Class 327/24 - Edge sensing

Subclass of Class 327 - Miscellaneous active electrical nonlinear devices, circuits, and systems
Definition: Subject matter wherein a beginning or trailing end of a
No. of patents: 75
Last issue date: 02/01/2011

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Number	Title	Issue Date
6340901	Measurement of signal propagation delay using arbiters Arbiter circuits placed between two signal path segments on a semiconductor chip to measure the difference in propagation delay between those paths at their beginning and end. Each arbiter circuit has two inputs, and outputs signals indicating which of it...	01/22/2002
6218869	Pulse detector with double resolution A pulse edge detector for detecting edges of a pulse signal in a bit stream. The bit stream, and herewith the pulse signal, is synchronized to a clock having half the resolution of a clock signal used to transmit the bit stream. Falling and rising edges o...	04/17/2001
6160423	High speed source synchronous signaling for interfacing VLSI CMOS circuits to transmission lines A system of the present invention uses small swing differential source synchronous voltage and timing reference (SSVTR and /SSVTR) signals to compare single-ended signals of the same slew rate generated at the same time from the same integrated circuit fo...	12/12/2000
6137331	Electronic circuit with dual edge triggered flip-flop The electronic circuit contains dual edge triggered flip-flop, which loads data on both the rising edge and the falling edge of a clock signal. The clock signal is supplied by a clock supply circuit with an enable input and a source input for receiving a ...	10/24/2000
6111436	Measurement of signal propagation delay using arbiters Arbiter circuits placed between two signal path segments on a semiconductor chip to measure the difference in propagation delay between those paths at their beginning and end. Each arbiter circuit has two inputs, and outputs signals indicating which of it...	08/29/2000
6075397	Semiconductor integrated circuit The present invention provides an technique for compensating a operation speed variation based on a principle that a circuit operation speed is adjusted by reflecting a delay time of an internal circuit itself that is an object of the operation speed fluc...	06/13/2000
6064236	Phase detector and timing extracting circuit using phase detector Disclosed are a phase detector for detecting the phase difference between a data signal and a clock signal, and a timing extracting circuit for controlling the phase of the clock signal so that the phase relationship between the clock signal and the data ...	05/16/2000
6049234	Telemetering apparatus The object of the present invention is to provide the telemetering apparatus, which telemeters electric power, gas, and waterworks, for telemetering via a telephone network with an exchange, wherein the telemetering apparatus responds to the normal polari...	04/11/2000
5973516	Transient signal detector with temporal hysteresis A subscriber line interface circuit which includes a transient signal detector with temporal hysteresis. During steady state operation, the drive current for the subscriber loop allows the loop to respond to changes in loop conditions according to a stead...	10/26/1999
5959486	Address transition detection circuit An address transition detection circuit includes an address input unit; a first latch unit for latching an input address signal and activating an address transition detection signal; a second latch unit for latching an input level of the first latch unit ...	09/28/1999
5945850	Edge signal restoration circuit and method An edge signal restoration circuit and method to enhance an edge of a signal decreases a rise and fall time of a propagating signal during transitions between logic states. The edge signal restoration circuit includes a first circuit to detect an edge of ...	08/31/1999
5907250	Transition detector with timer A circuit for detecting delay of more than a set period of time from a last signal transition for any of a plurality of data signals, comprising a differential comparator, and integrator pairs for each signal, one integrator of the pair being triggered by...	05/25/1999
5875152	Address transition detection circuit for a semiconductor memory capable of detecting narrowly spaced address changes The present invention provides a new (ATD) address transition detection circuit for use on an address bus having any number of address lines. An ATD circuit is disclosed which comprises a first and second circuit and an interval timer. The first circuit h...	02/23/1999
5821786	Semiconductor integrated circuit having function for evaluating AC performance A semiconductor integrated circuit, having circuit blocks to be evaluated in AC performance, includes a first circuit for inputting a first signal and a second signal generated in the interior of the semiconductor integrated circuit. The first circuit out...	10/13/1998
5812250	Doppler velocimeter and various kinds of apparatuses for signal processing thereof A Doppler velocimeter determines a state of noise generation in a detection signal including a Doppler signal component based on comparison by a preceding/succeeding-signal comparator for comparing the detection signals before and after passing through a ...	09/22/1998
5798730	Pulse edge detector with wide dynamic range A pulse detector achieves high accuracy over a wide dynamic range in providing accurately spaced pulse edge markers that allow measurement of pulse to pulse time intervals. Received input pulses are transformed to a Gaussian like waveform and a single cyc...	08/25/1998
5745530	Digital data recovering apparatus A digital data recovering apparatus which includes an edge detector, a threshold comparator, a position address generator, a position memory, a maximum position detector, a new position generator and a recovered data detector. The digital data recovering ...	04/28/1998
5742188	Universal input data sampling circuit and method thereof A circuit for detecting timing errors and for selecting the correct clock edge for mid-point data sampling, includes a rising edge sampling device for sampling an input data signal at a rising edge of an input clock and generating a first interim data sig...	04/21/1998
5717348	Self adjusting edge detector circuit A edge detector for the production of output signal in a manner dependent on positive and negative edges of a square wave signal comprises a differential amplifier with two base-coupled transistors (Q1, Q2). Each emitter of such transistors is connected v...	02/10/1998
5708378	Frequency-to-voltage converting apparatus In a frequency-to-voltage converting circuit, a clamping frequency is maintained constant without being adversely influenced by circuit constants, and temperature characteristics. The frequency-to-voltage converting apparatus has voltage converting means ...	01/13/1998
5708389	Integrated circuit employing quantized feedback An integrated circuit employing quantized feedback is capable of compensating for decay in capacitively-coupled digital signals. In an exemplary embodiment, the integrated circuit includes a quantized feedback receiver connected to a capacitively-coupled ...	01/13/1998
5631592	Pulse generation/sensing arrangement for use in a microprocessor system A pulse generation and sensing arrangement in a microprocessor system (100) includes an input/output terminal (130) which receives an input signal or produces an output signal, an edge detector (132) which senses pulse edges in the input signal, timers (1...	05/20/1997
5606276	Method and apparatus for creating a large delay in a pulse in a layout efficient manner A delay element (10) generates a delay pulse (OUT) the length of which is not dependent on an available system clock. The delay element uses oscillators (12a, 12b, 12c) and edge detectors (16a, 16b, 16c) to generate a delay based on the beat frequency of ...	02/25/1997
5519666	Apparatus and method for an address transition detector An address transition detector stores a first output signal on an output terminal for a first predetermined period of time in response to an initial edge of an internal address signal pulse. The address transition detector stores a second output signal on...	05/21/1996
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 signal referenced to, but displaced in time from, the inp...	11/28/1995
5459415	Signal reproducing apparatus and unit for detecting leading edge of signal A signal reproducing apparatus reproduces a signal recorded in a DAT by using a start ID. The signal reproducing apparatus includes an output circuit for reading out a signal from the DAT and for outputting a reproduction signal, a memory for storing sign...	10/17/1995
5436580	Method and circuitry for determining the beginning of echo pulses A method and circuit for accurately determining the leading edge timing of a pulse of high frequency carrier signal at a receiver which substantially simultaneously receives the same pulse over multiple transmission paths resulting in distortion of the pu...	07/25/1995
5376847	Phase detector and methodology In one embodiment, a method of providing phase detection from a circuit having first and second inputs and at least one output is disclosed. The method includes a cyclical operation of four steps. The first step awaits the receipt at the first input of an...	12/27/1994
5087828	Timing circuit for single line serial data A timing adjusting circuit for single line serial data includes a synchronous data sampling circuit for sampling data input from the exterior synchronously with a reference clock pulse, a data edge detection circuit for outputting data edge detection sign...	02/11/1992
5004933	Phase-selectable flip-flop A phase-selectable flip-flop has an input dual-enable transparent latch and an output D-type flip-flop. A clock is input to one enable of the transparent latch and to the flip-flop, and a command is input to the second enable of the transparent latch. Whe...	04/02/1991
4985639	Logic edge timing generation An edge generation circuit phase delays pulses of a first signal propagated on an integrated circuit. The edge generation circuit includes a first variable delay circuit located on the integrated circuit, a delay line located off the integrated circuit an...	01/15/1991
4799023	Circuits and apparatus which enable elimination of setup time and hold time testing errors An improved digital testing device is presented which includes the capability to detect and avoid a pair of common sources of measurement error. One source of error occurs when measurements are made within a Setup time before a transition in the signal un...	01/17/1989
4783633	Pulse-edge coincidence detector and use of same for selecting a sampling signal An integrable circuit arrangement for deriving a coincidence pulse on coincidences of the falling edges of pulses of a digital data signal with the falling edges of pulses of sampling signals obtained by frequency division and gating and intended for use ...	11/08/1988
4464581	Trigger pulse generator A trigger pulse generator generates trigger pulses synchronized with the rising edges and falling edges of an input signal and is used, for example, in a semiconductor memory device in order to shorten the access time. The trigger pulse generator accordin...	08/07/1984
3993954	Electric communication system A data transmission system for transmitting data and subsidiary information by means of pulses of different widths corresponding to a multiple of a signal propagation time delay of a NAND gate. The system makes it possible to simplify the construction of ...	11/23/1976

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Class 327/24 - Edge sensing