Did You Know...
...that a workman who left the soap mixing machine on too long was responsible for making Ivory Soap? He was so embarrassed by his mistake that he threw the mess in a stream. Imagine his dismay when the evidence of his error floated to the surface! Result: Ivory soap, the soap that floats.
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| Number | Title | Issue Date |
| 8085107 | Transmission module The invention relates to a transmission module for transmitting data in the form of useful digital signals by modulation of a carrier, determined by the useful signals, by means of frequency shift keying. The transmission module contains a PLL circuit with a voltage... | 12/27/2011 |
| 7876170 | Frequency modulator, frequency modulating method, and wireless circuit A voltage controlled oscillator 1, a variable frequency divider 2, a phase comparator 3, and a loop filter 4 form a Phase Locked Loop (PLL). A sigma-delta modulator 5 sigma-delta modulates data obtained by adding a fractional part ... | 01/25/2011 |
| 7741928 | Frequency modulation using a digital frequency locked loop Circuits and methods for frequency modulation (FM) using a digital frequency-locked loop (DFLL). A digitally controlled oscillator (DCO) generates and adjusts a frequency of a modulated signal based on a digital tuning word. A DFLL control logic circuit receives a f... | 06/22/2010 |
| 7667553 | Frequency modulator using PLL In a frequency modulator, a VCO oscillates at a frequency according to a voltage applied to an input terminal. A divider divides an output signal of the VCO. A phase comparator compares the output of the divider with a reference clock signal and outputs a voltage co... | 02/23/2010 |
| 7649428 | Method and system for generating noise in a frequency synthesizer A method and system for generating noise in a frequency synthesizer are provided. The method includes generating a noise portion of an input signal within the frequency synthesizer and appending the noise portion to a control portion of the input signal. ... | 01/19/2010 |
| 7535311 | Direct wideband modulation of a frequency synthesizer A frequency synthesizer modulates a signal by directly modulating a signal input to a voltage controlled oscillator (VCO) associated with the frequency synthesizer. The modulation signal has a bandwidth greater than a closed-loop bandwidth of the frequency synthesiz... | 05/19/2009 |
| 7453325 | Single point modulator having a PLL circuit A single-point modulator (1) has a PLL circuit (2) and a programmable frequency divider (7) whose control connection is connected to a circuit branch for injecting a digital modulation signal (15) which is arranged in the feedback path of... | 11/18/2008 |
| 7439813 | Method and system for generating carrier frequencies for UWB application Apparatus and method for generating first, second and third carrier frequencies of 3432 MHz, 3960 MHz and 4488 MHz respectively, for use in a wireless transmission system deploy only first and second PLLs which are configured to generate 6336 MHz and 2640 MHz signal... | 10/21/2008 |
| 7417514 | Method for modulating phase or frequency in a communication system using clock division A direct division modulator is provided. The direct division modulator includes a symbol mapper converting the input data from a binary bitstream to a desired frequency deviation, such as where the frequency deviation data encodes the information from the bitstream.... | 08/26/2008 |
| 7417513 | System and method for signal filtering in a phase-locked loop system A system and method for modulating a phase component of an electromagnetic signal includes a phase/frequency detector having first and second inputs and an output. The first phase/frequency detector input may be configured to receive a reference signal. The system m... | 08/26/2008 |
| 7411461 | Frequency and/or phase lock loops with beat frequency estimation A control loop (10) for producing an output signal with a stable nominal frequency is provided. The control loop includes inputs for reference (11) and oscillator (25) output signals, a beat frequency generator (12) for producing a signal... | 08/12/2008 |
| 7408416 | Phase locked loop, signal generating apparatus and synchronization method A phase locked loop for outputting a high frequency signal by executing synchronization and frequency conversion based on an input signal includes a control-type oscillator, and a phase comparator circuit for comparing a phase of the input signal and a phase of an o... | 08/05/2008 |
| 7406144 | Clock generator circuit using phase modulation technology and method thereof A clock generator circuit, comprising: a multi-phase clock signal generator for generating a plurality of clock signals having a same frequency but difference phases according to a reference clock signal; a modulation device for generating a phase modulation signal ... | 07/29/2008 |
| 7394885 | Spread-spectrum clock signal generator A spread-spectrum clock signal generator includes a circuit loop receiving a reference signal at a reference frequency and adapted to generate an output signal at an output frequency dependent on and locked to the reference frequency, and a modulator circuit generat... | 07/01/2008 |
| 7391270 | Phase locked loop and method for phase correction of a frequency controllable oscillator A phase locked loop is disclosed and includes a frequency divider circuit with a settable division ratio in a feedback path. The division ratio is produced using a control circuit which, besides an input for supplying the integer and fractional components for the fr... | 06/24/2008 |
| 7382201 | Signal generating apparatus and method thereof A signal generating apparatus is disclosed for generating a synthesized signal according to an input signal, the signal generating apparatus includes a phase-locked loop device for generating the synthesized signal; a control unit for controlling the control signal ... | 06/03/2008 |
| 7372337 | Voltage controlled oscillator comprising an injection pulling compensation circuit The present invention relates to a method for stabilising the operation of a voltage controlled oscillator driven by a phase locked loop, the voltage controlled oscillator delivering an RF signal and receiving through at least one spurious path a harmonic component ... | 05/13/2008 |
| 7365609 | Hybrid stochastic gradient based digitally controlled oscillator gain Kestimation A novel hybrid stochastic gradient adaptation apparatus and method for calibrating the gain of an RF or non-RF digitally controlled oscillator (DCO). The adaptation algorithm determines a true stochastic gradient between a forcing function and its corresponding syst... | 04/29/2008 |
| 7363013 | Phase lock loop applying in wireless communication system and method thereof A phase lock loop receives a baseband signal which has an input frequency, and modulating the baseband signal to be a corresponding RF signal which has a predetermined transmission frequency for transmitting. The phase lock loop comprises a programmable divider, a m... | 04/22/2008 |
| 7356423 | Apparatus and method for reading out a differential capacity with a first and second partial capacity An apparatus for reading out a differential capacity with a first and second partial capacity includes a first oscillator having a first frequency-determining element connectable to the first partial capacity and a second oscillator having a second frequency-determi... | 04/08/2008 |
| 7349516 | Method for trimming a two-point modulator, and a two-point modulator having a trimming apparatus A PLL circuit (1) is regulated by means of a digital modulation signal (28) at a first frequency, and is then regulated at a second frequency, by deactivation of the digital modulation signal (28). A difference signal (32), which is chara... | 03/25/2008 |
| 7342986 | Digital PLL device A phase-locked-loop device includes a clock generator for generating a reference clock based on a binarized playback signal and a frequency of run-length data and for generating N-phase clocks using the reference clock, a pulse-length measuring device for measuring ... | 03/11/2008 |
| 7333582 | Two-point frequency modulation apparatus, wireless transmitting apparatus, and wireless receiving apparatus A two-point frequency modulation apparatus is provided that reduces input timing difference and improves modulation accuracy. Two-point frequency modulation apparatus 10 has: PLL circuit 11; frequency division ratio generator 13 that generates t... | 02/19/2008 |
| 7333789 | Wide-band modulation PLL, timing error correction system of wide-band modulation PLL, modulation timing error correction method and method for adjusting radio communication apparatus having wide-band modulation PLL A broadband modulation PLL includes a PLL portion containing a voltage controlled oscillator (101), a frequency divider (105), a phase comparator (104) and a loop filter (103). A frequency-dividing ratio of the frequency divider (105 | 02/19/2008 |
| 7332972 | Phase-locked loop circuit Phase locked loop circuit (105) having a double entry VCO (158) and two independent charge pumps (171, 172), each connected with one of the entries of the VCO. Each of the VCO entries has a different gain coefficient, thereby allowing a better o... | 02/19/2008 |
| 7324787 | Method of ramping up output level of power amplifier of radio communication system, communication semiconductor integrated circuit, and radio communication system In a radio communication system having a phase control loop for phase modulation and an amplitude control loop for amplitude modulation and being capable of time divisional transmission and reception under a predetermined time management, when transmission in a firs... | 01/29/2008 |
| 7324039 | Short-range automotive radar transceiver Automotive vehicle including a radar transceiver each including a heterodyne active IMPATT multiplier module arranged to receive a signal from a VCO, a first balance mixer arranged to receive a signal from a VCO, a second balance mixer arranged to receive a signal f... | 01/29/2008 |
| 7315602 | Digital spread spectrum frequency synthesizer The present invention provides a digital spread spectrum frequency synthesizer that comprises a noise-shaped quantizer, a divider and an adjustment means. The noise-shaped quantizer is used to quantize a period control word to a time-varying value. The divider is us... | 01/01/2008 |
| 7312663 | Phase-locked loop having a bandwidth related to its input frequency An integrated circuit includes a phase-locked loop (PLL) in which the loop bandwidth of the PLL is proportional to the input frequency of the PLL. The PLL includes a phase/frequency detector (PFD), a charge pump, a loop filter, and a voltage-controlled oscillator (V... | 12/25/2007 |
| 7298220 | Method and apparatus for creating a multiple loop VCO Disclosed herein is a method and apparatus used to create an idealized voltage controlled oscillator (VCO) which allows very high modulation rates without the expected phase noise (jitter) which nominally comes from wide bandwidth VCOs. In this fashion, high quality... | 11/20/2007 |
| 7292118 | Modulator A modulator according to the invention includes: a PLL circuit that detects a phase difference between an input signal and a reference signal, an AGC circuit that controls a gain of a modulating signal and outputs a control signal, and a voltage controlled oscillati... | 11/06/2007 |
| 7292832 | Timing and frequency control method and circuit for digital wireless telephone system terminals A wireless terminal circuit includes a variable high frequency clock oscillator that provides a high frequency clock signal and a fixed low frequency clock oscillator that provides a low frequency clock signal. A phase-locked loop adjusts a ratio of the frequency of... | 11/06/2007 |
| 7292107 | Modulation method and apparatus with adjustable divisors of the dividers in phase-locked loop A modulation method and a modulation apparatus in a phase-locked loop (PLL) provided. The modulation apparatus comprises a modulator, a crystal oscillator, a controllable R-divisor frequency divider, a controllable N-divisor frequency divider and a voltage-controlle... | 11/06/2007 |
| 7288999 | Pre-distortion system for a synthesizer having modulation applied in the reference path A system providing a phase or frequency modulated signal is provided. In general, the system includes a phase locked loop (PLL) having a fractional-N divider in a reference path of the PLL operating to divide a reference frequency based on a pre-distorted modulation... | 10/30/2007 |
| 7289004 | Dual port modulator The present invention relates generally to the field of frequency modulation, and in particular to dual port frequency modulators. The present invention provides a frequency modulator comprising a phase lock loop circuit (108) for receiving and modulating a c... | 10/30/2007 |
| 7283001 | Noise-shaping amplifier with waveform lock A generalized amplifier architecture is described which employs noise-shaping feedback, and for which the output waveform closely resembles the input waveform. ... | 10/16/2007 |
| 7277504 | Method and system for concurrent estimation of frequency offset and modulation index A system for estimating the modulation index and frequency offset of a CPM signal. An estimator filters the received signal and utilizes a training sequence to determine the modulation index and frequency offset of the CPM signal. The estimator can also include a po... | 10/02/2007 |
| 7271678 | Apparatus and method for generating frequencies A frequency generation apparatus and a method are provided. The frequency generation apparatus for generating a plurality of center frequencies for use in multi-band hopping communication, includes: an oscillator generating an oscillation frequency; a reference freq... | 09/18/2007 |
| 7271666 | Method and apparatus for canceling jitter in a fractional-N phase-lock loop (PLL) A method and apparatus improves the stability and noise performance of frequency synthesis and synchronization circuits. A cancellation circuit provides an error signal that is a measure of integrated quantization error in a delta-sigma modulator that controls the r... | 09/18/2007 |
| 7268640 | Frequency generator arrangement A frequency generator is provided. The generator comprises two voltage controlled oscillators generating a first signal of a given multiple of a predetermined raster frequency, and a second signal of another given multiple of a predetermined raster frequency, divide... | 09/11/2007 |
