Class 327/121 - Selective

Subclass of Class 327 - Miscellaneous active electrical nonlinear devices, circuits, and systems
Definition: Subject matter wherein one or more of the multiple output
No. of patents: 26
Last issue date: 04/29/2008

Number	Title	Issue Date
7366937	Fast synchronization of a number of digital clocks The present invention relates to a method for synchronizing a number of digital clocks to a synchronizing signal, said method comprising generating centrally a reference clock, synthesizing said digital clocks from said reference clock using a clock multiplier, resp...	04/29/2008
7271631	Clock multiplication circuit A clock multiplication circuit simple in configuration, easy to adjust the characteristics thereof, and capable of shortening lockup time. The circuit delivers an output clock signal at a frequency that is a multiple of the frequency of a reference clock signal as i...	09/18/2007
7132863	Digital clock frequency doubler A digital clock frequency doubler for increasing an input frequency of an input clock signal includes an input block, and a generator block. The input block receives the input clock signal, and generates a pulse signal having an ON period equal to the input clock si...	11/07/2006
7103790	Memory controller driver circuitry having a multiplexing stage to provide data to at least N-1 of N data propagation circuits, and having output merging circuitry to alternately couple the N data propagation circuits to a data pad to generate either a 1x or Mx stream of data A double data rate memory controller is provided with a plurality of data and strobe pads, means for receiving data and strobe signals via said pads at 1× double data rate memory speed, and means for receiving data and strobe signals via said pads at M× double dat...	09/05/2006
7061285	Clock doubler A clock doubler including clock doubling circuitry for generating from a system clock a clock signal having a frequency substantially double that of the system clock and also having a pulse width and associated duty cycle is provided. Timing circuitry for generating...	06/13/2006
6876236	Clock multiplier circuit A clock multiplier circuit which generates a multiple clock having a stable frequency from a reference clock without using analog devices. The clock multiplier circuit includes ring oscillator which oscillates at a higher frequency than that of the multiple clock; a...	04/05/2005
6756827	Clock multiplier using masked control of clock pulses A clock multiplier circuit is receives an input signal and generates a clock output signal. The clock multiplier circuit generates a number of pulses to be used as the clock output signal, wherein the pulses have a pulsewidth that is independent of the number of pul...	06/29/2004
6593804	Controllable high frequency emphasis circuit for selective signal peaking A signal peaking circuit for selectively emphasizing, or boosting, the higher frequencies of an incoming signal. A frequency emphasis circuit with an overall high pass transfer characteristic selectively emphasizes higher frequency signal components over ...	07/15/2003
6556644	Frequency multiplier circuit and method using above circuit for a period time division in subperiods, for a brushless motor A frequency multiplier circuit and a controlling method thereof, which measures a period of a waveform by counting cycles of a fixed frequency timing signal, and reproduces the period by adding a number of prefixed length subperiods of the fixed frequency...	04/29/2003
6480045	Digital frequency multiplier A digital frequency multiplier provides non-integer frequency multiplication of an input signal. A multiplexer receives the input signal and an integer multiple of the input signal. A multiplexer control signal selects/toggles which signal the multiplexer...	11/12/2002
6459330	DC-DC voltage boosting method and power supply circuit using the same A DC-DC voltage boosting method is capable of reducing power consumption by detecting a margin of a boosting voltage, even if the display mode of a liquid crystal panel or a displayed content changes. Included are the steps of (a) boosting an input voltag...	10/01/2002
6229358	Delayed matching signal generator and frequency multiplier using scaled delay networks A delayed matching signal generator and frequency multiplier using scaled delay networks for providing precisely delayed matching signals and multiplied frequency signals is provided. The system and method of phase shifting a periodic input digital signal...	05/08/2001
6118313	Digital frequency multiplying circuit A digital frequency-doubling circuit includes a pair of cascaded first delay circuits, each including a plurality of cascaded delays, and a first stage of the cascaded first delay circuits receiving an input signal to be frequency-doubled, and an exclusiv...	09/12/2000
6005421	Synchronous delay circuit for generating synchronous delayed signals with short time and frequency multiplying circuit using the same In a frequency multiplier circuit, a first delaying section delays a reference signal and generates an output signal when the reference signal has been delayed by a predetermined delay time. A second delaying section generates n (n is an integer more than...	12/21/1999
6000829	Semiconductor integrated circuit capable of compensating for flucuations in power supply voltage level and method of manufacturing the same In a semiconductor integrated circuit, a CMOS logic circuit receives a voltage from a power-source line, while releasing a current through a ground line. A constant-voltage auxiliary circuit is disposed in parallel with the CMOS logic circuit. The constan...	12/14/1999
5990712	Harmonic generator A harmonic generator (20) converts an input signal (24) at a fundamental frequency (28) into an output signal (32) at a harmonic frequency (34). A non-linear device (22) converts the input signal (24) into an intermediate signal (38) in which the harmonic...	11/23/1999
5587683	Booster circuit device A booster circuit device comprises: a liquid crystal drive circuit (14) whose dissipated current changes; a timing circuit (11) for outputting a select signal according to the dissipated current of the liquid crystal drive circuit; a drive signal select c...	12/24/1996
5424667	Variable frequency signal generating method A DDS type variable frequency signal generator generates a jitter free and stable output signal regardless of the address interval. If the total number of addressable memory locations of a memory storing digital data is divisible without remainder by an i...	06/13/1995
5369373	Comb data generation A sine wave oscillator provides an input signal to a step-recovery diode (SRD). The SRD produces a wideband series of harmonics of the frequency of the sine wave oscillator that are represented as "lines" in a power r.f. frequency plot. The output of the ...	11/29/1994
4554516	Frequency source having YIG absorption/transmission filter An electronically tunable solid-state microwave frequency source comprises a transmission-absorption filter incorporated within a magnetic structure. The transmission-absorption filter is employed with a tunable solid-state oscillator and tunable solid-st...	11/19/1985
4318045	Symmetrical waveform signal generator having coherent frequency shift capability An apparatus for generating a signal having symmetrical waveform of frequency selectable according to a plurality of input signals. The frequency of the signal changes rapidly in response to changes in the input signals, and frequency changes occur in a c...	03/02/1982
4283768	Signal generator A digital synthesizer is disclosed for generating complex waveforms of seted multiple frequencies and selected phases in the time domain. A plurality of independent frequency sources each produces square waves at its selected fundamental frequency and at...	08/11/1981
4246540	Frequency synthesizer extending method and apparatus An apparatus and method for extending the frequency range of a synthesizer r signal generator upward by several orders of multiplication. The basic stability of the synthesizer or generator is maintained at the higher frequency output. The output band of f...	01/20/1981
4144581	Audio signal processor Random audio signals are converted into sine-waves of corresponding frequency and duration, and harmonics are derived from the sine-waves. The harmonics are controllably attenuated and selectively inverted and combined to form an output signal. The conver...	03/13/1979
4100498	Discrete chirp frequency synthesizer An automatic frequency-hop controller for a surface acoustic wave (SAW) shesizer is used with a means for generating two chirp signals, one having a delay with respect to the other. It comprises a SAW device, adapted to receive the chirp signals. The SAW...	07/11/1978
4085645	Instantly retunable tone generator for an electronic musical instrument DC programmable counters with DC switching provide instant retuning of an entire keyboard of a programmable electronic musical instrument to any one of a plurality of different scales....	04/25/1978

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Class 327/121 - Selective