| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 327184000 | Rectangular (e.g., clock, etc.) or pulse waveform generating by conversion from input AC (e.g., sine, etc.) wave | 14 |
| 20090039934 | 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 relationships. | 02-12-2009 |
| 20090039935 | 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. | 02-12-2009 |
| 20090066384 | SEMICONDUCTOR INTEGRATED CIRCUIT, PWM SIGNAL OUTPUT DEVICE, AND POWER CONVERSION CONTROL APPARATUS - Provided is a control technique of a PWM conversion type power converter capable of compensating for a voltage error due to voltage drop mainly at a switching element and managing a switching time of a PWM signal at the same time, and capable of suppressing increase/decrease of software operation load and addition of a hardware circuit to the minimum. A semiconductor integrated circuit having a PWM signal generating unit which generates a PWM signal is provided with a PWM timer unit including a counter counting a pulse width of a pulse signal inputted from the outside with delay from a PWM signal, a register loading a counter value of the counter in synchronization with the PWM signal, and an A/D converting unit converting an analog signal serving as a source signal of the pulse signal inputted from the outside to a digital signal. | 03-12-2009 |
| 20090102530 | Reference pulse discrimination method - The invention relates to a method of forming a reference pulse I | 04-23-2009 |
| 20090219071 | Transmission line based high voltage pulse generator - A high voltage, fast pulse rise/fall time, and high repetition rate pulse generator solves the high pulse repetition rate limitations associated with RF power amplifiers and gap switch type pulse generators. The pulse generator employs a transmission line architecture and structural techniques that allow for continued high voltage, fast rise/fall time, and high repetition pulse rate operation of the pulse generator without impairment of the pulse generator while exceeding performance characteristics achievable with conventional RF power amplifiers and gap switch type pulse generators. | 09-03-2009 |
| 20100176858 | 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 relationships. | 07-15-2010 |
| 20100213997 | Interpolation Accuracy Improvement in Motion Encoder Systems, Devices and Methods - Disclosed are various embodiments of interpolation circuits for use in conjunction with motion encoders. The analog output signals provided by incremental or absolute motion encoders are provided to an interpolation circuit, which is capable of providing high interpolation factor output signals having high timing accuracy. Problems with noise spikes common to zero-hysteresis comparators typically employed in interpolation circuits are eliminated, as are problems with time delays differing between comparators that do feature hysteresis. The disclosed interpolation circuits may be implemented using CMOS processes without undue effort. | 08-26-2010 |
| 20100244917 | SIGNAL TRANSMISSION DEVICE AND SIGNAL TRANSMISSION METHOD - A signal transmission device for transmitting a signal along a transmission path including a sinusoidal-signal transmitting unit configured to generate a sinusoidal signal that has a period the same as a period of a square-wave digital signal whose voltage level changes in correspondence with a logical value and that has a phase which differs based on change in the logical value of the square-wave digital signal, and configured to transmit the sinusoidal signal. The signal transmission device includes a sinusoidal-signal receiving unit configured to receive the sinusoidal signal, and configured to reproduce the square-wave digital signal from the sinusoidal signal based on change in the phase of the sinusoidal signal. | 09-30-2010 |
| 20120161840 | SR FLIP-FLOP - An input priority determination circuit is configured such that: (i) when a set signal S is asserted and a reset signal R is negated, an intermediate set signal S′ is asserted and an intermediate reset signal R′ is negated; (ii) when the set signal S is negated and the reset signal R is asserted, the intermediate set signal S′ is negated, and the intermediate reset signal R′ is asserted; (iii) when a control signal P indicates a set priority mode, and when the set signal S and the reset signal R are both asserted, the intermediate set signal S′ is asserted and the intermediate reset signal R′ is negated; and (iv) when the control signal P indicates a reset priority mode, and when the set signal S and the reset signal R are both asserted, the intermediate set signal S′ is negated and the intermediate reset signal R′ is asserted. | 06-28-2012 |
| 20120235723 | PROVISION OF AN AC SIGNAL - A circuit for providing an AC signal includes an amplifier having an input and an output. A sinusoidal signal is applicable at the input of the amplifier. The output of the amplifier is connected to the input via a lowpass filter or via a part of the lowpass filter. | 09-20-2012 |
| 20120249203 | SIGNAL GENERATOR - There is provided a signal generator outputting an analog frequency signal based on a digital value according to a set frequency, which provides excellent noise characteristics, requires no ROM table corresponding to waveform data, and has a simple configuration. A digital signal having a digital value according to a set frequency is integrated to generate a waveform in a sawtooth shape, a waveform in a triangular wave shape is generated based on the waveform, and this waveform output is differentiated and then DIA converted and integrated. A comparator using, for example, the voltage at a midpoint of the triangular wave as a threshold value is used for the integrated output, and a frequency signal of an objective frequency is obtained from the comparator. | 10-04-2012 |
| 20120280735 | APPARATUS AND METHOD TO HOLD PLL OUTPUT FREQUENCY WHEN INPUT CLOCK IS LOST - A clock conditioning circuit including a phase detector circuit configured to provide an analog tuning signal indicative of a phase relationship between a reference clock to be conditioned and a generated clock. The controlled oscillator is configured to produce the generated clock, with the generated clock having an output frequency adjustable in response to an analog tuning signal applied to a control signal input of the controlled oscillator. Converter circuitry is provided to produce a digital representation of the analog tuning signal when the mode control circuitry is in a tracking mode. In the event the reference clock is lost, the mode control circuitry switches to a holdover mode so as to provide an analog holdover signal to the control signal input based upon the digital representations produced just prior to the loss of the reference clock. | 11-08-2012 |
| 20130194015 | METHOD FOR THE OPERATION OF ELECTROSTATIC PRECIPITATORS - The disclosure relates to a method for the scheduling and/or the operation of a system of at least two power supplies ( | 08-01-2013 |
| 20140306742 | Method and System for Controlling Radio Frequency Power - A method for controlling pulsed power that includes measuring a first pulse of power from a power amplifier to obtain data. The method also includes generating a first signal to adjust a second pulse of delivered power, the first signal correlated to the data to minimize a power difference between a power set point and a substantially stable portion of the second pulse. The method also includes generating a second signal to adjust the second pulse of delivered power, the second signal correlated to the data to minimize an amplitude difference between a peak of the second pulse and the substantially stable portion of the second pulse. | 10-16-2014 |
