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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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 OUT 2 of a second logical operation unit 26 b comes to...
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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...
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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...
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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...
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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...
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7403143 |
Optical quantizing unit and optical A/D converter
An optical quantizing unit includes an optical divider dividing 1 st optical pulses to be quantized and sending the divided 1 st optical pulses into a plurality of paths; a plurality of optical...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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7329858 |
Optical encoder and electronic equipment having same
An optical encoder includes a mobile object having a plurality of aligned slits, a light-emitting portion for emitting light toward the mobile object, and a light-receiving portion 103 for...
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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...
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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...
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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...
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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...
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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...
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7263172 |
X-ray apparatus having means for determining movable component positions
The invention relates to an apparatus, notably an X-ray apparatus, which comprises two components which are displaceable relative to one another. A position visualization unit is arranged on one...
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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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7256712 |
Encoder having a signal elimination unit
An encoder includes an encoder scale having a predetermined cyclic pattern, and at least one detection unit configured to detect a cyclic displacement according to movement of the encoder scale....
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7245233 |
Light receiving device and encoding device
A light receiving device is disclosed that is able to reduce jitter and to improve detection resolution. The light receiving device has plural light receiving elements each having a rectangular...
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7233261 |
Microwave frequency electro-optical beam deflector and analog to digital conversion
A microwave frequency deflection cell analog to digital converter is provided. The phase velocity of an optical wave is effectively reduced to that of a microwave frequency electro-magnetic signal...
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7231293 |
Method and assembly for determining a route
The present invention provides a method and assembly which determines a route using a computer system, a map and a user operated sensing device. The map shows a geographic area and includes coded...
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7227125 |
Encoder device
An encoder device includes a first array that includes first through fourth photodiodes adjacent to each other in an X direction, each having a length of X 1 ; a second array that includes fifth...
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7223963 |
Optical encoder
An optical encoder comprising a light-receiving part having photodiodes equal in number to the common multiplier of a number of slits facing the light-receiving part and a number of movement...
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7215112 |
Non-contact linear absolute position sensor
A non-contact linear absolute position sensor includes a first magnetic encoder having n+1 pole pairs, a second magnetic encoder having n pole pairs and located and aligned with the first magnetic...
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7214930 |
Pulse generator
A pulse generator which can be used for a printer, for example an ink jet printer, to provide adjustable pulses per unit displacement or speed has a linearly or rotatably displaceable first plate...
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7199355 |
Methods and apparatuses for the exact determination of an angle of rotation
In a method according to the invention for the accurate determination of an angle of rotation (w) about an axis (a), at least a part of a plurality of pattern elements ( 5, ..., 13 ) arranged...
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7199354 |
Detector array for optical encoders
A photodiode detector array for optical encoders includes a plurality of photodiodes, each of the photodiodes providing a scanning signal with a defined phase relationship to a scale when the...
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7196320 |
Fiber optic encoder for position sensing
A passive all fiber optic encoder that will be able to determine speed, position, and direction of movement of a movable object. The all passive encoder utilizes no electronics within the sensing...
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7193534 |
Apparatus and method for improving resolution of optical encoder
The invention provides an interpolation apparatus for improving the resolution of an optical encoder. The optical encoder outputs an encoding signal, and the encoding signal corresponds to a first...
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7190752 |
Data signal quality evaluation method and apparatus using high speed sampling
The scale and complexity of an apparatus is reduced by omitting a clock extraction section. The apparatus includes: a sampling pulse train generation device which generates an optical or electrical...
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7183536 |
Motion encoder
A motion encoder for use with a rotating key. The motion encoder allows the direction of rotation to be determined by providing elements having different characteristics for the transmission of a...
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7180430 |
Low-cost absolute linear optical encoder
A Low-Cost Absolute Linear Optical Encoder (“LALOE”) for determining the absolute position of a read-head within the LALOE relative to a codestrip is disclosed. The LALOE may include an emitter...
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7166833 |
Fiber optic remote reading encoder
A system and method for determining the absolute position of a linear or rotary actuator. A code plate having a series of digital words thereon is associated with the linear or rotary actuator....
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7146072 |
All optical phase insensitive code responsive and code separator devices apparatus and method
Exemplary embodiments of some aspects of the invention provide an optical decoding device including: a splitting device having first, second, and third, terminals; a nonlinear element; and an...
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7132647 |
Optical encoder
A main scale of an optical displacement measuring apparatus has slits arranged on it at regular intervals, a part of which is a missing slit that does not allow light to pass through used for...
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