Class 327/354 - Absolute value

Subclass of Class 327 - Miscellaneous active electrical nonlinear devices, circuits, and systems
Definition: Subject matter wherein an output signal is proportional
No. of patents: 32
Last issue date: 08/21/2007

Number	Title	Issue Date
7259703	Device for recording laser trim progress and for detecting laser beam misalignment The device for detecting and tracking a status of a device under laser trim includes: a series connected string of trim tracking links; and a plurality of detecting devices wherein each detecting device is coupled in parallel with a corresponding trim tracking link....	08/21/2007
7128456	Light source device A light source device comprising at least a primary light source (1), a light guide (3) guiding light beamed from the primary light source and having a light incident surface (31) and a light outgoing surface (33), an optical deflector (	10/31/2006
7085942	Method and apparatus for defining an input state vector that achieves low power consumption in a digital circuit in an idle state The method defines an input state vector that achieves low power consumption when applied to the circuit inputs of a digital circuit in an idle state. In the method, independent determinations are performed. Each determination defines a respective set of the input s...	08/01/2006
7068103	Operational transconductance amplifier input driver for class D audio amplifiers An audio preamplifier (10) based on an operational transconductance amplifier, in combination with a class D audio output amplifier (12) is disclosed. The input signal is coupled to the preamplifier (10) through a capacitor (14) in series...	06/27/2006
7064585	Detecting peak signals In one embodiment, the present invention includes an apparatus having a threshold detector with a current comparator to determine if an input signal exceeds a threshold. The input signal may be obtained from a received optical signal and may be compared to a referen...	06/20/2006
6724233	Absolute value circuit An absolute value circuit includes an operational amplifier, the output of which is coupled to control inputs of complementary polarity transistors having current flow paths therethrough coupled in series with inputs of current mirror amplifier stages. A common node...	04/20/2004
6721548	High dynamic range low ripple RSSI for zero-IF or low-IF receivers A received signal strength indicator operating at low intermediate of zero intermediate frequency is provided. The received signal strength indicator forms absolute values from an in-phase signal component and a quadrature signal component of a low or zero intermedi...	04/13/2004
6366152	Vector-signal processing circuit A vector-signal processing circuit can be operated with low power consumption and can be configured so as to be cheap. Sensor signals in three-axial directions are individually rectified by full-wave-rectifier circuits individually formed by combining fou...	04/02/2002
6343113	High impedance absolute telephone line voltage measurement circuit A telephone line measurement circuit is disclosed for detecting a variation of a characteristic between a first and a second leads of a telephone line. The circuit comprises a first circuit having a first and a second inputs and an output. The circuit als...	01/29/2002
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
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
5774008	Computational circuit Addition is performed by a capacitive coupling or resistive coupling. A quantizing circuit is realized by plurality of thresholding circuits receiving an analog input voltages. Subtraction in performed by two MOSs of anti-polarity inputted analog input vo...	06/30/1998
5721507	Full-wave rectifying circuit having only one differential pair circuit with a function for combining a pair of half-wave rectified currents into a full-wave rectified current In a full-wave rectifying circuit comprising a differential amplifier (20) differentially amplifies an input alternating current signal (VIN) to produce first and second amplified output voltages (VO1, VO2) and a voltage r...	02/24/1998
5703518	Absolute value circuit capable of providing full-wave rectification with less distortion An absolute value circuit according to the present invention has a configuration wherein a switch is connected directly to an output of an amplifier and an output terminal. Owing to this configuration, the absolute value circuit can be realized which is c...	12/30/1997
5666080	Computational circuit Addition is performed by a capacitive coupling or resistive coupling. A quantizing circuit is realized by plurality of thresholding circuits receiving an analog input voltages. Subtraction is performed by to MOSs of anti-polarity inputted analog input vol...	09/09/1997
5642070	Signal processing circuit and system for detection of absolute value A signal processing circuit comprises a structure wherein emitters of a plurality of transistors are commonly connected, an inverting amplifier is connected to a base of each of the plurality of transistors, and an absolute value of an input signal suppli...	06/24/1997
5559463	Low power clock circuit High-efficiency clock generator circuits having single or complementary outputs for driving capacitive loads. The clock generator has therein at least one pair of complementary FET switches, coupled between the output of the generator and power supply rai...	09/24/1996
5477171	Full wave rectifier using current mirror bridge A full wave rectifier includes an amplifier having a minus input, a plus input and an amplifier output; an input resistor connected between a circuit input and the minus input; and a current bridge having an output terminal connected to the circuit output...	12/19/1995
5459749	Multi-level superposed amplitude-modulated baseband signal processor A multi-level superposed amplitude-modulated baseband signal processor which has simple hardware structure and a filtering effect for bandwidth and power efficiency in a digital transmission system includes a data delayer, a signal level converter, an ope...	10/17/1995
5394107	Absolute value circuit An absolute value circuit for analog type processing combines an analog inverter circuit and a maximum circuit. The inverter circuit uses an operational amplifier comprised of CMOS inverters which are connected in a cascade with a gain of 1. The maximum c...	02/28/1995
5223799	Parabolic signal generator In a parabolic signal generator, a sync pulse is applied to a saw-tooth wave generation circuit, the output of the saw-tooth wave generation circuit is entered to an absolute value circuit, the output of the absolute value circuit is entered to a logarith...	06/29/1993
4906915	Voltage to absolute value current converter A voltage to absolute value current converter circuit provides an output current signal which is proportional to the absolute value of the AC portion of an input voltage signal. This conversion is accomplished without the use of a capacitor which allows t...	03/06/1990
4899064	Absolute value differential amplifier A high speed analog amplifier having a differential input and provides a single output signal which corresponds to the absolute value of the input voltage. Furthermore, the amplifier provides a selectable output offset voltage which is proportional to a s...	02/06/1990
4652833	Comparator with noise suppression Apparatus for generating a single pulse the first time only that a noisy cyclic signal exceeds a reference level during a half-cycle. For the positive half of a cycle of the noisy cyclic signal, a comparator 12 and a multivibrator 14 produces a fixed volt...	03/24/1987
4518877	Precision absolute value amplifier for a precision voltmeter Bipolar inputs are afforded by the plus inputs of first and second differential input amplifiers. A first gain determining resister is connected between the minus inputs of the differential amplifiers. First and second diodes are connected between the res...	05/21/1985
4473757	Circuit means for converting a bipolar input to a unipolar output A circuit which accepts an input signal of either positive or negative polarity and produces an output signal having an open circuit voltage similar in amplitude to the input signal amplitude but having a defined polarity. A plurality of switching element...	09/25/1984
4461961	Accurate high speed absolute value circuit and method The absolute value circuit of the invention comprises differential voltage to current converter means for converting an input voltage of alternating polarity into a pair of currents whose difference represents the input voltage, first and second inverter ...	07/24/1984
4459493	Absolute magnitude circuit An absolute magnitude circuit is provided wherein an input signal is fed to one input of a differential amplifier circuit, the output of such amplifier circuit being coupled to a second input thereof through a negative feedback loop, such feedback loop ha...	07/10/1984
4362956	Absolute value circuit An absolute value circuit capable of providing, through an output terminal, a signal corresponding to the absolute value of the difference between a first input signal and a second input signal, comprises a first circuit, a second circuit and a uni-direct...	12/07/1982
4121299	Constant velocity vector generator employing absolute value amplifier circuits A Constant Velocity Vector Generator is disclosed for connecting X, Y coordinate points of a rectangular coordinate display system. A pair of absolute value amplifier circuits, a square-root-of-the-sum-of-the-squares circuit, a pair of dividers, and a pai...	10/17/1978
4068138	Signal converter A signal converter for converting a varying input voltage, such as an output signal from a detector, into an output voltage in absolute value, including an operational amplifier, a comparator and two groups of electronic switches. The comparator compares ...	01/10/1978

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Class 327/354 - Absolute value