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| Number | Title | Issue Date |
| 7274916 | Differential signal receiver and method A differential signal receiver and method is disclosed. One embodiment relates to a receiver for receiving a differential signal. The receiver includes a first voltage-to-current converter that converts the voltage received at a first input to a first current, and a... | 09/25/2007 |
| 7209852 | Circuit for producing a variable frequency clock signal having a high frequency low jitter pulse component Embodiments of the present invention include first and second pulse trains input to a switch in synchronization. The first and second pulse trains may have a repeating high and low values at first and second frequencies, respectively, and the first pulse train may t... | 04/24/2007 |
| 7164721 | Simultaneous bidirectional signal subtraction According to some embodiments, a circuit is adapted to convert a first voltage signal from a bidirectional signal line to a first current signal, the first voltage signal to represent first data transmitted from a first transmitter and second data transmitted from a... | 01/16/2007 |
| 7162622 | Microcomputer for apparatus control and vehicle-mounted electronic control unit incorporating microcomputer A microcomputer which is to be utilized in a condition of being built into an apparatus such as a vehicle ECU, includes a ROM having stored therein a program which is prepared by a user and a boot ROM which stores an initialization program for performing at least es... | 01/09/2007 |
| 7130274 | Method for detecting connection polarity of network transmission lines and associated detection circuit A method and associated detecting circuitss for detecting and correcting a connection polarity of a network transmission line include two network clients and a network transmission line. One network client utilizes a detecting circuit to count and compare the number... | 10/31/2006 |
| 7095667 | Noise resistant small signal sensing circuit for a memory device Apparatus and method for data sensing circuitry that uses averaging to sense small differences in signal levels representing data states. The apparatus periodically switches the coupling of input terminals and output terminals of an integrator circuit from a first c... | 08/22/2006 |
| 7027424 | Method for avoiding interference in a digital communication system A technique for time domain avoidance of communications link interference sources characterized by intermittent, periodic short bursts of energy. A transmitting source can be assigned two time slots within a time domain multiple access data frame over which each dat... | 04/11/2006 |
| 6946881 | Method to detect the polarity of sync signals without external capacitor or clock In a polarity detector circuit for detecting the polarity of monitor sync signals, a clock generator and counter circuit are provided to count clock cycles during the positive and negative portions of the signal. Comparators are used to compare the counter values to... | 09/20/2005 |
| 6947492 | Encoding and decoding ultra-wideband information A system and a method for encoding and decoding ultra-wideband information are provided. An ultra-wideband transmission is encoded by positioning bipolar pulse pairs. The bipolar pulse pairs assist in detecting errors in the ultra-wideband transmission, before the e... | 09/20/2005 |
| 6925588 | Methods and apparatus for testing data lines Systems and methods for testing data lines to determine signal degradation in the data lines. A system includes a signal generator for generating a test pattern and for transferring the test pattern through the data lines. The system also includes an analyzer commun... | 08/02/2005 |
| 6507219 | Charge sharing and charge recycling for an on-chip bus A method for charge sharing among data conductors of a bus. The bus has a first data conductor and a corresponding data conductor. The method includes detecting the logic levels on the first data conductor and the corresponding data conductor, and generat... | 01/14/2003 |
| 6356115 | Charge sharing and charge recycling for an on-chip bus A method for charge sharing among data conductors of a bus. The bus has a first data conductor and a corresponding data conductor. The method includes detecting the logic levels on the first data conductor and the corresponding data conductor, and generat... | 03/12/2002 |
| 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 |
| 6008733 | Air conditioning system master/slave control unit determination A plurality of air conditioning system control units are connected to each other through a communication line (20). Discharge resistors (R1, R2) are provided for discharging residual charges of the communication line (20). The control unit has a power sup... | 12/28/1999 |
| 5977802 | Circuit for processing vertical synchronization signals including a polarity detection circuit The present invention relates to a circuit for processing vertical synchronization logic signals of positive or negative polarity. Based on signals locating, on the one hand, the presence of the beginning of a pulse and, on the other hand, the rising and ... | 11/02/1999 |
| 5831455 | Polarity detector A polarity detector 100 wherein bistables 105 and 107 selectively sample the sequence of pulses and store samples. The samples and the output signal 125, stored by the bistable 109, are compared by the logic circuit 108. When the stored samples have ident... | 11/03/1998 |
| 5818130 | Method and arrangement for appropriately polarity recognition and switchover of an output stage For appropriately polarity recognition and corresponding switchover of a output stage of a proximity switch or the like connected to a supply voltage (VB), even while continuously activated, when a change in load polarity occurs, the proximity switch havi... | 10/06/1998 |
| 5751692 | Bus signal detector A bus signal detector for a signal transmitted via a bus (12) has an edge detector (14) which supplies a signal (SF1) indicating the occurrence of a signal edge (F1) when the voltage on the bus (12) suddenly changes by at least a predetermined ... | 05/12/1998 |
| 5648737 | Method of setting the polarity of a digital signal, and integrated circuits implementing the method A method of setting the polarity of a digital signal coming from a first integrated circuit, said digital signal being representative of data generated within the integrated circuit and requiring application to an input of a second integrated circuit that... | 07/15/1997 |
| 5646462 | DC voltage bypass power system architecture A power plant system architecture includes a plurality of battery polarity switching circuits for providing uninterruptible power/voltage to a plurality of loads, each of which is powered by low frequency AC, and which is also powered by a DC voltage. DC ... | 07/08/1997 |
| 5557220 | Polarity detector A polarity detector wherein voltage-to-current converters (21, 22) connected to transmission paths (1, 2) output currents according to potentials at the transmission paths (1, 2), respectively, and a current adder (23) adds the currents together. A curren... | 09/17/1996 |
| 5498984 | High side, current sense amplifier using a symmetric amplifier A self-contained, bi-polar high-side current sense amplifier which detects the magnitude and polarity of current flowing from one device to another, is disclosed. The amplifier has a symmetric architecture having two inputs and two outputs. One output is ... | 03/12/1996 |
| 5461649 | Method and apparatus for maintaining a state of a state machine during unstable clock conditions without clock delay An apparatus and method for protecting the state of a state machine from an unstable clock signal. The apparatus of one embodiment includes a state register having an input and a first output which provides an output signal corresponding to the state of t... | 10/24/1995 |
| 5418820 | Automatic polarity detection and correction method and apparatus employing linkpulses An apparatus and method for a transition detector and pulse width qualifying circuit for a differential receiver. The circuit generates pulses at every transition of a differential input signal and asserts a time-out signal upon detection of an end-of-tra... | 05/23/1995 |
| 5350950 | Setting circuit of binary threshold value A binary threshold value setting circuit comprises: a first detecting section to detect the positive polarity side of an input signal, a second detecting section to detect the negative polarity side of the signal; a first envelope detecting section to per... | 09/27/1994 |
| 5315527 | Method and apparatus providing half-cycle digitization of AC signals by an analog-to-digital converter A circuit, and a processing and calculation method that makes use of the digital samples of either the positive or negative half-cycle of voltage or current signals to achieve a sixteen to one improvement in accuracy for controls connectable to an electri... | 05/24/1994 |
| 5306968 | Rectifier circuit not using clock signal A rectifier circuit without using a clock signal is provided. In this circuit, a polarity judgment circuit receives an AC signal and judges the positive/negative polarity of voltage of the AC signal and output the polarity specification signal. A gain con... | 04/26/1994 |
| 5258724 | Frequency synthesizer The fractional division frequency synthesizer comprises a digital ramp generator producing a digital correction ramp controlled by a frequency control programmer; a divide by N divider coupled to an output of a voltage controlled oscillator with the divid... | 11/02/1993 |
| 5189378 | Tone signal detecting circuit A tone signal detecting circuit includes a sampling circuit, a storage circuit, and a comparing circuit. The sampling circuit samples a tone signal at a sampling rate N times (N is a natural number) higher than a frequency f of the one signal. The storage... | 02/23/1993 |
| 5142169 | Apparatus for identifying a second of two successive pulses of the same polarity in a pulse train of positive and negative pulses for generation of synchronization pulses for an internal combustion engine Synchronization pulses for an internal combustion engine are generated by identifying the second of two consecutive pulses of the same polarity in a pulse train of positive going and negative going pulses. An evaluation pulse sequence is generated which s... | 08/25/1992 |
| 5051616 | Zero crossing detector arrangements A zero crossing detector arrangement which is operable on successive samples of an analogue signal comprises a first stage (3) which includes adders and dividers (A,D) for affording a first output (b4) corresponding to the average of two successive sample... | 09/24/1991 |
| 5029120 | Electrical wavefrom generator means and methods An electrical waveform generator and a method for electrical waveform generation are provided which includes a central processing unit (13) to first provide sequential points of a selectable waveform in digital form and store them in digital memory (15). ... | 07/02/1991 |
| 5003556 | Squelch circuit A squelch circuit is disclosed that distinguishes between noise impulses and valid packets of data transmitted over a transmission line such as a twisted pair media within a local area network. The squelch circuit converts supplied data into a stream of p... | 03/26/1991 |
| 4982107 | Sourcing or sinking output circuit The present invention provides an output signal comprising a sourcing or sinking current for a sensor or control device. The type of output generated by the sensor or control device depends upon the polarity of the power supply. The DC circuit of the pres... | 01/01/1991 |
| 4920278 | Phase comparator A phase comparator included in a phase locked loop (PLL) for comparing two input signals with respect to phase to thereby determine their phase difference includes two multipliers and two low-pass filters for producing a sine component signal and a cosine... | 04/24/1990 |
| 4860311 | Method and apparatus for automatically converting input pulse train signals to output signals of desired polarity A method and apparatus for sensing the polarity of an input pulse train signal and for automatically changing its polarity as required by the circuit to which it will be applied, is disclosed. The polarity of the input pulse train signal is determined by ... | 08/22/1989 |
| 4859872 | Synchronizing signal processing circuit An input synchronizing signal is subjected to mean DC voltage adjustment so that the mean DC voltage thereof becomes a prescribed level. The input synchronizing signal after the mean DC voltage adjustment is compared with first reference voltage which is ... | 08/22/1989 |
| 4823060 | Circuit arrangement for generating a measurement signal associated with the frequency of an alternating current signal A circuit arrangement for generating a useful direct voltage signal associated with the frequency of an alternating current signal serves, in particular, to regulate the synchronism of an electric motor. It includes a comparator circuit (7) which converts... | 04/18/1989 |
| 4820940 | Control circuits operating with pulse-width modulated signals A control circuit operating with a pulse-width modulated signal which is operative to control a driving circuit portion provided therein for driving a unit to be driven so as to operate in accordance with a pulse-width modulated control signal and in whic... | 04/11/1989 |
| 4780691 | Dielectric resonator frequency discriminator for stabilizing oscillator frequency A frequency discriminator (1) stabilizes a voltage controlled oscillator (5), particularly one operating at microwave frequencies. A single dielectric resonator (2), typically positioned within a housing (8), is excited by an r.f. input (30). The dielectr... | 10/25/1988 |
