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7414438 Clock based voltage deviation detector  
The clock based voltage deviation detector of the present invention includes a pulse module, an indicator module and a correlation module. The pulse module generates a stream of reset pulses as a...
7383370 Arbiter circuit and signal arbitration method  
An arbiter circuit ( 100 ) can include a latch circuit ( 102 ) that latches competing input signals (MATCH 1 and MATCH 2 ) to generate signals on latch output ( 110 - 0 and 110 - 1 ). A filter...
7225283 Asynchronous arbiter with bounded resolution time and predictable output state  
An arbiter circuit ( 100 ) can include a latch ( 106 ) that latches competing input signals (Req_A and Req_B) to generate latch output signals (latn 1 and latn 2 ). A filter section ( 108 ) can...
7039824 Calibrating return time with cross-coupled arbiter/delay circuits to compare clock signals  
Calibrating return time includes determining clock calibration information based on clock signals local to a master device and return clock signals corresponding to each of at least two slave...
6781418 Arbiter/pulse discriminator circuits with improved metastable failure rate by delayed balance point adjustment  
An apparatus comprising a first circuit and a second circuit. The first circuit may be configured to arbitrate a plurality of input request signals and present one or more first control signals....
6774679 Semiconductor integrated circuit  
In a semiconductor integrated circuit including a phase comparator circuit for a PLL or DLL, overall lock precision of the PLL or DLL is improved by eliminating a dead zone of the phase comparator...
6617900 Arbitrator with no metastable voltage levels on output  
An arbiter that includes a phase comparator receiving two input signals. The outputs of the phase comparator are propagated to a first SR type flip-flop. The outputs of the first SR type flip-flop...
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...
6188249 Asymmetric arbiter with fast signal path  
An asymmetric arbiter provides a fast signal path and a slow signal path. Signals may travel over the fast signal path in substantially less time than it takes for the signals to travel over the...
6002274 Oversampled state machine for jitter tolerant pulse detection  
A transmission line sampling circuit for a T1 line is disclosed. A multi phase oscillator is connected to a plurality of state machines which are connected in parallel to a transmission line. The...
5896048 Method for determining active/stand-by mode for use in a duplicated system  
An active/stand-by determination method for use in a duplicated system, wherein two elements, one given a priority and the other not given a priority, in the duplicated system operate in an active...
5838171 Low power real-time clock circuit having system and battery power arbitration  
A circuit for power arbitration, low battery voltage detection, and the operation of battery backed circuitry for systems in which the system power supply voltage range overlaps that of a battery...
5714901 Hysteretic coupling system  
An interconnecting network comprising operational amplifiers, summing ampiers, and hysteretic coupling circuits is disclosed. The interconnecting network responds to signals of interest that may be...
5568072 Circuit indicating the phase relation between several signals having the same frequency  
A circuit, indicating the first or last signal activated among n signals, includes flip-flops respectively associated with pairs of signals, a first signal of each pair being applied to a reset...
5555540 ASIC bus structure  
A bi-directional ring bus structure is formed on an integrated circuit from a conductive bus and M X:1 multiplexer modules (where M is an integer ≥2), coupled in a point-to-point configuration....
5539338 Input or output selectable circuit pin  
A circuit for selecting between two states and using the same pin as an input and an output. On power-up, the pin can be connected to either a grounded resistor (to select the first state) or the...
5495190 Arbiter circuit  
An arbiter circuit for determining priority as between two or more competing request signals and applicable for use in a memory system having a number of memories operating independently without...
5341052 Arbiter with test capability and associated testing method  
An arbiter based on pairwise mutual exclusion produces an absolute priority signal (G) indicating that one of three or more requests (R 1 , R 2 , . . . R N ) has gained absolute priority over all...
5315184 Self arbitrating auto resettable flag circuit  
A flag setting, reading and clearing circuit is described which includes self arbitrating logic to provide priority for the flag setting portion of the circuit over the flag clearing portion. The...
5266844 Timing discriminator circuit and method for determining the arrival order of input signals  
The present invention is directed to systems and methods capable of analyzing a wide variety of input signal waveforms to arbitrate their arrival sequence with a high resolution. In an exemplary...
5148112 Efficient arbiter  
A logic circuit for use as an arbiter to arbitrate among N devices of a computer system for access to a shared resource. The arbiter generates state variables to represent arbitration win...
5136180 Variable frequency clock for a computer system  
A circuit generates a system clock signal. On a first input of the circuit a first oscillating signal is placed. On a second input, a second oscillating signal may be placed. Clock sense logic is...
5121413 Digital pulse processor for determining leading and trailing time-of-arrival  
A Digital Pulse Processor (DPP) designed to accept pulsed inputs and produce digital pulse descriptor word (PDW) outputs accepts pulsed signals from three adjacent channelized inputs. The DPP then...
5065052 Arbiter circuit using plural-reset RS flip-flops  
This invention is realized, in sum, by providing at least one reset input terminal, aside from a reset input terminal to which a request end signal is supplied, to output stage RS flip-flops of...
5049766 Delay measuring circuit  
In a delay measuring circuit (10), an input clock signal (13) is applied to a multitapped delay line (14), the output taps of which are connected to a switch (26) which selects one of the switch...
4998030 Circuit to arbitrate multiple requests for memory access  
An asynchronous arbiter circuit processes multiple different address signals that request access to the same memory location during the same memroy cycle. The circuit employs two sets of latches....
4998027 Arbiter circuit  
Disclosed is an arbiter circuit for arbitrating a contention between two request signals which simultaneously attain the H (logical high) level indicating a "request". In this arbiter circuit,...
4980577 Dual triggered edge-sensitive asynchrounous flip-flop  
An architecture for bistable circuits with minimized sensitivity to metastability events and with improved operation in signal timing, arbitration, and protocol applications. Conventional...
4916339 Signal processing for contact-sensing probe  
A probe (12) is connected to an interface circuit (10). The probe (12) has two different types of contact sensors, namely a piezo electric sensor and an electro-mechanical switching sensor. The...
4894565 Asynchronous digital arbiter  
An asynchronous digital arbiter circuit suitable for use in computer systems applications requiring fast asynchronous arbitration between two asynchronous inputs. The arbiter resolves which of two...
4865538 Fail safe gas valve drive circuit  
A fail safe drive circuit for enabling the relay which in turn opens the valve for supplying gas to a burner is disclosed and includes a pair of field effect transistors both of which must be...
4864243 Method and an apparatus for resolving identical address requests in a dual port circuit device  
An improvement to an arbitration circuit in a dual port memory circuit device is disclosed. The arbitration circuit resolves near simultaneous identical address requests on the two ports. The...
4841178 Asynchronous processor arbitration circuit  
The invention provides a circuit for arbitrating access to a common resource by a pair of processors using an asynchronous sequential logic circuit. A latch circuit is held in a pseudo-stable state...
4835422 Arbiter circuits with metastable free outputs  
A high-speed low-power-consumption two-input arbiter circuit comprises two input inverters, two inverters cross-coupled to form a latch and two additional inverters that drive a difference...
4815039 Fast real-time arbiter  
An arbiter (52) is operable to supply an up/down signal (11) and a clock signal (13) to an up/down counter (10) so that the up/down counter (10) can count the difference between read requests (54)...
4757217 Refresh operation control circuit for semiconductor device  
This invention provides a refresh operation control circuit for a semiconductor memory device. Two flip-flop circuits respectively temporarily hold a normal read start command signal and a refresh...
4620118 Dual port access circuit with automatic asynchronous contention resolving capability  
Two microprocessors, which may be operating asynchronously, share a random access memory (RAM) array; that is, at any one moment of time, either microprocessor can seek access to the RAM but only...
4611295 Supervisory control system for microprocessor based appliance controls  
A supervisory control system for microprocessor based appliance controls, the supervisory control system incorporating means for detecting dynamic failure of a microprocessor incorporated in the...
4596048 Optically isolated contention bus  
Optical isolation means electrically isolates the electrical network ground of a logical contention bus from a transmitter coupled to the bus and having a local logic ground and a receiver coupled...
4497068 Encoding system for optic data link  
Encoding circuitry is provided for optic digital data transmission. A transmitter transmits a pair of timed optic pulses of different duration in response to respective leading and trailing edges...
4446382 Arrangement to time separate bidirectional current flow  
The present disclosure describes a circuit arrangement wherein a clock signal generator generates two sets of time-period, separated enable signals and wherein there is controllable first direction...
4423384 Asynchronous multi-port arbiter  
The arbitration circuit for granting control of a shared resource to one of a plurality of ports based upon a predetermined scheme of priority includes a plurality of input flip-flops for receiving...
4420695 Synchronous priority circuit  
A logic circuit is connected to "n" input terminals having a descending order of priority 1, . . . k, . . . n, and to "n" corresponding output terminals for causing a logical "true" signal to be...
4419592 Bidirection data switch sequencing circuit  
Circuit for sequencing asynchronously the direction-indicating signal and the gating signal to bidirectional switch so that the direction-indicating signal is maintained before, during, and after...
4403192 Priority circuit for service request signals  
An interlock arrangement in which each service request path comprises two inverter gates between an input and an output with a junction between the gates. Cross-coupling circuits are coupled from...
4398105 Arbiter circuit  
An arbiter circuit includes a latch made of two crosscoupled NAND gates, one of which is a Schmitt NAND gate, a difference detector, and two output NOR gates. The output of the latch is coupled to...
4339808 Asynchronous event prioritizing circuit  
A prioritizing circuit is provided for arbitrating between asynchronously occurring memory access request and memory refresh request signals to a dynamic RAM memory module. The circuit includes a...
4315167 Self-switching bidirectional digital line driver  
A logic driver circuit repowers signals in either direction along a line, without requiring any external direction-control signal. Two back-to-back driver halves each include a gate, an...
4314164 Computer channel access circuit for multiple input-output devices  
An access circuit for use in a computer input-output channel. Retriggerable mono-stable multivibrators are used to provide access timing periods during which an input-output device can access a...
4249093 Multiple request arbitration circuit  
Multiple usage requests for a common resource, such as a memory system, are given usage priorities by a multiple request arbitration circuit. Priority is given to a predetermined one of the input...
Matches 1 - 50 out of 83 1 2 >