Abstract: A method for determining a location of a device in a wireless network includes transmitting a digital transmit signal from a digital transmitter including a first antenna. The first antenna is configured to transmit the digital transmit signal to two or more receivers. A first receiver including a second antenna and a second receiver including a third antenna receive the digital transmit signal from the digital transmitter. The digital transmit signal arrives at the receivers at two different time instances as a first digital signal and a second digital signal. A comparison of the digital signals is performed at the processor. A time difference of arrival of the digital signals is determined at the processor based on the performed comparison. The direction of travel of the digital transmit signal is estimated at the processor. A bearing to the digital transmitter is determined.

Abstract: An Automatic Supplemental Oxygen Control unit, a portable device that automatically monitors and adjusts the flow of supplemental oxygen to the subject in response to the oximetry and other readings derived from sensors attached to the subject and the oxygen source and provides programmed responses to physical inputs from such sensors to provide a closed loop oxygen delivery system.

Abstract: A method for determining a location of a device in a wireless network includes transmitting a digital transmit signal from a digital transmitter including a first antenna. The first antenna is configured to transmit the digital transmit signal to two or more receivers. A first receiver including a second antenna and a second receiver including a third antenna receive the digital transmit signal from the digital transmitter. The digital transmit signal arrives at the receivers at two different time instances as a first digital signal and a second digital signal. A comparison of the digital signals is performed at the processor. A time difference of arrival of the digital signals is determined at the processor based on the performed comparison. The direction of travel of the digital transmit signal is estimated at the processor. A bearing to the digital transmitter is determined.

Abstract: A hand held test instrument for testing a DSL line is provided. The test instrument includes an interface for unintrusive connection with the DSL under test. The interface is configured to capture Radio Frequency (RF) signals corresponding to a portion of a data stream transmitted by a communication device over the DSL under test. The hand held test instrument further includes a controller module configured to identify unique characteristics of the communication device based on the captured RF signals.

Abstract: A phone test set provides modem capability in a hand held device, enabling bi-directional data communications. Demodulation is provided by sampling digitized incoming phone line signals at 4 times carrier frequency, and employing values representing 0 and 90 degree samples to extract the information signal.

Abstract: A phone test set provides modem capability in a hand held device, enabling bi-directional data communications. Demodulation is provided by sampling digitized incoming phone line signals at 4 times carrier frequency, and employing values representing 0 and 90 degree samples to extract the information signal.

Abstract: A phone test set provides TDR capability in a hand held device, enabling measurements on phone lines including, distance to opens, distance to shorts, and distance to bridge taps.

Abstract: A phone test set provides modem capability in a hand held device, enabling bi-directional data communications. Demodulation is provided by sampling digitized incoming phone line signals at 4 times carrier frequency, and employing values representing 0 and 90 degree samples to extract the information signal.

Abstract: A phone test set provides modem capability in a hand held device, enabling bi-directional data communications. Demodulation is provided by sampling digitized incoming phone line signals at 4 times carrier frequency, and employing values representing 0 and 90 degree samples to extract the information signal.

Abstract: A network test instrument employs at least 2 PN sequences that are applied to a network for testing. The instrument further characterizes very short cables, impedance measurement.

Abstract: Methods of controlling the power level of a pulsed laser beam being used to scan barcodes and the like in order to increase the depth-of-field. The pulses may comprise a plurality of pulses above and below a maximum legal power level so that, on average, the power output is below the legal limit. The sensor may be monitored for no-signal and over-signal conditions and the power of the laser beam adjusted accordingly.

Abstract: Disclosed is apparatus for scanning a field of view for two-dimensional data and for rapidly processing the data. There is a video device viewing the field of view and producing a two-dimensional matrix of pixel data as an output representing a plurality of pixel positions of the field of view. A digital memory receives and holds the two-dimensional matrix of pixel data output from the video device in a plurality of multiple pixel data words. There is also a digital processor including a register for receiving pixel data and logic for processing data to decode it. Primarily, there is pixelizer logic and associated circuitry connected between the digital memory and the digital processor for removing data associated with a specified pixel position within the field of view from an associated one of the plurality of multiple pixel data words in the digital memory and for placing the data into a pre-established bit position within the register of the digital processor.

Abstract: A protocol analyzer pod for monitoring U-interface data streams in a communication system wherein full duplex U-interface line codes (such as AMI and 2B1Q) are used. The protocol analyzer pod is intrusively inserted (that is, inserted in series) in a U-interface line between a central office and a customer equipment. The protocol analyzer pod includes two cross-connected U-interface transceivers. According to the present invention, each end of the U-interface line is terminated into one of the U-interface transceivers. The two U-interface transceivers perform adaptive equalization and echo cancelling on their respective line segments. Also, the two U-interface transceivers separate the full duplex U-interface data stream on the U-interface line into separate input and output data streams. A protocol analyzer may monitor the full duplex U-interface data stream by monitoring the half duplex input and output data streams.