Abstract: Systems and methods for determining positioning of a scanner moving along a section of a pipe, may include: an encoder and a counter measuring distance traveled by the scanner along a plurality of scan lines along a length of the section of the pipe; measuring acceleration and angular velocity of the scanner around a portion of the circumference of the pipe between successive scan lines; computing an angle of rotation of the scanner around the portion of the circumference of the pipe between successive scan lines, and determining a distance traveled around the portion of the circumference of the pipe between first and second scan lines using the computed angle of rotation. The process may further include determining a position of the device using the distance traveled measurements from the counter and the fusion circuit.

Abstract: Systems and methods for multi-sensor data fusion include: a counter circuit, measuring a clock rate of a local clock and outputting a difference value associated with the local clock and a counter value; a data collection and counterstamp circuit comprising a plurality of inputs to receive data from a plurality of sensors and a plurality of outputs, wherein the sensors are not synchronized with the multi-sensor data fusion system, and wherein the data collection and counterstamp circuit determines a sample delay for received sensor data and determines a timestamp corresponding to the measurement time for received sensor data using the determined sample delay; and a data fusion circuit comprising a plurality of inputs to receive sensor data from the data collection and counter stamp circuit, the data fusion circuit outputting information with even output timing, synchronized with an application processor.

Abstract: An improved sliding discrete Fourier transform (SDFT) algorithm called CIC-SDFT and its apparatus are provided. An input signal is multiplied by a modulated twiddle factor, and is then processed by a modified cascade integrator-comb (CIC) filter. The CIC-SDFT comprises an integrator section and a comb section, with a downsampler disposed between the two sections to enable downsampling of the SDFT computations. Through addition of more integrator stages and comb stages to the CIC-SDFT, the accuracy of spectrum estimation may be improved in a computationally inexpensive manner and with less complexity than applying windowing functions to known SDFTs. Various embodiments provide a partially-nonrecursive method of CIC-SDFT that further decreases computational complexity.

Abstract: Systems and methods are provided in which a wireless receiver can be configured to digitally synchronize a receive sampling rate to a transmit sampling rate, and may include a digital interpolator controlled by a timing control unit with a timing offset estimator. The timing control unit can be configured to calculate and output parameters to the digital interpolator. The digital interpolator can include a sample buffer followed by a fractional delay filter. Output parameters to the digital interpolator can include a fractional delay timing offset signal of the receiver relative to a transmitter timing signal and a buffer pointer control signal to control a position of the read pointer relative to a write pointer to compensate for subsample timing offset. The timing offset estimator can be configured to calculate and provide to the timing control unit a sampling period ratio control word and an instantaneous timing offset control word.

Abstract: An improved sliding discrete Fourier transform (SDFT) algorithm called CIC-SDFT and its apparatus are provided. An input signal is multiplied by a modulated twiddle factor, and is then processed by a modified cascade integrator-comb (CIC) filter. The CIC-SDFT comprises an integrator section and a comb section, with a downsampler disposed between the two sections to enable downsampling of the SDFT computations. Through addition of more integrator stages and comb stages to the CIC-SDFT, the accuracy of spectrum estimation may be improved in a computationally inexpensive manner and with less complexity than applying windowing functions to known SDFTs. Various embodiments provide a partially-nonrecursive method of CIC-SDFT that further decreases computational complexity.

Abstract: Systems and methods are provided in which a wireless receiver can be configured to digitally synchronize a receive sampling rate to a transmit sampling rate, and may include a digital interpolator controlled by a timing control unit with a timing offset estimator. The timing control unit can be configured to calculate and output parameters to the digital interpolator. The digital interpolator can include a sample buffer followed by a fractional delay filter. Output parameters to the digital interpolator can include a fractional delay timing offset signal of the receiver relative to a transmitter timing signal and a buffer pointer control signal to control a position of the read pointer relative to a write pointer to compensate for subsample timing offset. The timing offset estimator can be configured to calculate and provide to the timing control unit a sampling period ratio control word and an instantaneous timing offset control word.

Abstract: A time division multiple access (TDMA) media access control (MAC) protocol is provided for wireless body area networks (BANs). In particular, in some embodiments the described network devices utilize signaling to modify previously made reservations. In other embodiments, reservation adjustment is performed without using signaling. Preemption can also be used to allow flexible reservation adjustment.

Abstract: A time division multiple access (TDMA) media access control (MAC) protocol is provided for wireless body area networks (BANs). In particular, in some embodiments the described network devices utilize a reservation-based power saving polling (RESP) MAC protocol for communication. The RESP MAC can be configured to provide methods for emergency event handling of both bursty data and streaming data.

Abstract: A time division multiple access (TDMA) media access control (MAC) protocol is provided for wireless body area networks (BANs). In particular, in some embodiments the described network devices utilize a reservation-based power saving polling (RESP) MAC protocol for communication. The RESP MAC can be configured to provide methods for emergency event handling of both bursty data and streaming data.

Abstract: A time division multiple access (TDMA) media access control (MAC) protocol is provided for wireless body area networks (BANs). In particular, in some embodiments the described network devices utilize signaling to modify previously made reservations. In other embodiments, reservation adjustment is performed without using signaling. Preemption can also be used to allow flexible reservation adjustment.

Abstract: A time division multiple access (TDMA) media access control (MAC) protocol is provided for wireless body area networks (BANs). In particular, in some embodiments the described network devices utilize a reservation-based power saving polling (RESP) MAC protocol for communication. The RESP MAC can be configured to provide methods for emergency event handling of both bursty data and streaming data.

Abstract: A time division multiple access (TDMA) media access control (MAC) protocol is provided for wireless body area networks (BANs). In particular, in some embodiments the described network devices utilize a reservation-based power saving polling (RESP) MAC protocol for communication. The RESP MAC can be configured to provide methods for emergency event handling of both bursty data and streaming data.

Abstract: A time division multiple access (TDMA) media access control (MAC) protocol is provided for wireless body area networks (BANs). In particular, in some embodiments the described network devices utilize a reservation-based power saving polling (RESP) MAC protocol for communication. The RESP MAC can be configured to provide methods for emergency event handling of both bursty data and streaming data.

Abstract: A digital camera with navigation features comprises optical elements configured to focus an image onto a focal plane, an image capture medium positioned at the focal plane configured to capture the image focused onto the focal plane, image control logic configured to process images captured by the image capture medium, navigation control logic configured to perform navigation functions and to determine navigational information, and a display screen communicatively coupled to the image control logic and the navigation control logic and configured to display at least one of an image captured by, the image capture medium and a map for navigation purposes. The digital camera can further comprise a docking station configured to be communicatively coupled to the digital camera and having an information storage device for storage of images, navigation information and other data.

Abstract: A content capture device with watermarking features provides the ability to encode a captured content item with identification information to identify an owner or other interested party. The content capture device can be implemented as a digital camera or other device suitable for capturing digital content, whether it be audio, visual or other content. The identification information. can be obtained using various techniques such as user entry, downloading or through the use of a biometric sensor.

Abstract: A digital camera with navigation features comprises optical elements configured to focus an image onto a focal plane, an image capture medium positioned at the focal plane configured to capture the image focused onto the focal plane, image control logic configured to process images captured by the image capture medium, navigation control logic configured to perform navigation functions and to determine navigational information, and a display screen communicatively coupled to the image control logic and the navigation control logic and configured to display at least one of an image captured by, the image capture medium and a map for navigation purposes. The digital camera can further comprise a docking station configured to be communicatively coupled to the digital camera and having an information storage device for storage of images, navigation information and other data.