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| Number | Title | Issue Date |
| 7932753 | Potential converter circuit Embodiments of a potential converter circuit include a converter for converting a bipolar input signal to a unipolar output signal that only consumes current at a change of potential of the input signal. ... | 04/26/2011 |
| 7352245 | Auto-range current mirror circuit An auto-range current mirror circuit has a current sensing circuit, a front and rear stage current mirrors each has an adjustable amplifying rate. The current sensing circuit presets a threshold current and has an input current of the front stage current mirror. The... | 04/01/2008 |
| 7342393 | Multimeter with filtered measurement mode A multimeter with a filtered measurement mode. By pressing a single button or key, a low-pass filter is switched into the signal path to filter voltage spikes, noise, and switching transients from pulse-width modulated pulses, or lower frequency sinusoidal signals w... | 03/11/2008 |
| 7301380 | Delay locked loop having charge pump gain independent of operating frequency A delay looked loop (DLL) having a charge pump gain independent of the operating frequency of the DLL. A charge pump is disclosed for providing a charge to a capacitive element on a voltage controlled delay line, wherein the charge is independent of a control voltag... | 11/27/2007 |
| 7295042 | Buffer A switched capacitor buffer operating by the push-pull method is taught. The buffer may include a pull-up device and a pull-down device. A switched capacitor circuit may be used to control the pull-up device and the pull-down device to achieve accurate push-pull ope... | 11/13/2007 |
| 7282980 | Precision rectifier circuit for high-density, low-power implantable medical device A precision voltage rectifier comprises a source voltage input and a voltage reference. The rectifier comprises switching elements that, according to the sign of the source signal, change the connections to the inputs of a differential difference amplifier that is c... | 10/16/2007 |
| 7248994 | Digital method and apparatus for sensing position with a linear variable differential transformer An apparatus and method for determining a linear position from a linear variable differential transformer (LVDT) including a primary coil driven by an excitation signal, and two secondary coils coupled to two correlated signals. The method includes converting the co... | 07/24/2007 |
| 7215191 | Device for amplitude adjustment and rectification made with MOS technology An amplitude adjustment device such as an amplitude compression device and amplitude expansion device is basically configured by a PWM modulator, a demodulator and an amplitude detector. Herein, the PWM modulator effects pulse-width modulation on an input signal to ... | 05/08/2007 |
| 7199643 | Hot swappable pulse width modulation power supply circuits Hot swappable pulse width modulation power supply circuits preferably realized in integrated circuit form. The hot swap circuits provide for de-bouncing, controlled charging of the input capacitor of the power supply circuit and soft-start of the pulse width modulat... | 04/03/2007 |
| 7183834 | Method and apparatus for driving a power MOS device as a synchronous rectifier A synchronous rectifier comprising a MOSFET device, and a gate driver for driving the gate of the MOSFET device, the MOSFET device comprising first and second MOSFET transistors coupled with their drain-source paths in parallel to receive an alternating current wave... | 02/27/2007 |
| 7176755 | Transistor-based interface circuitry Among the embodiments of the present invention is an apparatus that includes a transistor, a servo device, and a current source. The servo device is operable to provide a common base mode of operation of the transistor by maintaining an approximately constant voltag... | 02/13/2007 |
| 7123075 | Current mirror compensation using channel length modulation A current compensation circuit for use with a current mirror circuit is disclosed. The current mirror circuit has a current path defined by a first programmable current mirror stage driving a first fanout current mirror stage. The first programmable current mirror s... | 10/17/2006 |
| 7106915 | Methods and devices for reading out an image sensor with reduced delay time between lines The present invention describes methods and devices for reading out an image sensor with reduced delay times between the reading out of different lines. The method of a first embodiment reads out each line of an image sensor in at least two overlapping sequences, wh... | 09/12/2006 |
| 7102424 | Reference ladder having improved feedback stability A reference ladder is configured to have improved feedback stability. The reference ladder includes a resistor ladder having a plurality of taps that produce a plurality of reference voltages. The resistor ladder is driven by a first current source at a first tap of... | 09/05/2006 |
| 7095256 | Low-power wide dynamic range envelope detector system and method An envelope detector system is disclosed for detecting an envelope in a system input signal. The envelope detector system includes an input node for receiving an input voltage signal, a transconducting amplifier for receiving the input voltage signal and producing a... | 08/22/2006 |
| 7088094 | Displacement sensing system and method A displacement sensing system and method addresses demanding requirements for high precision sensing of displacement of a shaft, for use typically in a linear electro-dynamic machine, having low failure rates over multi-year unattended operation in hostile environme... | 08/08/2006 |
| 7061230 | Circuit and method for measuring distances A circuit for measuring distances and which has at least two inputs (1, 2), at least one measuring coil (3), and at least one signal source, wherein at least two input signals (epos, eneg) are generated by means of the signal sour... | 06/13/2006 |
| 7061307 | Current mirror compensation circuit and method A current compensation circuit for use with a current mirror is disclosed. The current mirror circuit has a current path defined by a first current mirror stage driving a second current mirror stage, the second current mirror stage is coupled to a supply voltage sou... | 06/13/2006 |
| 7058375 | Low noise block down-converter having temperature characteristic compensating circuit In a mixer of a converter, a bipolar transistor is connected between the base of a bipolar transistor and a positive power-supply node within a driving circuit, as a temperature characteristic compensating circuit. When the ambient temperature of the driving circuit... | 06/06/2006 |
| 7034517 | Multimeter with filtered measurement mode A multimeter with a filtered measurement mode. By pressing a single button or key, a low-pass filter is switched into the signal path to filter voltage spikes, noise, and switching transients from pulse-width modulated pulses, or lower frequency sinusoidal signals w... | 04/25/2006 |
| 6973181 | Method of generating a ring signal in a subscriber line interface circuit technical field In a method and a device for controlling the magnitude of the generated ring signal in a the Subscriber Line Interface Circuit (SLIC) the voltage of the A and B lines to the subscriber from the SLIC is compared to a reference voltage. The device is arranged to contr... | 12/06/2005 |
| 6945095 | Non-intrusive multiphase flow meter Embodiments of the present invention generally provide methods, apparatus, and systems for determining void fractions of individual phase components of a multiphase mixture. The void fractions may be determined based on measured parameters of the mixture as a whole,... | 09/20/2005 |
| 6864726 | Output signal control from a DAC-driven amplifier-based driver An apparatus and a method to control an output signal from a DAC-driven amplifier-based driver are disclosed. The apparatus includes an amplifier and a driver. The amplifier has a negative input terminal, a positive input terminal, and a first output terminal. The d... | 03/08/2005 |
| 6742858 | Label printer-cutter with mutually exclusive printing and cutting operations A label printer-cutter includes a frame and a print head assembly connected to the frame. The print head assembly includes a print head for printing to a label media. The label printer-cutter includes a cutting assembly connected to the frame, and the cutting assemb... | 06/01/2004 |
| 6456058 | Temperature stable integrated circuit full wave level detector incorporating a single operational amplifier stage design A temperature stable, integrated circuit full wave level detector incorporating a single stage operational amplifier design which does not require, as in prior art implementations, two operational amplifiers to perform a full wave rectification function o... | 09/24/2002 |
| 6437630 | RMS-DC converter having gain stages with variable weighting coefficients An RMS-DC converter generates a series of progressively amplified signal pairs which are then multiplied and weighted in such a way as to cancel uncorrelated noise while still providing true square-law response. The converter includes two series of gain s... | 08/20/2002 |
| 6400205 | Diode detection circuit A diode detection circuit is capable of obtaining an ideal rectification voltage even the case of a minute input high-frequency voltage. The circuit includes a first diode that accepts an AC signal; a first parallel circuit consisting of a resistor and a ... | 06/04/2002 |
| 6310571 | Multiplexed multi-channel bit serial analog-to-digital converter A circuit includes an analog-to-digital (A/D) converter for multiplexing between a number of analog input signals and converting the selected analog input signals to a digital code representation. The A/D converter includes a comparator having a first inp... | 10/30/2001 |
| 6252439 | Current level detector device for protecting a circuit against alternating current overcurrents A current level detector device for protecting a circuit against alternating current overcurrents includes resistor arrangements that are inserted into the circuit to be protected and two detector cells, one for each half-wave of the current. The detector... | 06/26/2001 |
| 6169429 | HDD chip set partitioning A read channel circuit includes a digital partition and a analog portion coupled by an ADC. This digital portion and the analog portion are on different chips and the analog portion is positioned on the flex.... | 01/02/2001 |
| 6046631 | Detector coupled to transmission line by microstrip line The present invention provides a detector comprising a microstrip line having one end being grounded and another end connected to a main transmission line, a detection diode connected to the microstrip line, and a smoothing circuit for smoothing a signal ... | 04/04/2000 |
| 5999849 | Low power rectifier circuit for implantable medical device A low power switched rectifier circuit is realized using P-MOS and N-MOS FET switches that are turned ON/OFF at just the right time by a detector and inverter circuit (which form an integral part of the rectifier circuit) to rectify an incoming ac signal ... | 12/07/1999 |
| 5929663 | Control circuit for distributed electrical equipment A control circuit for distributed electrical equipment includes a relaxation oscillator configured for voltage to frequency conversion whereby the output frequency is proportional to the input voltage signal. An opto-coupler provides voltage isolation to ... | 07/27/1999 |
| 5886544 | Signal processing with sampling A signal-processing arrangement includes a conversion circuit CONV which converts an input signal Sin into sub-ranging signals Sc(1)..Sc(N) corresponding to different amplitude sub-ranges of the input signal Sin. Each sub-range signal is supplied to a res... | 03/23/1999 |
| 5870031 | Full-wave rectifier and method of operation for a recognition system A full-wave rectifier circuit (70) includes a first transistor (N1) and a second transistor (N2) in combination to form a first transistor pair (N1 and N2) for minimizing the voltage drop between ground (88) and the transponder substrates. A third transis... | 02/09/1999 |
| 5825214 | Integrated circuit arrangement with diode characteristic An integrated circuit arrangement with a diode characteristic including a source-drain section of a first transistor arranged in the current path between the input and output sides of the arrangement; a first inverter stage with an output fed back to its ... | 10/20/1998 |
| 5811994 | Electrically controlled bidirectional AC switch, and an integrated circuit and electronic card incorporating the switch The switch of this invention has two conduction terminals and basically consists of the parallel coupling, across the two conduction terminals, of a first N-channel MOS transistor and second P-channel MOS transistor. The first MOS transistor will be condu... | 09/22/1998 |
| 5808491 | Method and apparatus for sensing a common mode voltage A method and apparatus are provided for sensing a common mode signal of a differential circuit. A first full wave rectifier samples the differential signal and generates a first rectified signal. A second full wave rectifier samples the differential signa... | 09/15/1998 |
| 5804993 | Detecting circuit An inputted signal applied to an input terminal of a detecting circuit is rectified in a positive amplitude range thereof by a rectifier block and stored in a capacitor. In a negative amplitude range, the electric energy stored in the capacitor is dischar... | 09/08/1998 |
| 5731999 | Method of controlling clamp induced ringing A method of designing improved CMOS input circuits by understanding and selecting appropriate drive strength for a CMOS output from a previous stage. The method involves modeling the net using HSPICE and including a transit time term to accurately model c... | 03/24/1998 |
