Celebrity Inventors
Mark Twain (Samuel L. Clemens) received Patent No. 121,992 for "An Improvement in Adjustable and Detachable Straps for Garments." He later received two more patents: one for a self-pasting scrapbook and one for a game to help players remember important historical dates.
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| Number | Title | Issue Date |
| 7746150 | Circuit and method for providing a fail-safe differential receiver A fail-safe differential receiver having a differential amplifier adapted to receive first and second differential input signals and generate a differential voltage. A peak detector is coupled to the differential amplifier for generating a detect signal and a compar... | 06/29/2010 |
| 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 |
| 7348825 | Electric circuit A transistor has variation in a threshold voltage or mobility due to accumulation of factors such as variation in a gate insulating film which is caused by a difference of a manufacturing process or a substrate to be used and variation in a crystal state of a channe... | 03/25/2008 |
| 7274756 | Digital signal receiver operating beyond the -3dB frequency A receiver for digital data connects to a preceding signal path and the digital data has a lower to upper data frequency range. The receiver includes a received signal input terminal connected to a higher frequency gain circuit that shows highest transfer amplitude ... | 09/25/2007 |
| 7199663 | Use of analog-valued floating-gate transistors for parallel and serial signal processing Analog-valued floating-gate transistors are used as trimmable circuit components for modifying and/or controlling the gain, phase, offset, frequency response, current consumption, and/or transfer function of signal pathways in parallel and/or serial processing circu... | 04/03/2007 |
| 7187237 | Use of analog-valued floating-gate transistors for parallel and serial signal processing Analog-valued floating-gate transistors are used as trimmable circuit components for modifying and/or controlling the gain, phase, offset, frequency response, current consumption, and/or transfer function of signal pathways in parallel and/or serial processing circu... | 03/06/2007 |
| 7173403 | Boost DC/DC converter A boost DC/DC converter, including a mask circuit, a switched boost circuit, a pulse width modulation (PWM) circuit and an AND gate, is provided. The mask circuit is used to output a mask signal according to a load current. In the present invention, the system can s... | 02/06/2007 |
| 7091750 | Sense amplifier and electronic apparatus using the same A sense amplifier according to the present invention for detecting a potential difference of signals input to a first input terminal and a second input terminal, includes a first means for applying voltages corresponding to threshold voltages of first and second tra... | 08/15/2006 |
| 7061324 | Use of analog-valued floating-gate transistors for parallel and serial signal processing Analog-valued floating-gate transistors are used as trimmable circuit components for modifying and/or controlling the gain, phase, offset, frequency response, current consumption, and/or transfer function of signal pathways in parallel and/or serial processing circu... | 06/13/2006 |
| 7038544 | Use of analog-valued floating-gate transistors for parallel and serial signal processing Analog-valued floating-gate transistors are used as trimmable circuit components for modifying and/or controlling the gain, phase, offset, frequency response, current consumption, and/or transfer function of signal pathways in parallel and/or serial processing circu... | 05/02/2006 |
| 6943619 | Practical active capacitor filter A method and apparatus is described that filters an electrical signal. The filtering uses a capacitor multiplier circuit where the capacitor multiplier circuit uses at least one amplifier circuit and at least one capacitor. A filtered electrical signal results from ... | 09/13/2005 |
| 6927618 | Electric circuit A transistor has variation in a threshold voltage or mobility due to accumulation of factors such as variation in a gate insulating film which is caused by a difference of a manufacturing process or a substrate to be used and variation in a crystal state of a channe... | 08/09/2005 |
| 6867634 | Method for detecting the null current condition in a PWM driven inductor and a relative driving circuit A method for detecting a null current condition in a PWM driven inductor connected between a voltage source node and a second circuit node of a line for outputting current to a load includes generating a derivative signal by time differentiating a voltage on the sec... | 03/15/2005 |
| 6657486 | MOS differential amplifier circuit having a wide linear input voltage range A MOS differential amplifier circuit has a differential pair having first and second MOS transistors. The source electrodes of the first and second MOS transistors are commonly coupled and driven by a current source, which can be adjusted to change the tr... | 12/02/2003 |
| 6529048 | Dynamic slew-rate booster for CMOS-opamps The opamp with a slew rate booster includes a first high side transistor 23 coupled to a first differential output node OUT-; a second high side transistor 26 coupled to a second differential output node OUT+; a first booster circuit 72 coupled to the con... | 03/04/2003 |
| 6501255 | Differential current source with active common mode reduction A voltage-controlled current source provides operation as either a differential current source for a floating load, or operation as a grounded current source when one end of the load is grounded. Switching between operation as a differential current sourc... | 12/31/2002 |
| 6396328 | Variable capacitance circuit A variable capacitance circuit enables electrostatic capacity to be adjusted as a trimmer capacitor, and that enables a temperature characteristic to be set variably. An input voltage is made to lead by a phase angle of 90° due to a differentiating circu... | 05/28/2002 |
| 6362758 | Combined input circuit for analog to digital conversion An input circuit for, for example, an A/D converter mainly determines the performance of the circuit preceded by the input circuit (A/D converter). To improve the performance of the input circuit and to overcome the problem of high-power dissipation at th... | 03/26/2002 |
| 6031270 | Methods of protecting a semiconductor device The present invention includes differential devices and methods of protecting a semiconductor device. One aspect of the present invention provides a differential device adapted to be coupled to a ground connection, the differential device comprising: a fi... | 02/29/2000 |
| 5986927 | Autozeroing floating-gate amplifier An autozeroing floating-gate amplifier (AFGA) is an integrated continuous-time filter that is intrinsically autozeroing. It can achieve a highpass characteristic at frequencies well below 1 Hz. In contrast with conventional autozeroing amplifiers that eli... | 11/16/1999 |
| 5804921 | Soliton quenching NLTL impulse circuit with a pulse forming network at the output An impulse forming circuit is disclosed which produces a clean impulse from a nonlinear transmission line compressed step function without customary soliton ringing by means of a localized pulse shaping and differentiating network which shunts the nonline... | 09/08/1998 |
| 5701101 | Charge amplifier for blast gauges The present invention is a charge amplifier that directly produces a low impedance voltage output proportional to the charge at its input. The invention consists of an operational amplifier, an input capacitor, a feedback capacitor and a feedback resistor... | 12/23/1997 |
| 5689205 | Switched current differentiator A switched current differentiator includes first and second interconnected current memory cells, An input current is applied to terminal (1) and is fed on line (2) to the current memory cells, A first output current is derived from the first current memor... | 11/18/1997 |
| 5646955 | Apparatus for measuring cycle to cycle jitter of a digital signal and method therefor A discriminator provides an output signal having an amplitude proportional to the frequency of a measured signal. The output of the discriminator is connected to a differentiator circuit that provides an impulse signal proportional to a cycle to cycle fre... | 07/08/1997 |
| 5625645 | Differential pulse encoding and decoding for binary data transmissions A differential pulse encoding and decoding approach for binary data transmissions, such as binary frequency shift keying (BFSK) data transmissions, for sending and recovering a serial, binary digital data stream by differentiating the pulses thereof. A me... | 04/29/1997 |
| 5623218 | Address transition signal detecting circuit An address transition signal detecting circuit includes a differentiator for receiving and differentiating an address input signal, and a pulse signal forming portion for receiving the signal differentiated in the differentiator to thereby form an address... | 04/22/1997 |
| 5576634 | Bus driver for high-speed data transmission with waveform adjusting means A bus driver includes differentiating and delay circuits connected together in parallel. The differentiating circuit receives an input signal via a first buffer circuit and produces a first signal having a falling and rising period. The delay circuit dela... | 11/19/1996 |
| 5576658 | Pulse shaping circuit There is disclosed a rectangular filter which has a simple configuration and is capable of producing an improved rectangular wave. An input step wave is differentiated by a differentiator circuit and amplified by a first amplifier. The output from the amp... | 11/19/1996 |
| 5533489 | Exhaust gas recirculation control system A control system for controlling exhaust gas recirculation in an internal combustion engine. The output of a throttle position sensor is used as an input to two parallel filters. The first filter is a lag-lead compensated filter which functions as a diffe... | 07/09/1996 |
| 5497111 | Peak detection circuit for suppressing magnetoresistive thermal asperity transients in a data channel A peak detector for extracting pulses in a magnetoresistive sensor circuit while suppressing the recovery transients created by thermal asperities. The disclosed peak detector circuit is a simplified variation of the standard magnetoresistive sensor peak ... | 03/05/1996 |
| 5408192 | Monolithic broadband phase shifting circuit for analog data signals An accurate phase shifting circuit providing two analog signals having a 90-degree phase shift between them from a single sampled-data input without the need for components external to a monolithic integrated circuit. A combination of two discrete-time ci... | 04/18/1995 |
| 5394108 | Non-linear burst mode data receiver Binary current signals are differentiated to produce pulses indicative of the front and rear edges. The pulses are amplified and utilized in a latch to regenerate binary voltage signals which are amplified replicas of the input signals. Because of the inp... | 02/28/1995 |
| 5386152 | Power-on reset circuit responsive to a clock signal A power-on reset circuit includes a differentiator circuit, a sample-hold circuit and a reset signal generating circuit. The differentiator circuit differentiates a clock signal from an oscillator after a power supply is applied to a power supply terminal... | 01/31/1995 |
| 5357208 | Boost function for filters An integrated circuit is disclosed that includes a biquadratic filter in which the poles and zeroes are independently adjustable. The transfer function of the filter has a pair of zeroes in the numerator and a pair of complex conjugate poles in the denomi... | 10/18/1994 |
| 5303179 | Method and apparatus for electronically simulating capacitors A circuit that electronically simulates a capacitor includes a differentiator and a current source. In the preferred embodiment, the differentiator includes a differentiating gain amplifier that produces an output signal in response to an applied input si... | 04/12/1994 |
| 5276367 | Offset drift reducing device for use in a differential amplification circuit In a measuring differential amplifier having first and second input terminals for subtracting a first signal applied to the first input terminal from a second signal applied to the second input terminal to obtain a subtraction and for outputting a signal ... | 01/04/1994 |
| 5229664 | Programmable differentiator delay A programmable delay for the gate signal output of the differentiator in a data analyzing circuit is provided. A data signal is produced by a low pass filter, and a differentiator (high pass filter) produces a gate signal. The cutoff frequency of the low ... | 07/20/1993 |
| 5227671 | Circuit providing equalized duty cycle output A duty cycle equalization circuit equalizes the duty cycle of an incoming two-level logic driving signal and includes a CMOS current source having source electrodes connected to receive the two-level logic driving signal and having drain electrodes connec... | 07/13/1993 |
| 5224126 | Phase ambiguity resolution for manchester-encoded data Regeneration of a Manchester coded data stream is improved by a system for distinguishing which data signal transitions are bit center and which are bit end transitions. Using a monostable flip-flop with associated phasing and timing circuits including a ... | 06/29/1993 |
| 5216375 | Variable time-constant type differentiator A variable time-constant differentiator comprises an operational amplifier t which a signal is inputted through a capacitor; and a variable transconductance amplifier connected between an input terminal to which a signal is applied and an 5 output termina... | 06/01/1993 |
