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| Number | Title | Issue Date |
| 7437263 | Method and apparatus for controlling the machining of mechanical pieces A method and a relevant apparatus for controlling the machining of a piece (18,38) rotating in a numerical control machine tool (33) includes the steps of detecting instantaneous values (V(i)) indicative of the dimensions of the piece during the machin... | 10/14/2008 |
| 7418361 | Method of correcting speed of encoder and apparatus therefor A method of correcting the speed of an encoder and an apparatus therefor are provided. The method includes the steps of detecting an electrical signal corresponding to a driving speed of a motor, calculating driving speed values of the motor in sections of the elect... | 08/26/2008 |
| RE40473 | Dynamic performance adjustment of computation means A dynamic performance circuit adjustment system and method that flexibly adjusts the performance of a logic circuit. The dynamic performance circuit adjustment system and method facilitates flexible power conservation. In one exemplary implementation, a dynamic perf... | 08/26/2008 |
| 7418362 | Method and device for determining wheel force A method and device for determining force exerted on a rolling vehicle wheel. Firstly, data on a relationship between a force exerted on a vehicle wheel and a physical parameter such as strain of the radius part of the wheel at predetermined measuring positions are ... | 08/26/2008 |
| 7248991 | Method and device for detecting a rotational speed, especially the rotational speed of the wheel of a vehicle The invention relates to a method and an apparatus for measuring a rotational speed, in particular a rotational speed of a wheel of a motor vehicle, by means of a speed sensor, wherein the speed sensor produces an output signal characterizing the actual rotational s... | 07/24/2007 |
| 7100435 | Tire pressure gauge A portable tire pressure gauge measures a value of tire pressure. The gauge may display the measured value digitally and may output the measured value aurally. The tire pressure gauge may also aurally output a verbal message warning the operator if the measured valu... | 09/05/2006 |
| 7098652 | Analytical circuit for an inductive sensor An analytical circuit for an inductive electromagnetic sensor with external excitation (1) generates an output signal which is transformed to give an output signal (out), by means of transformation to a reference voltage (Vref) in an inverting low-pass filter... | 08/29/2006 |
| 7058537 | Method and device for detecting a rotational speed comprising an estimation of a measured value at low rotational speeds An apparatus and a method with which a more-precise indication of an rpm is possible even if a position signal continues to be absent. To that end, a counter state of a counter is evaluated and is set to zero at each position signal. If the expected position signal ... | 06/06/2006 |
| 7049944 | Bicycle display with changing color attributes A bicycle display apparatus comprises a display unit and a color changing mechanism. The display unit optically displays information corresponding to the characteristic of the bicycling environment, and it includes a background light or a photoemission element that ... | 05/23/2006 |
| 7031852 | Apparatus and method for detecting abnormality of a vibration-type angular velocity sensor, abnormality detecting program, and a related vehicle control system An acceleration sensor, installed together with an angular velocity sensor in the same casing, detects the acceleration induced by the external vibration. Its detection signal Vs is supplied to first and second band-pass filters to extract a driving system resonance... | 04/18/2006 |
| 6959234 | Process for monitoring the condition of motor vehicle wheels A process and device for monitoring the state of a wheel of a motor vehicle in which an output signal of a sensor is converted into an essentially rectangular pulse signal. A respective duration of the pulse is measured; and an especially weighted average between th... | 10/25/2005 |
| 6885923 | Speed signal variance detection fault system and method A method and a system is provided, useable in electrical control sensors for shaft speed signal frequency change rate tests, detecting intermittent or “in-range”failures. The method estimates a short-term variance of the measured signal or signal rate of change,... | 04/26/2005 |
| 6804623 | Method and apparatus for detecting decrease in tire air-pressure, and program for judging decompression of tire A method for detecting decrease in tire air-pressure in which decrease in internal pressure of a tire is detected on the basis of rotational information obtained from tires attached to a vehicle. The method includes the steps of; detecting and storing rotational inf... | 10/12/2004 |
| 6757631 | Method of and apparatus for detecting angular velocity, method of and apparatus for detecting angle, navigation system, program storage device, and computer data signal embodied in carrier wave A method of detecting an angle is provided with processes of: setting a bias voltage, as a standard voltage, which is an output voltage outputted from an angular velocity sensor (12) under a predetermined condition; and calculating the angle on the basis of a... | 06/29/2004 |
| 6633828 | Speed signal variance detection fault system and method A method and a system is provided, useable in electrical control sensors for shaft speed signal frequency change rate tests, detecting intermittent or "in-range" failures. The method estimates a short-term variance (standard deviation) of the measured sig... | 10/14/2003 |
| 6615144 | Tire uniformity prediction using curve fitting Methods and apparatus for predicting tire uniformity, preferably a harmonic component of force variation (radial, lateral, or tangential) for a production tire operating at a high speed, and also method and apparatus for manufacturing tires and controllin... | 09/02/2003 |
| 6601011 | Apparatus for measuring angular velocity variation rate of rotary axle In an apparatus for measuring an angular velocity variation rate of a rotary axle, an approximately circular disc shaped plate is attached approximately concentrically around the rotary axle, in addition to a first pair of velocity pulse generators, each ... | 07/29/2003 |
| 6490531 | Optimized method for determining physical parameters of a sample subjected to centrifugation A method for faster determination of physical parameters (capillary pressure curves and relative permeabilities for example) of a geologic sample initially saturated with a first fluid placed in a vessel and subjected to centrifugation in the presence of ... | 12/03/2002 |
| 6470263 | Average vehicle speed calculation device In a navigation system for vehicles, a type of road a vehicle travels is determined based on a present position of a vehicle and road data, and a change in the type of road is determined. The road type is determined based on the type of link the vehicle t... | 10/22/2002 |
| 6442502 | System for detecting rotating speed An arrangement for sensing the rotational speeds of a wheel or any other rotating member includes a sensor module with a sensor element, a controllable current source with a modulator and a signal conditioning and evaluating circuit. The modulator control... | 08/27/2002 |
| 6338027 | Canopy modification using computer modelling A method and system for determining canopy coverage to a golf green to assist in increasing sunlight exposure of the green. The system allows users to enter data regarding the golf green, surrounding foliage, and other topographical and man-made features ... | 01/08/2002 |
| 5899963 | System and method for measuring movement of objects A device that measures the distance traveled, speed, and height jumped of a moving object or a person while running or walking. Accelerometers and rotational sensors are placed in the object or in the sole of one shoe, or in a wrist watch or the waist of ... | 05/04/1999 |
| 5737245 | Distance measurement device A distance measurement device includes a distance measurement device for measuring a distance to an object, a processor for determining which respective measurement zone a measurement result of the distance measurement device is in, from a plurality of me... | 04/07/1998 |
| 5241480 | Method and apparatus for detecting combustion conditions in multicylinder internal combustion engine based upon engine speed evaluation A method and apparatus for detecting the quality of combustion in each cylinder of a multi-cylinder internal combustion engine is disclosed. The invention determines a combustion stroke of each cylinder by sensors and detects the rotational speed of the e... | 08/31/1993 |
| 5218291 | Meter and meter driving system with indication fluctuation suppression and enhancement A meter driving system receives pulse signals from a sensor, counting frequencies or periods of the input signals. The counted results are weight-averaged to determine an output value and a value to be indicated. In a weight-averaging process, a weight is... | 06/08/1993 |
| 5146162 | Engine speed measuring device with plural counters for averaging angular velocity In the revolution frequency indication apparatus in which the revolution frequency of a rotating body is measured and indicated according to a sensor pulse obtained from a revolution sensor mounted on said rotating body or its surrounding, a revolution fr... | 09/08/1992 |
| 5132909 | Apparatus for diagnosing individual cylinder performance by estimated instantaneous engine speeds An engine equipped with a low resolution crankshaft rotation encoder is diagnosed by measuring the average speeds for each encoder period, deriving estimated instantaneous speeds for top dead center (TDC) positions for each cylinder and for the points mid... | 07/21/1992 |
| 5121342 | Apparatus for analyzing communication networks A handheld, battery operated network testing device uses disk loaded software, programmable gate arrays, and digital signal processing to selectively configure the device for a full range of analog and digital testing modes in a variety of communications ... | 06/09/1992 |
| 5058145 | System for determining the position of movable machine parts A system for determining the position of movable machine parts including an incremental pulse generator for generating angular-speed pulses includes a computer. At least one counting circuit via which the incremental pulse generator is connected to the co... | 10/15/1991 |
| 4982330 | Arrangement for detecting input signals of a control device in an internal combustion engine An arrangement for the detection of speed signals of a control device controlling the fuel feed in an internal combustion engine is suggested, in which an (inductive) pulse generator is used in connection with a tested sensing arrangement. The point in ti... | 01/01/1991 |
| 4977525 | Highly efficient method and apparatus for calculating rotational speed A process for maximizing the instruction processing efficiency of a digital computer for the purpose of calculating rotational speed wherein the calculation of speed is based upon speed signals generated by a tachometer. By (1) counting the quantity of th... | 12/11/1990 |
| 4885710 | Method and apparatus for low speed estimation A system and method determines the rotational speed of a rotating member by determining speed from signals having a frequency directly proportional to the rotational speed. The system provides for the estimation of rotational speed even if no speed signal... | 12/05/1989 |
| 4862395 | Data display instrument for a bicycle The data display instrument for a bicycle comprises an LCD field having an analog scale field to display the momentary travelling speed and an analog scale field to display the pedalling speed. The scale fields are automatically switchable to two measurin... | 08/29/1989 |
| 4799178 | Method and apparatus for detecting rotational speed A system and method for determining the rotational speed of a rotating member is described that determines speed from signals having a frequency directly proportional to the rotational speed. The speed signals are counted during each of successive samplin... | 01/17/1989 |
| 4748565 | Apparatus for detecting speed of vehicle with internal combustion engine In a speed detecting apparatus of a vehicle with an internal combustion engine whose rotational output is derived through a transmission, the apparatus comprises a circuit for calculating the gear ratio set in the transmission on the basis of the engine s... | 05/31/1988 |
| 4670852 | Wheel speed and acceleration detection immune to disturbance A pulse signal is generated by a wheel speed sensor with a frequency proportional to the speed of rotation of a vehicle wheel, the pulse signal comprising a plurality of frames each having a series of a predetermined number of pulses which are tended to b... | 06/02/1987 |
| 4506339 | Method and apparatus for measuring and monitoring the rate of rotation of fast running machines An apparatus for measuring and monitoring the angular velocity of the shaft of a rotating machine. In this apparatus, a plurality of sensors is positioned adjacent the shaft of the rotating machine for generating sequential pulses with periods proportiona... | 03/19/1985 |
| 4281388 | Tachometer A tachometer for monitoring several functions on an implement, such as engine, shaft and ground speeds. A microprocessor receives a-c input signals which vary in frequency as the shaft or ground speeds change. A time window synchronized with a rising edge... | 07/28/1981 |
| 4179656 | Determination of average speed of rotation of a cyclically loaded shaft during periods of up to two minutes duration A method of determining average speed of a cyclically loaded rotating shaft, and an electronic tachometer for practicing the method. The revolutions of the shaft are counted electronically, a highly time-regular pulse stream is provided, and simultaneousl... | 12/18/1979 |
