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| Number | Title | Issue Date |
| 8188775 | Circuit arrangement for operating voltage detection A circuit arrangement for operating voltage detection has a detection block (1) and a control block (2). Detection block (1) has a first transistor (P1) that is connected between a first supply voltage terminal (VDD) and a first node (K | 05/29/2012 |
| 8183898 | Apparatus for supplying voltage free noise and method of operation the same A voltage supply apparatus includes a power noise sensing unit, a voltage selecting unit, a first power voltage supply unit and a second power voltage supply unit. The power noise sensing unit senses noise from first and second powers and outputs a power noise sensi... | 05/22/2012 |
| 8179171 | Power up circuit Power up circuit. An example power up circuit includes a switch for charging a power node of an electronic device. A level detector is used for monitoring charge level of the power node. Further, the power up circuit includes one or more power switches for providing... | 05/15/2012 |
| 8179172 | Auto-restart circuit and auto-restart method Disclosed is an auto-restart circuit and auto-restart method. A main integrated circuit (IC) of a main stage controls a switching operation of at least one power switch. The auto-restart circuit for restarting the main IC detects a switching state of the at l... | 05/15/2012 |
| 8149029 | Electronic device with optical module An electronic device includes an optical module, a power source module powering the optical module, a processor, a controller, and a switch module. The processor generates and maintains a delay signal for a first predetermined time in response to determination that ... | 04/03/2012 |
| 8138807 | Power-on detecting circuit and level converting circuit When a low supply potential has risen while a high supply potential has not risen, a logical value “0” is output as an output signal by applying a ground potential to an input terminal of a latch circuit through a capacitor. On the other hand, when the high supp... | 03/20/2012 |
| 8106689 | Circuit for generating power-up signal of semiconductor memory apparatus A power-up signal generating circuit of a semiconductor memory apparatus includes a current source unit configured to supply a current to a first node; a current sink unit configured to be turned on when the level of a divided voltage dividing an external voltage is... | 01/31/2012 |
| 8106688 | Power-on-reset circuit with brown-out reset for multiple power supplies A power-on reset circuit includes a first circuit and a second circuit. The first circuit include a first NMOS transistor having a gate controlled by a low voltage supply VDD_L, a resistor connected between the source of the first NMOS transistor and a voltage suppl... | 01/31/2012 |
| 8093931 | Semiconductor integrated circuit device In a semiconductor integrated circuit device generating internal power from external power, an abnormal operation may occur due to an indefinite state of a control signal when the external power is applied and the internal power rises. The semiconductor integrated c... | 01/10/2012 |
| 8093932 | Power-on reset signal generation circuit of semiconductor memory apparatus A power-on reset signal generation circuit of a semiconductor memory apparatus includes an external voltage level detector configured to detect an external voltage and generate an external voltage detection signal; a band gap voltage generation unit configured to ge... | 01/10/2012 |
| 8089306 | Intelligent voltage regulator An intelligent voltage regulator circuit in accordance with one embodiment of the invention can include a variable voltage generator that is coupled to receive an input voltage. Additionally, the intelligent voltage regulator circuit can include a processing element... | 01/03/2012 |
| 8072247 | Programmable voltage regulator A circuit in accordance with one embodiment of the invention can include a variable voltage generator that is coupled to receive an input voltage. Furthermore, the circuit can include a non-volatile memory that is coupled to the variable voltage generator. The non-v... | 12/06/2011 |
| 8063674 | Multiple supply-voltage power-up/down detectors A multiple supply voltage device includes an input/output (I/O) network operative at a first supply voltage, a core network coupled to the I/O network and operative at a second supply voltage, and a power-on-control (POC) network coupled to the I/O network and the c... | 11/22/2011 |
| 8063675 | Delay circuit including first and second internal delay circuits and a selection switch Provided is a delay circuit that has a delay time period independent of a power supply voltage and has the equal delay time period between a case of a change in input signal from Low to High and a case of a change in input signal from High to Low. The delay time per... | 11/22/2011 |
| 8063676 | Band-gap reference voltage detection circuit Methods, devices, modules, and systems for a band-gap reference voltage detection circuit are provided. One embodiment for a band-gap reference voltage detection circuit includes a Brokaw cell having a band-gap reference voltage, and a circuit portion for indicating... | 11/22/2011 |
| 8058912 | Electronic device and signal generator thereof An electronic device includes a signal generator and a processing module. The signal generator generates reset signals to reset the processing module. The signal generator includes a first capacitor, a second capacitor, and a switching unit. The first capacitor rece... | 11/15/2011 |
| 8058911 | Programmable power supervisor A programmable power-on reset circuit in accordance with one embodiment of the invention can include a programmable voltage divider. The programmable power-on reset circuit can also include a comparator that is coupled to the programmable voltage divider and that is... | 11/15/2011 |
| 8058910 | Intelligent power supervisor An intelligent power-on reset circuit in accordance with one embodiment of the invention can include a programmable voltage divider. The intelligent power-on reset circuit can also include a comparator that is coupled to the programmable voltage divider and that is ... | 11/15/2011 |
| 8054113 | Power up signal generation circuit and method for generating power up signal A power up signal generation circuit transits a power up signal at a predetermined target voltage level by providing a predetermined hysteresis characteristic to the target voltage level of a power supply voltage corresponding to the power up signal. The power up si... | 11/08/2011 |
| 8054112 | Reset control method and apparatus in power management integrated circuit A reset control apparatus may include a first reference generator adapted to output a first reference value in response to an enable signal from an external power source, a second reference generator adapted to receive the first reference value and to output a secon... | 11/08/2011 |
| 8035428 | Power-up circuit for semiconductor memory device A power-up circuit for a semiconductor memory device includes a voltage division unit configured to divide a power supply voltage, a first power-up generation unit configured to detect a voltage level of a first divided voltage of the voltage division unit during an... | 10/11/2011 |
| 8035427 | Signal generating apparatus capable of measuring trip point of power-up signal and method of measuring trip point of power-up signal using the same A signal generating apparatus that is capable of accurately measuring a trip point of a power-up signal without installing a separate measuring instrument is described. An apparatus for generating a signal includes a power-up signal generating unit that generates a ... | 10/11/2011 |
| 8030979 | Circuit for generating reference voltage A reference voltage generating circuit includes a reference voltage generating unit generating a uniform reference voltage in response to a bias voltage, a bias voltage generating unit generating the bias voltage, and a start-up circuit, after activating the bias vo... | 10/04/2011 |
| 8026746 | Power on reset circuitry for manufacturability and security using a fuse Methods for controlling a Power On Reset (POR) circuit in an Integrated Circuit (IC) are presented. In one embodiment, a method includes an operation for gating a test POR signal configured to selectively disable an output of a POR circuit, and an operation for prog... | 09/27/2011 |
| 8022737 | Electronic device and delay circuit thereof A delay circuit is used for receiving an input signal from a signal source. The delay circuit includes a delay unit, a switch unit, and a generator. The switch unit is used for receiving a voltage from a power supply and selectively transmitting the voltage to the d... | 09/20/2011 |
| 8018256 | Method and system for providing a power-on reset pulse Provided are a method and system for providing a power-on reset pulse. The system includes a level detector configured to receive an input signal and produce, at least indirectly, a reset signal when the input signal reaches a predetermined level. The system also in... | 09/13/2011 |
| 8004321 | Method of implementing power-on-reset in power switches A power switch circuit and method is provided for having the capability of (1) a power switch circuit having a POR in which the switch is enabled at a predetermined voltage such that the switch is unable to be activated when a minimum lower input voltage is not achi... | 08/23/2011 |
| 7999582 | Apparatus for supplying voltage free from noise and method of operation the same A voltage supply apparatus includes a power noise sensing unit, a voltage selecting unit, a first power voltage supply unit and a second power voltage supply unit. The power noise sensing unit senses noise from first and second powers and outputs a power noise sensi... | 08/16/2011 |
| 7969212 | Circuit for generating power-up signal of semiconductor memory apparatus A power-up signal generating circuit of a semiconductor memory apparatus includes a current source unit configured to supply a current to a first node; a current sink unit configured to be turned on when the level of a divided voltage dividing an external voltage is... | 06/28/2011 |
| 7969211 | Power detecting device, power supply device using the same and reference voltage generator A power detecting device, a power supply device using the same, and a reference voltage generator are provided. The power detecting device adapted to detect a power voltage of a display device includes a bandgap voltage generating circuit, a voltage regulating circu... | 06/28/2011 |
| 7965114 | Source driver and method for restraining noise thereof The present invention discloses a source driver and a method for restraining noise output by a source driver during power on/off of a power supply. The source driver includes a multiplexer, at least two channels and at least two output pads. The channels are connect... | 06/21/2011 |
| 7952402 | Power-up control for very low-power systems A power-on-reset (POR) circuit may comprise a first circuit powered by a first supply voltage and configured to generate a second supply voltage based on the first supply voltage, the second supply voltage having a nominal value lower than a nominal value of the fir... | 05/31/2011 |
| 7948283 | Apparatus for awaking an electronic device from a standby mode An apparatus is used to awake an electronic device to an active mode from a standby mode in case of change in the voltage of a power supply of the electronic device. The apparatus includes a power supply for supplying electricity, a switch connected to the power sup... | 05/24/2011 |
| 7948284 | Power-on reset circuit Provided is a power-on reset circuit suitable for a semiconductor device that operates at a low supply voltage. When a supply voltage (VDD) becomes higher than a first output circuit reversal threshold voltage (Vz) after a reset signal is output, a first control cir... | 05/24/2011 |
| 7944255 | CMOS bias circuit A CMOS bias circuit includes a starter circuits and a started circuit part which supplies a current to the outside. The starter circuits has a connection node (first terminal) between it and the started circuit part. The starter circuits includes a first MOS transis... | 05/17/2011 |
| 7940094 | Semiconductor start control device, method, and system A semiconductor device provided which includes: an external power supply detection circuit which detects that an external power supply is turned on and outputs a first detection signal; an internal power supply voltage generation circuit which generates an internal ... | 05/10/2011 |
| 7936191 | Start-up reset circuit and related method A start-up reset circuit includes a flip-flop and a clock signal generator. The clock signal generator generates a first clock signal and a second clock signal, wherein there is a phase difference between the first clock signal and the second clock signal. The flip-... | 05/03/2011 |
| 7928777 | Semiconductor device and method of supplying internal power to semiconductor device Provided is a semiconductor device including a step-down circuit group including multiple step-down circuits that step down an external power supply voltage to a predetermined voltage; multiple functional circuits that require a reset operation upon power-on; and a ... | 04/19/2011 |
| 7928776 | Voltage detection device An voltage detection device includes a comparator circuit comprising a first input terminal connected to a system power supply, a second input terminal connected to a standby power supply, an output terminal capable of outputting a control voltage according to compa... | 04/19/2011 |
| 7924070 | Power-on reset circuit and electronic device using the same A power-on reset circuit, connected to an external direct current (DC) power source, to receive DC power signals and generate a reset signal, includes a delay circuit, a combination circuit and a shaping circuit. The delay circuit comprises a plurality of delay unit... | 04/12/2011 |
