Celebrity Inventors
Actor Marlon Brando has four patents, all named "Drumhead tensioning device and method."
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 8169238 | Capacitance to frequency converter A capacitance to frequency converter includes a switching capacitor circuit, a charge dissipation circuit, a comparator, and a signal generator. The switching capacitor circuit charges a sensing capacitor and transfers charge from the sensing capacitor to a circuit ... | 05/01/2012 |
| 7532044 | Photodetector An I/F converter 10 contained in a photodetector is provided with a first comparing portion 111, a second comparing portion 112, a current mirror circuit 14, an SR type flip-flop circuit 16, a buffer amplifier... | 05/12/2009 |
| 7394296 | Apparatus and method for automatically offsetting linear deviation of V/F converter An apparatus and method for automatically offsetting the linear deviation of a V/F converter, the offset adjust pin of which is connected to a fixed resistance, and the frequency output pin of which is connected to a microcontroller unit (MCU) via an opto-isolator, ... | 07/01/2008 |
| 7332944 | Frequency-controllable oscillator A frequency-controllable oscillator, having an oscillation device in which the oscillation frequency is controlled on the basis of a feedback current or voltage; a constant current source circuit; a charge device which charges a capacitor with a constant current fro... | 02/19/2008 |
| 7288983 | Method and circuit for providing a temperature dependent current source A programmable temperature compensation circuit having a bandgap circuit for generating a first temperature-independent voltage reference signal, VREF and a second temperature-dependent voltage signal, VTEMP. A two-input buffer amplifier is cou... | 10/30/2007 |
| 7279941 | Voltage-frequency conversion apparatus and method of changing reference voltage thereof A voltage-frequency conversion apparatus which comprises a variable current source for charging a capacitor; a current amount adjustment circuit which has a first resistor for applying a first voltage and a second resistor for applying a second voltage and adjusts t... | 10/09/2007 |
| 7276944 | Clock generation circuit and clock generation method A clock generation circuit and a clock generation method are provided, which are spread spectrum clock generation and accurate phase control of a reference clock signal and an output clock signal. An input divider unit 70 divides an input clock signal CLKR by... | 10/02/2007 |
| 7276925 | Operating an integrated circuit at a minimum supply voltage In one embodiment, an integrated circuit comprises at least one measurement unit configured to generate an output indicative of a supply voltage at which the integrated circuit is operable for a given operating frequency and a control unit coupled to receive the out... | 10/02/2007 |
| 7271647 | Active polyphase filter The present invention provides methods and apparatuses for a polyphase filter, comprising: a first and second cascoded differential amplifiers configured to receive a first and second differential signals, the first cascoded differential amplifier having a first res... | 09/18/2007 |
| 7268718 | Capacitor-based digital-to-analog converter for low voltage applications A digital-to-analog converter (DAC) compatible with CMOS technology and operable in low voltage applications. An input capacitor stores a charge sample according to a digital input signal and a previous output analog signal. An analog output circuit has a feedback c... | 09/11/2007 |
| 7268685 | Radio frequency identification tag for transmitting temperature data and method therefor A radio frequency identification tag, used in a radio frequency identification system, includes an antenna unit for receiving an external magnetic wave to generate an induced current; a driving voltage generating unit for converting the induced current into a consta... | 09/11/2007 |
| 7262640 | Voltage-frequency conversion apparatus A voltage-frequency conversion apparatus which has a variable current source for charging a capacitor; a current amount adjustment unit that adjusts a current amount of the variable current source for charging the capacitor to be corresponding to a differential volt... | 08/28/2007 |
| 7262560 | Regulating a light source using a light-to-frequency converter An apparatus and method thereof for regulating a light source are described. The apparatus includes a light-to-frequency converter that converts light received from the light source into a signal having a corresponding frequency. A circuit coupled to the light-to-fr... | 08/28/2007 |
| 7263344 | Method for reducing IM2 noise in a down conversion circuit The present invention relates generally to communications, and more specifically to a method and apparatus for minimizing DC offset and second-order modulation products (IM2 noise) while demodulating RF signals. The principle of the invention can be applied to diffe... | 08/28/2007 |
| 7256623 | Frequency programmable feed-forward oscillator and triangle wave generator A frequency programmable feed forward oscillator and triangular wave generator is disclosed having a first input for receiving an input voltage and a second input for receiving an input current. Circuitry within the device responsive to the input voltage scales the ... | 08/14/2007 |
| 7225349 | Power supply voltage droop compensated clock modulation for microprocessors A voltage source droop compensated clock modulation for microprocessors is described. Specifically, the circuit reduces the clock frequency if a voltage source droop is detected. ... | 05/29/2007 |
| 7224563 | Method and device for circuit control One disclosed embodiment of the invention is directed to circuit control that comprises sensing a delivered voltage to a portion of an integrated circuit, determining an appropriate frequency for the portion of the integrated circuit, and providing the appropriate f... | 05/29/2007 |
| 7221130 | Switching power converter employing pulse frequency modulation control A method for controlling a switching power converter provides an efficient algorithm for controlling the output voltage across loads that are relatively light with small transients. When the output voltage is at or below a predetermined first magnitude, a determinat... | 05/22/2007 |
| 7215165 | Clock generating circuit and clock generating method The invention provides a clock generating circuit for generating a spectrum spread clock and carrying out high-speed and accurate phase control of a reference clock signal and an output clock signal, which is composed of compact circuits, and a method for generating... | 05/08/2007 |
| 7212627 | Line interface with analog echo cancellation A line interface performs echo cancellation without the use of a hybrid filter network and includes a transmit path having a line driver, a single matching network terminating the line, and a single transformer. The transformer uses split windings on both the primar... | 05/01/2007 |
| 7212042 | Below-ground sensor interface amplifier A below-ground sensor interface amplifier is powered by no negative supply voltage, but the amplifier nevertheless senses an input voltage signal below ground potential. The amplifier outputs an output voltage signal that varies proportionately to the input voltage.... | 05/01/2007 |
| 7209015 | Oscillator circuit having a temperature dependence An oscillator circuit includes a current source for generating a current depending on the ambient temperature, a plurality of oscillators for oscillating at respective periods depending on the current from the current source and based on different relations between ... | 04/24/2007 |
| 7202712 | Multiphase resonant pulse generators A multiphase resonant pulse generator (74) has N groups of N−1 switches (44,46,48) which, when activated, form N paths from a power supply (Vdc) to ground or a reference voltage. Here N is a positive integer greater than 2. Each of the paths includes... | 04/10/2007 |
| 7155617 | Methods and systems for performing dynamic power management via frequency and voltage scaling Methods and systems are provided for dynamically managing the power consumption of a digital system. These methods and systems broadly provide for varying the frequency and voltage of one or more clocks of a digital system upon request by an entity of the digital sy... | 12/26/2006 |
| 7139613 | Implantable medical device communication system with pulsed power biasing An implantable medical device communication system communicates information between an implantable medical device and at least one slave device by way of a two-wire bus. Slave devices may include remote sensors, actuators and other implantable medical devices. The i... | 11/21/2006 |
| 7118273 | System for on-chip temperature measurement in integrated circuits A thermal sensor providing simultaneous measurement of two diodes. A first diode and a second diode are coupled to a first current source and a second current source, respectively. The ratio of the currents provided by the two sources is accurately known. The voltag... | 10/10/2006 |
| 7116961 | Image rejection quadratic filter An image rejection quadratic filter is tunable to filter image frequencies over a wide band. In one embodiment, the image rejection filter includes in-phase and quadrature phase mixers. The image rejection has a fractional transfer function. The image rejection filt... | 10/03/2006 |
| 7113031 | Audio amplifier circuit with suppression of unwanted noise when powered on from standby A power amplifier circuit comprising at least one first amplifier having a first input receiving an input voltage through at least one first coupling capacitor and connected to an output of the first amplifier, and having a second input, separate from the first inpu... | 09/26/2006 |
| 7106120 | PCMO resistor trimmer Using programmable resistance material for a matching resistor, a resistor trimming circuit is designed to reversibly trim a matching resistor to match a reference resistor. The programmable resistance materials such as metal-amorphous silicon metal materials, phase... | 09/12/2006 |
| 7106109 | Biasing circuit and voltage control oscillator thereof A biasing circuit and a voltage control oscillator thereof are provided. The biasing circuit comprises a compensation circuit, a delay circuit and a comparison circuit. In the biasing circuit, the compensation circuit compensates a first differential voltage that is... | 09/12/2006 |
| 7102465 | Frequency discrete LC filter bank An inductive (“L”)-capacitive (“C”) filter bank has application for use in a television receiver. The LC filter includes inductors configured in at least one inductive (“L”) bank, and capacitors configured in at least one capacitive (“C”) bank. The i... | 09/05/2006 |
| 7088202 | Methods and apparatus for an improved discrete LC filter A discrete inductive-capacitive (LC) filter selects between at least two inductor banks to tune the LC filter. The filter receives an input signal that includes one or more bands of frequencies. A control signal selects a band of frequencies for processing. A first ... | 08/08/2006 |
| 7085657 | Signal processing unit for a pressure switch or the like A signal processing unit for a pressure switch or the like, comprising a sensor element, such as a strain gauge bridge, to supply an analog electrical signal that corresponds to a pressure; a signal processing unit which is connected downstream of the sensor element... | 08/01/2006 |
| 7084691 | Mono-polarity switchable PCMO resistor trimmer Using programmable resistance material for a matching resistor, a resistor trimming circuit is designed to reversibly trim a matching resistor to match a reference resistor. The programmable resistance materials such as metal-amorphous silicon metal materials, phase... | 08/01/2006 |
| 7078940 | Current comb generator The current comb generator periodically applies current spikes to a power supply signal in the time domain to produce a series of current spikes at different frequencies in the frequency domain. ... | 07/18/2006 |
| 7075345 | Frequency converter having low supply voltage A frequency converter converts a first current signal having a first frequency into a second current signal having a second frequency different fro the first frequency. The frequency converter includes an adder and a switching circuit. The adder adds the first curre... | 07/11/2006 |
| 7069117 | Electrical power distribution control systems and processes In one aspect, the present invention includes a power adjustment apparatus. The apparatus includes a local controller and one or more sensors distributed within a power grid. The sensors are configured to assess conditions including power consumption and delivered v... | 06/27/2006 |
| 7061295 | Ring oscillator for digital multilevel non-volatile memory An oscillator that can be used within a high voltage generation and regulation system for non-volatile memory. The system may comprise a charge pump that may have at least one pump and an oscillator. In one aspect the oscillator provides clock signals to the pump. T... | 06/13/2006 |
| 7061296 | Circuit arrangement for generating a digital clock signal A circuit arrangement for generating a digital clock signal which manages without a crystal oscillator and has a low current consumption. The circuit arrangement includes: a transistor circuit having a first, n-channel FET transistor and a second, p-channel FET tran... | 06/13/2006 |
| 7057423 | Current-voltage transforming circuit employing limiter circuit A current-voltage transforming circuit used with a photo detector integrated circuit includes a photo detector to detect a photo signal (laser beam signal) to generate a photo current, an amplifier to amplify the photo current, which corresponds to the photo signal,... | 06/06/2006 |
