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7595675 Duty cycle measurement method and apparatus that operates in a calibration mode and a test mode  
The disclosed methodology and apparatus measure the duty cycle of a reference clock signal that a clock circuit supplies to a duty cycle measurement (DCM) circuit. In one embodiment, the DCM...
7594150 Fault-tolerant architecture of flip-flops for transient pulses and signal delays  
A method and apparatus for a structure of a flip-flop that is tolerant to the noise pulses occurring due to the presence of crosstalk faults by sampling the input data multiple times before and...
7463070 Switching device for driving LED array by pulse-shaped current modulation  
A circuit drives an LED array and controls the brightness of the LED array by regulating the current flowing through the array. The LED array is driven by a pulse-shaped current of which the mean...
7420400 Method and apparatus for on-chip duty cycle measurement  
The disclosed methodology and apparatus measures the duty cycle of a reference clock signal that a clock circuit supplies to a duty cycle measurement (DCM) circuit located “on-chip”, namely on...
7391241 Bidirectional deglitch circuit  
A deglitch circuit utilizes a first flip-flop coupled to the input signal and a second flip-flop coupled to the output of a circuit with feedback from the output to gates to control first and...
7330061 Method and apparatus for correcting the duty cycle of a digital signal  
The disclosed methodology and apparatus measure and correct the duty cycle of a reference clock signal that a clock circuit supplies to a duty cycle measurement (DCM) circuit. In one embodiment,...
7317340 Glitch free reset circuit  
An apparatus for compensating for glitch occurrence in a reset signal that is applied in an integrated circuit, includes: a logic stage capable to process an incoming signal and a delayed incoming...
7256632 Pulse width modulation (PWM) controlling module and method for adjusting a PWM signal thereof  
A pulse width modulation (PWM) controlling module, includes: a PWM controller, a load detector, and an adjusting module. The PWM controller generates a PWM signal that is utilized for controlling a...
7245160 Short pulse rejection circuit  
A short pulse rejection circuit is disclosed. The circuit comprises a signal transition detecting circuit, a control signal generating circuit, a capacitor resetting and charging circuit, and a...
7200187 Modulator for digital amplifier  
A digital modulator for driving a digital amplifier. The digital modulator has a subtractor which receives a digital input signal. A filter amplifier receives the output of the filter amplifier and...
7098715 Programmable dual-edge triggered counter  
A counter for synthesizing clock signals with minimal jitter analyzes an ongoing count to determine whether the rising edge of an output clock should be triggered by the rising edge or falling edge...
7068734 Passive redundant digital data receiver with schmitt-trigger  
A passive coupling structure constructed using printed circuit board traces is used to separate the low and high frequency components of an incoming digital signal. The low and high frequency...
6992515 Clock signal duty cycle adjust circuit  
Systems and methods for independently adjusting a duty cycle of an input clock signal in an IC to compensate for uncertainties and distortions in the logic signals resulting from the logic signals...
6960951 Circuit for detecting a logic transition with improved stability of the length of a detection signal pulse  
A circuit for detecting a logic transition is proposed. The circuit includes an input terminal for receiving a logic signal, an output terminal for generating a detection signal, two capacitors, in...
6833736 Pulse generating circuit  
A pulse generator circuit includes a first logic means, a second logic means, a first delay means, and a second delay means. The first logic means is for receiving an input clock signal. The first...
6549571 Circuitry and method for duty measurement  
Duty measuring circuitry of the present invention includes a pulse detecting circuit for detecting at least one of a convex pulse width and a concave pulse width included in an input data signal. A...
6529046 Minimum pulse width detection and regeneration circuit  
A minimum pulse width detection and regeneration circuit is achieved. The circuit includes, first, a pulse width detector capable of detecting if an input signal pulse is within a range between a...
6516419 Network synchronization method and non-break clock switching method in extended bus connection system  
A method of simple network synchronization in a bus extension system with expanded capabilities wherein a plurality of independently-operable multimedia multiplexing devices are connected to the...
6456134 Duty cycle discriminating circuit having variable threshold point  
A duty cycle discriminating circuit used, for example, in a VTR includes an up/down counter with sign bit for counting up or counting down a count clock signal depending on a potential level of a...
6222393 Apparatus and method for generating a pulse signal  
A circuit for generating a pulse signal in response to an input signal. The circuit provides a pulse width for the pulse signal. A first logic device receives the input signal and generates a first...
6075750 Method and circuit for generating an ATD signal to regulate the access to a non-volatile memory  
A method and a circuit generate a pulse synchronization signal (ATD) for timing the memory cell read phase in semiconductor integrated electronic memory devices. The pulse signal (ATD) is generated...
6075751 Signal transition detector for asynchronous circuits  
An apparatus for synchronizing a plurality of signals entering an electronic device. In one embodiment, the apparatus comprises a filter to receive a signal of the plurality of signals entering the...
6064237 Device for removing noise  
A device for removing a noise, in which a delay circuit is used for positively removing a noise contained in a signal regardless of the signal transitioning either from high to low or vice versa....
6040727 Delay device  
A delay device includes storage elements arranged in at least two rows 4, 5; 6, 7 in an integrated circuit, preferably in switched-capacitor technology. The delay device 2; 3 has an even number of...
5995444 Edge transition detection control of a memory device  
The pulse width of an internal edge transition detection signal of a memory device is selectably varied by varying the logic state of one or more control signals of the memory device. A number of...
5949255 Method and apparatus for generating active pulse of desired polarity  
A method for generating an output signal of desired polarity from an input periodical signal of frequency f1 via a clock signal of frequency f2, wherein f2 is substantially greater than f1, is...
5874839 Timer apparatus  
In a timer apparatus, the clock controlling circuit thereof outputs a clock signal during a period in which an input signal is significant. The counter thereof counts the number of pulses of the...
5777492 Address transition detector circuit  
In an ATD circuit, a pulse width amplifier circuit is provided between a first circuit means and a second circuit means. The first circuit means generates a first output signal having a first pulse...
5760612 Inertial delay circuit for eliminating glitches on a signal line  
An inertial delay circuit includes a negative glitch removing circuit connected in series with a positive glitch removing circuit. The negative and positive glitch removing circuits are...
5734273 Phase lock detector  
A phase lock detector for a digital phase locked loop frequency synthesiser in which phase errors, represented by phase error pulses of a duration equal to the relative time displacement of...
5708375 Minimum pulse width detector for a measurement instrument  
A detector circuit operating in parallel with a bandwidth limited measurement channel in a measurement instrument generates a warning signal when an input signal exceeds a predetermined repetition...
5696463 Address transition detecting circuit which generates constant pulse width signal  
An address transition detecting circuit comprising a first address transition detecting stage for generating a first address transition detection signal, the first address transition detection...
5686835 Physical quantity detection device for converting a physical quantity into a corresponding time interval  
A magnetic detection device including at least one oscillator circuit having a magnetoresistance element which converts a change of magnetism detected into a digital signal and a comparator for...
5587686 Time domain signal filter  
A time domain signal filter detects a change in an input signal and replaces the input signal with an internally generated substitute signal for a filter period. The filter period is user...
5566129 Semiconductor memory device with address transition detector  
A semiconductor memory device with an address transition detector comprises a flip-flop circuit (FF) having set and reset input terminals and a delay circuit (3). A pulse signal is input to a set...
5471159 Setup or hold violation triggering  
One embodiment of a circuit and corresponding method for generating a trigger signal upon the occurrence of either set up or hold time violations in the same waveform acquisition produces a trigger...
5444403 Duty discriminating circuit  
A duty ratio discriminating circuit for discriminating a ratio of a high-level precedent portion to one period of an information signal whose level varies periodically, on the basis of threshold...
4891599 Expander system for pulse signals  
An expander system for pulse signals with enhanced output power level is disclosed. The expander system, which comprises an expander filter and subsequently connected amplifier means, is provided...
4742248 Random signal isolation circuit  
A random signal isolation circuit connectable to a source of signal generation wherein signals of interest tend to occur at relatively closely spaced intervals, and noise signals tend to occur at...
4706034 Signal discriminating apparatus for extracting component signals from a composite signal  
An apparatus for extracting a specific component signal from a composite signal composed of a first component signal and a second component signal. The apparatus includes two transistors which...
4670665 Digital pulse width detector  
Apparatus for passing digital pulses from a bilevel digital signal source having widths wider than a given minimum and narrower than a given maximum is described. A first duration sensitive signal...
4370618 Circuit for recognizing cyclically occurring pulse sequences  
A circuit for recognizing cyclically occurring pulse sequences includes a counter controlled by a D-type flip-flop circuit to start counting the pulses in the pulse sequence when a specific pulse...
4339723 Pulse width discriminator  
A pulse width discriminator using a negative logic technique including two monostable multivibrators for generating test pulses and a D-latch for generating an output signal in response to the test...
4309664 Digital energy line sensor  
A digital line sensor includes a voltage sensor which receives transmission of unipolar pulses. A pulse former, coupled to receive the output of the voltage sensor, is coupled to an analog...
4245192 Periodicity verification circuit  
A circuit for high speed testing of the periodicity of an alternating signal (60) independently of signal amplitude. A bistable multivibrator (128) changes state in response to each positive slope...
4158148 Latching detector circuit  
A circuit for generating an indication in response to the occurrence of a predetermined condition is characterized by means for detecting the occurrence of the condition and for generating the...
4095125 Pulse signal detector and/or filter  
Pulse signals are detected and/or filtered depending on pulse width. A first timing circuit is employed to establish first minimum interval T1 and a second timing circuit responsive to the first...
4081130 Filter-type pulse detection means  
A filter-type pulse counter system which separates pulses of desired frequencies from pulses of undesired frequencies, filters out the pulses of undesired frequencies, and then accepts and counts...
4002990 Electronic pulse filtering system  
An analyzing circuit is disclosed in which a train of pulses is applied in parallel to a normally closed gate and to a control circuit for opening and closing the gate. The control circuit includes...
3906258 Failure detecting and inhibiting circuit  
A logic equivalence gate compares signals supplied to and received from an electronic switching circuit to produce an output signal when the switching circuit fails to perform a specified switching...
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