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5165099 |
Balance control circuit
The balance of the volumes in right and left channels in a stereo play back system is controlled. The amount of attenuation of an attenuator provided in each channel is controlled. When the levels...
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5164620 |
Autonomous gain normalization circuit
An autonomous gain normalization circuit has a fixed capacitor for receiving a current signal such as that output by an infrared detector element and a plurality of switchable capacitors...
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5148449 |
Centering multi-level data
There is provided a scheme for centering data prior to detection. It comprises: determining carrier frequency error, and pre-adjusting the data detection process to compensate for that error...
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5130577 |
Computational circuit for transforming an analog input voltage into attenuated output current proportional to a selected transfer function
An analog computational circuit, for transforming an input voltage into an output voltage or current variable according to a selected transfer function, including a plurality of current sources...
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5130637 |
Constant voltage generating circuit
A constant voltage generating circuit includes a first power supply line coupled to an external power supply line, at least one second power supply line having a voltage different from that of the...
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5124761 |
Semiconductor apparatus
A semiconductor apparatus of the present invention comprises, as, for example, shown in FIG. 5, a semiconductor region (32) of first conductivity type formed on a semiconductor substrate (31), and...
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5107230 |
Switched drivers providing backmatch impedance for circuit test systems
A driver circuit (10) for selecting particular values of backmatch impedance (Z) for a functional or in-circuit test system. The test system (100) generates the backmatch impedance select signals...
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5107140 |
Anticipatory automatic gain control circuit
An apparatus for automatically adjusting the gain of amplifiers receiving the detected light signal from a bar code scanner. The apparatus causes all signals input to the signal processing...
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5093586 |
Voltage step-up circuit for non-volatile semiconductor memory
A voltage step-up circuit for a non-volatile semiconductor memory which includes a first series of an odd number of inverters (20), a second series of an even number of inverters (21), and a...
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5086280 |
Continuously variable pulsewidth waveform formation device employing two memories
A waveform formation device according to the present invention comprises a memory storing rise time data and fall time data related to an output waveform, a first timing generator for producing a...
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5081653 |
Automatic gain control circuit for multilevel duobinary AM/PSK modulated signals
An automatic gain control circuit for multilevel duobinary AM/PSK (amplitude modulation/phase shift keying) signals allows multilevel modulated signals to be received accurately. The circuit...
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5072140 |
Automatic gain control for interferometers and phase sensitive detectors
An automatic gain control circuit for an interferometer or a phase sensitive detector reduces sensitivity to fluctuations in amplitude of input signals. A pair of currents from the phase sensitive...
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5068624 |
Amplifier
In an amplifier using at least two transistors are amplifying elements, the bases (or gates) and the collectors (or drains) of the transistors are commonly connected. A first impedance element is...
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5057799 |
Damping device
A damping device for HF signals with an analog-energizable attenuator, for drift-free generation of the analog control signal, in which any damping characteristics and corrections that may be...
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5055845 |
Signal digitizing method and system utilizing time delay of the input signal
A circuit and method for representing in digital form information about the time and amplitude characteristic of a time-varying input signal. The time-varying input signal is delayed and the...
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5051682 |
System for detecting load on generator
A peak hold circuit and a sample-and-hold circuit are provided for accurately and immediately detecting variations in a load connected to a generator. The peak hold circuit holds a peak voltage of...
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5047657 |
Integrated circuit comprising a signal level converter
An integrated circuit which includes a converter for converting a logic input signal of a first logic type into a logic output signal of a second logic type, for example, from ECL to CMOS level....
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5039960 |
Wideband feedforward gallium arsenide AGC circuit
An automatic gain control (AGC) circuit for microwave applications is disclosed. The AGC circuit includes a power divider for splitting the signal to be controlled into two signal paths. In one...
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5039879 |
Digitally programmable gain normalization circuit
A digitally programmable gain normalization circuit for normalizing gains among analog signal channels. The gain normalization circuit is comprised of a charge integrator which has a plurality of...
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5039887 |
Circuit arrangement for controlling the level of electrical signals
For controlling the level of electrical signals a circuit arrangement is formed with two series connected amplifiers. A first amplifier containing a first variable resistor, operates at maximum...
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5032740 |
Voltage level conversion of a clock signal
The number of wires needed to supply a CCD sensor with the necessary control pulses is reduced by deriving such control pulses as the reset, sample and clamp pulses at the CCD sensor from an...
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5023490 |
Analog signal compression circuit
A desired non-linear, monotonic compression function is performed substantially symmetrically upon both polarities of an AC signal by a circuit having a plurality of limiting stages, each having...
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5015949 |
Steam turbine blade arrival time processor with automatic gain control
An apparatus for detecting turbine blade passing times includes a sensor for producing an input signal each time a blade passes the sensor. Automatic gain control circuitry including a digital...
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5006727 |
Circuit arrangement for adjusting the amplitude of a signal
A circuit arrangement for adjusting the amplitude of a signal includes first and second differential transistor-amplifiers. One of said amplifiers is arranged to receive the signal via its...
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4982108 |
Low current CMOS translator circuit
A low current CMOS translator arrangement is disclosed that utilizes a low current inverting stage, having a peak current requirement, fed by a constant current source at a supply node that also...
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4977334 |
Crest factor correction circuit
A crest factor correction circuit for an ac inverter receives inputs including a full-wave rectified output of the ac inverter having a fixed period and a periodic sequence of phase signals that...
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4967099 |
Low level clamp circuit
In order to stabilize an intermediate level of a clock having at three pulse output levels by a low level clamp circuit, a first negative bias driving circuit outputs a pulse with an amplitude...
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4962324 |
Equalizing circuit for a sense amplifier
This present invention provides an equalizing cicruit for a sense amplifier comprising a sense amplifier enable signal generation section which receives a sense amplifier equalizing signal and...
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4950076 |
Alternate approach for obtaining dynamic range in monopulse guidance systems
A system for improving the dynamic range of guidance systems for missiles d bombs by replacing pseudo-logarithmic amplifiers in the processing circuits with transimpedance amplifiers having feed...
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4947133 |
Method and apparatus for automatic signal level adustment
An input signal passes by way of a variable gain amplifier to an output terminal. In addition the input signal is applied to a peak detector and then a control signal is derived by applying a...
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4945258 |
Monolithic gaAs high speed switch driver
A high-speed swtich driver provides a precise output voltage swing for microwave switches. A first embodiment is for use with TTL circuits, and includes alternating high-gain voltage level shift...
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4924192 |
Adjusting apparatus for adjusting sound volume or sound quality
An adjusting apparatus for adjusting sound volume or sound quality of a signal reproduced from a music source in which an electronic volume section has a group of analog switches. The apparatus...
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4920279 |
Method to expand an analog signal and device to implement the method
A method for enlarging part of an analog input signal, and a circuit to implement this method. The circuit includes an amplifier which receives the analog input signal, the gain of which is...
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4916338 |
FET buffer amplifier
An FET buffer amplifier circuit includes two matched FET amplifiers each consisting of an FET transistor source follower biased by a source impedance. One FET transistor source follower receives an...
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4904924 |
Output circuit for outputting a level shifted output signal
An output circuit provides a high voltage output signal in response to a low voltage input signal. The output circuit includes a pull-up transistor for raising the output signal substantially to a...
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4900955 |
Voltage sharing circuit
A voltage sharing circuit which allows use of low voltage semiconductor devices to obtain higher output voltages is made up of a series stack of the low voltage devices with diode limiters provided...
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4897568 |
Active up-pump for semiconductor sense lines
A pumpdown circuit uses voltage sensing to bring a low node to a potential of V SS +V T by first grounding the node and then floating the node to the V SS +V T potential. When a sensing node is...
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4897559 |
Variable clock delay circuit utilizing the R-C time constant
A variable clock delay circuit utilizing the RC time constant in a semiconductor memory has the improved delay effect of the RC time constant. The variable clock delay circuit in which, in the...
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4890009 |
Monolithic integrated circuit device
A monolithic integrated circuit device comprises first and second output terminals, a power switching circuit which is connected across the first and second output terminals and through which...
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4888496 |
Circuitry for adjusting the amplitude of analog signals
In an audio signal amplitude control circuit of the type including a tapped resistive divider to which the signal is applied, and a multiplexer for selecting one of a plurality of differently...
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4883991 |
Circuit arrangement for adjusting a reference level in a periodic signal
A circuit arrangement for amplifying a periodic signal and for adjusting a reference level contained therein, in which a charging/discharging arrangement alternately supplies charging or...
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4870298 |
Power switch booster circuit
A power booster circuit is described. The booster circuit having amplifying circuitry comprises an input circuit, a switching circuit, and an auxiliary power circuit. The booster circuit is...
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4870367 |
Signal amplifier circuit
A signal amplifier circuit which can amplify, with a simple construction, an AC component having an amplitude of one polarity with accuracy from a composite signal which contains a DC component...
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4862387 |
Universal-gain data plotter
This apparatus and method permit plotting a series of data values at an optimum scale expansion, even when the largest value is not known in advance, for permanent recording or transitory display....
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4859872 |
Synchronizing signal processing circuit
An input synchronizing signal is subjected to mean DC voltage adjustment so that the mean DC voltage thereof becomes a prescribed level. The input synchronizing signal after the mean DC voltage...
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4843340 |
Monolithically integrable controller circuit
A monolithically integrable controller circuit, particularly for amplitude control in oscillator amplifiers, providing an actual-value detection by rectification, an input signal means-value...
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4833342 |
Reference potential generating circuit
A reference potential generating circuit according to this invention includes a first insulated gate field effect transistor of an enhancement type, a second insulated gate field effect transistor...
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4833343 |
Clock generator having complementary transistors
A generator circuit in an integrated semiconductor circuit for generating a clock voltage having a voltage being raised with respect to a supply potential of the generator circuit includes a first...
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4818951 |
Gain control or multiplier circuits
This invention concerns, in a current-controlled amplifier circuit, the combination of output amplifier means having an input conductor and having an output conductor for converting a signal at the...
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4810908 |
Semiconductor logic circuit comprising clock driver and clocked logic circuit
A semiconductor logic circuit comprises a clock driver circuit and a clocked circuit which carries out a clocked operation responsive to an output of the clock driver circuit, where an output logic...
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