Abstract: Methods and devices use information from the original SAR images to provide measurements that can be applied to corresponding change detection products. This produces reliable registration and alignment for the change products even when the imaging geometry is significantly changed.

Abstract: Embodiments described herein simplify the recognition of objects in synthetic aperture radar (SAR) imagery. This may be achieved by processing the image in order to make the shadow caused by the object appear more similar to the object. Alternatively, this may be achieved by processing the image in order to make the layover caused by the object appear more similar to the object. Manipulation of the shadow caused by the object and the layover caused by the object may comprise altering the aspect ratio of the image, and in the case of manipulating the shadow caused by the image, may further comprise transforming the image by reflection or rotation. The aspect ratio of the image may be altered based on information about the image collection geometry, obtained by the SAR.

Abstract: Methods and devices use information from the original SAR images to provide measurements that can be applied to corresponding change detection products. This produces reliable registration and alignment for the change products even when the imaging geometry is significantly changed.

Abstract: Embodiments described herein simplify the recognition of objects in synthetic aperture radar (SAR) imagery. This may be achieved by processing the image in order to make the shadow caused by the object appear more similar to the object. Alternatively, this may be achieved by processing the image in order to make the layover caused by the object appear more similar to the object. Manipulation of the shadow caused by the object and the layover caused by the object may comprise altering the aspect ratio of the image, and in the case of manipulating the shadow caused by the image, may further comprise transforming the image by reflection or rotation. The aspect ratio of the image may be altered based on information about the image collection geometry, obtained by the SAR.

Abstract: Integrated jitter compliant clock signal generation apparatus and methods are provided. Input signals having different frequencies are used to generate respective clock signals having closely spaced frequencies. The input signals might be generated, for example, in adjacent Phase Locked Loops (PLLs) which receive reference clock signals. The reference clock signals, or signals from which the reference clock signals originate, are also closely spaced. The closely spaced reference clock signals are effectively separated for cleanup and then brought back together to provide the closely spaced clock signals. This allows cleanup of the closely spaced reference clock signals to occur at staggered and more widely spaced frequencies. These techniques could also be applied to reference clock signals which are harmonically related and are used to generate harmonically related output clock signals.

Abstract: A phase difference between a reference clock signal and a feedback signal is digitally detected. A resultant phase detection signal is digitally filtered, and a PLL (Phase Locked Loop) output signal is synthesized in a fractional synthesizer under control of the digitally filtered phase detection signal. A feedback path, which could include an integer divider and/or a fractional N divider, provides the feedback signal based on the PLL output signal. The combination of a wide bandwidth fractional synthesizer and a low bandwidth digital PLL provides for a low bandwidth jitter filtering function with a wide bandwidth PLL to suppress VCO (Voltage Controlled Oscillator) noise and crosstalk.

Abstract: Integrated jitter compliant clock signal generation apparatus and methods are provided. Input signals having different frequencies are used to generate respective clock signals having closely spaced frequencies. The input signals might be generated, for example, in adjacent Phase Locked Loops (PLLs) which receive reference clock signals. The reference clock signals, or signals from which the reference clock signals originate, are also closely spaced. The closely spaced reference clock signals are effectively separated for cleanup and then brought back together to provide the closely spaced clock signals. This allows cleanup of the closely spaced reference clock signals to occur at staggered and more widely spaced frequencies. These techniques could also be applied to reference clock signals which are harmonically related and are used to generate harmonically related output clock signals.

Abstract: Signal timing phase selection and timing acquisition apparatus and techniques are disclosed. A timing phase that is most closely aligned with a phase of information carried by a received signal is selected from a plurality of timing phases. The selected timing phase may be used, for example, as a reference signal for a phase detector in a Phase-Locked Loop (PLL). The received signal may be sampled one or more times per timing phase. In a multiple-sample implementation, the samples may be used for timing phase selection, for detection of a known initial pattern of a burst of information to thereby detect the start time of a an information burst, or both.

Abstract: The present invention discloses a host receiver synchronizer for passive optical networks, and in particular a burst clock data recovery circuit in a host receiver in a bursty asynchronous communication system having a non-data preamble of less than 250 ns, for recovering a clock signal from a subscriber data burst. The circuit comprises: an adjustable oscillator for generating an output clock signal in response to a signal at an input thereof; a first comparator for comparing a frequency and phase of the output clock signal to that of a reference signal and feeding back a first feedback signal to the oscillator input; and a second comparator for comparing the frequency and phase of the output clock signal to that of the data burst and feeding back a second feedback signal to the oscillator input once the output clock signal is locked in frequency with the reference signal. The output clock signal is locked in frequency and phase to the data burst before receipt of the last bit of the preamble.

Abstract: Signal timing phase selection and timing acquisition apparatus and techniques are disclosed. A timing phase that is most closely aligned with a phase of information carried by a received signal is selected from a plurality of timing phases. The selected timing phase may be used, for example, as a reference signal for a phase detector in a Phase-Locked Loop (PLL). The received signal may be sampled one or more times per timing phase. In a multiple-sample implementation, the samples may be used for timing phase selection, for detection of a known initial pattern of a burst of information to thereby detect the start time of a an information burst, or both.

Abstract: The present invention discloses a host receiver synchronizer for passive optical networks, and in particular a burst clock data recovery circuit in a host receiver in a bursty asynchronous communication system having a non-data preamble of less than 250 ns, for recovering a clock signal from a subscriber data burst. The circuit comprises: an adjustable oscillator for generating an output clock signal in response to a signal at an input thereof; a first comparator for comparing a frequency and phase of the output clock signal to that of a reference signal and feeding back a first feedback signal to the oscillator input; and a second comparator for comparing the frequency and phase of the output clock signal to that of the data burst and feeding back a second feedback signal to the oscillator input once the output clock signal is locked in frequency with the reference signal. The output clock signal is locked in frequency and phase to the data burst before receipt of the last bit of the preamble.

Abstract: An eye opener circuit is provided which performs a data re-timing/eye opening function on a data signal after having been corrupted by jitter. The circuit uses a PLL driven by a clock source which was the same clock source used in timing the data signal originally. The PLL generates a local clock used to re-time the data. A phase error may be introduced into the PLL, or into the data signal.

Abstract: The present invention pertains to compounds of the following formula, which are, inter alia, antiproliferative agents, anticancer agents, antimycobacterial agents, antituberculosis agents, and/or thioredoxin/thioredoxin reductase inhibitors: wherein: Q is ?O or ?N—S(?O)2—RQ; RQ is —H or optionally substituted C1-7alkyl, C3-20heterocyclyl, or C5-20aryl; Ar is optionally substituted C5-20aryl; RO is an oxy substituent; the bond marked ? is a single bond or a double bond; the bond marked ? is a single bond or a double bond; R3 and R5 are each independently ring substituents; R2 and R6 are each independently ring substituents; and pharmaceutically acceptable salts, esters, amides, solvates, hydrates, and protected forms thereof. The present invention also pertains to pharmaceutical compositions comprising such compounds, and the use of such compounds and compositions, both in vitro and in vivo, for example, in the treatment of proliferative conditions, (e.g., cancer), mycobacterial infections (e.g.

Abstract: This invention pertains to certain 4-(1-(sulfonyl)-1H-indol-2-yl)-4-(hydroxy)-cyclohexa-2,5-dienone compounds, and analogs thereof, including compounds of the following formula, which are, inter alia, antiproliferative agents, anticancer agents, and/or thioredoxin/thioredoxin reductase inhibitors: formula (I) wherein: Ar is a 1-(sulfonyl)-1H-indol-2-yl group; the bond marked ? is independently: (a) a single bond; or: (b) a double bond; the bond marked ? is independently: (a) a single bond; or: (b) a double bond; the group —ORO is independently: (a) —OH; (b) an ether group (e.g., —OMe); or: (c) an acyloxy (i.e., reverse ester) group (e.g.

Abstract: A compound of general structure I, wherein the compound is optionally in the form of an N-oxide or S-oxide or prodrug form and/or pharmaceutically acceptable salt thereof wherein: each of R1 to R9 is independently selected from hydrogen, hydroxyl, alkoxy, halo, mesyl, CX3 (X=halo), —O(CH2)nNYZ—, substituted or unsubstituted lower alkyl, substituted or unsubstituted heteroalkyl, substituted or unsubstituted aryl or heteroaryl, and substituted or unsubstituted aralkyl or heteroaralkyl; optionally R6 and R7 together form a dioxymethylene (—OCH2O—) unit and wherein n is 1 to 3 and Y and Z are independently selected from any of the following: C1-C6 straight chain, branched or cyclic substituted or unsubstituted alkyl group, Y and Z can be taken together to form a cyclic alkyl or hetereoalkyl group wherein in addition to N the hetereoalkyl group comprises a heteroatom selected from N, O or S.

Abstract: A trusted path device is described which may be used stand alone or may be retrofitted to a users untrusted computer console or workstation so that an untrusted data input may be displayed on an untrusted display and verified by the user, following which the trusted data can be output to an untrusted or trusted device or network. The output may be encrypted or not, by means of an encryption device which may or may not use a ‘one time pad’ key provided from a structured array of retrievable “one time pad” keys having associated uniquely there with, a serial number which itself need not be encrypted but with which the input data and encrypted output data are uniquely associated. Sufficient “one time pad” keys are provided on a commonly available and physically manageable medium so as to allow much simplified key management procedures while still maintaining high levels of correctness and effectiveness of the encryption processes.

Abstract: A resistance heater for performing heat treatment of the braze-affected area of a metallic sleeve attached by brazing within and to a metallic tube, comprises a metal tube (10) of which a portion (16) is formed with a spiral groove (11) which penetrates the wall thickness of the tube (10) and thereby defines a heating coil. The radial thickness of the convolutions of the coil varies lengthwise of the coil so that, when energized with electrical current, the coil develops a temperature profile which is determined by the variation in radial thickness. The temperature profile may be selected according to the needs of the brazed joint to be heat treated.