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Cloaking System Using Optoelectronically Controlled Camouflage
A Cloaking System designed to operate in the visible light spectrum, utilizes optoelectronics and/or photonic components to conceal an object within it.
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| Number | Title | Issue Date |
| 8183854 | Measuring linear velocity An apparatus for measuring linear velocity of a movable element relative to a stationary element includes a magnetic element fixed in relation to the stationary element. A soft-magnetic yoke is fixed in relation to the movable element to move with the movable elemen... | 05/22/2012 |
| 7378721 | Chip on lead frame for small package speed sensor A sensor package apparatus includes a lead frame substrate that supports one or more electrical components, which are connected to and located on the lead frame substrate. A plurality of wire bonds are also provided, which electrically connect the electrical compone... | 05/27/2008 |
| 7369960 | Device and method for detecting an angular position of a rotating object In detecting the time at which a rotating object passes a given angular position, a value range of an angular position sensor output signal which varies relatively rapidly with angular position acts as a trip threshold that, when exceeded, indicates the object has a... | 05/06/2008 |
| 7349796 | Apparatus and method for judging a piston position in an engine Detection of which of a plurality of reference angle positions a crankshaft of an engine arrives at is executed to subsequently determine a crank angle region in which an output pattern of a cam angle signal is determined, based on which of the plurality of referenc... | 03/25/2008 |
| 7275509 | Method for engaging the starter pinion of a starter with the starter ring gear of an internal combustion engine during the running-down of the internal combustion engine A method is provided for engaging a starter pinion of a starter with a starter ring gear of an internal combustion engine during the running-down of the internal combustion engine, which internal combustion engine has an arrangement for determining rotational speed ... | 10/02/2007 |
| 7274124 | Electric generator The present invention discloses a generator (1) able to generate either unidirectional current or bi-directional current. A rotatable disc (7) has a conductive track (9) and a ferromagnetic bridge (8). Brushes (12, 13) switchingly ... | 09/25/2007 |
| 7265538 | Method and device for measuring the rotational speed of a pulse-activated electric motor based on a frequency of current ripples A method and a device for measuring the speed of a pulse-activated electric motor are described. According to this method, the motor is fully activated at time intervals to be determined for a defined measuring time by the circuit element provided for timing and, in... | 09/04/2007 |
| 7221150 | Toothed shell on a variable reluctance speed sensor An improved variable reluctance speed sensor configuration yields increased signal strength for a given sensor element diameter and/or sensor-to-speed wheel spacing. The improved sensor according to various embodiments of the invention comprises a plurality of passa... | 05/22/2007 |
| 7221117 | Method and system for controlling an electric motor in the event of flux reduction The present invention relates to a method and a system for correcting references (xref), in the case of flux reduction, used in a speed variator for controlling an electric motor M having a three-phase supply, for example of the synchronous or asynchronou... | 05/22/2007 |
| 7205759 | Apparatus and method for determining an engine speed A removable sensor assembly for non-intrusively sensing instantaneous speed of an engine comprising a crankshaft having a respective end equipped with an externally accessible bolt, the removable sensor assembly comprising: a housing comprising a recess configured t... | 04/17/2007 |
| 7196527 | Redundant compact encoders A position transducer for a rotary member such as the rotor of a motor has a rotating encoder disc and flat, disc-shaped elements interacting with the encoder disc to produce position dependent signals. The encoder disc has at least one active element such as metal ... | 03/27/2007 |
| 7163336 | Instrument for non-contact infrared temperature measurement having current clamp meter functions A handheld instrument that accomplishes infrared (IR) temperature measurement and non-contact electrical current measurement. The instrument has a case, a current-sensing device coupled to the case and operable to be placed around a conductor, for generating an outp... | 01/16/2007 |
| 7157906 | Double variable reluctance resolver for a multiple speed resolver system A double variable reluctance resolver in which a redundancy is given to a variable reluctance resolver to improve reliability. The double variable reluctance resolver also functions as a multiple speed resolver system. ... | 01/02/2007 |
| 7075290 | Tachometer apparatus and method for motor velocity measurement A method and apparatus for determining the velocity of a rotating device is described herein. The apparatus includes a magnet assembly affixed to a rotating shaft of a rotating device and a circuit assembly. The circuit assembly includes a circuit interconnection ha... | 07/11/2006 |
| 7071657 | Method and apparatus for the production of power frequency alternating current directly from the output of a single-pole type generator A single-pole type generator with low loss magnetic core is excited by a field coil that is part of a low loss series resonant circuit tuned to a desired AC power frequency, which may be frequencies such as 50 Hz or 60 Hz or 400 Hz. The series resonant circuit is ex... | 07/04/2006 |
| 7068015 | Wind power plant having magnetic field adjustment according to rotation speed A wind power plant where the driving shaft communicates with a synchronous generator (3) optionally through a gear (2) and with a transformer, if any, communicating through an AC/DC inverter 7 with an HVDC transmission cable 9. The synchr... | 06/27/2006 |
| 7059300 | Ignition control apparatus for internal combustion engine An ignition control apparatus for an internal combustion engine for preventing ignition control upon occurrence of rotation reversal of the engine includes a rotation sensor (3) disposed in opposition to projections (11, 12) of a rotor (1), and ... | 06/13/2006 |
| 7032440 | Engine rotation information detection device An engine rotation information detection device including: a generator that rotates in synchronization with an engine to output an AC voltage; a pulse signal generator that detects reluctors of a rotor having many reluctors and one reluctor missing portion to genera... | 04/25/2006 |
| 6965227 | Technique for sensing the rotational speed and angular position of a rotating wheel using a variable threshold To detect the rotational speed and angular position of a rotating wheel, a non-contact sensor (e.g., an optical sensor or a Hall sensor) scans scan marks on the wheel, and generates a pulse train. The amplitude of the pulses is compared in a comparator with a variab... | 11/15/2005 |
| 6885186 | Resonant circuit for increasing variable reluctance sensor output An apparatus and method for measuring a characteristic of a machine. A variable reluctance sensor (VRS) is coupled to the machine. A first switching device and capacitor, coupled in parallel with the VRS, boosts a variable amplitude of a basic output signal generate... | 04/26/2005 |
| 6876194 | Linear velocity sensor and method for reducing non-linearity of the sensor output signal Linear velocity sensor and method for reducing non-linearity in the output signal of the sensor are provided. The sensor comprises a ferromagnetic housing including an opening. The sensor further comprises a spool disposed in the housing. The spool includes a bore f... | 04/05/2005 |
| 6791217 | Method and system for motor velocity measurement A method and system for determining the velocity of a rotating device is described herein. The system includes an apparatus with a set of sense magnets affixed to a rotating shaft of the rotating device and a circuit assembly. The circuit assembly includes a circuit... | 09/14/2004 |
| 6784658 | Signal generator for multi-cylinder internal combustion engine and rotation information detector using signal generator A signal generator for an internal combustion engine for obtaining precise information on a rotational direction of the engine when the engine runs at extremely low speed, comprising: a rotor having a first series of reluctor corresponding to a cylinder of the engin... | 08/31/2004 |
| 6777925 | Input circuit for inductive engine speed sensor A circuit for inputting and processing a signal from a speed sensor element, includes a comparator having first and second input terminals and first and second input circuits connected to receive the signal. The first input circuit is connected to a first input term... | 08/17/2004 |
| 6741058 | Drive unit for initialization A drive unit for calibrating an indicator/meter of a vehicle is provided in which a pointer in an indicator for a vehicle can point immediately after an ignition switch is turned ON, and the frequency of seeing motion of the pointer in an initializing operation by a... | 05/25/2004 |
| 6559632 | Method and apparatus for determining linear and angular velocity of a moving body An apparatus and method for determining linear and angular velocity of a moving body. A magnet is attached or fixed to the body, the velocity of which is to be determined. The apparatus comprises a sensor comprising a core of magnetic material and a coil ... | 05/06/2003 |
| 6552531 | Method and circuit for processing signals for a motion sensor The present invention relates to a method and a circuit arrangement for processing signals for an active motion sensor which generates at least one first sequence of input pulses that contain motion information. By at least one integrating filter circuit,... | 04/22/2003 |
| 6541959 | Angular position sensing system with magnet and rotor arrangement A sensing system for measuring the angular displacement of a rotating shaft is disclosed. The sensing system comprises a rotor and a sensor assembly disposed within the rotor. The rotor is constructed and arranged to be securably mounted to the shaft such... | 04/01/2003 |
| 6476605 | Inductive sensor for target parameter detection and magnetic image feature determination Inductive sensor for non-contact detection of discontinuities of a conductive or ferromagnetic target for determination of target position, movement and speed, or generally of a magnetic image, including a plurality of receiving secondary windings associa... | 11/05/2002 |
| 6469500 | Method for determining the position and/or speed of motion of a control element that can be moved back and forth between two switching positions The invention relates to a method for determining the position and/or the speed of motion of a control element which can be moved back and forth between a first and second switching position. According to said method, an immersion body which is connected ... | 10/22/2002 |
| 6268720 | Method for determining the rates of motion and wheel for roller skates and skateboard A wheel for roller skates or roller boards, the wheel having a non-rotating axle of rotation and a wheel body rotatable around an axle of rotation, the wheel includes means for measuring the speed at the wheel and means in the wheel for determining its ra... | 07/31/2001 |
| 6208132 | Non-intrusive speed sensing for induction motors A sensing coil affixed to the outside of an induction motor housing uses flux signals from the motor to measure motor speed. In particular, components of the rotor current are measured and compared to analysis from stator fundamentals and sidebands to det... | 03/27/2001 |
| 6191550 | Method and apparatus for detecting abnormality in rotation sensor In a rotation sensor having a resolver attached to a rotor and a signal processing unit for angle detection for supplying a reference signal having a predetermined periodic waveform to the resolver, allowing the resolver to generate a sin signal having a ... | 02/20/2001 |
| 6181127 | Method and circuit for checking the width of the air gap in a speed sensor In the case of a method for checking the width of the measuring air gap of a magnetic speed sensor, square-wave output signals are generated from the measurement signals of the sensor by means of at least one prescribable threshold value. The pulse duty f... | 01/30/2001 |
| 5986448 | Revolving speed detecting device with reduced eddy current loss A revolving speed detecting device for use with a rolling contact bearing having a rotary ring and a fixed ring. It has a magnetic ring provided on the peripheral surface thereof with a plurality of teeth at equal pitches and mounted on the rotary bearing... | 11/16/1999 |
| 5893052 | Method and apparatus for testing sensing system performance An apparatus and method for testing, for example, ABS systems in which a variable reluctance detector is positioned adjacent a ring of ferromagnetic teeth mounted on a wheel is provided. The amplitude and period of individual cycles of the output of the d... | 04/06/1999 |
| 5828210 | X-ray tube anode drive speed monitor including flux pickup coil A method for monitoring a rotor speed of an X-ray tube anode drive includes acquiring axial flux pickup data from the rotor, using the axial flux pickup data to provide a flux spectrum, and estimating the rotor speed by analyzing the flux spectrum. The st... | 10/27/1998 |
| 5714941 | Integral information and energy storage system An integral information and energy storage system is disclosed comprising a disk drive having a housing, a shaft rotatably mounted therein, and a disk platter coupled to the shaft. A flywheel is also coupled to the shaft and includes, embedded in the flyw... | 02/03/1998 |
| 5644224 | Dual brushless resolver rate sensor A resolver rate sensor is disclosed in which dual brushless resolvers are mechanically coupled to the same output shaft. Diverse inputs are provided to each resolver by providing the first resolver with a DC input and the second resolver with an AC sinuso... | 07/01/1997 |
| 5451870 | Sensor for measuring the difference between the velocity of a cylinder and a piston in a dashpot A sensor for measuring the difference between the velocity and/or position of a vibration-suppressing cylinder and that of a piston connected to a piston rod and moving back and forth inside the cylinder in a dashpot for motor vehicles. The sensor consist... | 09/19/1995 |
