33results about How to "Reduce leakage power consumption" patented technology

In one embodiment, an integrated circuit includes a power management architecture in which one or more pipelines are actively powered and clocked when data is provided for processing, but which are clock gated and in retention when there is no data to be processed. When data is provided to the pipeline, supply voltage may be actively provided to initial stages of the pipeline and the clocks may be ungated when the voltage is stable enough for operation. Subsequent stages of the pipeline may be sequentially provided power and clocks as the data progresses through the pipeline. Initial stages may be clock gated and power may be deactivated when additional data is not provided for processing. Accordingly, when the pipeline is viewed as a whole, power may be seen as rolling forward ahead of the data processing, and power may be inhibited in a similar rolling fashion.

A diode heat pump is disclosed which may be deposited directly onto a processor unit using thin-film deposition techniques to achieve more efficient cooling. The diode heat pump is either formed in situ on the processor unit or attached to the processor unit after each unit has been manufactured. Further embodiments of diode heat pumps are also disclosed.

The invention discloses a small-size SoC ultra-low power consumption control circuit and method. The circuit structurally comprises a logic circuit system, a low power consumption control module a power management module, a clock management module and a low-frequency clock module. When an idle state is required, a voltage value at a power supply end of the logic circuit system is reduced, by the low power consumption control module on hardware, to only keep a data state in the logic circuit system and not support a lowest value of signal reversal, and meanwhile, a clock source of the logic circuit system is closed to eliminate logic dynamic power consumption and reduce electric leakage power consumption to be the lowest; and moreover, software is not required for storing a system operationstate, and when awakening is carried out, the software is not required to restore the scene and the next instruction of the system can be directly operated, so that the awakening speed is improved and the user experience is strengthened.

The invention provides a low power consumption design method for a SRAM (static random-access memory) type FPGA (field-programmable gate array), which includes steps: firstly, building a leakage power information graph according to structure and circuit information of the FPGA; secondly, evaluating leakage power of each MUX during wiring phase to obtain the leakage power; thirdly, importing the leakage power to wiring cost function to lower circuit leakage power. By implementing low power consumption design during the wiring phase and comprehensively considering delay consumption, congestion consumption and leakage power consumption of the circuit during the wiring process, timing performance of the circuit is hardly affected. By modifying circuit wiring manner to implement low power consumption design, the method is irrelevant with chip structure of the FPGA and suitable for current mainstream FPGA, processing of the FPGA chips is not affected and no extra area consumption is imported.

According to a pixel driving circuit and a display panel provided by the invention, the pixel driving circuit of a 5T1C structure is adopted to effectively compensate the threshold voltage of a driving transistor in each pixel, so that the electric leakage power consumption of the pixel driving circuit during threshold voltage extraction can be effectively reduced, and the compensation precision of the pixel driving circuit is further improved.

The invention discloses a memory cell structure of an SRAM (static random access memory), a main body structure consists of two NMOS (N-channel Metal Oxide Semiconductor) tubes and six PMOS (p-channelmetal oxide semiconductor) tubes, and the two transmission tubes are both PMOS (p-channel metal oxide semiconductor) tubes. The drain electrodes of the first NMOS tube and the second PMOS tube and the grid electrodes of the fifth PMOS tube and the second NMOS tube are connected with a Q node; the drain electrodes of the second NMOS tube and the third PMOS tube and the grid electrodes of the sixthPMOS tube and the first NMOS tube are connected with a QN node; the drain electrode of the first PMOS tube, the source electrode of the fifth PMOS tube, the grid electrode of the third PMOS tube andthe grid electrode of the fourth PMOS tube are all connected with a third node; the drain electrode of the fourth PMOS transistor, the source electrode of the sixth PMOS transistor and the grid electrodes of the first PMOS transistor and the second PMOS transistor are all connected with a fourth node; the source electrodes of the first to fourth PMOS tubes are connected to a power supply voltage,and the source electrodes of the first NMOS tube and the second NMOS tube and drain electrodes of the fifth PMOS tube and the sixth PMOS tube are grounded. The soft error resistance and the read static noise tolerance of the circuit can be improved, and the electric leakage power consumption can be reduced.

The invention relates to a low-power design optimization method for an instruction-level parallel (ILP) processor. The method comprises the steps of analyzing a hardware resource and parallelism demand information of each part of an input application program by utilizing a compiler, and obtaining basic blocks of the application program as well as a control flow graph (CFG) and loop hierarchy trees (LHTs), which are formed by the basic blocks; identifying regional cores; expanding a region, combining the residual basic blocks in the region, finding out the regional cores directly connected with the residual basic blocks, comparing executive frequencies of edges connecting the regional cores, finding out the edge with the maximum executive frequency, and combining the basic block connected with the maximum edge in the regional cores until the residual basic blocks do not exist; and re-scheduling the application program, scheduling each region by using the set parallelism, inserting a power gating instruction before executing each region, and turning off idle hardware resources to reduce electric leakage power consumption. According to the method, the influence of the electric leakage power consumption on the working performance of the processor can be reduced and the utilization rate of the hardware resources in the ILP processor can be increased.

The invention provides a low-electric-leakage bi-CPU core safe chip configuration, which realizes minimal safe physical isolation and static power consumption. The configuration employs two CPU subsystems, one of which is a low performance and low power dissipation logic gate count for processing communication interface and other non-security applications. The other CPU subsystem is a high-performance high-security CPU for providing complex and high performance cipher calculation, sensitive information processing and other high security applications. The high-performance CPU system is high in logic complexity, and a power supply is cut off by a gate control when a chip enters into a standby state to lower the integral electric leakage and power consumption of the chip.

The present invention relates to a feed-through signal transmission device/method and a related feed-through signal transmission circuit. The device comprises feed-through signal transmission circuits, each feed-through signal transmission circuit includes at least one subcircuit, wherein when the subcircuit executes the feed-through signal transmission, the subcircuit keeps the power-on state, and the subcircuit includes a relay for feed-through normal opening and a normally opening control cell. When the subcircuit executes the feed-through signal transmission, the power-on state of the subcircuit is kept, wherein the subcircuits of the feed-through signal transmission circuit are located at the position of the single silicic chip areas based on the grids. The feed-through signal transmission device/method and the related feed-through signal transmission circuit can perform cutting-off according to the requirement so as to greatly reduce the electric leakage power loss.

The invention discloses a level shifter. The level shifter comprises a Wilson current mirror circuit and a phase inverter circuit. The Wilson current mirror circuit is connected with the inverter circuit, the inverter circuit comprises an inverter circuit PMOS tube and an inverter circuit NMOS tube, an output end of the Wilson current mirror circuit is connected with a grid electrode of the PMOS tube of the inverter circuit and a grid electrode of the NMOS tube of the inverter circuit, a source electrode of the PMOS tube of the inverter circuit is connected with a inverter circuit power supply, a drain electrode of the PMOS tube of the inverter circuit is connected with the drain electrode of the NMOS tube of the inverter circuit, and a source electrode of the NMOS transistor of the inverter circuit is grounded. The level shifter has the advantages that the circuit structure is simple, and the delay time and the power consumption of the circuit can be effectively reduced.

The invention discloses a low-power, low-area, non-compete 1 bit full adder standard cell, having first to third input terminals, a Carry bit output terminal and an And bit output terminal, wherein the minimum operating voltage is less than or equal to 0.81V, the low-power, low-area, non-compete 1 bit full adder standard cell comprises: an exclusive OR circuit, for generating an exclusive OR signal required by And bit and Carry bit output; a summing circuit for outputting an And bit related signal; and a Carry bit output circuit, which outputs Carry bit result using coupling of a transmission pipe to a mirror circuit. The working condition of the circuit of the invention covers all process corners and harsh temperature ranges (-40 DEG C to 125 DEG C), there is no competition of Carry bit output terminal, and the invention is applicable for computing cell modules in various consumer electronic products.

The invention provides a low-power-consumption low density parity check code (LDPC) decoding device in a China mobile multimedia broadcasting (CMMB) receiving machine, which consists of an LDPC decoder, a power supply control unit and a control register unit, wherein the LDPC decoder consists of an initialization unit, an iterative decoding unit, a decoding output unit and a decoding control unit, and the power supply control unit provides an electricity supply power supply for the LDPC decoder and controls the work state of the LDPC decoder, so the goal of saving dynamic and electricity leakage power consumption is reached. Simultaneously, the control register unit stores and provides the base band chip control information and the internal state information before the dormancy state of the LDPC decoder for the LDPC decoder. Simultaneously, the invention also provides an implementation method of the low-power-consumption LDPC decoding device. Through the device and the method, the decoder electricity leakage power consumption and the dynamic power consumption can be effectively reduced, so the power consumption of a receiving machine chip in the application can be reduced.

An automobile electronic safety device having a dual energy and a dual effect and being energy-saving and emission-reducing relates to the field of energy-saving and emission-reducing automobile electronic safety and consists of a main machine and two auxiliary machines. The main machine comprises an outer round housing, an energy-saving control circuit board, a resistor, capacitors, diodes and switches. An anode of a control pole communicates with an anode cap of a tail end. A cathode communicates with a cathode spring on the external part of the housing. A tail part is inserted into any hole of a first auxiliary machine to communicate with the first auxiliary machine. Effect is upon a circuit to generate strong electric sparks to ignite fuel oil so that fuel saving and emission reduction can be realized. The first auxiliary machine has a power connector which is capable of automatic-tracking voltage detection and comprises a square housing, seven diodes of a control circuit, and resistors. Yellow, green, and red luminous tubes indicate that the voltage is low, normal and high. A control terminal communicates with an automobile output terminal. The first auxiliary machine is used to automatically track and display measured voltage to guarantee the security of the circuits during driving. A second auxiliary machine capable of face recognition comprises a long housing and a face-recognizing control circuit. A control circuit terminal communicates with the main machine. The second auxiliary machine is used to identify the identity of a car owner to guarantee the security of automobile assets. The main machine and the auxiliary machines can constitute an integral body as well as work separately and independently.

The invention relates to a parallelism degree adjustment algorithm for reducing power consumption of an instruction-level parallelism (ILP) processor. The algorithm comprises the steps of analyzing hardware resources and parallelism degree demand quantity information of parts of an input application program by utilizing a compiler, and obtaining a control flow graph (CFG) and loop hierarchy trees (LHTs) of the application program; dividing the application program: cutting the application program into different regions; setting executive parallelism degrees of the regions according to the hardware resources, the parallelism degree demand quantities and energy efficiency of the regions, so that the parallelism degree can be adjusted and changed according to the demands of executive time in the whole program execution process; and re-scheduling the program by the compiler, scheduling the regions by using the set parallelism degrees, inserting a power gating instruction before the regions are executed, and turning off idle hardware resources to reduce electric leakage power consumption. According to the algorithm, the influence of electric leakage power consumption on working performance of the processor can be reduced and the utilization rate of the hardware resources in the ILP processor can be increased.

The invention discloses a circuit for reducing leakage current of an SRAM (Static Random Access Memory) storage array and a control method. The circuit comprises a storage array power supply voltage control module, a storage array ground terminal voltage control module and the storage array; the voltage of the power supply end and the voltage of the ground end of the storage array are controlled through the storage array power supply voltage control module and the storage array ground end control module, and the actual data holding voltage of the storage unit can be reduced, so that the electric leakage power consumption of the SRAM in a data holding state is reduced. The function of adjusting the data maintaining voltage value of the storage unit is realized by controlling different adjusting signals so as to meet different design requirements. According to the invention, the leakage current of the storage array of the SRAM in the number holding state can be effectively reduced, and in a storage system realized by the SRAM, a low-power-consumption scheme that the necessary SRAM holds data with low electric leakage overhead and the rest SRAMs completely turn off a power supply canbe realized.

The invention discloses a method, device and system for correcting establishment time violation, and the method comprises the steps: sequentially replacing logic devices with replacement logic devicesaccording to delay power consumption weight ratios in a descending order when the logic devices on an establishment time violation path are replaced; and updating the path margin to the sum of the path margin and the delay reduction amount of the replaced logic device after each replacement until the updated path margin is greater than 0 or all logic devices are replaced. Visibly, on the basis ofthe technology of replacing the logic devices of the same type, the power consumption of replacing the logic devices is also considered, and the larger the delay power consumption weight ratio is, the larger the delay gain obtained after the logic devices are replaced is, so that the increased electric leakage power consumption is less; visibly the device replacement is carried out according to the descending order of the delay power consumption weight ratios, so that the increase of the leakage power consumption can be reduced on the basis of short correction and establishment time, and theefficiency of violation of the correction and establishment time is improved.