55results about How to "Reduce Power Noise" patented technology

An integrated control circuit for a resonant power converter includes a minimum-frequency programming circuit connected a first resistor to program a minimum switching frequency of the power converter. A feedback circuit is coupled to a feedback terminal to receive a feedback signal for generating an adjustment signal. A maximum-frequency programming circuit connects a second resistor to determine a maximum switching frequency in response to the adjustment signal. An oscillator is coupled to the minimum-frequency programming circuit and the maximum-frequency programming circuit to generate an oscillation signal for determining the switching frequency of the power converter. A feed-forward circuit is connected to a feed-forward terminal to receive a feed-forward signal represents the input voltage of the power converter. The switching frequency is increased in response to decrease of the feedback signal, and the switching frequency is increased in response to the increase of the feed-forward signal.

A NAND EEPROM having a shielded bit line architecture reduces supply voltage and ground noise resulting from charging or discharging bit lines. The EEPROM has a PMOS pull-up transistor and an NMOS pull down transistor connected to a virtual power node. A control circuit for charging or discharging bit lines controls the gate voltage of the PMOS or NMOS transistor to limit peak current when charging or discharging bit lines via the virtual power node. In particular, the control circuit operates the PMOS or NMOS transistor in a non-saturation mode to limit current. One such control circuit creates a current mirror or applies a reference voltage to control gate voltages. A programming method sets up bit lines by pre-charging unselected bit lines via the PMOS pull-up transistor having controlled gate voltage while latches in the programming circuitry charge or discharge selected bit lines according to respective data bits being stored. Another bit line setup includes two stages. A first stage pre-charges all bit lines via PMOS pull-up, and the second stage uses the latches to discharge or leave charged the selected bit lines depending on respective data bits being stored. The gate voltages of NMOS transistors in the programming circuitry can be controlled to reduce noise caused by discharging selected bit lines through the latches.

A stack package includes a first semiconductor chip first pads and second pads disposed thereon and a second semiconductor chip having third pads and fourth pads electrically connected with the second pads disposed thereon. Capacitors are interposed between the first semiconductor chip and the second semiconductor chip, and include first electrodes electrically connected with the first pads to of the first semiconductor chip, second electrodes electrically connected with the third pads of the second semiconductor chip, and dielectrics interposed between the first electrodes and the second electrodes.

The invention discloses a wearable multimode brain function detection device based on NIRS-EEG. The wearable multimode brain function detection device comprises an NIRS-EEG detection unit, an ultra-low power consumption control unit, a state prompt unit, a Bluetooth communication unit, a key input unit and a power supply unit; the ultra-low power consumption control unit is connected with the NIRS-EEG detection unit, the state prompt unit and the Bluetooth communication unit respectively, the ultra-low power consumption control unit conducts data instruction communication with the NIRS-EEG detection unit through SPI interfaces, the ultra-low power consumption control unit conducts data transmission communication with the Bluetooth communication unit through a UART serial port communication protocol, and the Bluetooth communication unit sends received data to a mobile terminal for subsequent processing; the key input unit is connected with the power supply unit, and the power supply unit is used for supplying power to the NIRS-EEG detection unit, the ultra-low power consumption control unit, the state prompt unit and the Bluetooth communication unit and conducting power supply protection and power management. The wearable multimode brain function detection device has good comfortability, and monitoring on occasions such as the brain cognitive function, neurological and psychiatric diseases and sleep and fatigue states can be conveniently conducted anytime and anywhere.

An output circuit including: a tri-state output circuit capable of outputting high-impedance state, high-level state, and low-level state, in which the high-level state and low-level state are low-impedance state, and switching the high-impedance state and the low-impedance state in accordance with a first control signal; and a delay circuit outputting the first control signal to the tri-state output circuit by inputting a second control signal and delaying the second control signal so that timing delay time of the second control signal switching the high-impedance state to the low-impedance state is longer than the timing delay time of the second control signal switching the low-impedance state to the high-impedance state, is provided.

A method for analyzing power noise and method for reducing the same are disclosed, wherein the present invention is utilized in an IC design process. First, a DC analysis is performed with a related IC design by utilizing computer aided design (CAD) software and circuit simulation software for obtaining a power network model of the IC design. Then, the power network model is defined as being composed of a plurality of unit blocks. After analysis, the quantity and type, etc., of components connected electrically to each of the unit blocks are recognized and are regarded as component reference data of each of the unit blocks. Afterwards, according to the component reference data of each of the unit blocks, the voltage drop (IR drop) occurring in operation for each of the unit blocks is evaluated and obtained by utilizing an equivalent circuit constructed by components that are connected electrically to each of the unit blocks. Therefore, the voltage consumption and distribution in each region of the power network model are obtained, so that at least one appropriate capacitor can be placed on proper locations of the power network model, to compensate the voltage drop caused by the IC design components while in operation, and to decrease the power noise in the IC design.

In the disclosed semiconductor integrated circuit, a plurality of power supply terminals of the logic circuit block are connected to the actual power supply line via the leak current cut-off circuit. When the logic circuit block is to be activated, the delay control circuit controls the leak current cut-off circuit to electrically connect the power supply terminal to the actual power supply line with a delay of the predetermined time. Therefore, when the logic circuit block is activated, voltage drop of the actual power supply line can be lowered to a small value and erroneous operation of the other logic circuit block in the activated condition due to the power supply noise can be prevented.

The peripheral edge at the rear edge of a propeller fan (3), which is driven by a motor (6) serving as a propeller fan driver, is covered with a bell-mouth (4). Multiple plates, namely, a top plate (8), a bottom plate (9), and side plates (10) which constitute an intake-side air duct on the outside of the propeller fan in the radial direction, and a machine room plate (11) are provided. In the cross-section of the bell-mouth at the position where the blades of the propeller fan are closest front to back at a position on the plates where the distance between the propeller fan and the plates that constitute the air duct on the outside in the radial direction is relatively small, the widening angle (?1) of the bell-mouth on the intake-side is set smaller, and the height (Hb) of overlap of the propeller fan and the bell-mouth is set higher, than those in the cross-section at the position where the distance between the propeller fan and the plates is relatively large, and the cross-sectional shape of the bell-mouth is changed gradually between the two positions.

A semiconductor memory apparatus includes a bit line sense amplifier unit and a driving voltage supply unit. The bit line sense amplifier unit senses and amplifies a signal provided from a memory cell using a pull-up driving voltage provided through a pull-up power line and a pull-down driving voltage provided through a pull-down power line. The driving voltage supply unit supplies the pull-down driving voltage having a first pull-down driving force during a first amplification period, and supplies the pull-down driving voltage having a second pull-down driving force greater than the first pull-down driving force during a second amplification period after the first amplification period.

A data output device and method is disclosed, the device having a first comparator for comparing first output data with arbitrary output data on a bit-by-bit basis and outputting a first pre-flag signal which is enabled or disabled according to the number of bits of the first output data having made level transitions, a second comparator for comparing second output data with the first output data on a bit-by-bit basis and outputting a second pre-flag signal which is enabled or disabled according to the number of bits of the second output data having made level transitions, first and second logic units for performing logic operations with respect to pre-flag signals and data inversion flag signals, a first repeater for inverting or non-inverting and outputting a plurality of bits contained in the first output data in response to the first data inversion flag signal, and a second repeater for inverting or non-inverting and outputting a plurality of bits contained in the second output data in response to the second data inversion flag signal.

A semiconductor memory device includes a core block having sub-arrays and sense amplifier regions. First and second charge storing regions are disposed at sides of the core block. First and second decoupling capacitors are formed at the first and second charge storing regions, respectively. A plurality of first voltage supply lines are disposed to supply a power supply voltage to the sense amplifier regions and are connected to one electrode of each of the first and second decoupling capacitors. A plurality of second voltage supply lines are disposed to supply a ground voltage to the sense amplifier regions and are connected to the other electrode of each of the first and second decoupling capacitors.

The invention discloses a power consumption attack method and system for DES algorithm L register flipping, and relates to the technical field of DES hardware module safety evaluation, and the methodcomprises the following steps: generating a 32-bit random number R through RNG, and generating a corresponding plaintext; inputting the plaintext into a hardware module with a DES algorithm for operation, collecting power consumption information during operation, generating a power consumption curve, and repeatedly executing the operation until the collected power consumption curve meets the requirement of DPA attack; calculating by utilizing plaintext and guessing keys; selecting an intermediate value corresponding to the plaintext, wherein the intermediate values of the plaintext form an intermediate data array; repeatedly calculating to obtain a plurality of intermediate data arrays corresponding to the plurality of guessing keys; respectively calculating the relevance of the pluralityof intermediate data arrays and power consumption data to find the guessing key corresponding to the intermediate data arrays with the maximum relevance. According to the DES hardware module securityassessment method and device, the SNR can be effectively improved, the DPA attack effect can be enhanced, and the security assessment accuracy of the DES hardware module can be improved.

The invention provides a mainboard with an integrated flash memory storage unit. The mainboard comprises a memory control module, an input / output control module, and an integrated flash memory storage unit which is integrated on the mainboard for storing data, a flash memory controller which is connected with the integrated flash memory storage unit, receives commands of the input / output control module and controls the communication of the integrated flash memory storage unit, and a direct memory access controller which cooperates with the flash memory controller in the control of the communication of the integrated flash memory storage unit. The mainboard with flash memory storage provided by the invention makes use of the advantages of quick reading and writing speed, good shock resistance and low power consumption of flash memory and uses the flash memory as a storage medium to form a storage unit of a computer, and the direct integration of the flash memory on the mainboard simplifies a circuit and reduces the volume and weight of the mainboard. According to the characteristics of the flash memory, the flash memory storage unit has a higher speed, lower energy consumption and noise as well as better safety compared with hard disk.

A semiconductor chip package illuminates and minimizes a power noise generated from a voltage generation circuit in the semiconductor chip package includes an integrated circuit chip with a voltage generation circuit that receives an external voltage to generate a supply voltage to be used in an internal circuit and a connection terminal connected to an output node of the voltage generation circuit, and a mounting substrate including a noise eliminator electrically connected to the connection terminal to reduce a power noise of the supply voltage and a mounting substrate to mount the integrated circuit chip to package the integrated circuit chip as the semiconductor chip package.

A thin film capacitor is provided which includes a single crystal high dielectric constant dielectric layer. The thin film capacitor has a single crystal silicon substrate, a single crystal intermediate layer epitaxially grown on the single crystal silicon substrate, a single crystal lower electrode epitaxially grown on the single crystal intermediate layer, a single crystal high dielectric constant dielectric layer epitaxially grown on the lower electrode layer, an upper electrode layer formed above the single crystal high dielectric constant dielectric layer, and a plurality of conductor terminals connected to the lower electrode layer and upper electrode layer at a plurality of positions.

A semiconductor memory device includes an internal clock generator configured to generate an internal clock signal having a first clock period in response to a chip enable signal and change the first clock period of the internal clock signal in response to a clock control signal, and a controller configured to receive external commands including the chip enable signal and generate the clock control signal corresponding to a first external command other than the chip enable signal. Here, the semiconductor memory device performs a data input / output operation in response to the internal clock signal with the changed clock period.

The invention relates to the technical field of automatic carrying equipment, and particularly discloses an industrial intelligent motion control carrying robot. The robot comprises a motion chassis, a carrying plate is arranged on the motion chassis, an electric rotating disc is arranged between the motion chassis and the carrying plate, a carrying fork is arranged on one side of the upper portion of the carrying plate, automatic lifting of the carrying fork is achieved through a lifting power driving structure, an electric control box is arranged on the other side of the upper portion of the carrying plate and comprises a control system and a sensor system, a rotatable mechanical shaft arm structure is arranged between the carrying fork and the electric control box, a rotatable telescopic mechanical arm is arranged at the top end of the mechanical shaft arm structure, a rotatable mechanical gripper structure is arranged at the top end of the telescopic mechanical arm, and the mechanical gripper structure comprises a movable and turnable gripping plate. The high-low-position automatic carrying requirement is met, automatic loading and unloading are achieved in the whole process, and the overall automation degree is high.

The invention relates to a defectivity-immune technique of implementing MIM-based decoupling capacitors. An integrated circuit power supply decoupling circuit includes a capacitor and a protection circuit. The capacitor has a first terminal and a second terminal. The protection circuit includes a first transistor having a first conduction path, and a second transistor having a second conduction path. One terminal of the first conduction path is connected to the first terminal of the capacitor, and another terminal of the first conduction path is connected to a first power supply rail. One terminal of the second conduction path is connected to the second terminal of the capacitor, and another terminal of the second conduction path is connected to a second power supply rail.

A semiconductor chip package eliminates and minimizes a power noise generated from a voltage generation circuit in the semiconductor chip package includes an integrated circuit chip with a voltage generation circuit that receives an external voltage to generate a supply voltage to be used in an internal circuit and a connection terminal connected to an output node of the voltage generation circuit, and a mounting substrate including a noise eliminator electrically connected to the connection terminal to reduce a power noise of the supply voltage and a mounting substrate to mount the integrated circuit chip to package the integrated circuit chip as the semiconductor chip package.

The invention discloses a dust removal method and device for a ground horizontal well of a coal mine roadway driving face. The method comprises the steps that firstly, the ground horizontal well is reversely designed along a to-be-driven roadway; secondly, directional drilling of the ground horizontal well is conducted on a coal seam, and an easily-cut hole protection screen pipe is put into a horizontal section of the ground horizontal well and provided with holes; thirdly, water is injected into the ground horizontal well from the ground in a pressurized mode, and the water is injected into the coal seam through the holes of the hole protection screen pipe; and finally, coal mine roadway driving face driving is conducted, and when the driving face reaches the tail end of the horizontal section, a dust removal system arranged on the ground is started to pump and discharge dust generated by the driving face. According to the dust removal method and device for the ground horizontal well of the coal mine roadway driving face, the problems that the dust causes safety production of the driving face and worsens the working environment are solved, power noise is reduced, the construction efficiency of the driving face is improved, the health of underground constructors is protected, and the requirements for comprehensive dust prevention, safety, economy, energy conservation and environmental protection of the driving face are met.

A printed circuit board (PCB) includes at least one power trace. A plurality of etched portions are defined in the at least one power trace, acting as electromagnetic bandgaps for transferring resonant frequencies produced around the at least one power trace to avoid working frequencies of the PCB, thereby reducing power noise around the at least one power trace.

A power amplifier including a delta-sigma modulation module, a differential programmable dead-time-control module, and an output stage module is provided. The delta-sigma modulation module integrates and quantizes an error between a differential-mode input signal and an output signal to generate a first and a second mean signal. The differential programmable dead-time-control module includes a first and a second dead-time-control module which respectively generate a first and a second signal corresponding to the first mean signal and a third and a fourth signals corresponding to the second mean signal through logic calculations. The differential programmable dead-time-control module determines a dead time between the first signal and the second signal according to a first control signal and a dead time between the third signal and the fourth signal according to a second control signal. The output stage module generates the output signal according to the first, second, third, and fourth signal.

An image sensor including a first pixel circuit, a second pixel circuit, a first readout line, a second readout line, a first readout circuit, a second readout circuit and an average switch is provided. The first and second pixel circuits are in two columns of a pixel array. The first readout line transmits pixel data of the first pixel circuit to the first readout circuit. The second readout line transmits pixel data of the second pixel circuit to the second readout circuit. The average switch is arranged between the first and second readout lines and used to electrically connect the first and second readout lines in an average mode to average the pixel data on the first and second readout lines.

The invention discloses a wearable brain function detection device based on NIRS. The wearable brain function detection device comprises an NIRS detection unit, an ultra-low power consumption control unit, a state prompt unit, a bluetooth communication unit, a key input unit and a power supply unit, wherein the ultra-low power consumption control unit is connected with the NIRS detection unit, the state prompt unit and the bluetooth communication unit respectively, is in data command communication with the NIRS detection unit through an SPI interface, controls the working mode of the NIRS detection unit, and is in data transmission communication with the bluetooth communication unit through a UART serial communication protocol, and the bluetooth communication unit sends the received data to a mobile terminal for follow-up processing; the key input unit is connected with the power supply unit, the power supply unit is used for providing electricity for the NIRS detection unit, the ultra-low power consumption control unit, the state prompt unit and the bluetooth communication unit, and carries out power supply protection and power management. The wearable brain function detection device is small in size, the detection result is accurate, the power consumption is extremely low, and the real-time monitoring on the brain blood-oxygen based on NIRS is convenient.