Abstract: A wireless communication device has a docking cavity, a short-range transceiver, and a long-range transceiver for long-range wireless communication with a wireless network. A wireless communication module includes a speaker and a microphone, and a short-range transceiver for short-range wireless communication with the device's short-range transceiver. The module is configured to operate in first and second modes. In the first mode, the module is separated from the communication device. In the second mode, the module is mounted in the cavity. In both modes, communication between a user and the network is conducted through the module's microphone and speaker, both short-range transceivers and the long-range transceiver.

Abstract: A scheme for redirecting data to a mobile communication device capable of communicating via at least one short-range wireless communication path and at least one long-range wireless communication path. An embodiment comprises one or more of the following: receiving data at a host system; determining whether the mobile communication device is within coverage of a cell of a plurality of cells, each cell being operable with an associated short-range wireless communication path; if the mobile communication device is within coverage of a cell, then redirecting the received data from the host system to the mobile communication device via the short-range wireless communication path associated therewith; and if the mobile communication device is not within coverage of any cells, then redirecting the received data from the host system to the mobile communication device via a long-range wireless communication path effectuated over a wide area cellular network.

Abstract: A scheme for redirecting data to a mobile communication device capable of communicating via at least one short-range wireless communication path and at least one long-range wireless communication path. An embodiment comprises one or more of the following: a structure for setting a redirection flag configured for a user associated with a mobile communication device to enable continuous redirection of data items thereto from a host system until the redirection flag is reset to indicate cessation of redirection of the data items. Thereafter, the embodiment is operable to determine whether the mobile communication device is within coverage of a cell of a plurality of cells, each cell being operable with an associated short-range wireless communication path, whereby a data item is redirected accordingly.

Abstract: An IDT produces a SAW when excited by a single electrical pulse and can be fabricated to embody a code, which code provides for a passive autocorrelation of a SAW input to the IDT and thereby lends itself to further application as a signal generator in a communication device. However, internal dimensions of IDTs are inversely proportional to operating frequency, such that high frequency IDTs present significant manufacturing difficulties. Fabrication of IDTs for high frequency applications is simplified by exploiting a harmonic frequency SAW generated by IDTs. An IDT may therefore be designed according to fundamental frequency internal dimension criteria but can operate at a multiple of the fundamental frequency, thereby providing much higher frequency operation than conventional SAW systems. Operation of a second harmonic SAW system at 2.4 GHz based on a fundamental frequency of 1.2 GHz is contemplated.

Abstract: An electrical sub-circuit assembly is secured to a printed circuit board by providing a printed circuit board with a basin, the printed circuit board having electrical pathways leading to the top or side or on the bottom of said basin, and positioning an electrical sub-circuit assembly in the basin, the sub-circuit assembly having dimensions corresponding to the size of the basin so as to be a close fit therein and having electrical connections which locate adjacent corresponding electrical pathways on the printed circuit board. The sub-circuit assembly is secured in the basin, and the electrical connections on the sub-circuit assembly are connected to the corresponding pathways on the printed circuit board.

Abstract: A method of sensing the concentration level of at least one particular electrolyte in the sweat fluid of a subject, includes providing a sweat sensor system having sweat fluid absorbing material, measuring apparatus for sensing the electrical conductivity of sweat fluid absorbed by the absorbing material and producing ionic concentration data for said at least one particular electrolyte, and a user interface connected to the measurement apparatus for interpreting the data to a user. The absorbing material is applied to the skin of the subject to cause sweat fluid thereon to be absorbed by the absorbing material whereby the measurement apparatus produces ionic concentration data for the sweat fluid absorbed and the user interface interprets the data for a user.

Abstract: A biosensor detection system for detecting a particular substance has at least two biosensor devices. Each biosensor device includes a piezoelectric material, an input transducer mounted on the piezoelectric material to receive an input radio frequency signal and propagate a corresponding acoustic wave within the piezoelectric material and an output transducer mounted on the piezoelectric material to receive the acoustic wave and transmit a corresponding output radio frequency signal. A biolayer is mounted on the piezoelectric material to receive a substance to be tested and cause a corresponding change in the acoustic wave. An oscillator circuit is connected to the input transducer and to the output transducer, the oscillator circuit including an amplifier and providing an output signal indicative of a change in the acoustic wave.

Abstract: A system and method for receiving communication signals is provided. According to the method, a plurality of communication signals is received, each communication signal comprising one or more source signals. The plurality of communication signals are multiplexed into a multiplexed signal, which is then converted into a baseband signal. The baseband signal is sampled to produce a digital multiplexed signal comprising a plurality of samples. The samples are interpolated to generate respective interpolated digital signals, which are then subject to a blind signal separation operation to separate each of the source signals.

Abstract: A surface acoustic wave sensor or identification device has a piezoelectric material, and an interdigitated transducer (IDT) input/output mounted on the piezoelectric material for receiving a radio frequency (RF) signal and propagating a corresponding surface acoustic wave along a surface of the piezoelectric material. An IDT finger electrode array is mounted on the piezoelectric material and is operable to communicate with the IDT input/output for transmission of a modified RF signal from the device. The IDT finger electrode array has at least one finger electrode segment whose propagating characteristics are controlled to control the nature of the modified RF signal. A biolayer is mounted on the piezoelectric material and is associated with the finger electrode segment, and a fluidic chamber is associated with the biolayer.

Abstract: A surface acoustic wave sensor or identification device has a piezoelectric substrate, an interdigitated transducer (IDT) input/output mounted on a substrate for receiving a radio frequency (RF) signal and propagating a corresponding surface acoustic wave along a surface of the substrate. An IDT reflector array is mounted on the substrate and operable to receive a surface acoustic wave and reflect the surface acoustic wave in modified form back to the IDT input/output for transmission of a corresponding modified RF signal from the device. The IDT reflector array has at least one reflector segment whose reflectivity characteristics are controlled to control the nature of the modified RF signal.

Abstract: SAW devices such as interdigital transducers (IDTs) have been widely used in RADAR applications and as filters. An IDT produces a SAW when excited by a single electrical pulse and can be fabricated to embody a code, which code provides for a passive autocorrelation of a SAW input to the IDT and thereby lends itself to further application as a signal generator in a communication device. However, internal dimensions of IDTs are inversely proportional to operating frequency, such that high frequency IDTs present significant manufacturing difficulties. Fabrication of IDTs for high frequency applications is simplified by exploiting a harmonic frequency SAW generated by IDTs. An IDT may therefore be designed according to fundamental frequency internal dimension criteria but can operate at a multiple of the fundamental frequency, thereby providing much higher frequency operation than conventional SAW systems.

Abstract: A wireless radio modem for incorporation into a host system includes radio frequency modulation/demodulation circuitry employing electronic device elements that operate in a frequency range that minimize the RF interference between the radio modem and the host system. Radio modem power conservation is further maximized by 1) simplifying signal modulation processing by use of a single sideband suppressed carrier waveform transition table, thereby reducing processing requirements; and 2) incorporating a "sleep mode" feature in which all non-timer circuitry is powered-down when not in use.

Abstract: A wireless radio modem that may be incorporated into a host system or connected through a PCMCIA or similar port to a host system includes radio frequency modulation/demodulation circuitry employing electronic device elements that operate in a frequency range that minimizes the RF interference between the radio modem and the host system. Radio modem power conservation is maximized by 1) simplifying signal modulation processing by use of a two-point waveform transition table, thereby reducing processing requirements; and 2)incorporating a "sleep mode" feature in which all non-timer circuitry is powered-down when not in use.

Abstract: A wireless radio modem for incorporation into a host system includes radio frequency modulation/demodulation circuitry employing electronic device elements that operate in a frequency range that minimize the RF interference between the radio modem and the host system. Radio modem power conservation is further maximized by 1) simplifying signal modulation processing by use of a single sideband suppressed carrier waveform transition table, thereby reducing processing requirements; and 2) incorporating a "sleep mode" feature in which all non-timer circuitry is powered-down when not in use.

Abstract: A wireless radio modem for incorporation into a host system includes radio frequency modulation/demodulation circuitry employing electronic device elements that operate in a frequency range that minimize the RF interference between the radio modem and the host system. Radio modem power conservation is further maximized by 1) simplifying signal modulation processing by use of a single sideband suppressed carrier waveform transition table, thereby reducing processing requirements; and 2)incorporating a "sleep mode" feature in which all non-timer circuitry is powered-down when not in use.