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| Number | Title | Issue Date |
| 7830278 | Sensor arrangement for the precise detection of relative movements between an encoder and a sensor A sensor arrangement and a method for the precise detection of relative movements between an encoder and a sensor, including an encoder, which has an incremental scale having a plurality of scale subdivisions (λ), and a sensor which is magnetically coupled to the e... | 11/09/2010 |
| 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 setting for relays or similar may be achieved by means of a rotary encodin... | 11/03/2009 |
| 7463168 | Encoder Various methods and apparatus relating to an encoder are disclosed. ... | 12/09/2008 |
| 7460030 | System and method for encoder failure detection An encoder failure detector system and method for detecting failure of an encoder during time periods when a zero rotational speed is expected. For example, in one embodiment a test signal is applied during a period when a zero rotational speed is expected and a fai... | 12/02/2008 |
| 7435945 | Optical configuration for imaging-type optical encoders A displacement measuring device including a scale, and an optical readhead including an index pattern and a light receiving element is provided. A bright/dark pattern arising from a scale grating is detected by the readhead to measure displacement. In various embodi... | 10/14/2008 |
| 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 |
| 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 optically distinguishable sections. The plurality of optically distinguishab... | 07/15/2008 |
| 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 corresponding output signal. The code track has a light and dark transi... | 07/08/2008 |
| 7397393 | Encoder count error detection circuitry and encoder count error detection method To provide encoder count error detection circuitry and an encoder count error detection method capable of realizing a highly reliable encoder by providing detection of the count errors of count signals used to measure displacement, an encoder count error detection c... | 07/08/2008 |
| 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 reflective scale. The pitch of the reflective scale is set to an approp... | 04/15/2008 |
| 7352293 | Multi-mode encoder output generator Various apparatus and methods of a multi-mode encoder output generator are disclosed. ... | 04/01/2008 |
| 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 |
| 7331482 | Dispense pump with heated pump housing and heated material reservoir A heated dispense pump overcomes the limitations of conventional systems providing for reliable and efficient heating of the dispensed material in a system that is compact, lightweight, and accurate. A pump housing and cartridge body are formed of a thermally conduc... | 02/19/2008 |
| 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 receiving the light which has passed the mobile object. The light-rece... | 02/12/2008 |
| 7327753 | Communication of physical layer control parameters Systems and methods are provided for transferring physical layer control information from a central access point to individual subscriber units while maintaining transparency to higher layers. Adaptation of wireline MAC protocols to wireless applications is greatly ... | 02/05/2008 |
| 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 |
| 7280049 | Encoder runout error correction circuit A novel encoder system adapted for use in print architecture at least includes: a codewheel coupled to a rotating print architecture element; a first encoder sensor mounted at a first position relative to the periphery of the codewheel, the first encoder adapted to ... | 10/09/2007 |
| 7250596 | Circuit with an opto-electronic display unit A circuit provided with an optoelectronic display unit. For discrete display of the settings of a regulating/control unit, said circuit comprises at least one detection element for detecting the actuation of an object in order to modify the settings of the regulatin... | 07/31/2007 |
| 7248974 | Measuring instrument and method of measuring flows A measuring instrument whose measuring principle is based on an oscillator, for example an eddy counter, and in which there is arranged a sensor for recording a measured signal (S(t)), which can be supplied to an evaluation unit (2), characterized in that, fr... | 07/24/2007 |
| 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 |
| 7224139 | Servo driver and encoder signal processing IC A servo driver (3) includes: an input section (11) for input-specifying the type of an encoder (7) at the side of an actuator (2); a control section (13) for generating a control signal (12) according to the type input; and ... | 05/29/2007 |
| 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 detector array moves relative to the scale. A plurality of switching eleme... | 04/03/2007 |
| 7199727 | Electrostatic encoder and electrostatic displacement measuring method An electrostatic encoder comprises a movable element having electrodes and a stator having induction electrodes and potential detection electrodes. The electrostatic encoder further comprises a voltage driving circuit configured to apply a voltage to the induction e... | 04/03/2007 |
| 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 resolution. The interpolation apparatus comprises a comparing circuit... | 03/20/2007 |
| 7190145 | Method and apparatus for improving speed measurement quality in multi-pole machines A method and apparatus for improving speed measurement quality in systems having multi-pole machines is taught. The method compensates for pole misalignment by computing speed based upon moving average techniques. In one embodiment, a moving average speed averaged o... | 03/13/2007 |
| 7183537 | Rotary position sensor with offset beam generating element and elliptical detector array A rotary position sensor employs an offset beam forming optical element such as a tilted mirror or a diffraction grating. The axis of the light beam from a source can be parallel to the rotational axis or tilted at a predetermined angle. One or multiple spots of lig... | 02/27/2007 |
| 7178745 | Dispense tip with vented outlets In a fluid pump and cartridge assembly, a cartridge includes a material inlet port, a material outlet port, and a feed screw. The feed screw delivers fluid to be dispensed from the fluid inlet to the outlet port. The fluid inlet is preferably elongated in a directio... | 02/20/2007 |
| 7178412 | Encoder failure detection An encoder failure detector system and method for detecting failure of an encoder at near-zero rotational speeds. For example, in one embodiment a failure is indicated if a torque command exceeds a selected threshold for a selected period of time and no movement of ... | 02/20/2007 |
| 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. Each of the digital words consists of a plurality of bits, each bit cons... | 01/23/2007 |
| 7148647 | Numerical control device An analog amplifier performs control of a motor at the speed in proportion to a speed instruction (analog voltage) outputted from a numerical control device. The speed instruction (analog value) is converted into a digital value by an A/D converter and is then sent ... | 12/12/2006 |
| 7145127 | Optical encoding that utilizes total internal reflection A coding element such as a codewheel includes first and second surfaces that are configured with respect to each other and with respect to a light beam such that the light beam is reflected at the two surfaces using the optical phenomenon of total internal reflectio... | 12/05/2006 |
| 7136740 | Machine tool control apparatus The invention aims to reduce an error occurring due to the mounting condition of an acceleration sensor. In the case of a two-axis sensor, an angle θ is calculated from outputs (x′, y′) that the acceleration sensor produces when known accelerations (x, y) are a... | 11/14/2006 |
| 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 detecting the original point. An index scale has four sets of windows form... | 11/07/2006 |
| 7129858 | Encoding system An encoding system for determining position and position changes of a moving member has a sequence of encoder marks forming incremental patterns and at least one index pattern. Two subsequent incremental patterns are indicative of an incremental position-change of t... | 10/31/2006 |
| 7126109 | Encoder scale error compensation employing comparison among multiple detectors An encoder calculates position error values and applies compensation values to encoder position measurements in-situ. The encoder includes a scale and a multi-section detector for detecting a spatially periodic pattern, such as an optical interference pattern, produ... | 10/24/2006 |
| 7122750 | Dual display weight measuring apparatus A mechanical weighing scale having mechanical parts driving a pointer rotating around a fixed disc or dial having slots or holes formed therein. The mechanical pointer operates to provide an analog display of one's weight to the user. An optical sensor system is res... | 10/17/2006 |
| 7122785 | Rotation angle detection apparatus and resin rotary disk for the same A rotation information record surface of a rotary disk is disposed at an intermediate position between a fixing point of the rotary disk and a rotary shaft and a fixing position of a detection head, so that a stable gap can be obtained with a variation due to therma... | 10/17/2006 |
| 7119717 | Encoder output divider and R/D converter A Resolver/Digital (R/D) converter includes an encoder output divider having a DSP generating 14-bit encoded signals A2 and B2 from a timing analysis performed during the first period of 12-bit encoded signal A1. The DSP generates a selection si... | 10/10/2006 |
| 7116252 | Encoder and signal adjustment method for the same An encoder includes: a detector; an A/D converter for performing A/D conversion for a two-phase analog signal output from the detector; an error correction circuit for correcting an error of the two-phase analog signal; an interpolation circuit for performing interp... | 10/03/2006 |
