1756results about How to "Increase working frequency" patented technology

A system and integrated circuit chips used in the system utilize a bus in the form of a ring to interconnect nodes of individual components for transfer of data and commands therebetween. An example system described is a memory having one or more re-programmable non-volatile memory cell arrays connected to each other and to a system controller by a ring bus.

The preferred embodiment of the present invention provides a write head having an interlaced conductor coil winding and method of fabrication. The interlaced winding of the present invention may have alternating turns of a first and a second coil. In the preferred embodiment, the side walls of successive coil turns are separated by an ultra thin inorganic insulation which defines the distance between successive turns of the first and second coil. In one method of fabrication, a conductive seed layer is deposited on a generally planar insulative surface, a resist mask is formed on the seed layer, and a conductive material deposited on the exposed seed layer to form the turns of the first coil. The masked portions of the seed layer are removed, after resist mask removal, to electrically isolate the turns of the first coil. The inorganic insulation may be formed in a layer conformal with the first coil. The second coil is formed between the turns of the first coil. A seed layer and mask may be used to facilitate second coil deposition. Etching, or planarization, may be used to electrically isolate the turns of the second coil. A capping layer may be formed over any exposed conductor material to insulate the winding from an upper pole structure or other overlying structure. Embodiments of the present invention may have multiple layers of conductor winding having some conventional, or all interlaced coil structure.

Data line loading on high density modules with multiple DRAMs is minimized permitting the maximum memory density of systems of otherwise limited density to be increased without an ensuing performance degradation due to data line capacitive loading. First the single or dual in-line memory module (SIMM or DIMM) includes in-line bus switches. The bus switches are between the SIMM or DIMM module tabs (system) and random access memory devices (RAM) and are either in a high impedance (off) or active state depending on the READ/WRITE state of the RAM. When in the high impedance state, the effective loading of the module is that of the bit switch device. The logic for determining the READ/WRITE state may be embedded in an application specific integrated circuit (ASIC) that monitors bus activity and controls activation of the bus switches, be provided by a memory controller or, generated by the RAM itself. The bus switches are active when the RAM is performing a read or a write and inactive otherwise. The RAM is Fast Page Mode (FPM) and Extended Data Output (EDO) or Synchronous DRAM (SDRAM).

Flash ROMs operate at a speed slower than that of a CPU. In order to raise the operating speed of a single-chip microcomputer, therefore, interleaving is adopted and a plurality of flash ROMs are operated alternately to obtain an apparent operating speed equivalent to that of a CPU. Read clock generating circuits are placed in close proximity to clock input pins of respective ones of the flash ROMs and supply the flash ROMs with read clocks obtained by dividing down the frequency of a system clock. Delay ascribable to wiring is eliminated from the read clocks as a result.

An inventive energy harvesting apparatus may include a ferromagnetic material and/or a shape memory alloys to convert thermal energy to mechanical energy to electrical energy. The apparatus is subjected to a thermal gradient to cause beams to bend thus creating stress/strain in a piezoelectric material, or creating magnetic flux in a magnetic path. The charges created in this process can be transferred to electrical batteries.

An object of the present invention is to provide a method for manufacturing a semiconductor device of which manufacturing process is simplified by improving usage rate of a material. A method for manufacturing a semiconductor device of the invention comprises the steps of: forming gate electrodes with a droplet discharge method on a substrate having an insulating surface; laminating gate insulating layers, semiconductor layers, and a semiconductor layer containing one-conductivity type impurity over the gate electrodes; forming first conductive layers serving as masks with a droplet discharge method in a position overlapping the gate electrodes, etching the semiconductor layer and the semiconductor layer containing one-conductivity type impurity with the first conductive layers, forming a second conductive layer serving as a source wiring or a drain wiring with a droplet discharge method over the first conductive layers; and etching the first conductive layers and the semiconductor layer containing one-conductivity type impurity, using the second conductive layers as masks.

In one embodiment of the present invention, a driving method of a liquid crystal display device is disclosed. According to one embodiment of the present invention a driving method of an active matrix display device is disclosed including: a plurality of source lines; a plurality of gate lines that intersect the source lines; and a plurality of pixel formation sections being disposed in a matrix manner at the respective intersections of the source lines and the gate lines, each of the pixel formation sections receiving as a pixel value a voltage applied to the source line that passes through the corresponding intersection when the gate line that passes through the corresponding intersection is selected, wherein non-image signals are applied to the source lines in each horizontal scanning period, and the gate lines are selected in an effective scanning period, and thereafter the gate lines are selected, in sync with a timing of application of the non-image signals to the source lines, before the subsequent effective scanning period comes after a point in time when the gate lines have been brought into non-selected state.

The transmission delay time of a receiver for receiving a differential signal is reduced. A first amplifier circuit is provided in an input stage of the receiver, and a second amplifier circuit is provided in an output stage of the receiver. The first amplifier circuit is a differential input, differential output amplifier circuit. The second amplifier circuit is a differential input, single-ended output amplifier circuit. A first power supply voltage and a second power supply voltage are input as a high-level power supply voltage and a low-level power supply voltage to the first amplifier circuit and the second amplifier circuit, respectively. The withstand voltage of transistors of a differential pair of the first amplifier circuit is higher than the withstand voltage of another transistor included in the first amplifier circuit and a transistor included in the second amplifier circuit.

The invention discloses an all digital frequency converting method and a device thereof, being easily realized for hardware. The method and the device are essentially used for sample rate convertion of rational number-times of baseband signals and the convertion of the baseband signals and the intermediate frequency signals in digital communication. Under the coordination of control signals and enabling signals, the convertion of signal sample rate can be finished and the convertion of the baseband signals and the intermediate signals can be finished through the reasonable matching of variable integral number-times wave filtering and fraction-times interpolation. The system of the invention essentially comprises a frequency mixer, a cascade connection integral comb filter, a fraction-time interpolating device, a half-band filter, a signal shaping filter, a power detection module and a control interface. The configurable hardware implemented structure of the invention is applicable to a plurality of modulation methods, has the advantages of low resource consumption and good portability, and is used for various wireless communication systems such as multilevel phase shift keying (MPSK), orthogonal frequency division multiplex (OFDM), direct sequence spread spectrum (DSSS) and continuous phase modulation (CPM), etc.

A pump having an undulating diaphragm mounted for undulating between two end plates under drive from at least one electromagnetic actuator in order to transfer a fluid between an inlet of the pump and an outlet of the pump. The pump includes adapter means connecting the diaphragm support to a movable portion of the actuator in order to shorten the stroke of the movable mass of the actuator such that its stroke is shorter than the stroke of the diaphragm support.

A highly compact inductor formed on opposite faces of a dielectric substrate. Sets of parallel spaced conductive traces formed on the opposite faces of the substrate are interconnected by metallized vias through the substrate, in such a way as to form a continuous spiral conductive path. The inductor is preferably formed as two closely adjacent segments, each with conductive traces on each face of the substrate and each having metallized vias interconnecting the conductive traces. The segments are electrically connected in series and produce a magnetic field that extends through each segment in opposite directions and is closely coupled from one segment to the other. The inductor is, therefore, electromagnetically similar to a wire-wound toroidal inductor, providing high inductance and contourable Q values, but is highly compact, especially in the z-axis direction normal to the substrate.

The embodiment of the invention discloses a control method for a central processing unit and terminal equipment, which are applied to the technical field of mobile communications. The method in the embodiment of the invention comprises the following steps of monitoring the frame rate of a currently-running application program in the terminal equipment; judging whether the frame rate of the currently-running application program is smaller than a first preset threshold or not; if the frame rate of the currently-running application program is smaller than the first preset threshold, improving the number of running kernels of the central processing unit and/or the working frequency of the kernels of the central processing unit. According to the embodiment of the invention, the power consumption of a CPU (Central Processing Unit) and the limitation of performance optimization are reduced.

A temperature sensor in a microprocessor monitors its operating temperature Operating point data includes a first temperature being the maximum temperature at which the microprocessor will reliably operate at a first frequency and first voltage, the first frequency being the maximum frequency at which the microprocessor will reliably operate at the first temperature and the first voltage. Operating point data also includes a second temperature at which the microprocessor will reliably operate at a second frequency and a second voltage, the second frequency being greater than the first frequency and the second temperature less than the first temperature. A control circuit causes the microprocessor to operate at the second voltage and frequency rather than the first voltage and frequency in response to detecting that while operating at the first voltage and the first frequency the operating temperature dropped below the second temperature.

A compact multi-band hybrid ring (rat-race) coupler utilizing a ring of composite right-handed and left-handed (CRLH) transmission lines (TLs) and multiple ports, provides miniaturization and the ability to operate at arbitrary frequency bands unlike conventional couplers. The hybrid ring is made compact, such as by constraining phase delay contributions |φ₁|, |φ₂|≦270°. The coupler can be used in many applications, for example as a mode decoupling network in a dual-band front-end MIMO system. The inclusion of a CRLH delay line is also described which alters the phase relationship of the signals and is particularly well suited for extending pattern diversity in response to frequency.

The embodiment provided herein are directed to a pyroelectric (PE) energy converter which is capable of combining nanoscale thermal radiation and pyroelectric energy conversion for harvesting low grade waste heat. The converter advantageously makes use of the enhanced radiative heat transfer across a nanosize gap to achieve high operating frequencies or large temperature oscillations in a composite PE plate. The PE energy converter generally comprises a hot source, a cold source, and a PE plate, wherein the PE plate oscillates between the hot and cold source and the PE plate can be subjected to a power cycle in the displacement-electric field diagram. The hot and cold sources of the converter can be coated with SiO₂ absorbing layer to further enhance the radiative heat fluxes. The converter comprising a PE plate made of 60/40 P(VDF-TrFE) operated between 273 K and 388 K experiences a maximum efficiency of 0.2% and a power density of 0.84 mW/cm². The converter comprising a PE plate made of 0.9PMN-PT composite thin films achieve a higher efficiency and a larger power output namely 1.3% and 6.5 mW/cm², respectively, for a temperature oscillation amplitude of 10 K around 343 K at 5 Hz.