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3M employee and church chorister Art Fry needed something to temporarily mark pages in his hymnal. He was in luck because his colleague, Spencer Silver, accidentally developed a glue that was too weak for other purposes. After initially discouraging consumer response, Post-it Notes became a hit in 1979.
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| Number | Title | Issue Date |
| 7176721 | Signal receiver with data precessing function In a data-precessing receiver, a sampling circuit generates a plurality of samples of an incoming signal and stores the plurality of samples one after another in a first storage buffer. A first subset of the plurality of samples are transferred from the first storag... | 02/13/2007 |
| 7176668 | Switching regulator with advanced slope compensation A switching regulator circuit with improved slope compensation for providing a regulated voltage to a load. The regulator circuit includes a power source and a switch circuit configured to control the coupling of the power source to the load. The operation of the sw... | 02/13/2007 |
| 7176665 | Analog current sense circuit Circuits and related methods for switched step-down and boost DC-to-DC converters have been achieved. Said DC-to-DC converters comprise an inductor current sensing and limiting circuit to prevent the inductor current to exceed a defined limit. Said current sense cir... | 02/13/2007 |
| 7176663 | Control circuit for DC/DC converter A control circuit for controlling an output voltage of a DC/DC converter. The control circuit includes a pulse signal generation circuit which generates a pulse signal for controlling the output voltage of the DC/DC converter, and a drive signal generation circuit w... | 02/13/2007 |
| 7173404 | Auto-switching converter with PWM and PFM selection An auto-switching converter with PWM and PFM selection supplies a boosted DC power to a load through a power switch unit. A starter outputs a starting-enabling signal. An auto PWM/PFM controller is connected to the starter for outputting a selection signal. A contro... | 02/06/2007 |
| 7170271 | Use of charge pump active discharge A DC-to-DC voltage converter having an active charge/discharge circuit enabling the definition of any output voltage within its operating range has been achieved. A comparator compares the output voltage of a voltage converter with a defined reference voltage. This ... | 01/30/2007 |
| 7170707 | Systems and methods for reducing power dissipation in a disk drive including an adjustable output voltage regulator A disk drive system includes an adjustable output (linear or switching) voltage regulator including an output terminal that provides an output voltage. A plurality of loads each include a voltage supply terminal that receives the output voltage. A controller dynamic... | 01/30/2007 |
| 7170267 | Switching regulator with average current mode control A system and method control an output voltage across a load using current mode control to control current through an output filter connected to the load. The output voltage across the load is compared with a reference voltage to generate a reference current signal i... | 01/30/2007 |
| 7170264 | Frequency compensation scheme for a switching regulator using external zero A compensation circuit in a monolithic switching regulator controller being incorporated in a closed loop feedback system of a switching regulator includes an amplifier configured in a unity gain feedback configuration with a first resistor and including a non-inver... | 01/30/2007 |
| 7170195 | Circuits and methods for flexible current partitioning in monolithic switching regulators A monolithic switching regulator that flexibly distributes its output current among its output channels is provided. The monolithic switching regulator includes one or more additional channels that are externally connected to the output channels for providing additi... | 01/30/2007 |
| 7170273 | Power-supply device and hard disk drive using same The object of the invention is to compensate an effect of a voltage drop emerging in output voltage by the equivalent series resistance of a power output filter in a power-supply device. To achieve the object, a power-supply device wherein the power output filter th... | 01/30/2007 |
| 7167382 | Semiconductor device The present invention relates to a semiconductor device that is employed in a switching power supply for which a higher output is required, prevents noise from the coil, transformer, and so forth and implements a high efficiency power supply. By connecting a current... | 01/23/2007 |
| 7167035 | Delay circuitry and method therefor One use for delay adjustment circuit (32), coarse-grain delay offset circuit (34), and fine-grain delay synthesis circuit (36) may be as part of a delay replication circuit (30) used to replicate the frequency versus voltage behavior of a... | 01/23/2007 |
| 7164998 | Method for determining programmable coefficients to replicate frequency and supply voltage correlation in an integrated circuit One use for delay adjustment circuit (32), coarse-grain delay offset circuit (34), and fine grain delay systhesis circuit (36) may be as part of a delay replication circuit (30) used to replicate the frequency versus voltage behavior of a... | 01/16/2007 |
| 7161334 | Modular high voltage power supply for chemical analysis A high voltage power supply for use in a system such as a microfluidics system, uses a DC—DC converter in parallel with a voltage-controlled resistor. A feedback circuit provides a control signal for the DC—DC converter and voltage-controlled resistor so as to r... | 01/09/2007 |
| 7161328 | Controller of alternator for vehicle An alternator 1 connected to a battery mounted in a vehicle, a regulator 20 including a regulator IC 4 for adjusting a power generation voltage of the alternator 1, and an ECU connected to the regulator 20 are provided. A DF signal... | 01/09/2007 |
| 7158042 | Voltage regulator for physically remote loads The invention relates to a voltage regulator for physically remote loads (2) with an adjustable power supply (9) for the load (2), with a measurement device (11, 12) assigned to the load (2) for creating a digital measurement signa... | 01/02/2007 |
| 7157947 | Power supplies noise detector for integrated circuits In some embodiments, a circuit includes a reference current source to provide a substantially noise free current signal, and a detector coupled to one or two power supplies. In some embodiments, a method includes receiving a substantially noise free current signal, ... | 01/02/2007 |
| 7157943 | Frequency selection of switch mode power converters via softstart voltage level A switch mode power converter that limits the in-rush current at start-up and reduces the occurrence of output voltage overshoot over a range of switching frequencies. The converter includes at least one Soft-Start (SS)/Frequency-Select(FS) input, at least one oscil... | 01/02/2007 |
| 7154253 | Digitally controlled modular power supply for automated test equipment A digitally controlled hybrid power module is controlled by a programmable controller. The hybrid power module includes a digitally controlled switching supply with an output coupled to an input of a digitally controlled linear voltage regulator. Independent control... | 12/26/2006 |
| 7151363 | High PSRR, fast settle time voltage regulator A voltage regulator including a high-speed feedback loop operating to provide rapid settling time and a large Power Supply Rejection Ratio (PSRR). The high-speed feedback loop includes a reservoir capacitor that stores charge based on a charging current. The charge ... | 12/19/2006 |
| 7152010 | Calibrating an analog-to-digital converter using a test signal with a precise DC voltage A self-calibrating sigma-delta converter (SCADC) functions in a calibration mode and in an operational mode. In the calibration mode, a test circuit of the SCADC generates test signals that are periodic rectangular voltage waveforms. Each test signal has a dc compon... | 12/19/2006 |
| 7148670 | Dual mode buck regulator with improved transition between LDO and PWM operation A dual mode regulator, having a high current PWM regulator mode and a low current LDO regulator mode, briefly changes the operating parameters of the PWM and LDO regulators during a transition between modes. Changes during the transition period include: raising the ... | 12/12/2006 |
| 7148669 | Predictive digital current controllers for switching power converters The present invention provides a method for producing a controlled output voltage for a switching power converter under current control using pulse width modulation, the switching power converter including a predictive digital current-mode controller and a digital p... | 12/12/2006 |
| 7148667 | Power supply apparatus In a power supply apparatus that is so configured as to produce from an input voltage an output voltage Vo within a predetermined permissible variation range, the output voltage Vo is so controlled as to decrease within the permissible variation range as the output ... | 12/12/2006 |
| 7145317 | Constant frequency duty cycle independent synthetic ripple regulator A synthetic ripple generator that controls conversion of an input voltage to an output voltage while maintaining a relatively constant switching frequency including a ripple capacitor and resistor, a transconductance amplifier circuit, an output error circuit, a fre... | 12/05/2006 |
| 7145316 | Control circuit for monitoring and maintaining a bootstrap voltage in an N-channel buck regulator A control circuit is incorporated in a switching regulator for monitoring and maintaining a bootstrap voltage to allow the switching regulator to operate at or near 100% duty cycle. The control circuit includes a circuit receiving the bootstrap voltage and generatin... | 12/05/2006 |
| 7145312 | Battery coupled to adapter and tip A system has an adapter/charger to receive power from a power source and output a first DC power signal. A universal battery receives the first DC power signal directly from the adapter/charger and to supplies a second DC power signal, and the universal battery incl... | 12/05/2006 |
| 7142401 | Detecting overcurrents in a switching regulator using a voltage dependent reference A switching regulator provides energy to an inductor-capacitor combination that supply a DC voltage as an output. The presence of a current that can be significantly lower than the typical load current is detected using a pulse signal that provides a measure of the ... | 11/28/2006 |
| 7141957 | Converter circuit and control method for same In known converter circuits switching losses occur, which are caused by reverse-recovery currents of a freewheeling diode. To reduce said switching losses it is proposed by the invention to drive the switching elements such that, upon switching from the second to th... | 11/28/2006 |
| 7141956 | Digital output voltage regulation circuit having first control loop for high speed and second control loop for high accuracy A switched mode voltage regulator has a digital control system that includes dual digital control loops. The voltage regulator comprises at least one power switch adapted to convey power between respective input and output terminals of the voltage regulator and a di... | 11/28/2006 |
| 7138790 | Control device for controlling a charging switch in a switching regulator and method for controlling a charging switch A control device for controlling a charging switch in a switching regulator with an inductance, a filter capacitance and a diode comprises a clock generator for providing an operating clock, an output voltage detection means and an inductance current detection means... | 11/21/2006 |
| 7138789 | Multiphase converter with zero voltage switching A multiphase DC-to-DC converter includes at least two phase circuits each having upper and lower power switches and a front-end inductor that is operative for forming a resonant tank circuit with the phase circuits to ensure zero voltage switching and minimizing pow... | 11/21/2006 |
| 7138788 | Switch controller for a power control system and method therefor In one embodiment, a multiphase power control system uses two control lines from a PWM section to control the switch controllers of the system. The two control signals contain power control information in addition to timing information. The switch controller uses th... | 11/21/2006 |
| 7135844 | Control circuit for DC/DC converter A control circuit for a DC/DC converter which includes a main switching element, a sub switching element, and a reactor in order to convert a DC input voltage to a DC output voltage. The control circuit comprises a clock signal generator for generating a clock signa... | 11/14/2006 |
| 7135840 | DC/DC converter circuit and method for DC/DC conversion A DC/DC converter circuit including an inductance 10, two controllable switches 12, 14 and a controller 16 for controlling the switches 12, 14 is configured so that it is able to operate in two permanently alternating operating time phase... | 11/14/2006 |
| 7134030 | Circuit controlling power supplied to a CPU based on only a power signal or a combination of a power signal and an adjustment signal A power voltage control circuit for a CPU. The CPU has at least one power indication pin to output a power indication signal. In the control circuit, a register stores an adjustment signal, and combination unit adds the power indication signal and the adjustment sig... | 11/07/2006 |
| 7133921 | Portable devices for different control interfaces A communications interface system and method for a plasma generator is provided. The communications interface system includes a power delivery system component that has a standard POD interface for communicating information that complies with a first protocol. A por... | 11/07/2006 |
| 7129800 | Compensation technique to mitigate aging effects in integrated circuit components A method and apparatus for compensating for age related degradation in the performance of integrated circuits. In one embodiment, the phase-locked loop (PLL) charge pump is provided with multiple legs that can be selectively enabled or disabled to compensate for the... | 10/31/2006 |
| 7126388 | Power MOSFET driver and method therefor In one embodiment, a power MOSFET driver uses two different voltages for the operating voltage of the two output drivers of the power MOSFET driver. ... | 10/24/2006 |
