Famous Patents
In 1608, Dutch eyeglass maker Hans Lipperhey filed the first patent for a working telescope. The patent was denied.
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 |
| 7137024 | System and method for using a learning sequence to establish communications on a high-speed nonsynchronous interface in the absence of clock forwarding A memory system includes a memory hub controller that sends write data to a plurality of memory modules through a downstream data bus and receives read data from the memory modules through an upstream data bus. The memory hub controller includes a receiver coupled t... | 11/14/2006 |
| 7135904 | Jitter producing circuitry and methods To facilitate measurement of the jitter tolerance of circuitry such as serializer/deserializer (SERDES) circuitry, test circuitry is provided that can add jitter to a data signal. The jitter added is preferably controllable and variable with respect to such paramete... | 11/14/2006 |
| 7126397 | Pulse width modulation carrier frequency technique A PWM method and circuit. A temporary PWM signal is generated at a first frequency. The temporary PWM signal includes analog duty cycle information adapted for the first frequency. At least a portion of the analog duty cycle information is converted to digital duty ... | 10/24/2006 |
| 7122982 | DC motor rotation information detecting device A rotation information detection device detects rotation information of a DC motor based on a surge component waveform superimposed on a voltage waveform between the terminals of the DC motor or a current waveform of the DC motor, a circuit is provided which supplie... | 10/17/2006 |
| 7119594 | Duty cycle correction circuit of delay locked loop and delay locked loop having the duty cycle correction circuit A duty cycle correction circuit and a delay locked loop (DLL) including the duty cycle correction circuit, are capable of controlling their operation in order to correctly analyze the cause of generation of a duty cycle error when the duty cycle error is generated i... | 10/10/2006 |
| 7116149 | Duty cycle correction circuit of delay locked loop and the delay locked loop having the duty cycle correction circuit There is provided a Delay Locked Loop (DLL) including a duty cycle correction circuit capable of controlling a duty error, when the duty error is generated in the DLL. The duty cycle correction circuit controls amounts of electric charges accumulated in storage unit... | 10/03/2006 |
| 7116916 | Method and apparatus for compacting data in a communication network A pulse width of a pulse having a nominal pulse width is modulated in accordance with a digital value to be communicated. The number of clock cycles that the modulated pulse width exceeds the nominal pulse width is counted. Various embodiments use a counter to deter... | 10/03/2006 |
| 7116143 | Synchronous clock generator including duty cycle correction A clock generator for generating an output clock signal synchronized with an input clock signal and having a corrected duty cycle. The clock generator includes an input buffer to buffer the input clock signal and generate a buffered clock signal and an output buffer... | 10/03/2006 |
| 7113014 | Pulse width modulator A low-power, synchronous pulse width modulator utilizes a first clock signal at a first frequency to generate a pulse-width modulated signal at the first frequency without requiring a second over sampling clock signal that has a substantially higher frequency by sel... | 09/26/2006 |
| 7110435 | Spread spectrum applications of universal frequency translation Frequency translation and spread spectrum applications of same are described herein. Such applications include, but are not limited to, unified down-conversion and de-spreading, unified up-conversion and spreading, RAKE receivers utilizing unified down-conversion an... | 09/19/2006 |
| 7109769 | PWM signal generator A PWM signal generator comprises a pulse width indication signal generator outputting a pulse width indication signal, and a pulse width adjustment portion receiving the pulse width indication signal. The pulse width adjustment portion outputs an adjusted pulse widt... | 09/19/2006 |
| 7110444 | Wireless local area network (WLAN) using universal frequency translation technology including multi-phase embodiments and circuit implementations Frequency translation and applications of the same are described herein, including RF modem and wireless local area network (WLAN) applications. In embodiments, the WLAN invention includes an antenna, an LNA/PA module, a receiver, a transmitter, a control signal gen... | 09/19/2006 |
| 7110737 | Audio equipment and control method of audio equipment Audio equipment and a method of controlling audio equipment include a switching power amplifier circuit and a controller controlling a switching frequency of the power amplifier circuit. The controller varies the switching frequency of the power amplifier circuit in... | 09/19/2006 |
| 7106533 | Apparatus, system, and method for mitigating signal asymmetry An apparatus, system, and method are disclosed for mitigating signal asymmetry. An analog to digital converter samples an analog signal from a read head and converts the sample to a digital input signal. The digital input signal addresses a look-up module, and the l... | 09/12/2006 |
| 7102432 | Class D amplifier A class D amplifier capable of compressing a dynamic range and reproduction by changing on a real time basis a modulation ratio to a non-linear ratio in accordance with amplitude of an input signal. The class D amplifier including a triangular waveform generation ci... | 09/05/2006 |
| 7103109 | Randomly inverting pulse polarity in an UWB signal for power spectrum density shaping A method eliminates spectral lines in a time hopping ultra wide bandwidth signal. First, a train of pulses is generated from input symbols. The pulses are then modulated in time according to symbols. The modulation can use pulse position modulation and time hopping.... | 09/05/2006 |
| 7102405 | Pulse-width modulation circuit and switching amplifier using the same A pulse-width modulation circuit converts an input signal into a pulse signal to be supplied to a switch amplifying circuit. The modulation circuit includes a comparison signal generator, an amplitude controller for modulating a comparison signal from the signal gen... | 09/05/2006 |
| 7091764 | Duty distortion detector A duty distortion detector comprises a first synchronous mirror delay configured to mirror a first signal with respect to a clock signal to provide a second signal, and a second synchronous mirror delay configured to mirror the second signal with respect to an inver... | 08/15/2006 |
| 7088162 | Circuit generating constant narrow-pulse-width bipolarity monocycles A mono-cycle generating circuit includes a multiplexer, a pulse generating circuit, and a buffer circuit. The multiplexer receives data of a logical 1 or a logical 0, determines whether to generate a positive mono-cycle or a negative mono-cycle, based upon the data,... | 08/08/2006 |
| 7085975 | Method and apparatus for generating expect data from a captured bit pattern, and memory device using same Expect data signals are generated for a series of applied data signals having a known sequence to determine if groups of the data signals were properly captured. A first group of the applied data signals is captured, and a group of expect data signals are generated ... | 08/01/2006 |
| 7081781 | Charge pump for a low-voltage wide-tuning range phase-locked loop A charge pump for a differential phase-locked loop (PLL) is provided. The charge pump includes a current switch configured to voltage to source and sink a current in a complementary fashion from a pair of differential output nodes. The charge pump includes a common-... | 07/25/2006 |
| 7082160 | Pulse width control system for transmitting serial data A pulse width control system includes a serial transmission line for receiving serial data signals and a differential pair having a first transistor and a second transistor. The first and second transistors are connected to the transmission line for respectively pro... | 07/25/2006 |
| 7082171 | Phase shifting applications of universal frequency translation A universal frequency translation module (UFT) frequency translates an electromagnetic (EM) input signal by sampling the EM input signal according to a periodic control signal (also called an aliasing signal). By controlling the relative sampling time, the UFT modul... | 07/25/2006 |
| 7072390 | Wireless local area network (WLAN) using universal frequency translation technology including multi-phase embodiments Frequency translation and applications of the same are described herein, including RF modem and wireless local area network (WLAN) applications. In embodiments, the WLAN invention includes an antenna, an LNA/PA module, a receiver, a transmitter, a control signal gen... | 07/04/2006 |
| 7071633 | Burst pulse circuit for signal lights and method A circuit is provided for over-driving a super-luminescent light emitting diode having a maximum forward continuous current rating. A power supply provides a pulse width modulated signal to an analog memory connected to the power supply and a pulse generator. The pu... | 07/04/2006 |
| 7068087 | Method and apparatus for an improved timer circuit and pulse width detection A method and apparatus for an improved timer circuit and improved pulse width detection includes initiating a ramp timer and setting a timer latch output level substantially simultaneously in response to the occurrence of an input signal. The occurrence of the input... | 06/27/2006 |
| 7068205 | Circuit, method, and apparatus for continuously variable analog to digital conversion A circuit, method and microcontroller apparatus for performing an analog to digital conversion with continuously variable resolution is disclosed. The circuit includes a integrating modulator for converting an analog input signal, corresponding to an input voltage, ... | 06/27/2006 |
| 7068692 | Laser driver circuit for burst mode transmission and manufacturing method A method for making a laser driver circuit for burst mode is described. A continuous mode laser driver circuit can be used in burst mode transmission system by using the method. The method is described as follows. First, a continuous mode laser driver chip is select... | 06/27/2006 |
| 7064510 | Controller arrangement with automatic power down A control circuit is described in which a single input terminal receives digital control signals and analog control signals. In accordance with the principles of the invention, the control circuit includes an automatic power down circuit to place the control circuit... | 06/20/2006 |
| 7064597 | Complementary signal generator A complementary signal generator, for outputting complementary positive-phase and antiphase signals that vary between a first logical value and a second logical value, which includes a signal forming unit for outputting a positive-phase intermediate signal being in ... | 06/20/2006 |
| 7057417 | Voltage conversion circuit and semiconductor integrated circuit device provided with it By using a first delay circuit that delays by a predetermined time a reference pulse signal having a constant pulse width and a second delay circuit that delays by an arbitrary time the output signal of the first delay circuit, a voltage conversion circuit generates... | 06/06/2006 |
| 7057379 | System and method for providing digital pulse width modulation A pulse width modulation system for use in a switching power supply circuit provides high-resolution pulse width modulated signals. The pulse width modulation system is configured to receive a control signal comprising a (m+n)-bit binary word and to provide a pulse ... | 06/06/2006 |
| 7054296 | Wireless local area network (WLAN) technology and applications including techniques of universal frequency translation Frequency translation and applications of same are described herein, including wireless local area network (WLAN) applications such as IEEE Standard 802.11 WLANs. Such applications include, but are not limited to, frequency down-conversion, frequency up-conversion, ... | 05/30/2006 |
| 7053667 | Single wire digital interface A single-wire digital interface for receiving digital data as a stream of pulses, with ‘1’ and ‘0’ logic levels represented with pulses having “first” and “second” pulse widths, respectively. A low-pass filter produces an output that increases at a k... | 05/30/2006 |
| 7049771 | Multi-phase carrier signal generator and multi-phase carrier signal generation method A carrier signal generation section is provided for each of U, V, and W phases, and each of the carrier signal generation sections has an up-down counter for counting clock signals output from a clock generator. An initial value is set for each of the up-down counte... | 05/23/2006 |
| 7049800 | Switching mode voltage regulator and method thereof A switching mode voltage regulator comprises a pulse width modulator and an adjustable one-shot circuit to generate an adjustable signal based on an input voltage, an adjustable voltage, and a PWM signal from the pulse width modulator at light loading to switch a hi... | 05/23/2006 |
| 7049870 | Digital controllers for DC converters A digital controller for a DC converter has a timing and control unit which produces a control pulse signal with varying duty cycle and frequency in accordance with pulse on- and off-times determined by digital values read from a look-up table addressed via an A-D c... | 05/23/2006 |
| 7049778 | Inverter control apparatus and inverter control method An interrupt signal is generated at each of rising timings of PWM signals which are produced on the basis of phase-shifted triangular wave carrier signals for phases, and voltage command values for the phases. At timings of the interrupt signals, A/D conversion of m... | 05/23/2006 |
| 7042266 | Delay circuit and method A delay circuit does not lead to excessive increase in the delay time even if the source voltage drops, and enables to control the delay time from increasing. The delay circuit is designed to delay a logic signal SIN having two logic levels consisting of a low level... | 05/09/2006 |
| 7039372 | Method and system for frequency up-conversion with modulation embodiments A method and system is described wherein an information signals is gated at a frequency that is a sub-harmonic of the frequency of the desired output signal. In the modulation embodiments, the information signal is modulated as part of the up-conversion process. In ... | 05/02/2006 |
