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| Number | Title | Issue Date |
| 7863944 | Passive clock detector A clock detector is provided. The clock detector generally comprises a filter, a first branch, a second branch, a latch, and logic. The filter is adapted to receive a clock signal and is coupled to a low threshold inverter in the first branch and a high threshold in... | 01/04/2011 |
| 7619446 | Comparator with reduced power consumption and method for the same Techniques pertaining to a comparator circuit with reduced power consumption are disclosed. According to one aspect of the present invention, the comparator unit has a pair of input signal pins VIP and VIN, a pair of output signal pins VOR and VOS, and a clock signa... | 11/17/2009 |
| 7339404 | Deglitch circuit A deglitch circuit capable of removing noise with low power consumption. Voltage is input to a first inverter, connected to a power supply line via a first current source and grounded via a second current source. The first inverter is grounded via a capacitor and co... | 03/04/2008 |
| 7321256 | Highly reliable and zero static current start-up circuits A bandgap reference voltage circuit includes a bandgap circuit, a start-up circuit, and a recovery circuit. Upon device power-on, the start-up circuit provides a start-up current to initialize the bandgap circuit to a valid state, during which the bandgap circuit ge... | 01/22/2008 |
| 7265606 | Apparatus and method for a boot strap circuit for a boost voltage converter A boost converter with a flying capacitor topology is provided. The flying capacitor is charged during a first half of a cycle. During a second half of the cycle, the output voltage of the boost converter is supplied from Vdd until the output voltage approximately r... | 09/04/2007 |
| 7233173 | System and method for providing a low jitter data receiver for serial links with a regulated single ended phase interpolator A system and method is disclosed for providing a clock and data recovery circuit that comprises a low jitter data receiver. The low jitter data receiver comprises a phase interpolator, an amplifier unit and a data sampling comparator. The phase interpolator and the ... | 06/19/2007 |
| 7224203 | Analog voltage distribution on a die using switched capacitors In an embodiment, a switched capacitor transformer transfers a differential reference voltage at its input ports to its output ports, where a capacitor is switched so that the capacitor is coupled to the input ports during a first portion of a cycle of operation and... | 05/29/2007 |
| 7162376 | Circuits, systems and methods for dynamic reference voltage calibration A system comprises a master device and a plurality of memory devices coupled to the master device by an interconnect in an embodiment. The master device obtains a plurality of values representing reference voltage values and selects a first value in the plurality of... | 01/09/2007 |
| 7123058 | Signal detecting circuit and method therefor A stable, low power consumption signal detecting circuit may include: a delay circuit, which receives a base clock signal and generates multiple versions thereof having time delay relationships thereto, respectively; dual amplifiers, which detect valid ones of input... | 10/17/2006 |
| 7116748 | Pulse output circuit, shift register and electronic equipment A driver circuit of a display device, which includes TFTs of a single conductivity type and outputs an output signal with normal amplitude. A pulse is inputted to TFTs 101 and 104 to turn ON the TFTs and a potential of a node α is raised. When the pot... | 10/03/2006 |
| 7091751 | Low-power and low-noise comparator having inverter with decreased peak current Low-power and low-noise CDS (correlated double sampling) comparators for use with a CIS (CMOS image sensor) device are provided. A CDS comparator is constructed using one of various low-power inverters that provide decreased instantaneous transition currents at a lo... | 08/15/2006 |
| 7068788 | Data encryption for suppression of data-related in-band harmonics in digital to analog converters The present invention is related to digital to analog converter (DAC) input data encryption off-chip and decryption on-chip to suppress input data in-band harmonic leakage through package related parasitic capacitance. More specifically, the present invention relate... | 06/27/2006 |
| 6975150 | Apparatus and methods to control laser duty cycle Apparatus and methods to control laser duty cycle are disclosed. According to one example, a driver circuit may include a duty cycle adjustment circuit, an output stage configured to receive an input signal having a duty cycle and a replica output stage configured t... | 12/13/2005 |
| 6973153 | Transmit and receive protection circuit A transmit and receive protection circuit for use in a communication system is disclosed. The protection circuit uses a four-diode gate in which the currents through an input portion and an output portion of the diode gate are individually controlled by resistors lo... | 12/06/2005 |
| 6956427 | Electrically insulated switching element drive circuit An electrically insulated type of switching element drive circuit supplies an AC voltage via a transformer to a control electrode drive circuit that controls a switching element, with the frequency or amplitude of the AC voltage being modulated in accordance with re... | 10/18/2005 |
| 6940243 | Method for commutating an electronically commutated DC motor, and motor for carrying out said method An improved method of commutating an electronically commutated DC motor shuts off application of power between the end of one current pulse and the beginning of the subsequent current pulse. Based upon the instantaneous rotation speed, one calculates at what instant... | 09/06/2005 |
| 6906486 | Electronically commutated motor An electronically commutated motor has a rotor (108), a stator having a stator winding arrangement (102), and a full bridge circuit (137) for controlling the current (i1, i2) in the stator winding arrangement (102); ... | 06/14/2005 |
| 6906484 | Method for limiting the current in an electric motor, and a motor for carrying out one such method A method of limiting current in a DC motor acts on a full bridge circuit (137) through which the stator winding arrangement (102) of that motor is supplied with current. Upon response of the current limiter, energy supply to the stator winding arrangem... | 06/14/2005 |
| 6734710 | Circuit arrangement for pulse generation The invention relates to a circuit arrangement for pulse generation, having a capacitor, to which a charging current and a discharging current may be supplied in succession. To generate the charging current and the discharging current, there are provided a current s... | 05/11/2004 |
| 6686786 | Voltage generator stability indicator circuit A 256 Meg dynamic random access memory is comprised of a plurality of cells organized into individual arrays, with the arrays being organized into 32 Meg array blocks, which are organized into 64 Meg quadrants. Sense amplifiers are positioned between adja... | 02/03/2004 |
| 6628167 | Linearized folding amplifier A linearized folding amplifier circuit (30) includes a comparator (40) that has a first state and a second state, and a switched output circuit that has a pair of outputs. The non-linearity in the response of a differential transistor pair to an input sig... | 09/30/2003 |
| 6559689 | Circuit providing a control voltage to a switch and including a capacitor A circuit for providing a control voltage to a switch includes a capacitor, a first pair of switches for coupling the capacitor to an input voltage source and a second pair of switches for coupling the capacitor to the switch. The first pair of switches i... | 05/06/2003 |
| 6366209 | Method and apparatus for early detection of reliability degradation of electronic devices A circuit that senses changes in the electrical characteristics of a guard ring, and generates one or more signals based, at least in part, on the electrical characteristics that are sensed, is incorporated into an integrated circuit The one or more signa... | 04/02/2002 |
| 6335641 | Automatic input threshold selector An automatic input threshold selector includes a maximum value level decision circuit, and an input threshold setting circuit. The maximum value level decision circuit decides, among m+1 level layers defined by m maximum value decision levels, a level lay... | 01/01/2002 |
| 6204701 | Power up detection circuit A power-up detection circuit to produce a power-up detection signal detects a reference voltage of a device. After a power-up detection has been produced, a DC current path to ground is established to conduct DC current to reset the power-up detection cir... | 03/20/2001 |
| 6094144 | Method and apparatus for early detection of reliability degradation of electronic devices A circuit that senses changes in the electrical characteristics of a guard ring, and generates one or more signals based, at least in part, on the electrical characteristics that are sensed, is incorporated into an integrated circuit. The one or more sign... | 07/25/2000 |
| 6046617 | CMOS level detection circuit with hysteresis having disable/enable function and method A level detection circuit, such as a Schmitt trigger circuit, has an input threshold voltage which varies depending upon the detection circuit output. The circuit includes a level detection stage, circuitry for switching the level detection stage between ... | 04/04/2000 |
| 5999021 | Pad signal detecting circuit in a semiconductor device for detecting a reference voltage in a high-speed interface A pad signal detecting circuit for detecting a reference voltage input to a pad of a semiconductor device. This invention may be used in high speed terminated interfaces using a reference voltage, such as those using stub series termination logic (SSTL). ... | 12/07/1999 |
| 5995420 | Integrated XNOR flip-flop for cache tag comparison An integrated XNOR flip-flop is provided which is faster than conventional XNOR flip-flop combinations. The integrated XNOR flip-flop is faster and uses less area than conventional XNOR flip-flop combinations. The integrated circuit has few gates along th... | 11/30/1999 |
| 5949258 | Data holding circuit A data holding circuit is provided that reduces a setup time and hold time when a data is inputted to effectively transmit output data. The data holding circuit includes a latch unit that samples and holds input data, a delay unit that delays a control si... | 09/07/1999 |
| 5805001 | Zero phase circuit for sampled data phase locked loop A circuit provides a restart signal to indicate a zero crossing of a continuous varying signal. A zero phase signal is generalized based on a zero crossing of the continuous varying signal. The continuous varying signal is sampled and held in accordance w... | 09/08/1998 |
| 5617045 | Input circuit for processing small amplitude input signals There is disclosed an input circuit for a semiconductor integrated circuit device wherein a level shift circuit (LS1) adds a constant voltage to an input signal from an input signal terminal (3) and a reference voltage from a reference voltage terminal (4... | 04/01/1997 |
| 5438289 | Comparator circuit The present invention relates to a comparator circuit which is arranged such that detected data signal is waveform-shaped without producing any bit error, so that the data signal as transmitted can be accurately demodulated. Reference voltage VRE | 08/01/1995 |
| 5331223 | Signal supplying unit having means for selecting signal in accordance with terminal connection A signal supplying unit includes a plurality of terminals, a plurality of signal sources, each of the plurality of signal sources outputting a signal, a detecting circuit for detecting whether or not at least the one of the plurality of terminals is coupl... | 07/19/1994 |
| 5329192 | High speed CMOS current switching circuit A CMOS current steering switch, especially well-suited for use in high speed switching circuits, has a differential switch transistor pair connected to a node, to which a current source is also connected. The gates of the switch transistor pair are contro... | 07/12/1994 |
| 5324992 | Self-timing integrated circuits having low clock signal during inactive periods An integrated circuit function unit operating in a data dependent manner in logic operations of variable lengths of time is provided with a clock signal having a pulse width determined by the active period of the function unit. In one embodiment a current... | 06/28/1994 |
| 5289049 | Signal input selecting circuits A signal input selecting circuit comprises a plurality of signal input terminals, a first switch device for selecting one of signal electrodes of the signal input terminals to be connected with a signal processing block, a second switch device for selecti... | 02/22/1994 |
| 5287012 | Semiconductor integrated circuit equipped with diagnostic circuit for checking reference voltage signal supplied to internal step-down circuit An internal step-down circuit is incorporated in an integrated circuit device for reduction in power consumption as well as for scaling-down, and produces an internal step-down power voltage level regulated to a reference voltage level internally produced... | 02/15/1994 |
| 5283529 | Oscillation maintenance circuit A circuit arrangement is described for generating pulses for maintaining the oscillations of a resonance circuit after termination of an outside stimulation of the oscillations by means of an HF carrier oscillation. The circuit arrangement comprises an en... | 02/01/1994 |
| 5181226 | Threshold level generator A threshold level generator for generating threshold levels to detect zero-crossings of a spread spectrum received waveform. An IF sampler quantizes the received spread spectrum signals at IF. The IF signal is sampled at a number of quarter cycle interval... | 01/19/1993 |
