Abstract: A smart logistic system for interrogating radio frequency identification (RFID) tags, including: a) a portable support and protective structure adapted for mounting on a tine of the forklift, the support and protective structure including a mounting section, includes a top surface and a bottom surface, and a component section each extending along at least a portion of the support and protective structure, the mounting section configured to secure the support and protective structure to the tine and the component section including a compartment; b) a RFID reader securely accommodated inside the compartment; c) a RFID antenna; and d) a power source securely accommodated in the component section. The support and protective structure being portable and the RFID reader being self sufficient, the smart logistic system can be deployed to another tine of a forklift within seconds.

Abstract: A method and system for distance measurement in a low or zero intermediate frequency (IF) half-duplex communications loop measures the distance between two transceivers without synchronizing the local oscillators of the two transceivers. Transceiver distance may be measured in systems that use direct conversion (zero IF) or intermediate frequencies that are so low that phase noise significantly reduces the accuracy of the distance measurement. The communications loop demodulates, re-modulates and retransmits a received signal to provide a re-transmitted signal that has the same carrier and modulation frequency as the received signal. A phase-hold circuit provides an analog system for half-duplex operation that retains the frequency and phase information of the received signal for retransmission in a subsequent time slot.

Abstract: A system for generating a profile of particulate components of a body fluid sample is provided. The system includes: (a) a device for causing controlled flow of the body fluid sample on a substrate, the controlled flow of the body fluid sample leading to a differential distribution of the particulate components on the substrate; and (b) a magnifying device being for providing a magnified image of differentially distributed particulate components on the substrate, the magnified image representing a profile of the particulate components of the body fluid sample.

Abstract: A system and method is capable of identifying multipath wireless signals, their relative strength, and their position. The system and method may be used in wireless distance measurement to generate a distance measurement free of multipath distortion. First and second wireless devices transmit and receive signals to generate multipath information. For distance measurements, this information may be used to calculate the true distance between two wireless devices that is compensated for multipath. The system and method may be used in a mobile wireless communications system to discriminate between various mobile wireless communications devices located in a region, for example, to conduct a commercial transaction or transmit or receive other information.

Abstract: A system, apparatus, and method for determining the distance between two objects using an indirect propagation delay measurement is disclosed. A frequency hopping scheme (such as the Bluetooth™ technology) is used to measure the relative phase offset of the received signal between the various frequencies. For a given distance between the objects, the phase offset vs. frequency curve is a straight line with the slope dependent upon the measured distance. After the phase of the received signals is detected, the data is plotted on a curve and the slope is calculated.

Abstract: A method and system for distance measurement in a low or zero intermediate frequency (IF) half-duplex communications loop provides a mechanism for measuring the distance between two transceivers without synchronizing the local oscillators of the two transceivers. Transceiver distance may be measured in systems that use direct conversion (zero IF) or intermediate frequencies that are so low that phase noise significantly reduces the accuracy of the distance measurement. The communications loop is closed by demodulating, re-modulating and re-transmitting a received signal to provide a re-transmitted signal that has the same carrier and modulation frequency as the received signal. A phase-hold circuit provides an analog system for half-duplex operation that retains the frequency and phase information of the received signal for retransmission in a subsequent time slot.

Abstract: A system, apparatus, and method for determining the distance between two objects using an indirect propagation delay measurement is disclosed. A frequency hopping scheme (such as the Bluetooth™ technology) is used to measure the relative phase offset of the received signal between the various frequencies. For a given distance between the objects, the phase offset vs. frequency curve is a straight line with the slope dependent upon the measured distance. After the phase of the received signals is detected, the data is plotted on a curve and the slope is calculated. A wireless slave device remains phase locked with another device in a half-duplex communication mode by employing a low-drift phase locked loop employing a voltage controlled crystal oscillator. The phase locked loop further employs a mechanism that provides immunity from transitory phase slip at a time when the loop is opened.

Abstract: A method and system for radio-frequency proximity detection uses received signal strength variance to determine proximity distance. A signal is received from a transmitting device by a receiving device and the variance of the signal computed over time. One or more ranges can be established to determine whether or not the variance falls within the expected range. A lower variance indicates a shorter proximity distance and therefore signals from devices within a variance range are established as being within a particular distance range. Denial/granting of service, or restricting of services can be performed in response to determining that a transmitting device is outside of a variance range. Variance computations can be performed at both ends of a transceiver link and results communicated and compared at both transceivers to further improve the accuracy of the proximity determination.

Abstract: A system, apparatus, and method for determining the distance between two objects using an indirect propagation delay measurement is disclosed. A frequency hopping scheme (such as the Bluetooth™ technology) is used to measure the relative phase offset of the received signal between the various frequencies. For a given distance between the objects, the phase offset vs. frequency curve is a straight line with the slope dependent upon the measured distance. After the phase of the received signals is detected, the data is plotted on a curve and the slope is calculated.

Abstract: A fluid sample carrier is provided. The fluid sample carrier includes at least one lane occupying a length, and a portion of a width, of a surface of the carrier. The lane is sized and configured such that a fluid sample deposited thereupon would flow within the lane upon exertion of a directional force upon the fluid sample. The fluid sample carrier is also designed to prevent contamination of the apparatus in which it is held.

Abstract: A system and method is capable of identifying multipath wireless signals, their relative strength, and their position. The system and method may be used in wireless distance measurement to generate a distance measurement free of multipath distortion. First and second wireless devices transmit and receive signals to generate multipath information. For distance measurements, this information may be used to calculate the true distance between two wireless devices that is compensated for multipath. The system and method may be used in a mobile wireless communications system to discriminate between various mobile wireless communications devices located in a region, for example, to conduct a commercial transaction or transmit or receive other information.

Abstract: A system, apparatus, and method for determining the distance between two objects using an indirect propagation delay measurement is disclosed. A frequency hopping scheme (such as the Bluetooth™ technology) is used to measure the relative phase offset of the received signal between the various frequencies. For a given distance between the objects, the phase offset vs. frequency curve is a straight line with the slope dependent upon the measured distance. After the phase of the received signals is detected, the data is plotted on a curve and the slope is calculated.

Abstract: A system for generating a profile of particulate components of a body fluid sample is provided. The system includes: (a) a device for causing controlled flow of the body fluid sample on a substrate, the controlled flow of the body fluid sample leading to a differential distribution of the particulate components on the substrate; and (b) a magnifying device being for providing a magnified image of differentially distributed particulate components on the substrate, the magnified image representing a profile of the particulate components of the body fluid sample.

Abstract: A method of demodulation is provided for demodulating a signal in which different data symbols are represented by different frequencies, such as a modem. A set of undelayed and a set of delayed sample values are provided and a frequency transform calculation is performed on the difference between the first N undelayed values and the last N delayed values. An early/late synchronization decision is taken dependent on the difference value.

Abstract: A device for displaying forward and reflected power values simultaneously comprises a plurality of display segments which are switched on in a predetermined sequence to display the forward power and switched off in a predetermined sequence to display the reflected power.