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| Number | Title | Issue Date |
| 7982513 | Signal oversampling for improved S:N in reflector movement system Eight or more transition points are generated during a given period, and are used in tracking movement of an interferometer reflector. Duty cycles of generated square waves are used to establish precise intervals between the transition points, and precise wave-phase... | 07/19/2011 |
| 7750704 | Providing a low phase noise reference signal A reference clock generator includes an oscillator to generate a periodic signal, a shaping circuit and a filter. The shaping circuit shapes the periodic signal to generate a clock signal. The filter is located between the oscillator and the shaping circuit. ... | 07/06/2010 |
| 7679413 | Signal oversampling for improved S:N in reflector movement system Eight or more transition points are generated during a given period, and are used in tracking movement of an interferometer reflector. Duty cycles of generated square waves are used to establish precise intervals between the transition points, and precise wave-phase... | 03/16/2010 |
| 7436234 | Signal oversampling for improved S:N in reflector movement system Eight or more transition points are generated during a given period, and are used in tracking movement of an interferometer reflector. Duty cycles of generated square waves are used to establish precise intervals between the transition points, and precise wave-phase... | 10/14/2008 |
| 7372312 | Pulse width modulation generating circuit A pulse width modulation (PWM) generating circuit includes a first comparator, a first resistor, a second resistor, a third resistor, a fourth resistor, a capacitor, and a diode. The first resistor and the second resistor are connected in series between a voltage in... | 05/13/2008 |
| 7348863 | Simple time domain pulse generator A pulse generating circuit and related method, for producing extremely narrow pulses for use in monolithic microwave integrated circuits (MMICs) for radar, high-speed sampling, pulse radio and other applications. A sinusoidal input signal is supplied to two nonlinea... | 03/25/2008 |
| 7158067 | Analog to digital converter using sawtooth voltage signals with differential comparator An analog to digital converter includes a resistor-divider network including a plurality of resistors, an arbel channel circuit configured to generate a voltage sawtooth signal as an output, a dc-offset disposed to couple a node of the resistor-divider network and t... | 01/02/2007 |
| 7135907 | Clock signal distribution utilizing differential sinusoidal signal pair A differential sinusoidal signal pair is generated on an integrated circuit (IC). The differential sinusoidal signal pair is distributed to clock receiver circuits, which may be differential amplifiers. The clock receiver circuits receive the differential sinusoidal... | 11/14/2006 |
| 7120408 | Differential signal squelch detection circuit and method An electrical circuit detects a “squelch,” or “out-of-band,” state of a differential signal pair having a positive (“p”) signal line and a negative (“n”) signal line. In one embodiment of the invention, a first and a second comparator each have posit... | 10/10/2006 |
| 7071757 | Clock signal distribution utilizing differential sinusoidal signal pair A differential sinusoidal signal pair is generated on an integrated circuit (IC). The differential sinusoidal signal pair is distributed to clock receiver circuits, which may be differential amplifiers. The clock receiver circuits receive the differential sinusoidal... | 07/04/2006 |
| 7012824 | Voltage converting method and voltage converting apparatus using large electrolytic condenser A voltage converting method and a voltage converting apparatus using a large electrolytic condenser are provided. In the method according to an embodiment of the invention, when the level of an input alternating voltage is equal to or greater than a first predetermi... | 03/14/2006 |
| 6961850 | Method and system for minimizing pirating and/or unauthorized copying and/or unauthorized access of/to data on/from data media including compact discs and digital versatile discs An improved embedded signaling apparatus and method of embedding data into audio signals occurring at substantially zero decibel levels is disclosed. Embedding is accomplished at such low inaudible levels by modifying an embedded signaling encoder with a dither gene... | 11/01/2005 |
| 6400205 | Diode detection circuit A diode detection circuit is capable of obtaining an ideal rectification voltage even the case of a minute input high-frequency voltage. The circuit includes a first diode that accepts an AC signal; a first parallel circuit consisting of a resistor and a ... | 06/04/2002 |
| 6384620 | Signal deciding apparatus A signal deciding apparatus which can obtain a stable digital signal OUT irrespective of an amplitude and a duty ratio of an input signal IN is provided. The input signal IN is amplified by inverters (51 to 53 and 8) and outputted as... | 05/07/2002 |
| 6194936 | Pulse generator provided with a duty-factor limiting function In a pulse generator, a sawtooth-shaped wave generator circuit generates a sawtooth-shaped wave by charging and discharging a capacitor. The sawtooth-shaped wave is fed to a comparator that performs pulse-width modulation on it in accordance with the volt... | 02/27/2001 |
| 6184736 | Sinusoidal radio-frequency clock distribution system for synchronization of a computer system A clock generation system generates and distributes sinusoidal signals. Also, the clock lines are configured and shielded in a novel manner so as to provide the same overall propagation characteristics for the clock signals in all the lines, and to minimi... | 02/06/2001 |
| 6091272 | Low power clock squarer with tight duty cycle control The present invention is directed to a method and apparatus for producing a square wave output signal with a clock circuit that possesses characteristics of low current consumption, relatively tight duty cycle control, and versatility over a wide range of... | 07/18/2000 |
| 6031404 | Analog-signal to square-wave-signal reshaping system with offset compensation An analog-signal to square-wave-signal reshaping system for threshold-dependent reshaping of an analog input signal to a square wave signal; comprising an offset-inflicted reshaping circuit having a signal input adapted to be fed with the analog input sig... | 02/29/2000 |
| 5883536 | Digital phase detector device ultilizing dither generator A phase detector provides a digital output having a linear relationship to the phase difference between a reference signal and an applied input signal. The phase detector counts the number of cycles of the reference signal within a time interval determine... | 03/16/1999 |
| 5847570 | Low jitter trigger circuit for electro-optic probing apparatus A trigger circuit is composed of a frequency multiplying portion which receives an electric signal to be measured and multiplies its repetitive frequency so as to output a multiple signal, a comparing portion which receives this multiple signal and output... | 12/08/1998 |
| 5821790 | Power line synchronization conditioner A circuit for generating a time base signal from a power line signal produced by an alternating current (AC) power source. The circuit sets the output of a latch to a first state when a positive peak of the power line signal is detected, and sets the outp... | 10/13/1998 |
| 5767743 | Radio frequency power amplifier having a tertiary harmonic wave feedback circuit An RF power amplifier includes an input-side tertiary harmonic wave control circuit and an output-side tertiary harmonic wave control circuit, respectively connected to a gate and a drain of a signal amplification FET. The RF power amplifier also includes... | 06/16/1998 |
| 5656961 | High frequency clock signal distribution with high voltage output A clock signal is distributed over a circuit board and across a connector as a sine wave. A circuit located near the clocked circuitry converts the sine wave into a same frequency square wave for use by the clocked circuitry. The output stage of the conve... | 08/12/1997 |
| 5554947 | Wave-shaping circuit with feedback circuit for adjusting central voltage level of input alternating signal A wave-shaping circuit is provided which converts an input alternating signal into a pulse signal. The wave-shaping circuit includes a level-adjusting circuit which is designed to integrate the input alternating signal to determine a central level of ampl... | 09/10/1996 |
| 5548219 | Digital two frequency generator for use in borehole heterodyne measurement systems A system for generating two or more frequencies for a borehole heterodyne measurement system for use in measuring electromagnetic propagation properties of rock is disclosed. A precision clock oscillator supplies a binary counter with clock signals. The o... | 08/20/1996 |
| 5528180 | Steerable pulse phase controller An impedance-steerable circuit for an industrial phase controller inserts precise steerable trigger pulses in the sine and cosine excursions of a sine wave of high-energy capacitive and related discharge systems. Multiple pulses and Barkhausen effects are... | 06/18/1996 |
| 5519352 | Integrator system with variable gain feedback An integrating circuit includes first and second amplifiers for use during a zero-integrate mode and a X10 mode, respectively. The first amplifier is a low gain amplifier to ensure stability, whereas the second amplifier is a high gain amplifier to improv... | 05/21/1996 |
| 5504446 | AC voltage clipper in MOS-technology AC voltage clipper for a MOS-circuit having two input terminals (In1, In2) receiving an ac supply voltage, wherein one input terminal (In1) is connected to a point of common voltage through a first MOS-transistor (MCL41) and the other input terminal (In2)... | 04/02/1996 |
| 5500627 | Precision duty cycle phase lock loop An up/down counter within a phase locked loop is gated to count high frequency clock pulses during the first cycle of the input signal. Upon detection of a transition in the input signal indicating the end of the first cycle, the direction of the count is... | 03/19/1996 |
| 5498985 | Dual comparator trigger circuit for glitch capture A glitch trigger circuit for measuring glitches that appear on power line signals includes two comparators and two independently controllable voltage trigger levels to allow proper trigger on glitches of unknown polarity. A high pass filter rejects the po... | 03/12/1996 |
| 5477171 | Full wave rectifier using current mirror bridge A full wave rectifier includes an amplifier having a minus input, a plus input and an amplifier output; an input resistor connected between a circuit input and the minus input; and a current bridge having an output terminal connected to the circuit output... | 12/19/1995 |
| 5469091 | Data slice circuit A data slice circuit is provided for slicing the caption data or the likes included in a television signal at an optimum voltage. A product between a clock-run signal sliced by a comparator at a tentative reference voltage and a clock signal which is 16 t... | 11/21/1995 |
| 5442313 | Resolution multiplying circuit Peak and valley voltages of signals from at least two analog sensors are held by the circuit. A plurality of threshold voltages is generated from the previous peak and valley voltages of the respective analog sensors. The signal of each sensor is compared... | 08/15/1995 |
| 5414354 | Apparatus and method for generating a substantially rectangular output signal A squaring amplifier circuit (300) generates a substantially rectangular output signal from an a.c. input signal. An amplifier stage (303) is biased at a low quiescent current by a current source network (305) and a coupling network (306). Since the ampli... | 05/09/1995 |
| 5394023 | Circuit arrangement for genrating square-shaped signals A first input signal has successive zero amplitude crossings. A first comparator generates a first bilevel output signal responsive to the first input signal. The first comparator has a hysteresis characteristic which is switched on at each said zero cros... | 02/28/1995 |
| 5353019 | Process for monitoring the output signals from a transmitting device By rectifying, comparing and X-OR gating two signals (A,B) from a transmitting device (G) that are to be sinusoidal and have a corresponding rotational frequency, of the same amplitude, and ideally offset from one another electrically by 90°, a binary si... | 10/04/1994 |
| 5315260 | Apparatus for converting an AC component of a signal to a square wave An output signal of a magnetoelectrical transducer of a capstan DC motor used in a magnetic tape recorder includes a DC offset voltage. The output signal of the transducer is coupled to a non-inverting input of a first operational amplifier. The output si... | 05/24/1994 |
| 5200648 | Emulator circuit and method for generating CMOS level clock input A method and apparatus for generating a CMOS level clock signal from RC components for use in a microcontroller. The emulator includes an emulation chip and an emulation circuit. The emulation chip includes means for supporting RC clock input to accuratel... | 04/06/1993 |
| 5157277 | Clock buffer with adjustable delay and fixed duty cycle output A clock buffer circuit for a computer system, and a computer system incorporating the same, are disclosed. The clock buffer circuit includes a differential input buffer for receiving the input clock signal, with its output coupled to the input of a phase ... | 10/20/1992 |
| 5144233 | Crankshaft angular position voltage developing apparatus having adaptive control and diode control Apparatus for developing a series of square-wave pulses from an alternating voltage that is generated in the pick-up coil of a variable reluctance sensor that is associated with a slotted wheel that is driven by the crankshaft of an internal combustion en... | 09/01/1992 |
