Abstract: Integrated photo detector receptor with Memristor Memory cell to perform simultaneous image capture and image matching as part of meta-security camera.

Abstract: Integrated photo detector receptor with Memristor Memory cell to perform simultaneous image capture and image matching as part of meta-security camera.

Abstract: A non-volatile Content Addressable Memory element including a non volatile memristor memory element; a data bus for applying a data signal to be programmed into the memristor memory element; a search bus for applying a search term; an output or match bus; logic to selectively enable the search bus and the data bus; wherein the logic is configurable to set the logic state of the memristor according to a logic signal applied to the data bus, and configurable to enable the logic state of the memristor to be compared to a logic state on the search bus with the match bus signaling a true logic state upon matching.

Abstract: An apparatus for storing information has a input device to allow a user to communicate with the apparatus and to allow the apparatus to output information to said user; a storage portion including a compression device to compress information stored in the storage portion; and a cipher to perform multilayered encryption and decryption to allow the passing and receiving of the information stored on the apparatus in a secure manner.

Abstract: There is provided an electro-optical component comprising (a) a substrate, (b) a phase-variable element carried on the substrate, (c) a memory carried on the substrate for storing data representative of a phase state for the phase-variable element; and (d) a controller carried on the substrate, for utilizing the data and setting the phase state for the element. There is also provided an electro-optical component comprising (a) a substrate, (b) a phase-variable element carried on the substrate, and (c) a circuit carried on the substrate for computing and applying a phase state for the phase-variable element.

Abstract: There is provided an image capturing and processing apparatus. The apparatus includes a plurality of image capturing and processing elements arranged in an array on a common substrate. Each of the plurality of elements includes a photodetector for detecting light that produces a signal corresponding to light incident upon the photodetector, and a processor for producing a forward discrete wavelet transform of the signal. The processor also compensates for motion represented by a change in the signal.

Abstract: A pixel comprises a Field Effect Transistor formed on a gallium arsenide substrate wherein a source (1) of the field effect transistor is a photoresponsive element, a gate of the field effect transistor is shielded from light and acts as a switch to enable/disable readout and a drain (4) of the field effect transistor is connected to a readout line. Also disclosed an X-Y imager formed on a gallium arsenide substrate from a plurality of pixels and a processing area wherein each pixel comprises a photoresponsive source (1), a gate formed from a plurality of metal fingers (7) across the source (1), a drain (4) connected to a readout line and a gate resistor (12) connected in series with the fingers (7). The arrangement of fingers (7) across the source (1) in co-operation with the gate resistor (12) produces an enhanced optical gain.

Abstract: The detector system comprises a CW transmitter which is coupled to a receiver in a manner such that an approach of a vehicle produces an amplitude increasing excursion in the envelope of the received signal. At the receiver, the envelope of the received signal is sampled to derive the quantity .alpha.t/V.sub.p which is proportional to the speed of the vehicle, where V.sub.p is equivalent to the envelope voltage of the received signal at an instant I.sub.p during the leading edge portion of each excursion at which the first-occuring marked decrease of the slope of the leading edge occurs less the envelope voltage prior to the excursion and .alpha.t is an electrical quantity proportional to the maximum slope of the leading edge of each excursion during the leading edge portion preceding the instant I.sub.p.

Abstract: A system for the remote identification of objects using near-field electromagnetic coupling between an interrogator a transponder and a receiver in which a reply carrier at a subharmonic of the interrogation frequency is obtained by regulating, with minimum energy loss and synchronously with the interrogator signal, the energy exchange process between the transponder coupling element and a complementary storage element, and further varying, also with minimum energy loss and synchronously with the resultant oscillation waveform, the said energy exchange process so that the reply carrier becomes modulated with an information bearing code, the modulation rate being not constrained by the transponder tuned circuit bandwidth.

Abstract: Disclosed is a vehicle detection system comprising a transmitter coupled to a receiver via a sensor arranged to produce a change in the envelope of the received signal upon passage of a vehicle. In order to distinguish between changes in the received signal caused by variations in the environmental conditions and the approach of a vehicle, the system is provided with an identification circuit which periodically samples the received signal. The sampled voltages, which are representative of the envelope of the received signal, are then stored and supplied to a comparator which compares the envelope with the sampled voltage and provides an output signal indicating approach of a vehicle when the difference between the envelope level and the sampled voltage exceeds a predetermined value.

Abstract: In the disclosed system the speed of a vehicle passing over the sensing coils of the detection system is determined by sampling the envelope voltages occurring during the leading edge portion of the disturbance in the envelope of the received signal produced by an approaching vehicle. This is accomplished by sampling the envelope voltage at a first instant at which the slope of the leading edge is at a maximum and at a second instant occurring at a fixed time interval subsequent to the first instant. The voltage sampled at the first instant is then subtracted from the voltage sampled at the second instant and the difference divided by a voltage sampled at a third instant at which the slope of the leading edge first starts to decrease to produce a signal indicative of the vehicle speed.