Abstract: A new asynchronous localization method for a network of nodes and transmitters, the position of at least one of the nodes and/or transmitters being known, involves receiving a first signal directly from a first transmitter at a first node of a first node pair, receiving the first signal relayed from a second node of the first node pair at the first node, and determining the delay at the first node between the direct and relayed first signal by comparing the direct and relayed first signals. This may be repeated with the first node acting as relay to determine the delay at the second node. Time difference of arrival and/or time of flight between first and second nodes may be determined using the determined delay at the first and/or second node and/or known node locations. The process is repeated for additional transmitters/node pairs until sufficient information is determined for desired applications.

Abstract: The baseband unit includes a first Radio Frequency (RF) coverage unit, a second RF coverage unit, and an interface unit. The first RF coverage unit is configured to communicate with RF devices according to a first communication protocol. The second RF coverage unit is configured to communicate with the RF devices according to a second communication protocol different than the first communication protocol. Further, the interface unit is configured to selectively interface one of the first and second coverage units with the RF devices.

Abstract: The baseband unit includes a first Radio Frequency (RF) coverage unit, a second RF coverage unit, and an interface unit. The first RF coverage unit is configured to communicate with RF devices according to a first communication protocol. The second RF coverage unit is configured to communicate with the RF devices according to a second communication protocol different than the first communication protocol. Further, the interface unit is configured to selectively interface one of the first and second coverage units with the RF devices.

Abstract: A sanitary arm sleeve structure includes an arm sleeve, adapted for receiving the user's arm therewithin, having an outer side, an opposed inner side, and a free edge end, and a sleeve protection layer having an upper edge end attached on the arm sleeve and a lower edge end extended to the free edge end of the arm sleeve so as to overlappedly encircle the sleeve protection layer around the outer side of the arm sleeve. An elastic retaining loop is provided at the inner side of the arm sleeve above the free edge end thereof for applying an elastic binding force around the user's arm above the wrist thereof, so as to retain the arm sleeve in position that the sleeve protection layer is capable of encircling around the user's arm.

Abstract: Passive physiological monitoring apparatus and method has a sensor for sensing physiological phenomenon. A converter converts sensed data into electrical signals and a computer receives and computes the signals and outputs computed data for real-time interactive display. The sensor is a piezoelectric film of polyvinylidene fluoride. A band-pass filter filters out noise and isolates the signals to reflect data from the body. A pre-amplifier amplifies signals. Signals detected include mechanical, thermal and acoustic signatures reflecting cardiac output, cardiac function, internal bleeding, respiratory, pulse, apnea, and temperature. A pad may incorporate the PVDF film and may be fluid-filled. The film converts mechanical energy into analog voltage signals. Analog signals are fed through the band-pass filter and the amplifier. A converter converts the analog signals to digital signals. A Fourier transform routine is used to transform into the frequency domain.

Abstract: A distributed test architecture of transmitting boundary scan Test Access Port (TAP_signals over a serial channel is disclosed. The architecture facilitates the system testing and remote field update of distributed base stations in a wireless network. The distributed test architecture enables system testing as if the distributed units are on a backplane within the same chassis by creating a plurality of logical connections between the distributed unit and the test bus using a single bit fiber line and a five bit TAP test bus.

Abstract: A sanitary arm sleeve structure includes an arm sleeve, adapted for receiving the user's arm therewithin, having an outer side, an opposed inner side, and a free edge end, and a sleeve protection layer having an upper edge end attached on the arm sleeve and a lower edge end extended to the free edge end of the arm sleeve so as to overlappedly encircle the sleeve protection layer around the outer side of the arm sleeve. An elastic retaining loop is provided at the inner side of the arm sleeve above the free edge end thereof for applying an elastic binding force around the user's arm above the wrist thereof, so as to retain the arm sleeve in position that the sleeve protection layer is capable of encircling around the user's arm.