Abstract: Methods, apparatus, and integrated circuits that provide radiation hardening through chip level integrated recovery are provided. The apparatus may include first and second circuits within a partition of an integrated circuit having isolated grounds and a state machine configured to monitor current leakage of the first circuit while the first circuit is powered on and to power on the second circuit and power off the first circuit when the monitored first circuit current leakage exceeds a first current leakage threshold.

Abstract: Methods, apparatus, and integrated circuits that provide radiation hardening through chip level integrated recovery are provided. The apparatus may include first and second circuits within a partition of an integrated circuit and a state machine configured to monitor current leakage of the first circuit while the first circuit is powered on and to power on the second circuit and power off the first circuit when the monitored first circuit current leakage exceeds a first current leakage threshold. The method may include powering a first circuit of a partition within an integrated circuit, monitoring current leakage of the first circuit while the first circuit is powered on and the second circuit is powered off, and powering off the first circuit and powering on the second circuit when the monitored first circuit current leakage exceeds a first current leakage threshold.

Abstract: A device is disclosed for detecting and imaging an object comprising a sensor node including a sensor for sensing the object and a camera for recording an image of the object. A wireless sensor radio is connected to the camera for transmitting the recorded image of the object to a display node for displaying the image of the object at a remote location.

Abstract: A hub joint includes a metal rod and pin for joining tubular members in three-dimensional space for assembling a frame structure. The hub joint enables rapid assembly, rapid reconfiguration, and rapid disassembly without using any specialized tools. Multiple hub joints may be used to form geodesic domes, freestanding trusses, space frame slabs, tetrahedrons, and pentahedrons. The hub joints allow different frame configurations that are lightweight, strong, durable, scalable, expandable, and portable.

Abstract: A hub joint includes a metal rod and pin for joining tubular members in three-dimensional space for assembling a frame structure. The hub joint enables rapid assembly, rapid reconfiguration, and rapid disassembly without using any specialized tools. Multiple hub joints may be used to form geodesic domes, freestanding trusses, space frame slabs, tetrahedrons, and pentahedrons. The hub joints allow different frame configurations that are lightweight, strong, durable, scalable, expandable, and portable.

Abstract: A built in current sensor circuit (BICS) for use in integrated circuit testing utilizing the Quiescent Power Supply testing technique comprised of a detecting transistor, an s-ram cell and a buffer cell electrically coupled in a cascaded configuration to perform a comparator function, a reference source comprised of a current generating transistor and a voltage level setting transistor, and an active output load comprised of a single p-MOSFET sized to draw a unique amount of current when a respective circuit under test is determined to be defective., whereby the additional current drawn by the active output load is readily observable on the bias line by an external standard off-the-shelf current monitor. The built in current sensor circuit thereby alleviates the excessive use of area overhead in deep submicron integrated circuits and the need for separately propagating a defect signal to an output pin.

Abstract: A diagnostic instrument for determining a cardiovascular system parameter. In one embodiment, the instrument takes the form of a portable pulse oximeter comprising a light to frequency converter (LFC) as a sensor. Also provided is a light to frequency converter comprising a photoresistor and capacitor in circuit communication with an inverting Schmitt trigger and configured such that the inverter generates a periodic electrical signal corresponding to the amount of electromagnetic radiation illuminating the photoresistor.