algorithm and spectral compression, all in a single coefficient set, providing a highly efficient system requiring relatively nominal computational hardware and software requirements. Reallocatable computational resources allow for frequency uncertainty in the transmitter, without the typical excessive noise bandwidth penalties. The present system further contemplates a unique energy detection algorithm for discerning spread spectrum while in the search mode, utilizing several discrete sampling data sets to increase signal strength, reducing noise, while changing the relative phase of the received chipping code with respect to the received signal. The spectral compression of the spreading sequence is achieved by representing the PRC as an array of two, complimenting fractional coefficients. The PRC code is filtered to achieve the required spectral compression characteristics, resulting in minimal despreading loss, while providing interference rejection of CW signals greater than 1.5 MHz from the center IF frequency.

Growing community of inventors

Mandeville, LA, United States of America

Gary A Naden