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| Number | Title | Issue Date |
| 7439780 | Chopper type comparator A comparator includes: a CMOS inverter constituted by a combination of a first p-channel MOS transistor and a first n-channel MOS transistor; a second p-channel MOS transistor connected in parallel to the first p-channel MOS transistor in an analog input period, and... | 10/21/2008 |
| 7414439 | Receiver for a switched signal on a communication line A receiver for receiving a switched signal on a communication line (1), such as a LIN bus, the signal varying between first and second voltage levels (sup, ground). The receiver comprises a comparator (31, 54) responsive to the relative values of the r... | 08/19/2008 |
| 7352221 | Programmable amplifiers with positive and negative hysteresis Programmable dynamic amplifiers with hysteresis are provided. The hysteretic amplifiers have a first input voltage threshold when the output voltage is at a high voltage and a second input voltage threshold when the output voltage is at a low voltage. A multiplexer ... | 04/01/2008 |
| 7348802 | Differential receiver A differential receiver includes a feedback circuit connected between an output node and one common node of the differential receiver to reduce the bandwidth and reject noise for a specific interval of time. In operation, a differential receiver bias current is cont... | 03/25/2008 |
| 7336107 | Comparator circuit and control method thereof This invention provides a comparator circuit which outputs a stable waveform without oscillation even if a gradient of a change of a comparison input signal is small and determines a magnitude of the comparison input signal within a predetermined threshold value reg... | 02/26/2008 |
| 7292083 | Comparator circuit with Schmitt trigger hysteresis character A circuit and a method are provided to produce a novel comparator with Schmitt trigger hysteresis character. The circuit includes a current source which controls the magnitude of current flow through this comparator circuit. It has a first logic device which is turn... | 11/06/2007 |
| 7282965 | Signal detection circuit capable of automatically adjusting threshold value The signal detection circuit of the present invention includes: a comparison section for comparing the absolute value of a voltage of an input differential signal with a threshold voltage corresponding to a first detection level adjustment signal to detect presence/... | 10/16/2007 |
| 7253656 | Calibration circuit for a driver control circuit, and driver control circuit A calibration circuit of a driver control circuit which controls a plurality of input/output drivers of an integrated circuit comprises first and second voltage/current converters, first, second and third comparators and a voltage/current converter circuit. The firs... | 08/07/2007 |
| 7248988 | System and method for reducing temperature variation during burn in Systems and methods for reducing temperature variation during burn-in testing. In one embodiment, power consumed by an integrated circuit under test is measured. An ambient temperature associated with the integrated circuit is measured. A desired junction temperatur... | 07/24/2007 |
| 7242205 | System and method for reducing heat dissipation during burn-in Systems and methods for reducing temperature dissipation during burn-in testing are described. A plurality of devices under test are each subject to a body bias voltage. The body bias voltage reduces leakage current associated with the devices under test. Accordingl... | 07/10/2007 |
| 7239184 | Low power and high efficiency voltage-to-current converter with improved power supply rejection A low power and high efficiency voltage-to-current (V/I) converter designed with few parts and having improved power supply rejection. The V/I converter may include an op-amp, a MOSFET, and a first and second voltage dividers. The first voltage divider circuit may i... | 07/03/2007 |
| 7236031 | Fast bistable circuit protected against random events A bistable circuit includes a first inverter and a capacitive inversion circuit having one input coupled to an output of the first inverter. The capacitive inversion circuit includes a second inverter and a capacitive circuit parallel-coupled to the input and an out... | 06/26/2007 |
| 7233174 | Dual polarity, high input voltage swing comparator using MOS input transistors A differential input comparator circuit comprises an input stage comprising dual polarity input voltages and an output stage adapted to output a differential voltage based on the input voltages, wherein the differential voltage is adapted to be transmitted to a comp... | 06/19/2007 |
| 7230489 | System and apparatus for receiver equalization In some embodiments an apparatus includes an amplifier, a first inverter having an input coupled to an output of the amplifier, and a second inverter having an input coupled to an output of the first inverter and an output, where the output of the second inverter is... | 06/12/2007 |
| 7224201 | Level converter The invention relates to a level converter for converting a signal (in) comprising a first voltage level (Vint) and supplied to the level converter, to a signal (Out) including a second voltage level (Vsupply) differing from the first voltage level (Vint). The level... | 05/29/2007 |
| 7222208 | Simultaneous bidirectional port with synchronization circuit to synchronize the port with another port A simultaneous bidirectional port coupled to a bus includes a synchronization circuit that synchronizes the port with another simultaneous data port coupled to the same bus. The synchronization circuit includes an output driver having an imbalanced output impedance,... | 05/22/2007 |
| 7212043 | Line regulator with high bandwidth (BW) and high power supply rejection ration (PSRR) and wide range of output current Aspects of a method and system for a linear regulator with high bandwidth, PSRR, and a wide range of output current are provided. A method for isolating voltages in a circuit may comprise applying a reference voltage to an isolation resistor based on a supply voltag... | 05/01/2007 |
| 7180798 | Semiconductor physical quantity sensing device A semiconductor physical quantity sensing device to perform electrical trimming at low cost by using a CMOS manufacturing process and a small number of terminals. The semiconductor physical quantity sensing device includes a wheatstone bridge circuit, which is a sen... | 02/20/2007 |
| 7135891 | Current sense shunt resistor circuit Current through a wire is sensed with a shunt resistor and a sense resistor in a current divider circuit. The values of the shunt resistor and sense resistor are related to provide a specified gain ratio to increase a dynamic range of current measurement. The sense ... | 11/14/2006 |
| 7123039 | Testing input/output voltages in integrated circuits An integrated circuit (IC) measures a voltage at an interface of the IC. The IC comprises voltage reference, comparator, and control circuits. The voltage reference circuit provides reference voltages responsive to a control input. The comparator circuit compares a ... | 10/17/2006 |
| 7102421 | Dynamically adjustable on-chip supply voltage generation A voltage regulation scheme for an on-chip voltage generator includes a voltage sensing circuit (VSC) and a configurable buffer circuit (CBC) to regulate the on-chip voltage generator. The CBC generates an output signal that is received by the on-chip voltage genera... | 09/05/2006 |
| 7061280 | Signal detection circuit So as to compare an amplitude of a differential input signal to a threshold, a signal detection circuit includes first and second matched input signal level-shifters, a comparator threshold generation circuit, and a two-stage comparator. The differential input signa... | 06/13/2006 |
| 7057446 | Reference voltage generating circuit and internal voltage generating circuit for controlling internal voltage level Provided are a reference voltage generating circuit and an internal voltage generating circuit for controlling an internal voltage level, where the reference voltage generating circuit includes a distributing unit, a clamping control unit, and a control unit; the di... | 06/06/2006 |
| 7049857 | Asymmetric comparator for low power applications A method and structure for comparing an input signal to a reference signal using a comparator comprises a circuit for setting a trip point of a rising edge of an input signal according to a value of an external voltage reference; and at least two transistors, in the... | 05/23/2006 |
| 6996383 | Digitized automatic gain control system and methods for a controlled gain receiver An automatic gain control (AGC) system (100) for a controlled gain receiver (1101) includes a magnitude generator (160) and a gain corrector (170). The magnitude generator (160) generates a binary voltage squared signal (165... | 02/07/2006 |
| 6988044 | Bus line current calibration Disclosed herein is a method and system for calibrating line drive currents in systems that generate data signals by varying line drive currents and that interpret the data signals by comparing them to one or more reference voltages. The calibration includes varying... | 01/17/2006 |
| 6965227 | Technique for sensing the rotational speed and angular position of a rotating wheel using a variable threshold To detect the rotational speed and angular position of a rotating wheel, a non-contact sensor (e.g., an optical sensor or a Hall sensor) scans scan marks on the wheel, and generates a pulse train. The amplitude of the pulses is compared in a comparator with a variab... | 11/15/2005 |
| 6956408 | Drive device for a light-emitting component A drive device for a light-emitting component including a reference source, which generates a current specification signal specifying a desired current through the light-emitting component, a current mirror circuit, which generates a current equal to a fraction of t... | 10/18/2005 |
| 6949984 | Voltage controlled oscillator having control current compensation A voltage controlled oscillator (600) includes a voltage to current portion (400) that is inversely proportional to the semiconductor processing in order to compensate for variations both in the low-frequency and high-frequency portions of the VCO gain... | 09/27/2005 |
| 6907202 | Burst signal detection circuit A burst signal detection circuit for detecting the arrival of a burst-like signal, which can accurately detect the burst signal against the DC level variations even in the case where the arriving burst signal is a weak signal, is disclosed. A DC variation removing c... | 06/14/2005 |
| 6879645 | Method and apparatus for dynamically varying the noise sensitivity of a receiver A method of dynamically, and automatically, varying the sensitivity of a receiver coupled to receive signals on a carrier medium, such as for example POTS wiring, includes the step of detecting whether more than a predetermined number of noise events, such as for ex... | 04/12/2005 |
| 6879644 | Method and apparatus for automatically determining a peak voltage level for a data signal propagated on a carrier medium A method of automatically determining a peak level of a signal propagated on a carrier medium, such as for example POTS wiring, includes detecting a traversal of a noise threshold level by a data signal. The noise threshold level is determined relative to a noise fl... | 04/12/2005 |
| 6828828 | Dynamic control of switching reference voltage A reference voltage is moved dynamically towards a voltage level of the last received value. The movement takes place over a predetermined fraction of a bit-time. The amount of movement is limited so that successive logical values don't result in an unusable referen... | 12/07/2004 |
| 6798254 | Dynamic control of switching reference voltage A reference voltage is moved dynamically towards a voltage level of the last received value. The movement takes place over a predetermined fraction of a bit-time. The amount of movement is limited so that successive logical values don't result in an unusable referen... | 09/28/2004 |
| 6762623 | High-resolution single-ended source-synchronous receiver Disclosed are novel methods and apparatus for efficiently providing high-resolution single-ended source synchronous receivers. In an embodiment of the present invention, a source-synchronous receiver is disclosed. The receiver includes: a first amplifier to receive ... | 07/13/2004 |
| 6748007 | Method of processing a pulse response with an adaptive threshold and corresponding receiver A method of processing a pulse response with an adaptive threshold and corresponding receiver. According to the method, an adaptive threshold is calculated that is a function of a maximum reached by the pulse response, noise, and a coefficient adjustable between 0 a... | 06/08/2004 |
| 6664900 | Programmable transducer device A programmable transducer device that includes a signal source (e.g., a sensor) and a transducer output to output a transducer output signal and to receive a control signal from an external control unit. The control signal is superposed on the transducer ... | 12/16/2003 |
| 6646479 | Pulse discriminator A non-delayed input signal is provided to a first comparator input and, a delayed input signal is applied to a second comparator input. An offset voltage is applied between the delayed and non-delayed signals at the comparator inputs. When an input pulse ... | 11/11/2003 |
| 6593779 | Tunable circuit for detection of negative voltages The present invention provides a tunable circuit for quickly optimizing an electrical field generated by the F-N tunneling operation. To optimize this electrical field, the charging of a positive charge pump is begun after the charging of a negative charg... | 07/15/2003 |
| 6504403 | Low voltage differential signal (LVDS) input circuit Problems associated with using bipolar differential circuits over a wide common mode voltage range are solved using first and second amplifier circuits 3 and 5, respectively operating over first and second voltage sub-ranges. The low voltage differential ... | 01/07/2003 |
