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8154427 Multiturn rotary encoder and method of operating a multiturn rotary encoder  
A multiturn rotary encoder includes: a single-turn unit, including a code carrier and a single-turn evaluation unit for processing single-turn position signals to form a single-turn code word; a...
8138468 Rotary disk eccentricity measurement method, rotary encoder, and image forming apparatus including the rotary encoder  
An eccentricity measurement method of measuring the eccentricity of a rotary disk of a rotary encoder includes forming, on the rotary disk, at least one first straight-line pattern group in a...
8110792 Absolute position length measurement type encoder  
An absolute position length measurement type encoder includes: a scale in which an ABS pattern based on a pseudorandom code is provided; a light-receiving element for receiving bright and dark...
8094323 Displacement encoder including phosphor illumination source  
A position sensing optical encoder includes an illumination source that operates by providing primary radiation having a first level of intensity uniformity to saturate at least a portion of a...
8069580 Measuring device for determining a position and/or a speed  
A measuring device for determining a position and/or a speed includes a scale having marks arranged at spacings from one another, and a scanning head, with the scale and the scanning head being...
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...
8022354 Absolute position length measurement type encoder  
The absolute position length measurement type encoder is provided with a scale for forming bright and dark patterns by the ABS pattern based on a pseudorandom code; an edge position detection...
7994470 Photoelectric encoder  
The present invention relates to a photoelectric encoder including a scale having a grating (incremental pattern) of a predetermined pitch formed thereon and a light source (light-emitting element)...
7982176 ***WITHDRAWN PATENT AS PER THE LATEST USPTO WITHDRAWN LIST***
Absolute position length measurement type encoder  
An absolute position length measurement type encoder includes: a scale in which an ABS pattern based on a pseudorandom code is provided; a light-receiving element for receiving bright and dark...
7969114 Motor driving system compatible with different types of encoders  
A system compatible for different types of signals relates to a motor includes a differential amplifier, a comparator, and a transmitting device. The differential amplifier is configured to receive...
7952065 Position detector and a detected element having a pattern for generating a position signal formed thereon  
As shown in FIG. 1, a position detector (10) includes: an object to be detected having a pattern (2) formed for generating a position signal; and a sensor (3) for detecting the position signal...
7907505 Code disk with a plurality of tracks having different patterns  
A code disk for a high-resolution encoder that can detect an absolute position and a method for manufacturing a mold to produce the code disk are provided. The code disk is formed by using...
7902493 Rotation angle transmitter and method of scanning a code disc of a rotation angle transmitter  
An optical rotation angle transmitter includes a code disc that has a digital coding and an analog coding. The digital coding has multiple tracks and is configured so as to be secure against error....
7825369 Displacement sensor, method for detecting the optimal reference position, and method for judging stability of detecting reference position of displacement sensor  
A displacement sensor which detects a positional displacement of a movable member, comprises a position signal generating section configured to generate a periodical signal in accordance with...
7825367 Rotary encoder  
[Problems to be Solved] To provide a rotary encoder capable of carrying out self-calibration for a horizontal encoder as well as a vertical encoder without requiring special equipment and simply...
7825368 Absolute position length-measurement type encoder  
An absolute position length-measurement type encoder includes a scale having an incremental track, an absolute track, and a reference position track. The incremental track has incremental patterns...
7820957 Optical encoder for detecting movement of a moving object and electronic equipment including the optical encoder  
This optical encoder includes a light emitting section and a plurality of light receiving elements placed so as to be aligned in one direction in an area where a light beam from the light emitting...
7820956 Optical position transducer systems and methods employing reflected illumination for limited rotation motor systems  
A position transducer system is disclosed for a limited rotation motor that includes an illumination source that directs illumination toward an illumination reflector that rotates with a rotor of...
7797127 Method for determining two pseudo-sinusoidal signals in quadrature  
A method for determining two pseudo-sinusoidal signals in quadrature from a pseudo-sinusoidal signal transmitted by an encoder is provided. The method using a sensor arranged within reading...
7763843 Optical navigation system for rotary control based non-contact controller  
The controller of the present invention includes an optical navigation system which is responsive to movement, velocity of position of a rotatable platter. The optical navigation system is...
7751058 Optical rotation counter  
Optical rotation counter associated with a rotary disc of an angle sensor provided with means for coding the angular position of the disc, including at least one fixed source of coherent light...
7732756 User navigation device with a code wheel and an encoder  
A user navigational apparatus. The user navigational apparatus includes a code wheel and an encoder. The code wheel is coupled to a dial. The code wheel includes a track of alternating reflective...
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...
7675026 Optical jog wheel with spiral coding element  
A user navigational apparatus. The user navigational apparatus includes a dial, a coding element, and an encoder. The coding element is coupled to a dial. The coding element includes a track of...
7663093 Absolute position encoder having a second incremental track integrated with the absolute track  
A scale has a first incremental track with first incremental patterns including first light and dark patterns formed at equal intervals in first periods, an absolute track with absolute patterns...
7619210 Encoder with a combined position and index track  
An optical encoder. The 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 optically...
7615737 High precision compact rotation angle absolute encoder  
An angle absolute encoder comprises a code rod encoded with code marks configured in segments, such that each successive segment has an increasing number of code marks, arranged at an angle to the...
7612689 Rotary encoding switch  
In one embodiment of the present invention, a rotary encoding switch is disclosed such as used in the function setting for relays or similar. In one embodiment, a particularly secure function...
7612331 Code disk with a plurality of tracks having different patterns  
A code disk for a high-resolution encoder that can detect an absolute position and a method for manufacturing a mold to produce the code disk are provided. The code disk is formed by using...
7612327 Optical encoder and electronic equipment having the same  
An optical encoder of the invention has an OR circuit 21 to which light reception signals A+, B+ are inputted, an OR circuit 22 to which light reception signals A−, B− are inputted, and an AND cir...
7608813 Scale track configuration for absolute optical encoder including a detector electronics with plurality of track detector portions  
An encoder configuration comprises an illumination portion, absolute scale pattern comprising absolute tracks, and a detector having a width dimension YDETABS. An absolute track pattern comprises...
7601948 Encoder device and alignment device for an encoder device  
An encoder device includes: an encoder base; a hub rotatably arranged in the encoder base and arranged to carry an encoder disk; and an alignment device arranged to urge the hub into a...
7601947 Encoder that optically detects positional information of a scale  
When an incident light is obliquely incident on an index scale, the optical path length of light A becomes longer than the optical path length of light B and an optical path length difference...
7589313 Method and apparatus for absolute optical encoders with reduced sensitivity to scale or disk mounting errors  
An absolute optical encoder apparatus for measuring an absolute position comprises an optical disk or scale element (100) having both incremental and absolute code tracks formed thereon. In the...
7554077 Encoder  
Embodiments of an encoder are disclosed.
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...
7534993 Position-measuring device  
A position-measuring device for measuring linear and/or angular positions includes at least two measuring standards on which at least one code track is applied, and includes a scanning unit for...
7511260 Encoder device for detecting movement  
An encoder device includes first through fourth photodiodes each having a rhombus shape and a length of X1 in an X direction, the photodiodes being disposed adjacent to each other in the X...
7432497 Absolute linear encoder  
An absolute linear encoder includes a plurality of absolute scales aligned in the detection direction with absolute calibrations, a plurality of detectors for detecting the calibrations on the...
7415173 Position sensor  
A hinge position sensor comprises first and second members connected together to provide a hinge, and an optical fiber or wave-guide connected between the first and second members to provide a...
7406772 Device for measuring the position, the path or the rotational angle of an object  
A device for measuring the position, path, or rotational angle of an object exhibits a dimensional gauge that is connected to the object and that can be scanned. The dimensional gauge assigns...
7391011 Optical encoder capable of detecting absolute position  
In two phases signals (A, B) outputted from a scale or a scale having a discontinuous portion provided in its incidental member to a light receiving portion, a region in which amplitudes of the two...
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...
7391010 Photoelectric encoder and electronic equipment with increased resolution  
The photoelectric encoder of the present invention has a light-emitting device and light-receiving devices arranged in one direction in a region that light from the light-emitting device can reach....
7385178 Reflective encoders with various emitter-detector configurations  
Optical encoders having one or more of a number of disclosed features are disclosed. The features of the optical encoder in accordance with the present invention include a symmetrical (for example,...
7348544 Optical encoder with discontinuous optical grating  
An optical encoder includes a light-emitting unit, a scale with a discontinuous part, and a plurality of light-receiving elements arranged in relationship to a pitch of the scale. In the optical...
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...
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