A rotation angle sensor includes a first and a second detection gears rotatable with a steering shaft, a first detector configured to detect a rotation angle of the first detection gear, a second detector configured to detect a rotation angle of the second detection gear, a processor configured to calculate a rotation angle of the steering shaft based on the rotation angles detected by the first and second detectors and a discriminator configured to discriminate whether the rotational angle of t...

A method for matching paint on a vehicle, having the steps of receiving in a central computer vehicle identifying information relating to a specific vehicle and a first set of paint color data from a portion of the body of the vehicle. The central computer includes a processor, an electronic storage device in which a database is stored. The database includes vehicle identifying information for a plurality of vehicles, paint color data associated with respective vehicle identifying information, a...

A method of compensating sensor data and a method of evaluating an interlock of an interlock system, in which an allowable variation between sensors varying depending on a driving time for a set of equipment, an RF time, the number of wafers, etc. is minimized, thereby enhancing detection reliability of a defective wafer.

There are many inventions described and illustrated herein. In one aspect, the present invention is directed to a technique of, and system for autonomously monitoring fabrication equipment, for example, integrated circuit fabrication equipment. In one embodiment of this aspect of the invention, the present invention is an autonomous monitoring device including one or more event sensors (for example, acceleration, motion, velocity and/or inertial sensing device(s)) to detect a predetermined event...

A system and method are provided for monitoring temperature within a specified integrated circuit. Usefully, the system comprises at least one oscillator device proximate to the integrated circuit for generating signal pulses at a frequency that varies as a function of the temperature adjacent to the oscillator device. The system further comprises a control unit for establishing sample acquisition periods of invariant time duration based on an time invariant reference clock. A sampling component...

The invention provides a method of apparatus for testing circuit boards which does not require any inner wide power plane so as to detect an open circuit defect and/or a short circuit defect in a conductor path network formed in the circuit board quickly and accurately. An apparatus for testing a circuit board according to the present invention includes a transmission unit (2) for transmitting electromagnetic (radio) wave signal by way of an antenna (1) to a circuit board (3) to be tested, a det...

The invention is directed to a system and method of observing actions performed on a computer and inferring relationships between objects based on information corresponding to the observed actions. Relationships between the objects may be determined based on usage information and a usage pattern may be generated if the usage information recurs a selected number of times in a predetermined period of time. When a usage pattern is generated, objects may be automatically launched, icons may be autom...

A non-invasive emitter-photodiode sensor which is able to provide a data-stream corresponding to the actual wavelength of light emitted thereby allowing calibration of the sensor signal processing equipment and resulting in accurate measurements over a wider variation in emitter wavelength ranges.

In a calibration method for a surface texture measuring instrument which measures a surface of a workpiece and includes an arm that is supported to be swingable around a base point thereof and is provided with a contact point at an end for scanning the workpiece surface, the calibration method includes a measurement step for measuring a calibration gauge of which cross section contains a part of a substantially perfect circle, an assignment step for assigning the detection results, which are obt...

Systems and methods for analyzing structural test data are disclosed. In one embodiment, a method includes applying a sequence of loads to a test article, receiving raw test data indicative of the applied loads from at least one sensor operatively associated with the test article, receiving predicted test data indicative of the predicted loads on the test article, filtering out invalid test data, cycle counting to pair loads in the test data, performing a first fatigue damage computation based o...