Did You Know...
...that when IBM conducted a market study of Chester Carlson's invention in 1959, the company concluded that it would take only 5000 units of his new product to saturate the market? IBM therefore declined to be part of the new product introduction. Too bad for IBM. Carlson's invention was the xerography process, and his new product was the beginning of the Xerox Corporation. It is estimated that every day, worldwide, 3,000,000,000 copies are made!!
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| Number | Title | Issue Date |
| 7990196 | Signal driver with first pulse boost A driver boost signaling circuit provides a pulse boost to the first cycle of an output pulse wave applied to an associated load. The circuit includes a signal generator circuit generating a signal including a series of pulses, a determining circuit determining a hi... | 08/02/2011 |
| 7952407 | Voltage disturbance and harmonics monitor An electronic monitor for monitoring characteristics of an AC power line for swells, sags, RMS voltage, impulses, total harmonic distortion (THD) and frequency. The waveform is received at the monitor, scaled to a lower magnitude, rectified by an op amp with zero of... | 05/31/2011 |
| 7710176 | Voltage disturbance and harmonics monitor An electronic monitor for monitoring characteristics of an AC power line for swells, sags, RMS voltage, impulses, total harmonic distortion (THD) and frequency. The waveform is received at the monitor, scaled to a lower magnitude, rectified by an op amp with zero of... | 05/04/2010 |
| 7362142 | Current source apparatus, light-emitting-device apparatus and digital-analog converting apparatus A current source apparatus includes a first MOS transistor having a drain serving as current input terminals with the gate connected to the drain, a first switch connected to the source of the first MOS transistor, a second MOS transistor having a drain serving as a... | 04/22/2008 |
| 7288958 | Slew rate calibrating circuit and slew rate calibrating method A slew rate calibrating circuit and a slew rate calibrating method are provided which are capable of adjusting, with high accuracy, a slew rate of a signal to be output to a transmission path. A first clock is input and a delay time of a variable delay circuit is in... | 10/30/2007 |
| 7123067 | Voltage-change control circuit and method In a charge-pump booster circuit, the control clock is controlled on a small-step basis to thereby suppress the boost amplitude and the occurrence of various noises. Provided are a charge-pump booster circuit section for boosting an external power voltage in absolut... | 10/17/2006 |
| 7116150 | Clock gater circuit and associated method One embodiment is a clock gater circuit comprising an inverter block for driving an output clock signal responsive at least in part to an input clock signal that is selectively driven via a clock generator circuit to an input node of the inverter block responsive to... | 10/03/2006 |
| 7116139 | Apparatus and method for controlling operation of a processor device during startup An apparatus for controlling operation of a processor device during startup of the processor device includes: (a) a signal treating circuit receiving a voltage supply signal at a voltage supply locus; the signal treating circuit using the voltage supply signal for g... | 10/03/2006 |
| 7113014 | Pulse width modulator A low-power, synchronous pulse width modulator utilizes a first clock signal at a first frequency to generate a pulse-width modulated signal at the first frequency without requiring a second over sampling clock signal that has a substantially higher frequency by sel... | 09/26/2006 |
| 7109776 | Gating for dual edge-triggered clocking Some embodiments provide reception of a clock signal, reception of a gating signal, and output of a gated clock signal to a dual edge-triggered-clocked circuit. The gated clock signal is based on the clock signal and on the gating signal. ... | 09/19/2006 |
| 7091754 | CMOS LvPECL driver with output level control A differential output driver includes an output block, a replication block, and a feedback control block. Each of the output and replication blocks further includes a preamplifier and a source-follower stage. The preamplifier of the output block receives a different... | 08/15/2006 |
| 6995604 | Current source circuit for generating a low-noise current and method of operating the current source circuit A current source circuit for generating a low-noise current has a current mirror circuit with a first and a second transistor. The current mirror circuit contains a capacitor connected between a source connection and a gate connection of the second transistor. The c... | 02/07/2006 |
| 6992516 | Pulse duty cycle automatic correction device and method thereof A pulse duty cycle automatic correction device has a pulse width detector for detecting the high, low level pulse widths of the input cycle pulse so as to generate high, low level signals; a comparator encoder for comparing the high, low level signals, calculating o... | 01/31/2006 |
| 6946894 | Current-mode synapse multiplier circuit A current-mode synapse multiplier circuit multiplies each of a plurality of pulse signals with each of a corresponding plurality of weight signals. The synapse multiplier includes a plurality of first switches each coupled to a corresponding pulse signal and the cor... | 09/20/2005 |
| 6809570 | Clock gater circuit System and method for implementing a clock gater circuit are described. One embodiment is a clock gater circuit comprising an output clock signal generator electrically connected between a clock input for receiving an input clock signal and a clock output; a switch ... | 10/26/2004 |
| 6803798 | Output control apparatus of pulse width modulator The invention provides an output control apparatus for adjusting the output level of a pulse width modulation (PWM) signal by changing the amplitude level of the output PWM signal. The output control apparatus comprises a control signal generator, a digital-to-analo... | 10/12/2004 |
| 6784711 | Sequential pulse train generator A sequential pulse train generator. Each stage of the sequential pulse train generator includes a dynamic shift register circuit, level shifter, and buffer composed of inverters. The dynamic shift register circuits, allow the pulse generator to operate with a low-vo... | 08/31/2004 |
| 6765420 | Pulse width detection circuit filtering the input signal and generating a binary signal A pulse width detection circuit for accurately detecting a pulse width from an input signal. The detection circuit includes a first filter circuit for receiving the input signal and generating a first processed signal. The first processed signal includes a first com... | 07/20/2004 |
| 6762636 | Circuit and method for adjusting duty cycle of a high speed, low swing output signal A circuit, system, and method is provided for regulating the pulse width and/or duty cycle of a signal indirectly or directly used to drive, e.g., a transmitter. The load of the transmitter can be, for example, an optical signal transmitter. The circuit includes a f... | 07/13/2004 |
| 6760675 | Adjustable high current and high voltage pulse generator A controllable pulse generator apparatus and method are provided according to the invention. The pulse generator generates an adjustable, high current, high voltage pulse train output that may be transmitted to an external device under operation. The pulse generator... | 07/06/2004 |
| 6621357 | Power oscillator for control of waveshape and amplitude An RF power oscillator for contactless card antennas shapes a carrier signal at the operating frequency utilizing a delay circuit having a number of taps for delaying the carrier signal by different lengths of time. The delayed signals are input into a bu... | 09/16/2003 |
| 6578185 | Power-supply-configurable outputs An apparatus comprising one or more output circuits each configured to configure a pad as either an input/output pad, a power pad, or a ground pad in response to a plurality of configuration inputs.... | 06/10/2003 |
| 6448827 | Three-phase pulse width modulation waveform generator The present invention provides a three-phase pulse width modulation waveform generator having at least an up-down counting circuitry which comprises: an up-down counter for performing an up-count or a down-count upon an external input of a count clock sig... | 09/10/2002 |
| 6388478 | Configurable clock generator A circuit and method for implementing a configurable clock generator comprising a logic circuit, a configurable matrix and a phase-locked loop. The logic circuit may be configured to generate a plurality of control signals. The configurable matrix may com... | 05/14/2002 |
| 6359524 | Modulation pulse-top ripple compensation for a travelling wave tube pulser A circuit for applying a compensating ripple signal at a low voltage point, such as the collector electrode of a travelling wave tube to compensate for pulse-top ripple extant on a high voltage pulse applied at the travelling wave tube cathode, to provide... | 03/19/2002 |
| 6323707 | Output signal level control circuit in a semiconductor device A pulse signal output circuit charges and discharges a capacitor in response to a clock signal and outputs a pulse signal having a pulse width determined by a time for charging and discharging the capacitor. A control signal generation circuit outputs a c... | 11/27/2001 |
| 6265905 | Quasi-voltage sensing input impedance controlled preamplifier for magnetoresistive elements A method and system for providing a voltage-sensing preamplifier for use with a magnetoresistive sensor is disclosed. The method includes providing a gain stage and providing a control circuit. The system includes the gain stage and the control circuit. T... | 07/24/2001 |
| 6236252 | Low-noise current pulse generator device A current pulse generator device includes current pulse generator circuits and polarizer circuits. It further includes holding circuits for holding the polarization voltage connected to the generator circuits, the holding circuits connected via switch cir... | 05/22/2001 |
| 6147533 | Data communication receiving elements A data communication receiving element includes a photo-receiving element for receiving an external light signal and for converting the light signal to a current signal. It further includes an amplifier circuit for amplifying the current signal after conv... | 11/14/2000 |
| 5943366 | Method of generating A.C. information for a bus system, and transmission unit for carrying out the method Method and device for generating bit information in a subscriber station of a bus system, in particular of the bus of the EIBA, essentially symmetrical AC voltage information being superposed as bit information on a DC voltage of the bus in that a DC volt... | 08/24/1999 |
| 5748026 | Circuit for converting level of low-amplitude input A level converting circuit for an input clock signal having a relatively low amplitude comprising a level converting circuit for converting the input clock signal to an output clock signal having a relatively high amplitude, the level converting circuit h... | 05/05/1998 |
| 5675279 | Voltage stepup circuit for integrated semiconductor circuits A voltage stepup circuit having a plurality of setup circuit units connected in stages between an input voltage node and a stepup voltage node. Each circuit unit comprises at least two first and second MOS transistor T1 and T2. Each of first stepup capaci... | 10/07/1997 |
| 5608349 | Circuit arrangement with adjustable amplitude-frequency response A circuit arrangement with an adjustable amplitude-frequency response between an input signal terminal and an output signal terminal can be changed over simply between a fourth-order high-pass or low-pass characteristic and a second-order all-pass charact... | 03/04/1997 |
| 5541543 | Regulating device for a telephone loud-speaker A fixed impedance load is provided with a signal having a variable frequency F from a line capable of supplying a variable available power. The device comprises a pulse width modulator that operates at frequency F and supplies the load with pulses, the wi... | 07/30/1996 |
| 5510743 | Apparatus and a method for restoring an A-level clipped signal A circuit which restores portions of an input signal lost due to clipping distortion includes a comparator which locates the portions of the input signal which have been subject to clipping distortion and generates a pulse signal where each pulse correspo... | 04/23/1996 |
| 5369311 | Clock generator control circuit A controller for a clock generator. The controller of the present invention enables a clock signal to the internal clocking mechanism of a device. The controller of the present invention includes a detector and a timer. The detector has two input sense le... | 11/29/1994 |
| 5323438 | Programmable pulse-width modulation signal generator A programmable pulse-width-modulation (PWM) signal generator for selectively generating several PWM signals each of which has a different pulse width. The programmable PWM signal generator, which may be adapted in a television system, includes a shift reg... | 06/21/1994 |
| 5315261 | Compressing and expanding operational circuit with no use of clock signal An operational circuit without using a clock signal to be used for a compressing or expanding circuit, which comprises a first and second DC signals different in polarity from each other are obtained in response to an input AC signal. The AC signal and a ... | 05/24/1994 |
| 5160854 | Single-drive level shifter with low dynamic impedance A level shifter, particularly suited for driving power stages for supplying power to integrated circuits, includes a DMOS transistor (40) which is driven by a digital signal source (42) and has a load resistor (44) as its drain load. A shifted output sign... | 11/03/1992 |
| 5138187 | Amplitude variable pulse generating circuit An amplitude variable pulse generator is provided with two voltage supply sources. The first voltage source supplies a variable voltage which determines the amplitude of the output pulse. The second voltage source is a fixed or constant voltage source whi... | 08/11/1992 |
