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7619486 Method for detecting and compensating for temperature effects  
An integrated circuit fabricated in a multiple oxide process can be used to provide a temperature-insensitive circuit. The temperature-insensitive circuit can be a ring oscillator; this ring...
7616070 Electronic oscillators having a plurality of phased outputs and such oscillators with phase-setting and phase-reversal capability  
Disclosed are multiphase oscillators comprising a plurality of delay stages serially coupled in a loop by a plurality of nodes, with the loop being folded to provide two concentric rings of delay...
7612622 Method and device for determining a duty cycle offset  
Embodiments of the present invention relate to a method and device operable to determine a duty cycle offset of a periodic signal and correct the periodic signal to a desired duty cycle. Embodiment...
7612621 System for providing open-loop quadrature clock generation  
A system for providing open-loop quadrature clock generation. The system is implemented by a ring oscillator structure that includes input inverters for receiving an input clock, forward direction...
7610163 Method of controlling quality for a print controller  
A method performed by a quality assurance integrated circuit for a print controller, the quality assurance integrated circuit comprising a memory; a system clock for generating a clock signal;...
7609119 Reference voltage generator for logic elements providing stable and predefined gate propagation time  
A reference voltage generator and a method for generating a reference voltage for a logic device using the reference voltage generator is provided. The voltage reference generator includes a ring...
7605668 Delay stage with controllably variable capacitive load  
Disclosed herein are embodiments of controllably variable capacitor loads that may be used with delay stages or other elements, for example, in a voltage controlled oscillator.
7605666 High frequency digital oscillator-on-demand with synchronization  
A High Frequency Digital Oscillator contains a ring oscillator having an output fn, and having coarse and fine frequency adjustments, wherein the input signal f 1 is the input to both the ring...
7605661 Phase locked loop circuit including digital voltage-controlled oscillator, ring oscillator and selector  
A PLL circuit includes a polyphase reference clock output circuit, which outputs multiple reference clocks, each clock being of different phase. The PLL circuit further includes a digital voltage...
7603095 Apparatus and method of switching intervals  
The present invention provides a way of hysteretic switching for efficiently reducing the heavy switching between two adjacent coarse intervals. The present invention disposes a number of fine...
7602257 Signal generating circuit  
A signal generating circuit is provided. The signal generating circuit may include a plurality of delay circuits coupled to provide a plurality of control signals, a weighted-sum circuit to receive...
7602219 Inverting cell  
An inverting cell including a first inverter having first and second inputs; a second inverter having first and second inputs, wherein the second input of the second inverter is connected to the...
7598819 Electronic circuit with transistors sharing one and the same well  
The disclosure relates to an electronic circuit including at least one first and one second differential pair each including a plurality of transistors. All the transistors of said first and second...
7598818 Temperature compensation for a voltage-controlled oscillator  
An oscillator is provided that includes an oscillating structure generating an output signal with a frequency that drifts as a function of a parameter of its environment, and a compensation circuit...
7592877 Variable frequency oscillator and communication circuit with it  
In a variable frequency oscillator in a semiconductor device, as the variation of an oscillation frequency caused by the variation of temperature and supply voltage and process variation is large,...
7592876 Leakage oscillator based aging monitor  
According to embodiments of the subject matter disclosed in this application, the age of a target circuit component in a semiconductor device may be monitored by using at least one aging leakage...
7589583 Charge pump circuit  
The invention is mainly directed to providing a charge pump circuit which realizes low power consumption. A first clock signal is supplied from an oscillator circuit to capacitor elements forming a...
7589553 Electronic module with organic logic circuit elements  
The invention relates to an electronic module having two or more organic circuit elements connected together to give a logic circuit, said organic circuit elements being made up of organic...
7586380 Bias circuit to stabilize oscillation in ring oscillator, oscillator, and method to stabilize oscillation in ring oscillator  
Bias circuits to stabilize oscillation in ring oscillators, oscillators, and methods to stabilize oscillation in ring oscillators are provided. The ring oscillator includes a plurality of...
7573339 Ring oscillator with ultra-wide frequency tuning range  
Methods and systems for tuning an oscillator are disclosed and may comprise dividing a desired frequency range of a delay-cell based ring oscillator into segments, and tuning the delay-cell based...
7570104 Charge pump circuit control system  
The invention discloses a charge pump circuit control system comprising a level detector, a ring oscillator, and a charge pump circuit. The level detector detects the variation of the output...
7567140 Voltage controlled oscillator having a bandwidth adjusted amplitude control loop  
An apparatus comprising a first circuit and a second circuit. The first circuit may be configured to generate an output signal oscillating at a frequency in response to a first control signal and a...
7567134 System and method for synchronizing multiple oscillators  
A system and method for synchronizing an oscillator with multiple phases at a desired phase angle difference. A relative measure of a phase angle difference between two phases permits each phase to...
7560998 Clock signal output circuit  
1 st to n th pairs of transistors (n=an odd number) are connected in parallel, and each pair of transistors has an upper transistor and a lower transistor connected in series. A point between the...
7554413 Voltage controlled oscillator with compensation for power supply variation in phase-locked loop  
A voltage-controlled oscillator (VCO) according to an aspect of the present invention includes an oscillation unit and a delay time control unit. The oscillation unit generates an oscillation...
7548127 Digitally controlled ring oscillator  
A ring oscillator for generating an output signal, comprising a plurality of serially connected main elements for selectively delaying a signal input thereto, each of the plurality of main elements...
7548126 Phase locked loop circuit and control method thereof  
A phase locked loop circuit includes a voltage controlled oscillator having an oscillating characteristic value changed by a switching signal. A characteristic controller supplies the switching...
7545691 Measuring circuit for qualifying a memory located on a semiconductor device  
A measuring circuit is provided for a memory integrated within a semiconductor device. The measuring circuit includes initializing means and an oscillating loop. The initializing means loadings two...
7545225 Regeneration device for rotary traveling wave oscillator  
An oscillator is described. The oscillator includes segments of two-conductor transmission line being connected together by an odd number of connection means to form a closed loop. A plurality of...
7545199 Power supply circuit for oscillator of semiconductor memory device and voltage pumping device using the same  
Disclosed are a power supply circuit for an oscillator of a semiconductor memory device and a voltage pumping device using the same. In the power supply circuit, a voltage divider divides a voltage...
7541882 On-chip tunable artificial tank circuit  
Disclosed is a tuned circuit tuned to an input signal having a predetermined radio frequency, the tuned circuit comprising a tank circuit having a loaded ring oscillator circuit with a resonant...
7541881 Power supply noise insensitive charge pump, loop filter, VCO control, and VCO  
An oscillating circuit includes a charge pump, a loop filter and a voltage controlled oscillator. The charge pump and the loop filter generates a differential voltage signal. The loop filter is...
7538626 Voltage controlled oscillator circuit with different sized shunt transistors  
A voltage controlled oscillator circuit includes a ring oscillator including a plurality of delay circuits that are connected like a ring and a voltage to current converter circuit for controlling...
7535307 Internal voltage generator and semiconductor memory device having the same, and method of generating internal voltage  
An internal voltage generator includes an oscillator, a cycle control unit and a voltage generator. The oscillator periodically generates a pulse-shaped oscillation signal. The cycle control unit...
7532078 Scannable virtual rail method and ring oscillator circuit for measuring variations in device characteristics  
A scannable virtual rail method and ring oscillator circuit for measuring variations in device characteristics provides the ability to study random device characteristic variation as well as...
7528669 Delay cell for voltage controlled oscillator including delay cells connected as a ring oscillator  
A delay cell for use in a voltage controlled oscillator includes a differential amplifier having a pair of outputs, a common source resistive element supplying current to said differential...
7528668 Differential amplifier, differential amplifying method, and phase locked loop and delay locked loop using the same  
A differential amplifier includes an input stage, a biasing unit and a load unit. The input stage receives a first phase signal and at least two phase signals among odd-numbered phase signals,...
7522008 Injection locker frequency divider  
An injection locked frequency divider includes a ring oscillator, a first injection unit and a second injection unit. The ring oscillator includes a first delay cell and a second delay cell each...
7521986 Switch element driver circuit and semiconductor device  
Noise generation is reduced further. Oscillation control circuit 11 generates a modulation signal modulating oscillation frequency of an oscillation signal generated by oscillation circuit 12 ...
7515008 Semiconductor integrated circuit having oscillator frequency compensation function  
It is desired that the temperature dependency of the frequency of a oscillator in a semiconductor IC is compensated in high precision. First signal voltage having temperature dependency and second...
7515005 Variable frequency multi-phase oscillator  
A variable frequency multi-phase oscillator for providing multi-phase signals is disclosed. The variable frequency multi-phase oscillator includes a correlator, a plurality of delay cells, and a...
7515004 Voltage controlled oscillator with duty correction  
A voltage controlled oscillator (VCO) for generating a clock of a 50% duty includes a VCO unit and a duty correction unit. The VCO unit generates first and second signals having a 180° phase...
7511584 Voltage controlled oscillator capable of operating in a wide frequency range  
A voltage controlled oscillator includes a first NMOS transistor having a base terminal configured to receive an input signal INP and a drain terminal connected to an output node OUTN, a second...
7508270 Differential-to-single-ended converter and phase-locked loop circuit having the same  
In a differential-to-single-ended (D2S) converter having reduced power consumption and excellent duty ratio characteristics, and a phase-locked loop (PLL) circuit having the same, the D2S converter...
7504901 Supply voltage controlled voltage and temperature compensated oscillator  
A FET oscillator with increased frequency stability. This is accomplished by using a controlled voltage supply with error correction to power the amplifier stage of the oscillator. This voltage...
7504896 Methods and apparatus for inline measurement of switching delay history effects in PD-SOI technology  
Techniques for inline measurement of switching delay history effects in an integrated circuit device are provided. A pulse is launched down a delay chain. The pulse is substantially synchronized...
7501904 Low power and duty cycle error free matched current phase locked loop  
A phase locked loop with a voltage controlled oscillator, where the voltage controlled oscillator includes a feedback loop and delay cells connected in a ring. Each delay cell has a biased pMOSFET...
7498892 Split-biased interpolated voltage-controlled oscillator and phase locked loop  
A voltage-controlled oscillator (VCO) of ring-connected stages, where each stage in the VCO has a first set of differential inverters biased by variable bias voltages, and a second set of...
7498887 High frequency digital oscillator-on-demand with synchronization  
A High Frequency Digital Oscillator contains a ring oscillator having an output fn, and having coarse and fine frequency adjustments, wherein the input signal f 1 is the input to both the ring...
7498886 Clock distribution system and method thereof  
A clock distribution circuit and a method thereof. The clock distribution circuit comprises a comparator, a filter, a scaling unit, and an oscillator. The comparator compares a reference signal and...
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