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| Number | Title | Issue Date |
| 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 including first light and dark patterns formed at equal intervals in ... | 11/02/2010 |
| 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 section may reach. The moving object includes a light-ON section and ... | 10/26/2010 |
| 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 responsive to rotation of the rotatable platter and is further responsive to ... | 07/27/2010 |
| 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 and non-reflective sections. The optical reflective encoder includes a... | 06/08/2010 |
| 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 alternating reflective and non-reflective sections, each having a substa... | 03/09/2010 |
| 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 representing absolute positions, and a second incremental track with se... | 02/16/2010 |
| 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 distinguishable sections, which include a plurality of position sections a... | 11/17/2009 |
| 7619209 | 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 distinguishable sections, which include a plurality of position sections a... | 11/17/2009 |
| 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 circuitry. The peak comparator outputs a peak comparator signal based on a ... | 06/30/2009 |
| 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 absolute scales, absolute position data generating portions of each scale... | 10/07/2008 |
| 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 communication link between the first and second members. A laser or LED i... | 08/19/2008 |
| 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 measured values to the object's positional range, and these measured value... | 08/05/2008 |
| 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 phases signals (A, B) are small corresponds to outputs when a reflec... | 06/24/2008 |
| 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 the rotational element to emit light. The... | 06/24/2008 |
| 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. When a moving object that alternately has a light-on portion that pr... | 06/24/2008 |
| 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, circular) emitter; baffle between the emitter and a detector; double... | 06/10/2008 |
| 7369960 | Device and method for detecting an angular position of a rotating object In detecting the time at which a rotating object passes a given angular position, a value range of an angular position sensor output signal which varies relatively rapidly with angular position acts as a trip threshold that, when exceeded, indicates the object has a... | 05/06/2008 |
| 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 graduation areas with different optical properties and a reference mar... | 03/25/2008 |
| 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 encoder, a light beam from the light-emitting unit reflects off the sca... | 03/25/2008 |
| 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 preferred embodiment the rotating optical disk has a pair of concentri... | 03/25/2008 |
| 7345273 | Integrated optical encoder A rotary switch including a control element, a light-emitting device arranged on a printed circuit board and configured to emit light, and at least two receivers arranged on the printed circuit board in correspondence with the light-emitting device and configured to... | 03/18/2008 |
| 7321113 | Precision material-handling robot employing high-resolution, compact absolute encoder An absolute encoder employs multiple sub-encoders of different resolutions and a linking algorithm for combining the sub-encoder outputs to form an accurate, high-resolution position estimate. The sub-encoders can utilize edge modulation of a main grating track, slo... | 01/22/2008 |
| 7312437 | Displacement sensor, method for detecting the optimal reference position, and method for judging stability of detecting the 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 movement of the movable member, a generating section of a signal for detec... | 12/25/2007 |
| 7304294 | Reflective encoder with reduced background noise An encoder having a code scale and an emitter detector module is disclosed. The code scale includes alternating reflective and opaque stripes. The emitter-detector module includes a light source that generates light and directs a portion of the generated light to th... | 12/04/2007 |
| 7304295 | Method and system of detecting eccentricity and up/down movement of a code wheel of an optical encoder set A system and method of measuring a rotational motion of a code wheel measures a rotational movement of the code wheel including an error component due to a non-rotational movement of the code wheel; measures the non-rotational movement of the code wheel; and produce... | 12/04/2007 |
| 7301333 | Angle position detection apparatus An angle position detection apparatus according to the present invention includes: a unipolar resolver and a multipolar resolver installed so that reluctance is changed in synchronization with the revolution of a direct motor drive; and a select switch is used to sw... | 11/27/2007 |
| 7276686 | Method and device for detecting the opening angle of the shutter of an adjustable rotating shutter in a film camera The invention relates to a method and a device for detecting the opening angle of the shutter (light or dark sector) of an adjustable rotating shutter (1) arranged in a film camera. Said shutter comprises a circular-segment-shaped or circular-sector shaped sh... | 10/02/2007 |
| 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 signal by interaction between the main scale and the index scale. The phot... | 09/04/2007 |
| 7265337 | Sensing apparatus Motion sensing apparatus including at least one light sensitive electronic component, said component responsive to at least a first and second incident light level each level creating in said light sensitive component a first state and a second state, wherein the ap... | 09/04/2007 |
| 7265336 | Encoder utilizing a reflective cylindrical surface An encoder for measuring the position of a rotating shaft is disclosed. The encoder includes a drum having an encoding track thereon and a detector module having a light source and a photodetector. The drum includes a cylindrical surface characterized by an axis, th... | 09/04/2007 |
| 7262909 | Illumination apparatus for an optical system and microscope An illumination apparatus for an optical system is disclosed, the illumination apparatus (1) encompassing a single light source (2) that emits broad-band light into an illumination beam path (2a). Placed after the light source (2) ... | 08/28/2007 |
| 7253395 | Absolute encoder employing concatenated, multi-bit, interpolated sub-encoders An absolute encoder employs multiple sub-encoders of different resolutions and a linking algorithm for combining the sub-encoder outputs to form an accurate, high-resolution position estimate. The sub-encoders can utilize edge modulation of a main grating track, slo... | 08/07/2007 |
| 7244929 | Encoder with absolute signal processing and incremental signal output and method of using such an encoder An encoder device for the determination of absolute angle or linear segments is described, with which the distance from the actual to the reference position is determined upon prompting and output via incremental signals. This encoder offers new functions for the in... | 07/17/2007 |
| 7233275 | Analog-to-digital converter with input signal range greater than supply voltage and extended dynamic range An analog-to-digital converter device capable of measuring inputs beyond a supply voltage including: an N bit analog-to-digital converter powered by a supply voltage and a reference voltage; a range resolution stage capable of receiving inputs at higher voltages tha... | 06/19/2007 |
| 7230727 | System for sensing an absolute position in two dimensions using a target pattern A system for sensing an absolute position in two dimensions includes a target having a two-dimensional target pattern. A sensor captures an image of a first subset of the target pattern. A controller generates a first image vector representing summations of rows of ... | 06/12/2007 |
| 7222543 | Modular encoder, method of producing a modular encoder, and system for measuring angular movement A modular encoder includes an encoder housing and a printed circuit board mounted in the encoder housing. The modular encoder also includes a mounting bracket adapted to electrically couple to the printed circuit board and a mounting screw adapted to couple the enco... | 05/29/2007 |
| 7214931 | Encoder for detecting movement of an object An encoder for stably detecting the amount of movement of an object. The encoder includes an LED for emitting light toward a rotor plate including slits. An optical sensor generates an ON signal when the amount of emitted light passing through the slits exceeds a th... | 05/08/2007 |
| 7202468 | Power transfer device with contactless optical encoder and color reflective surface An angular offset sensing device includes an optical encoder having a light generating element and a light sensor. An armature includes a reflective surface having a generally semicircular shape and a spectrum of color disposed thereon varying from a first end of th... | 04/10/2007 |
| 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 IR beam. These elements are arranged in a pattern that allows an IR be... | 02/27/2007 |
| 7183535 | Position-to-number electro-optical converter An optoelectronic code-to-position encoder intended for measuring linear and angular travels of an object contains a coordinate scale with raster and code tracks, a readout unit, which includes a lighter, a raster analyzing mask, light detectors of the raster track ... | 02/27/2007 |
