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Match Document Document Title
8093546 Out-of-round coder  
An angle sensor for detecting an out-of-round condition includes a disc supporting angle coder rigidly attached to a rotating shaft and at least one fixed optical system including a coherent light...
8068040 Optical encoder with integrated monitor  
A sensor head for sensing light modulated by a moveable member, such as a code wheel or code strip, in an optical encoder. The sensor head has at least one monitor optical sensor and a primary...
8044340 Encoder and light receiving device for encoder  
An encoder is provided in which the absolute angle can be detected with high accuracy even when the irradiated position of light to be detected with respect to a scale is displaced from a...
8044339 Intensity-based optical encoder using digital diffractive optic regions  
An optical encoder and method for measuring displacement information using an optical encoder uses an encoder member with multiple digital diffractive optic regions to optically diffract an...
8039786 Absolute position encoder obtains signals corresponding to individual imaging ranges of imaging optical systems  
In an absolute position detection type photoelectric encoder devised so as to detect a pseudorandom pattern disposed on a main scale by means of a plurality of imaging optical systems, assembling...
8020310 Measuring element comprising a track used as a material measure and corresponding measurement method carried out by means of such a measuring element  
A measuring element with a circular or linear track that encompasses a material measure and a number of sensors for scanning the track is disclosed. At least two scanning heads having the sensors...
7982175 Miniaturized single track optical encoder system with integrated index channel(s)  
Disclosed are various embodiments of a reflective optical encoder system having at least three channels—two data channels and at least one index channel. The various configurations of reflective o...
7916045 Scale for photoelectric encoder  
A scale for a photoelectric encoder effectively protects the base of the scale from corrosion, rust, and flaws. The scale includes a base, a light-absorbing layer including a DLC layer formed on at...
7903336 Optical metrological scale and laser-based manufacturing method therefor  
A reflective metrological scale has a metal tape substrate and a scale pattern of elongated side-by-side marks surrounded by reflective surface areas of the substrate. Each mark has a furrowed...
7888627 Optical encoder having a stray-light reduction element for reducing strat-light  
An optical encoder includes a scale which is installed on one member of which, displacement is detected, and a detecting head which is installed on the other member which moves relatively with...
7874751 Mobile device with multiple optical sensing pathways  
A mobile device that has a media path for receiving a sheet of print medium and a media drive mechanism for directing the print medium along the media path. An optical sensor in the device is...
7858922 Position-measuring device  
A position-measuring device includes a scanning unit and a measuring graduation that is displaceable thereto in at least one measuring direction. The measuring graduation includes two...
7804427 Device and method for automatic reset of encoder  
An encoder reset device and method that allows for an encoder to be automatically reset without operator intervention. A reset device of the present invention includes a microprocessor-based...
7732757 Origin detection method for optical encoder  
An optical encoder equipped with an origin detection apparatus has a scale provided with an optical grating, a plurality of light receiving elements that is provided in association with the pitch...
7714273 Position-measuring device  
A position-measuring device for generating a reference-pulse signal at at least one reference position includes a scanning unit and also a reflection-measuring graduation displaceable relative...
7705751 Encoder  
An encoder includes an encoder scale having an optical pattern of a prescribed cycle, and an encoder head configured to be displaced relative to the encoder scale. The encoder head includes a...
7687766 Out-of-round coder  
Device for detection of out-of-round on an angle sensor including a disc supporting angle coding means rigidly attached to a rotating shaft and at least one fixed optical system including a...
7679533 Photodiode array for an optical encoder, photodiode detection system, and optical encoder  
A photodiode detector array for an optical encoder includes a sequence of photodiodes having a pitch between adjacent photodiodes that alternates between a first pitch and a second pitch, the...
7667188 Position measuring device including a scale having an integrated reference marking  
A scale and a position-measuring device include the shifting of reference markings in graduation tracks, offset transversely with respect to the measuring direction, by fractions of the interval of...
7646314 Encoder for shaft device comprising one such encoder and production method thereof  
The invention relates to displacement encoder for a movable shaft, comprising a sleeve (2) which is intended to be fixed in rotation to the shaft (3) and an encoding element (4) which is made from...
7619208 Photoelectric encoder, scale and method of manufacturing scale  
A photoelectric encoder includes: a scale having a grating formed thereon along a measuring axis; a light source operative to emit light to the scale so as to form a light spot on the grating; and...
7572077 Mobile device having dual optical sensing pathways  
A mobile device is provided having a printhead for printing onto a print medium, a media path for directing the print medium past the printhead for printing, an optical sensor, a first optical...
7569808 Rotary encoder, belt conveyance apparatus, and image forming apparatus  
A rotary encoder includes a shaft which serves as a rotation axis, a disc supporting plate fixed to the shaft, an encoder disc having a center hole, a first side face, and a second side face...
7554079 Signal conditioning for an optical encoder  
An encoder with signal conditioning of an emitter drive signal is described. In one embodiment, the encoder includes a peak comparator, a pulse generator, a threshold comparator, and digital...
7544925 Encoder including rotating member, light source device and photodetecting device including a scale having photodetecting elements arranged thereon  
There is provided an encoder in which the absolute angle can be detected with high accuracy even when the irradiated position of light to be detected with respect to a scale is displaced from a...
7535382 High speed quadrature counter  
A high speed quadrature counter for use with a displacement measuring device is disclosed. The counter provides high speed counting by partitioning the tracking counter into a small fast tracking...
7508323 Rotation-angle detecting apparatus  
A rotation-angle detecting apparatus detects a rotation angle of a rotating disc having radial markings, includes a plurality of detectors arranged at opposite sides of the axis of rotation of the...
7495583 Flat-top reflection-based optical encoders  
A reflection-based optical encoding apparatus for the detection of position and/or motion of a mechanical device includes an encoding medium having at least a first reflective portion, and an...
7466884 Photonic-interconnect systems for reading data from memory cells and writing data to memory integrated circuits  
Various embodiments of the present invention are related to photonic-interconnect systems for reading data from and writing data to memory cells of memory chips at approximately the same time. In...
7456386 Averaging signals  
A method for compensating for encoder wheel eccentricity includes routing encoding module signals to a signal logic module when an encoder wheel is not at slew, averaging the encoding module...
7439489 Photoelectric encoder and electronic equipment using the same  
In the photoelectric encoder of the invention, as a light passing zone PZ of a movable object 21 travels by one pitch P, an output signal OUT2 of a second logical operation unit 26b comes to be...
7425697 Origin detection method for optical encoder  
An optical encoder equipped with an origin detection apparatus has a scale provided with an optical grating, a plurality of light receiving elements that is provided in association with the pitch...
7417563 Process to determine the absolute angular position of a motor vehicle steering wheel  
A method for determining the absolute value of a rotational angle includes imaging a continuous segment of a code track of a code carrier on a sensor array such that the sensor array generates a...
7414238 Optical encoder device for small-sized motor and method of producing the same  
An optical encoder device for a small-sized motor has a code wheel attached to a motor shaft which extends to the exterior of the motor through a bearing accommodated in a bearing-retaining section...
7412116 Optical device for simultaneously generating and processing optical codes  
The invention relates to an optical device, apt to generate and process optical codes at least one wavelength, comprising P inputs s, with 1≦s≦P, and P≧1, and N outputs k, with 1≦k≦N and N≧1, char...
7403143 Optical quantizing unit and optical A/D converter  
An optical quantizing unit includes an optical divider dividing 1st optical pulses to be quantized and sending the divided 1st optical pulses into a plurality of paths; a plurality of optical...
7400269 Coding element with integrated limit switch  
An optical encoder. The optical encoder includes a coding element, an emitter, and a detector. The coding element has a track with a track pattern. The track pattern includes a plurality of...
7397394 Process to determine the absolute angular position of a motor vehicle steering wheel  
A method for determining the absolute value of a rotational angle includes imaging a continuous segment of a code track of a code carrier on a sensor array such that the sensor array generates a...
7391012 Apparatus for detecting rotational angle of rotational element and detecting method thereof  
An apparatus (100) for detecting rotational angle of a rotational element (110), includes a light emitting element (1) and an image detecting element (3). The light emitting element is disposed on...
7358865 Optical encoder and apparatus using optical encoder  
An optical encoder includes a cylindrical reflective scale, a point light source for irradiating the reflective scale, and light-receiving elements for receiving the light beams reflected by the...
7348543 Optical encoder with hollow light guide for indicating the angular position of a rotary shaft  
An optical encoder assembly and a method for measuring a rotation angle in which optical beams are spread over the circumference of a rotating optical disk by means of optical guides (OG). In the...
7348546 Position measuring system with a scanning unit having a reference pulse signal detection unit  
A position measuring system having a scale that includes an incremental graduation track, which extends in a measuring direction, the incremental graduation track having a periodic arrangement of...
7348547 Position detecting apparatus and image processing apparatus provided with the same  
There is provided a position detecting apparatus that has a high ability of detecting a correct position even if there is mechanical play in a moving mechanical member, a position of which is...
7345597 Process to determine the absolute angular position of a motor vehicle steering wheel  
A method for determining absolute value of a rotational angle includes imaging a segment of a code track onto a sensor such that the sensor generates a corresponding output signal. The track...
7305435 Internet access via smartphone camera  
A mobile device, system, method, and software for communicating with the internet utilizing a written universal resource locator (URL). A camera unit is used to receive a raw visual light image...
7289042 Reader for a scale marking  
The invention relates to a reference mark detector for use with a metrological scale or encoder (10) having a patterned reference mark rm movable relative to the reference mark detector. The...
7284921 Mobile device with first and second optical pathways  
A mobile device including: a printhead for printing onto a print medium, the print medium including coded data; a media path for directing the print medium past the printhead for printing; an...
7265339 Encoder interpolation apparatus  
An interpolating detector for generating a position signal indicating a change in the relative position of a code pattern that includes alternating light and dark stripes is disclosed. The...
7265338 Photoelectric encoder using an incoherent semiconductor light source  
A photoelectric encoder is provided, which emits light from a light source to a main scale and an index scale that can relatively move with respect to each other and obtains a light-receiving...
7262714 Interpolating encoder utilizing a frequency multiplier  
An encoder having a detector and an optical system that generates an image of a code strip on the detector is disclosed. The image includes a plurality of light and dark stripes, the detector...
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