Matches 101 - 150 out of 1023 < 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 >
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7382203 Voltage controlled oscillator and delay circuit thereof  
A delay circuit, which is included in a ring oscillator, comprises a current source for providing a current; a first circuit coupled to the current source for receiving an input signal and...
7382202 Apparatus and method to provide a local oscillator signal from a digital representation  
An apparatus provides a local oscillator signal based on a selected channel of an RF input signal. For example, the apparatus can set a frequency of the local oscillator signal based on the...
7372340 Precision frequency and phase synthesis with fewer voltage-controlled oscillator stages  
A clock synthesis circuit) including a phase-locked loop and one or more frequency synthesis circuits is disclosed. The phase-locked loop includes a voltage-controlled oscillator (VCO) having a...
7369600 Burst communications apparatus and method using tapped delay lines  
A communications apparatus and method use tapped delay lines as multiplexers and demultiplexers. In one embodiment, a receiver ( 100 ) uses a tapped delay line ( 110 ) as a demultiplexer to acquire...
7362189 Oscillator circuit with regulated V-I output stage  
A voltage controlled current source outputs oscillator drive current and oscillator equivalent current. A signal oscillator outputs first source oscillation signal and second source oscillation...
7355488 Differential amplifier for use in ring oscillator  
A differential amplifier circuit for use in a ring oscillator includes first and second MOS transistors to each source of which an operating power source voltage is applied, and which individually...
7352213 Ac powered logic circuitry  
The use of an alternating current (ac) source to power logic circuitry can support satisfactory device performance for a variety of applications, while enhancing long-term stability of the...
7352253 Oscillator circuit with tuneable signal delay means  
The invention discloses an oscillator circuit ( 100, 200, 300, 400 ), comprising an oscillating element ( 110, 210, 310, 410 ) and output means ( 115, 215, 315, 415 ) for outputting an oscillation...
7352252 Circuit and method to measure threshold voltage distributions in SRAM devices  
A circuit for inline testing of memory devices which provides information on the variation of the threshold voltage. The circuit includes an array of ring oscillators with a series of inverters,...
7339439 Voltage-controlled oscillator with multi-phase realignment of asymmetric stages  
A multi-phase realigned voltage-controlled oscillator (MRVCO) achieves phase realignment based on charge injection in the VCO stages. The individual VCO stages provide an oscillating output signals...
7336134 Digitally controlled oscillator  
A tunable oscillator suitable for use in a frequency synthesizer of a transceiver is controlled by varying one or more parameters associated with the oscillator. In particular, a digital control...
7332978 Glitch free controlled ring oscillator and associated methods  
A glitch free controlled ring oscillator may comprise a programmable delay chain connected to a gating and inverter stage or means. A latch or latching means may be provided between the delay chain...
7330081 Digitally controlled oscillator and associated method  
A digitally controlled oscillator circuit is provided that comprises a ring oscillator including multiple inverters; multiple digitally controlled capacitors (DCCs), each coupled to apply a...
7330080 Ring based impedance control of an output driver  
One embodiment in accordance with the invention is a method that can include utilizing a ring oscillator module to determine a process corner of an integrated circuit as fabricated that includes...
7328115 Quality assurance IC having clock trimmer  
A quality assurance integrated circuit for a print controller is provided. The IC has a memory, a system clock having a ring oscillator for generating a clock signal, clock trim circuitry for...
7323908 Cascaded pass-gate test circuit with interposed split-output drive devices  
A cascaded pass-gate test circuit including interposed split-output drive devices provides accurate measurement of critical timing parameters of pass gates. The rise time and fall time of signals...
7321269 High frequency ring oscillator with feed-forward paths  
An inverting circuit comprises a first inverter in a main path having a first input and a common ouput. A second inverter receives the first input and is coupled with a first voltage controlled...
7321270 Current-controlled CMOS ring oscillator circuit  
A ring oscillator having an odd number of active elements connected in series, where the signal output of one active element is connected to the signal input of the next active element to form a...
7319367 Programmable oscillators for high frequency clock generation for simulation environments  
A method and programmable oscillator model are provided for implementing high frequency clock generation for a simulation environment. The programmable oscillator model includes an internal ring...
7315213 Semiconductor device and voltage-controlled oscillation circuit  
A voltage-controlled oscillation circuit ( 15 ) includes a plurality of independent ring oscillation circuits different in the number of stages; and a selector ( 22 ) selectively outputting as a...
7315221 Method and circuit for controlling a refresh of a semiconductor memory device  
A refresh control circuit includes a reference voltage generating circuit and an oscillator unit. The reference voltage generating circuit generates a reference voltage based on a variation in a...
7315220 Voltage controlled oscillator  
A voltage controlled oscillator (VCO) having a single stage ring-oscillator having both coarse and fine control of the frequency of oscillation is described. In an embodiment the VCO may include a...
7315219 Multiphase voltage controlled oscillator  
A multiphase voltage controlled oscillator includes at least one ring oscillating unit and a resistor ring; the ring oscillating unit is formed by connecting a plurality of phase-delay elements in...
7312669 Oscillation circuit  
An oscillation circuit for generating two oscillation signals having a phase difference of 90° by using an LC oscillator has a disadvantage for integration. Therefore, a differential type ring...
7312667 Statically controlled clock source generator for VCDL clock phase trimming  
The present invention addresses the generation of a controlled clock source for use in trimming VCDL delay line output clocks. In this trimming process, adjustments are made for static variations...
7312668 High resolution PWM generator or digitally controlled oscillator  
A high resolution pulse width modulation (PWM) or voltage controlled output (DCO) generator is disclosed. The resolution is increased over that of the circuit clock by delaying the generated signal...
7310022 CPU-based oscillation frequency control circuit eliminating the need for a loop filter  
An oscillation frequency control circuit comprises a frequency counter that counts to measure a frequency of an oscillating signal outputted from an oscillation circuit which produces the...
7307482 Ring oscillator setting apparatus and method depending on environmental changes of an image formation apparatus  
A ring oscillator setting apparatus and method depending on an environmental change of an image formation apparatus is provided. The apparatus includes a plurality of ring oscillators for...
7307483 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...
7302026 Clock recovery circuit and electronic device using a clock recovery circuit  
A clock recovery circuit includes a phase discriminating circuit for discriminating, at every edge of a received data signal, phase lead or phase lag of an identically directed edge of the clock...
7301410 Hybrid current-starved phase-interpolation circuit for voltage-controlled devices  
A hybrid circuit includes a current-starved voltage-controlled circuit configured to adjust a first type of signal difference, and a phase-interpolated voltage controlled circuit configured to...
7301413 Voltage controlled oscillator and PLL circuit  
A voltage comparing circuit activates a first voltage comparison signal when a control voltage is lower than a first reference voltage and a second voltage comparison signal when the control...
7301409 Oscillator  
In the current-controlled oscillator performing an oscillation frequency control by using a differential amplifier circuit, resistors are inserted to each current path of a differential pair of the...
7295079 Current-controlled oscillator  
The present invention provides a current controlled oscillator comprising a first section providing a first differential output and a second section providing a second differential output. A...
7292109 Auto-calibrated time base apparatus, systems, and methods  
Apparatus, systems, methods, and articles may divide a frequency associated with an output of an oscillator formed in a semiconductor substrate using a programmable fractional-N divider module...
7286020 Techniques for monitoring and replacing circuits to maintain high performance  
Techniques are provided for monitoring the performance of circuits and replacing low performing circuits with higher performing circuits. A frequency detector compares the frequency of a first...
7283005 Clock-pulse generator circuit  
The circuit comprises a first ring oscillator comprising an odd number of inverting elements, a delay element and an output terminal; the delay element responds to a pulse at its input with a...
7279995 Circuit for controlling the time duration of a signal  
A circuit controls the pulse width of an output signal from a voltage controlled oscillator. The voltage controlled oscillator includes a ring oscillator comprising a plurality of series-connected...
7279996 Method of functionality testing for a ring oscillator  
A method and apparatus is provided for testing the logic functionality and electrical continuity of a ring oscillator comprising an odd number of inverters connected to form a closed loop. In the...
7279997 Voltage controlled oscillator with a multiple gate transistor and method therefor  
A voltage controlled oscillator (VCO) has a plurality of series-connected inverters. Within each inverter a first transistor has a first current electrode coupled to a first power supply voltage...
7276983 Frequency synthesizer with on-chip inductor  
A system and method are disclosed for generating a synthesized signal. A frequency synthesizer is used. The frequency synthesizer includes an input interface configured to receive an input signal...
7271670 CR oscillation circuit  
A CR oscillation circuit comprises first and second logic elements, a capacitive element, and a resistive element. The first logic element is connected between a first node and a second node. The...
7271676 Method and/or apparatus for implementing a voltage controlled ring oscillator having a multi-peak detected 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 first frequency in response to (i) a first control...
7271669 Voltage controlled oscillator and phase locked loop circuit having the same  
A voltage controlled oscillator and a phase locked loop circuit having the same reduce power consumption by using charges leaked into a ground voltage terminal for an output driving operation with...
7268635 Circuits for voltage-controlled ring oscillators and method of generating a periodic signal  
Circuits and methods and for generating oscillator outputs using standard integrated circuit components. The basic circuit generally includes two inverters and a variable capacitor to configure a...
7265638 Ring oscillator circuit  
A ring oscillator circuit includes a ring of cascade-coupled delay stages and is controlled by a plurality of multiplexers. A feedback circuit has an input terminal coupled to an output terminal of...
7266474 Ring oscillator structure and method of separating random and systematic tolerance values  
A ring oscillator test structure comprises at least two overlapping rings that are switchable between different numbers of stages. A delay distribution is measured for various numbers of stages in...
7265639 Methods and apparatus for ring oscillator based MOSFET gate capacitance measurements  
An integrated circuit device is provided having a reference ring oscillator circuit having a plurality of stages. Each stage has a logic gate and electrically connecting to a first independent...
7262669 Control circuit for refresh oscillator  
The present invention relates to a circuit for controlling a refresh oscillator, and more specifically, to a circuit for controlling a refresh oscillator, wherein refresh characteristics can be...
7259634 Arrangement and method for digital delay line  
An arrangement ( 100 ) and method for a high precision and low distortion digital delay line with infinite delay. The digital delay line has an oscillating ring ( 110 ) with an odd number of...
Matches 101 - 150 out of 1023 < 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 >