Matches 51 - 100 out of 248 < 1 2 3 4 5 >
Match Document Document Title
6166583 Semiconductor device, and operating device, signal converter, and signal processing system using the semiconductor device  
There is disclosed a semiconductor device in which capacitor means are connected to multiple input terminals via latch means, and the terminals on one side of the capacitor means are commonly...
6133776 Signal processing circuit which provides for a temperature dependent voltage source that is also ratiometric to the supply voltage and method of use  
A signal processing circuit is disclosed. The signal processing circuit comprises a sensor for receiving a voltage and providing a first signal based on at least one parameter. The signal...
6127842 Modified adder tree structure and method using logic and gates to generate carry-in values  
In accordance with the present invention, an adder tree structure includes at least two adder stages. In the circuit and method according to the present invention, the first of the two adder stages...
6121817 Analog median filter circuit for image processing  
An analog median filter for rejecting isolated impulse noise while preserving signal step changes in image processing. The analog median filter includes a number of transconductance amplifiers with...
6107858 OTA squarer and hyperbolic sine/cosine circuits using floating transistors  
An OTA having a completely linear transconductance characteristic or a squarer having an accurate square-law characteristic is provided, which is comprised of first and second differential...
6031415 Matched filter circuit for spread spectrum communication  
The present invention provides a matched filter circuit available for processing long P/N codes in a small size circuit. A matched filter circuit according to the present invention performs the...
6029059 Quadrature mixer method and apparatus  
A quadrature mixer architecture that mixes the in-phase and quadrature phases within the same cell. The input voltage is applied to the base of a voltage conversion transistor, which converts the...
6020782 Noise assisted signal processor with nonlinearly coupled arrays of nonlinear dynamic elements  
A signal processor utilizes a globally nonlinearly coupled array of nonlinear dynamic elements. In one embodiment of the invention, these elements take the form of bistable overdamped oscillators....
5955909 Device for monitoring chip temperature  
A device for monitoring chip temperature of a switch output stage having a switch element (100, 106) that has a first circuit (10) for generating a signal (pv on ) corresponding to the dissipated...
5939925 Semiconductor circuitry to process analog signals using weighted- sum operations  
A semiconductor operational circuit conducts real-time analog vector operations to permit the determination of the center of gravity of an image of a moving object. The circuit employs a first...
5939945 Amplifier with neuron MOS transistors  
Amplifier circuits having at least one neuron MOS transistor in which a coupling gate is connected to an amplifier output and at least one further coupling gate is connected with a respective...
5936435 Voltage comparator and monitor  
A device for comparing two DC voltages (U 1 , U 2 ) comprises a voltage comparator (3) having two inputs (9, 11). One of the two voltages (U 1 , U 2 ) to be compared to each other is fed directly...
5903185 Hybrid differential pairs for flat transconductance  
Hybrid differential pairs and methods of their hybridization by connecting and operating in parallel a degenerated differential pair with a multitanh. Proper matching of the degenerated...
5898334 Reduced output capacitance circuit for driving a grounded load in response to a stepped input  
A circuit for generating an output signal used for driving a grounded load is provided. The circuit provides an output signal without glitches or spikes. The circuit also outputs a drive signal...
5886559 Signal generating apparatus and method  
Signal generating apparatus comprises a linear series of Hall-effect switches (44) arranged as a plurality of linear arrays in discrete probes (46a, 46b . . . 46n) which are butted end to end. Each...
5872483 Hyperbolic sine and cosine functional circuits, squaring circuit, and OTA consisting of two differential circuits with a dynamic bias current  
In a differential circuit including first and second transistors, a constant current circuit causes a constant current to flow through the first transistor. A variable current circuit causes a...
5847585 Method and apparatus for developing a close frequency tolerance output signal from an input signal of lesser frequency tolerance  
An input signal of frequency tolerance A is combined with a reference first signal having a frequency tolerance B to develop a second signal having a combined frequency tolerance of -A and B . The...
5841311 Voltage subtracter circuit, voltage amplifier circuit, voltage divider circuit and semiconductor integrated circuit device  
A voltage subtracter circuit of the present invention includes a constant current source 1, a first MOS transistor pair 2, one end of which is connected to a source voltage terminal, and a second...
5831481 Phase lock loop circuit having a broad loop band and small step frequency  
A phase lock loop circuit includes an oscillator, a digital mixer, a comparator, a loop amplifier, and a low-pass filter. The oscillator has an oscillation frequency controlled by a control...
5825229 Electronically tunable voltage level shifter and amplifier therefor  
A voltage level shift circuit has a first input receiving a first voltage signal and a second input receiving a second voltage signal. The voltage level shift circuit is structured to generate an...
5815021 Weight addition circuit  
The present invention provides a weighted addition circuit for sampling, holding and performing weighted addition by a circuit smaller than a conventional one. In the weighted addition circuit of...
5781060 Semiconductor integrated circuit device having a variable current source controlled by a shift register  
A semiconductor integrated circuit device includes a variable current source 2. This device further includes a control circuit 1, 10 causing the current source to change the value of the current...
5764718 Ripple carry logic ASND method  
Apparatus and method to logically process signals representative of multiple bits of multiple-bit numbers include successively delaying application of the bit-representative signals to logical...
5760648 Electronic circuit for converting a differential signal into a single-ended signal with common mode voltage rejection by resistor network  
A differential-to-single-ended converter comprising a resistor network (205) and an operational amplifier is introduced. In comparison to prior art converters, a resistor (250) placed between the...
5729161 Temperature-compensated summing comparator  
In a summing comparator (10) in which one differential input voltage received by one differential pair (18) is dependent on temperature variations, such as across a resistor (12) with a large...
5719518 Variable electronic resistor having parallel phase-inverted variable semiconductor channels with common control input and current-to-voltage converters  
A variable electronic resistor (16), which can be varied by a control signal (Ust) at the control input (15), contains two parallel, signal paths (1 and 2) with identical components, of which one...
5717350 Degenerated differential pair waveform builder  
A degenerated differential pair waveform builder has a single ramp generator control circuit and a plurality of differential pairs. A trigger input is generated and input to the ramp generator...
5708385 Weighted addition circuit  
A weighted addition circuit contains a plurality of resistances, each of which is connected to a common output at one terminal and to different input voltages at the other terminal. The voltage at...
5708379 Electronically programmable output impedance circuit  
A method and apparatus for generating an AC voltage with user defined inductance and resistance values in series therewith is described. The output voltage of the AC source is sampled and a signal...
5650743 Common mode controlled signal multiplier  
A common mode controlled signal multiplier includes a pair of interconnected differential amplifiers, each of which receives a common mode signal and an input signal and generates one phase of a...
5646569 Method and apparatus for AC coupling  
AC coupling is effected by a feedback circuit that detects a DC component in the coupled signal, and adjusts a DC subtraction signal accordingly. In one embodiment, a digital signal processor (DSP)...
5646560 Integrated low-power driver for a high-current laser diode  
A driver circuit for a laser diode includes a prebiasing amplifier for providing a prebiasing current, a second amplifier for amplifying an input signal to provide an output current signal, and a...
5634202 Method and apparatus for integrating a plurality of analog input signals prior to transmitting a communications signal  
A method and apparatus for integrating a plurality of analog input signals. A first integrator(725) having a first pole frequency integrates a first of the input signals and a second...
5633610 Monolithic microwave integrated circuit apparatus  
A monolithic microwave semiconductor integrated circuit including a bias stabilizing circuit of a current mirror type formed of a bias control transistor formed of an enhancement mode compound...
5602504 Four-quadrant three-input multiplier  
A four-quadrant three-input multiplier is disclosed. The three-input multiplier, which finds the product of a first input signal, a second input signal, and a third input signal, includes four...
5554952 Fast responding method and apparatus for three phase A/C voltage sensing  
An apparatus for generating a sensing signal from a generally periodic multi-phase AC signal is set forth. The apparatus utilizes a plurality of integrator circuits, a single integrator circuit...
5541542 Halftone image device and its driving circuit  
The invention makes it possible to drive a halftone image device and achieve high halftone reproduction by allowing at least one of the leading and trailing edges of a pulse width-modulated signal...
5537071 Method and circuit for dividing an input signal into amplitude segment signals and for non-linearly processing the amplitude segment signals on the basis of the value of each amplitude segment signal  
A non-linear circuit having a transfer characteristic which is adjustable per amplitude segment of an input signal (Yi) includes a segmenting circuit (11 . . . 15, 21 . . . 25) for obtaining a...
5530393 Low power analog absolute differencing circuit and architecture  
A low power analog absolute differencing circuit and architecture is disclosed. The circuit includes an integrating amplifier with an input node connected to a common integration line. The common...
5525928 Filter boost preattenuator  
A filter boost preattenuator provides controlled, rapid variable signal preattenuation at the input of a filter to optimally compensate for the absolute gain increase of the filter caused by...
5521543 Averaging circuit  
A small high speed averaging circuit includes a plurality of CMOS transistor pairs with substantially equal characteristics. Their voltage follower outputs are connected to a common output. A mean...
5506538 Vector summation device  
A vector summation device includes a squaring circuit for receiving a number of input voltage signals, and a square-root circuit having first and second current terminals connected electrically to...
5502413 Switchable constant gain summing circuit  
A switchable constant gain summer circuit (10) has been provided. The summer circuit selectively amplifies a plurality of input signals while maintaining a constant dc current flowing through a...
5500618 Operational function generator  
A novel compensation device for conditioning or generating signals to have an arbitrarily defined shape, produced to an arbitrarily specified accuracy. The device comprises a plurality of bounded...
5469102 Capacitive coupled summing circuit with signed output  
A summing circuit for executing summing of analog data with sign. The summing circuit includes two serially connected inverters INV1 and INV2, each having a feed back line, and selectively inputs...
5469101 Analog signal selection and summing circuit having multiplexing capability  
An analog signal selection and summing circuit including a summing amplifier having a current summing input, a plurality of voltage controlled current sources responsive to a plurality of input...
5465064 Weighted summing circuit  
A weighted summing circuit for minimizing bias voltage influence includes capacitive coupling and a closed loop inverter. The weighted summing circuit inputs the output of a capacitive coupling CP...
5453711 Weighted summing circuit  
A weighted summing circuit performing a weighted summation using small scale circuitry with a degree of accuracy and that is easily adapted to operate with various kinds of processing systems....
5450029 Circuit for estimating a peak or RMS value of a sinusoidal voltage waveform  
An estimating circuit for application in estimating or deriving the value V rms 2 or V peak 2 , of a line voltage V AC provides fast response time and a substantially ripple free value for these...
5444411 Functional MOS transistor with gate-level weighted sum and threshold operations  
A threshold circuit that uses capacitors to form a weighted sum of its inputs uses a two stage capacitor structure. The two stages form a compact structure that increases the number of input...
Matches 51 - 100 out of 248 < 1 2 3 4 5 >