Class 341/114 - Control system

Subclass of Class 341 - Coded data generation or conversion
Definition: Subject matter where there is a comparison between the desired
No. of patents: 29
Last issue date: 07/01/2008

Number	Title	Issue Date
7394236	Digital double-loop output voltage regulation A switched mode voltage regulator has a digital control system that includes dual digital control loops. The voltage regulator comprises at least one power switch adapted to convey power between respective input and output terminals of the voltage regulator and a di...	07/01/2008
7388527	Method of detecting abnormality of R/D converter To achieve miniaturization of a resolver apparatus as a system, to obtain the resolver apparatus at a low cost, and to improve failsafe by installing an abnormality detection unit and a self-diagnosis circuit within the R/D converter. According to the present invent...	06/17/2008
7321627	Method and system for providing zero detect and auto-mute Provided is a system and method for muting zero level pulse code modulated (PCM) samples. PCM samples are received as inputs to a digital to analog converter (DAC) including a PCM input module and a mapping module. The method includes monitoring a level of the PCM s...	01/22/2008
7274318	Control module, related control chip and identifying method thereof A control module includes a plurality of switching elements, a control chip, and an identification unit. The switching elements are connected to a power terminal through a corresponding resistor each, wherein the resistances of corresponding resistors or equivalent ...	09/25/2007
7268710	Logic device for the transformation of the output of the RDC into series A-B pulses A logic device for the transformation of the output of the RDC into series A-B pulses according to the present invention comprises: a chip with its two minimal bits (LSB-LSB-1) simulating as the clock source of A-B pulses, a signal-processing pin (BUSY) which...	09/11/2007
7141956	Digital output voltage regulation circuit having first control loop for high speed and second control loop for high accuracy A switched mode voltage regulator has a digital control system that includes dual digital control loops. The voltage regulator comprises at least one power switch adapted to convey power between respective input and output terminals of the voltage regulator and a di...	11/28/2006
7061411	Device and method for enhancing resolution of digital encoder The present invention provides a device and a method for enhancing the resolution of the digital signal of a digital encoder. The device comprises a digital encoder which outputs a fundamental position signal. Beside, the device comprises a selected integral circuit...	06/13/2006
6968117	Multi-image reproducing and recording apparatus with appended information In order to select and designate the appropriate identification information when the multi image representing picture is recorded as a multi image onto a recording medium, a reproducing circuit 20 reproduces a recorded image at a designated track, its reprodu...	11/22/2005
6954158	Process for automatically generating several electrical pulses using numeric default values, in particular for simulating an incremental encoder The invention relates to a method for automatically generating several electrical pulses using numeric default values, in particular for simulating an incremental encoder for a sequential, digital counting of linear or angular displacement values using said pulses. ...	10/11/2005
6774683	Control loop for minimal tailnode excursion of differential switches A system and method are provided for controlling the on/off timing relationship between two transistors in a differential that are connected at a tail node to a common current generator. The on/off timing relationship is controlled by on/off signals that control the...	08/10/2004
6674384	Process and device for making secure the processing of safety signals, on lifting apparatus The invention makes secure the processing of a signal (Se) delivered by a sensor (2) of resistive analog type, in a safety device, the signal (Se) being converted into a digital signal (n) in an analog/digital converter (4) of resolution (R). A digital si...	01/06/2004
6369738	Time domain/frequency domain data converter with data ready feature A time domain data converter with output frequency domain conversion. A data conversion circuit is operable to receive a signal in the time domain and provide an output in the frequency domain. It includes a data converter for converting data from an anal...	04/09/2002
6304832	Symmetric sampling The invention provides a method of sampling precision measurement signals to achieve an accurate measurement position at a particular measurement time, such that the measurement accuracy is unaffected by the velocity of motion. The method involves samplin...	10/16/2001
5973620	Control device and process for testing position dependent signals of a position measuring device In the installation of a scanner of a position measuring apparatus, it is required that parameters such as amplitude and phase position of analog signals generated by a scanner be tested so that the scanner can be correctly installed. For this purpose, a ...	10/26/1999
5173696	Control circuitry using electronic emulation of a synchro signal for accurate control of position and rate of rotation for shafts The invention herein disclosed is a digital circuit which emulates a synchro signal in a synchro-resolver follower system for precise control of shaft position and rotation at very low rotational rates. The subject invention replaces the synchro and drive...	12/22/1992
5079549	Digital resolver with a synchronous multiple count generation A digital resolver is provided that accepts an analog representation of an angular or linear displacement within a reticle modulation cycle of a rotatable or translatable member, and provides a highly accurate output digital representation of the displace...	01/07/1992
4992716	Motor control with digital feedback A motor feedback control system which in addition to a quantized digital position feedback value, uses a feedback signal which represents the error between the actual motor position and the quantized digital position. The error function is combined with t...	02/12/1991
4890105	Step data processor for 180X and 90X compass synchro data A compass data converter converts 180X and 90X synchro compass data to 1/6 degree step data. 180X synchro data is converted by utilizing a 360X to 1/6 degree step data converter that divides the synchro rotation into six 60° sectors providing a digital s...	12/26/1989
4857926	Phase-responsive angular tracking device An apparatus for generating phase modulated angular positional signals in digital form. A phase tracking loop receives a phase modulated signal from the rotor of a resolver whose stator windings are excited in quadrature. The phase output of the resolver ...	08/15/1989
4401932	Synchro-to-step data converter A synchro-to-step data converter for coupling one of a plurality of different synchro transmitters to one of a plurality of different step motors. The three wire output data of a synchro transmitter is demodulated into a three bit binary step data code an...	08/30/1983
4357566	Transducer system with velocity signal generation To generate a signal having at all times an amplitude directly proportional to the velocity of relatively moving members, a plurality of phase displaced position indicative signals are first generated. A pair of the position signals that are phase displac...	11/02/1982
4321684	Digital resolver A digital resolver incorporates an adder for periodically and repetitively calculating the sum of two operands, one of which is increasing and the other decreasing at a rate determined by the excitation frequency of a resolver. The phase of the one of the...	03/23/1982
4270120	Solid state synchro torque receiver driver A solid state synchro torque receiver driver that uses unfiltered AC as the power source and push-pull regulating transistors operating in the linear mode to drive the torque receiver stator loads. A feedback amplifier compares the push-pull outputted AC ...	05/26/1981
4204257	Numerical control resolver position measuring device An absolute resolver position measuring device for a numerical control apparatus that controls a machine having a plurality of movable members. A resolver is operatively connected to each movable member such that the rotor of each resolver rotates as the ...	05/20/1980
4138729	Apparatus for determining defining quantities of a planar vector A vector analyzer which serves for determining defining quantities of a planar vector in which the output of a digital counter is fed, via sine and cosine function generators, to a vector rotator addressed by the component voltages of an input vector and ...	02/06/1979
4109189	Phase-sensitive transducer apparatus with improved signal offset means A phase-sensitive transducer apparatus comprises first and second relatively movable members, the first relatively movable member having a plurality of windings and the second relatively movable member having a winding. Means are included for applying a f...	08/22/1978
4084083	Multi-axis electronic motion generator Apparatus for generating synchronized multi-axis intermittent motion utilizing electronic encoding, memory and a servo controlled positioning system. A plurality of mechanically independent slave shafts are positioned in response to the position of a rota...	04/11/1978
4067007	Adaptive compass drive system A radar system having an adaptive compass drive capable of operation over a wide variety of compass outputs and supply voltages and frequencies. For compass outputs in the form of multi-phased analog signals, a digital phase detector converts the signals ...	01/03/1978
4021714	Servo system employing a tracking digital angle encoder An absolute positioning servo for positioning a shaft in response to a digital command input which utilizes a resolver, for providing an analog position indication of the shaft, an analog to digital converter, which provides a digital indication of the sh...	05/03/1977

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Class 341/114 - Control system