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| Number | Title | Issue Date |
| 7482785 | Transponder with oscillator peak voltage limit A transponder device having an LC oscillator circuit, an energy storage capacitor and an integrated transponder circuit powered by energy from the storage capacitor. The device operates either in a charge mode in which RF energy is received through the LC oscillator... | 01/27/2009 |
| 7400128 | Current-mode bandgap reference voltage variation compensation A circuit and method for reducing the variation of a reference voltage as a function of resistivity ρ in a current-mode bandgap reference circuit generating a reference current that is applied to an output resistor to generate the reference voltage. According to th... | 07/15/2008 |
| 7380150 | Method for selecting an inductive or battery power supply based on the voltage sensed therefrom for a transponder system A power management circuit for a system that has combined power supplies from an inductively coupled circuit and from a battery comprises voltage sensing circuitry for sensing the voltage of each of the power supplies. A switching arrangement selectively connects on... | 05/27/2008 |
| 7378951 | Tire pressure monitoring system A vehicular tire pressure monitoring system, including a transponder unit (10) for each tire to be monitored, the transponder unit having an incorporated RF transmitter (12) and being physically associated with the tire to be monitored. A pressure sens... | 05/27/2008 |
| 7372340 | Precision frequency and phase synthesis with fewer voltage-controlled oscillator stages A clock synthesis circuit) including a phase-locked loop and one or more frequency synthesis circuits is disclosed. The phase-locked loop includes a voltage-controlled oscillator (VCO) having a sequence differential stages o produce equally spaced clock phases. The ... | 05/13/2008 |
| 7359173 | System and method for protecting IC components One embodiment provides a system for protecting at least one component in an integrated circuit (IC). The system includes a disconnect element that is electrically connected in series between a terminal of the IC and the at least one component. The disconnect elemen... | 04/15/2008 |
| 7356424 | Diagnostic compiler for pipeline analog-to-digital converter, method of compiling and test system employing the same The present invention is directed to a diagnostic compiler for use with a pipeline analog-to-digital converter (ADC) having code sequences corresponding to stages thereof. In one embodiment, the diagnostic compiler includes a transition locator configured to determi... | 04/08/2008 |
| 7346100 | Estimating gain and phase imbalance in upconverting transmitters Estimation of gain and phase imbalance of an upconverting transmitter. A transmitter transmits symbols containing vector components of pre-specific relationship in an analog signal. A receiver (also contained in a transceiver along with the transmitter) examines the... | 03/18/2008 |
| 7332898 | Double-edge, stackable PWM with built-in feedforward A method and apparatus for use in a multi-phase power system. The power system is of the type having a plurality of Pulse Width Modulation (PWM) controllers including a first PWM controller and at least one second PWM controller. The first PWM controller generates a... | 02/19/2008 |
| 7313130 | Spectrally compatible mask for enhanced upstream data rates in DSL systems A method and apparatus for providing extended upstream data transmission in a band having a lowest frequency f0 by an end user terminal unit in an asymmetric digital subscriber line communication between a central office terminal unit and the end user ter... | 12/25/2007 |
| 7301746 | Thermal shutdown trip point modification during current limit A thermal shutdown circuit for protecting a main FET that conducts a load current ILOAD. A reference circuit provides a temperature current proportional to temperature. A thermal sensor circuit has a resistor and generates an output signal signaling thermal shutdown... | 11/27/2007 |
| 7298210 | Fast settling, low noise, low offset operational amplifier and method An amplifier (10) includes a first stage (4) including differentially coupled first (Q1) and second (Q2) input transistors and a controlled active load circuit (6). A second stage (8) includes differentially coupled third (Q... | 11/20/2007 |
| 7283343 | Integrated reverse battery protection circuit for an external MOSFET switch A reverse battery protection circuits that provides an integrated reverse battery condition solution for protection of external NMOS switches during the reverse battery condition is disclosed herein. This reverse battery protection circuit minimizes power consumptio... | 10/16/2007 |
| 7283157 | Automatic level control (ALC) for video signals Disclosed are methods and systems for automatic level control (ALC) in a video signal processing system. The new ALC of the invention takes into account the gain applied to the video signal, such as that provided by an associated automatic gain control (AGC). Method... | 10/16/2007 |
| 7282895 | Active dropout optimization for current mode LDOs A DC/DC converter has a linear voltage regulator for reducing or eliminating the output ripple of the converter with a minimum loss of efficiency. The converter comprises a converter stage with a supply voltage input, a converted voltage output and a control input, ... | 10/16/2007 |
| 7265690 | Simplified data recovery from high speed encoded data The present invention facilitates data recovery without requiring selection of a sample phase. The data is recovered by sampling a received signal to obtain a number of samples at a number of phases over a given time period referred to as a bit time. The samples are... | 09/04/2007 |
| 7202643 | High efficiency DC-to-DC synchronous buck converter A DC-to-DC power regulator circuit, such as a synchronous buck DC-to-DC converter circuit, having improved efficiency. A power stage is provided, having an input port for receiving a DC input voltage and having an output port for providing a regulated DC output volt... | 04/10/2007 |
| 7200782 | Clock recovery system for encoded serial data with simplified logic and jitter tolerance The present invention facilitates clock and data recovery for serial data streams by selecting a clock phase for each input data transition and generating a recovered clock. In order to identify data transitions, the received serial data stream is sampled N times pe... | 04/03/2007 |
| 7190541 | Hi-speed preamplifier write driver for hard drive with improved symmetry A write driver (38) produces balanced voltages across head (32) by using the input write data (WDX and WDY) drive transistors of a slower transistor type (typically PNP) on one half of an H-bridge configuration, while transistors of a faster transistor... | 03/13/2007 |
| 7181192 | Handheld portable automatic emergency alert system and method In one embodiment, an automated emergency alert system includes a handheld portable communication device operable to initiate communication over a wireless telecommunications network, a dynamic sensor operable to generate an acceleration profile for the device, and ... | 02/20/2007 |
| 7177611 | Hybrid control of phase locked loops A hybrid digital and analog phase locked loop. A voltage controlled oscillator is provided, having a fine tune input, a coarse tune input and an output. A frequency divider has an input connected to receive a signal provided by the output of the voltage controlled o... | 02/13/2007 |
| 7162684 | Efficient encoder for low-density-parity-check codes Encoder circuitry for applying a low-density parity check (LDPC) code to information words is disclosed. The encoder circuitry takes advantage of a macro matrix arrangement of the LDPC parity check matrix in which a left-hand portion of the parity check matrix is ar... | 01/09/2007 |
| 7138830 | Supply enabled optimization output buffer An output buffer having a first pull-up transistor and a first pull-down transistor connected in series between two nodes of a power supply, their common connection node being connected to the output node. A logic circuit receives an input signal at a logic level an... | 11/21/2006 |
| 7135843 | Switching power supply device The circuit provides a type of switching power supply device that can reduce the ripple voltage generated in the output when switching is performed in the step-down/step-up control mode. Control part (CTRL) operates as follows: corresponding to the detection value o... | 11/14/2006 |
| 7134061 | At-speed ATPG testing and apparatus for SoC designs having multiple clock domain using a VLCT test platform A scan test circuitry design imbedded on an SoC having the scan architecture of a VLCT platform is disclosed herein. This BIST circuitry design that is not limited in the number of scan test ports supported includes at least one scan chain group having a correspondi... | 11/07/2006 |
| 7116169 | Driver apparatus and method of operation thereof A driver apparatus comprising a signal switching circuit coupled for receiving an actuation signal and generating a first and a second control signal in response to the actuation signal; a first control circuit and a second control circuit coupled with the signal sw... | 10/03/2006 |
| 7116158 | Bandgap reference circuit for ultra-low current applications A bandgap reference circuit as may be used in ultra-low current applications is provided. An exemplary bandgap circuit can be configured to generate a positive temperature coefficient without the need for a resistor to offset a negative temperature coefficient. In a... | 10/03/2006 |
| 7116172 | High-swing folded cascode having a novel gain-boost amplifier A circuit topology for gain boosted high-swing folded cascode has been improved to maximize the available dynamic range in applications having low supply voltage requirements. The circuit includes an improved gain boost amplifier that maximizes the available dynamic... | 10/03/2006 |
| 7110204 | Process-insensitive write current generation for a HDD preamplifier writer equipped with parallel output resistive damping The present invention achieves technical advantages as an improved Parallel Damping scheme suitable for very-low-supply preamp operation. The improved Parallel Damping Scheme accurately generates a programmable Iw flowing through the write head while compensating fo... | 09/19/2006 |
| 7109802 | Bipolar differential to single ended transfer circuit with gain boost A differential to single-ended signal transfer circuit that allows increased gain and improved AC performance while reducing power supply voltage requirements. The transfer circuit includes a first operational transconductance amplifier (OTA), a second operational a... | 09/19/2006 |
| 7109697 | Temperature-independent amplifier offset trim circuit An operational amplifier having temperature-compensated offset correction. The amplifier includes an operational amplifier circuit, that has a first input field effect transistor (FET) having a gate connected to receive a first input signal, and a second input FET h... | 09/19/2006 |
| 7064593 | Bus-hold circuit A bus hold circuit that satisfies both the over-voltage tolerance and maximum leakage current ‘Ioff’ specification without incorporating a diode in pull-up path of a bus-hold circuit is disclosed herein. Specifically, the bus-hold circuit includes a f... | 06/20/2006 |
| 7061214 | Single inductor dual output buck converter with frequency and time varying offset control A single-inductor dual-output buck converter and control method that facilitates power conversion by converting a single DC power source/supply into two separate DC outputs, each of which can be configured to provide a selected/desired voltage by selection of respec... | 06/13/2006 |
| 7061217 | Integrated power switching circuit A power switching circuit includes a power MOS transistor that has a maximum source-drain voltage substantially higher than a permissible gate-source voltage, and that has a current path connected in series with a load between first and second supply terminals, and ... | 06/13/2006 |
| 7061325 | Digital compensation for offset and gain correction A system and method for providing digital compensation and correction for an amplifier. The system is configured to provide a digitally compensated representation of a first amplified analog signal indicative of a first parameter based on a digital representation of... | 06/13/2006 |
| 7056767 | Method and apparatus for flip chip device assembly by radiant heating A flip chip semiconductor device having non-solder contact terminals is assembled by securing the chip and substrate with a rapidly thermosetting adhesive. The process is amenable to various bump and substrate materials, and has the advantage of simultaneously adher... | 06/06/2006 |
| 7050463 | Automatic bit-rate detection scheme for use on SONET transceiver An automatic bit-rate detection scheme (30) for use in SONET/SDH transceivers (12, 14) that uses only one clocking frequency (clk), is all digital, and requires less than 250 microseconds to detect a new data bit-rate. The present invention analyzes ev... | 05/23/2006 |
| 7050323 | Ferroelectric memory A nonvolatile memory cell in the form of an SRAM is composed of ferroelectric capacitors and transistors for amplification. The memory cell comprises a first capacitor (FC1) connected between a first terminal (ND1) and a common terminal (CP). A second ... | 05/23/2006 |
| 7046306 | Processing a video signal using motion estimation to separate luminance information from chrominance information in the video signal In one embodiment, a method for processing a video signal includes: (1) receiving and storing luminance and chrominance information for each pixel in a first portion of the signal; (2) receiving luminance and chrominance information for each pixel in a second portio... | 05/16/2006 |
| 7042713 | Slide case with pivotable stand member for handheld computing device A handheld computing device includes a display screen, a main housing portion, a removable case, and a stand member. The main housing retains the display screen. The removable case is adapted to slidably fit over at least part of the main housing. The stand member i... | 05/09/2006 |
