Patent
Circuit System With Supply Voltage For Driving An Electromechanical Switch
Reads0
Chats0
TLDR
In this paper, a piezoelectric transformer (46) provides a relatively high voltage output signal or a relatively low-voltage output signal to control movement of a switch (20) between a closed position, placing the load in the conducting state, and an open position.Abstract:
A circuit (10) for controlling operation of a load (16). In one example, a MEMS switch (20) is positioned in the circuit(10) to place the load (16) in one of a conducting state or a nonconducting state. A piezoelectric transformer (46) provides a relatively high voltage output signal or a relatively low voltage output signal to control movement of the switch (20) between a closed position, placing the load in the conducting state, and an open position. The high voltage output signal includes a frequency component in the resonant frequency range of the transformer (46). Control circuitry (65) provides an input voltage signal to the piezoelectric transformer (46) to provide the high voltage output signal or the low voltage output signal at the output terminals of the piezoelectric transformer (46).read more
Citations
More filters
Patent
Distance iris recognition
TL;DR: In this paper, a system for one dimensional segmentation of an iris of an eye into a map of the iris and classification of the map into unaffected areas and affected areas is presented.
Patent
Combined face and iris recognition system
Gary E. Determan,Vincent C. Jacobson,Jan Jelinek,Thomas L. Phinney,Rida M. Hamza,Terry Ahrens,George A. Kilgore,Rand P. Whillock,Saad J. Bedros +8 more
TL;DR: In this article, a system using face and iris image capture for recognition of people was proposed, where the system may have wide field-of-view, medium and narrow-field-ofview cameras to capture images of a scene of people, faces and irises.
Patent
Standoff iris recognition system
TL;DR: An iris recognition system having pupil and iris border conditioning prior to iris mapping and analysis is described in this paper, where the system may obtain and filter an image of an eye, and the pupil of the mage may be selected and segmented Portions of the pupil border can be evaluated and pruned.
Patent
System for iris detection tracking and recognition at a distance
TL;DR: A stand-off range or at-a-distance iris detection and tracking for iris recognition having a head/face/eye locator, a zoom-in iris capture mechanism and an IRIS recognition module is described in this article.
Patent
An iris recognition system having image quality metrics
TL;DR: In this paper, an iris recognition system implementing image quality metrics to assess the quality of an acquired eye image for reliable operation is presented, where images with low image quality may be rejected or flagged based upon the application.
References
More filters
Patent
Integrated detonators for use with explosive devices
TL;DR: A detonator assembly is provided for use in oilfield operations to detonate an explosive downhole including a capacitor discharge unit and initiator electrically connected together to form a single unit as discussed by the authors.
Patent
Electronic circuit comprising embedded piezoelectric transformer
TL;DR: In this paper, an electronic circuit provided with a piezoelectric transformer for driving an electronic component is described, and an intermediate layer comprising an insulating material is interposed between the primary and secondary plates.
Patent
Semiconductor integrated circuit including circuit for driving electrostatic actuator, micro-electro-mechanical systems, and driving method of electrostatic actuator
Tamio Ikehashi,Hiroaki Yamazaki +1 more
TL;DR: A semiconductor integrated circuit comprises an electrostatic actuator, an estimation circuit, a storage circuit and a bias circuit as discussed by the authors, where the storage circuit stores a result of the estimation of the charge amount by the estimation circuit.
Patent
Electro-luminescent backlighting circuit with multilayer piezoelectric transformer
TL;DR: In this article, a multilayer piezoelectric transformer is provided using radial and shear vibration modes for step-up voltage conversion applications, which is used in a circuit for providing electro-luminescent (EL) backlighting.
Patent
Ultrasonic probe and body cavity insertion-type ultrasonic diagnostic device mounted with the same
TL;DR: In this article, an ultrasonic probe is provided with a high voltage generating means for generating a driving signal when the driving signal for driving the ultrasonic vibrator is input and applying the high voltage to the vibrator.