100 results about "Selective pulse" patented technology

A write driver circuit including a plurality of programmable fuses for a phase change memory device in which a write operation is correctly performed even in the case where a current output shift in a write current generation circuit; or in the case where a phase change memory cell having a phase change property shift due to an external factor or due a process change. The write driver circuit includes a write current control unit for outputting a first or second level of voltage selected, by selecting one of a first or second programmable current path, based on whether a first or second selection pulse signal is applied; and a current driving unit for generating a write current controlled by the output voltage of the write current control unit. Each of the first and second programmable current paths includes fuses that can be programmed to adjust their resistance to adjust the respective selected output voltage to compensate for the current output shift in the write current generation circuit or for the phase change memory cell having the phase change property shift.

A display device enabling a superimpose display in which an image is superimposed on a background image with low power consumption is provided. By providing a switch at an input terminal of each stage of a scanning circuit which has a plurality of stages for outputting a sampling pulse or a row selection pulse, and by selecting whether or not to permit an input of a start pulse or each output pulse of a prior stage by the switch, it becomes possible to input a start pulse to an arbitrary mid-stage and output a sampling pulse or a row selection pulse from the stage. Accordingly, the pulse is outputted only to a region where a video signal needs to be updated in a display screen, and a row and a column are selected, thus a new video signal is written thereto.

A method for storage cell design evaluation provides accurate information about state changes in static storage cells. A wordline select pulse is propagated along the wordline select path of the test row to an output driver circuit, in order to test the clock and / or address timing of the row, so that variation of access timing, read stability and writeability with wordline strength / access voltage can be determined. An access detection cell holds the input of the output driver circuit until a simulated access operation activated by the wordline select pulse is complete. Multiple test rows may be cascaded among columns to provide a long delay line or ring oscillator for improved measurement resolution.

An active matrix LCD defines a display signal period and a reset period in each vertical scan period. The display signal period is a period to write and hold display signals in pixels in response to a row select pulse generated from an output pulse of a first shift register (SR1). The reset period is a period to write and hold a reset voltage in the pixels in response to a row select pulse generated from an output pulse of a second shift register (SR2). The ratio of the display signal period to the reset period is adjustable in units of horizontal scan time by changing the number “n” of horizontal scan periods to be passed between the time when the first shift register receives a scan start signal (WT) and the time when the second shift register receives a scan start signal (Reset).

In one aspect of the invention there is disclosed a multicolor thermal imaging system wherein different heating elements on a thermal print head can print on different color-forming layers of a multicolor thermal imaging member in a single pass. The line-printing time is divided into portions, each of which is divided into a plurality of subintervals. All of the pulses within the portions have the same energy. In one embodiment, every pulse has the same amplitude and duration. Different colors are selected for printing during the different portions by varying the fraction of subintervals that contain pulses. This technique allows multiple colors to be printed using a thermal print head with a single strobe signal line. Pulsing patterns may be chosen to reduce the coincidence of pulses provided to multiple print head elements, thereby reducing the peak power requirements of the print head.

A touch panel, a display panel, and a display unit achieving prevention of erroneous detection caused by external noise, are provided. The touch panel includes: a plurality of detection scan electrodes extending in a first direction; and a plurality of detection electrodes facing the plurality of detection scan electrodes and extending in a second direction which intersects the first direction. A ratio of fringe capacitance to total capacitance between one or more selected detection scan electrodes and a first detection electrode is different from a ratio of fringe capacitance to total capacitance between the one or more selected detection scan electrodes and a second detection electrode. The one or more selected detection scan electrodes are selected, in a desired unit, from the plurality of detection scan electrodes, to be supplied with a selection pulse, and each of the first and the second detection electrodes is selected from the plurality of detection electrodes.

Translocation control for sensing by a nanopore, as well as methods and products related to the same, are provided. Such methods optimize duplex stability to provide high fill rate (of the hybridization sites) but do not prevent rapid dissociation required for high read rates, as well as controlling the translocation of a target molecule for sensing by a nanopore by use of a selective pulsed voltage. Products related to the same include a reporter construct comprising two or more phosphoramidites.

The invention discloses a welding-distance height control device and a welding-distance height control method. The device can accurately control the distance between a nozzle of a welding torch and a workpiece, namely the welding-distance height, and belongs to the technical field of welding. The method directly measures the distance between a laser sensor and the workpiece through a laser ranging device. The actual distance is transferred into a PLC control unit after the AD conversion; and after the processing of the PLC, the PLC can automatically select pulse frequency according to the preset speed and the difference between the welding-distance height and the preset height at the moment and output a pulse signal and a rotating direction signal to an alternating motor for servo. The alternating current motor can drive the welding torch to move back and forth, and the distance between the welding torch and the workpiece is adjusted to ensure that the distance is consistent with the preset distance. The proposal is applicable to the piercing welding, has higher control accuracy, a simple structure, and steady effect, and is superior to the prior arc voltage feedback to control the length of an electric arc.

A method for frequency- and time-selective interference suppression for a communication system based on OFDM, and a receiver therefor. To achieve a much lower bit error rate at the output of the receiver or to permit greater interference or a lower signal-to-noise ratio (in a prior art L-DACS1 receiver, at least 45 nautical miles) for the same transmission power, the invention provides: a filter bank pulse blanking method FBPB in which the sampled received signal is applied to a blanking unit for frequency-selective pulse blanking, which blanking unit consists of an analysis filter bank having M sub-bands; a module for frequency-selective pulse blanking of the sub-band signals; and a synthesis filter bank, which reassembles the signal. The analysis filter bank, which breaks down the received signal into multiple sub-bands on a frequency-selective basis, is used before OFDM windowing, such that the sub-band breakdown applies pulse blanking on a sub-band-selective basis.

A system and method are provided for imaging multiple substances, such as contrast agents and metabolites in vivo, with selective excitation frequencies. A first substance is excited with a frequency selective pulse, then a second substance is excited with another frequency selective pulse. The signals resulting from these pulses are acquired in an order reversed from the order in which the pulses were applied. In some embodiments, more than two substances may be imaged. The system and method thus provide for quick and efficient utilization of the magnetization of multiple substances for spectral-spatial imaging.

Disclosed herewith is a matrix driving method of liquid crystal which exhibits a cholesteric phase. In the method, there is a selection pulse application step of applying pulses to select the final state of the liquid crystal, and between the selection pulse application step of a scanning line and the selection pulse application step of the next scanned scanning line, a delay step is inserted. During the delay step, a signal pulse is of 0V or of a pulse voltage for a display of a specified density.

Bit and write decode / drivers, a random access memory (RAM) including the decode / drivers and an IC with a static RAM (SRAM) including the decode / drivers. The decode / drivers are clocked by a local clock and each produce access pulses wider than corresponding clock pulses. The bit decode / driver produces bit select pulses that are wider than a word select pulse and the write decode / driver produces write pulses that are wider than the bit select pulses for stable self timed RAM write accesses.

A column select and databus precharge signal interlock scheme for a DRAM memory. The signal interlock system includes column read enable circuits associated with each bank of a DRAM memory for generating column select signals for coupling data to a common read databus, and a read databus precharge disable signal for disabling read databus precharge devices. Each column read enable circuit includes pulse generator circuits with tunable components for generating at least one column select signal pulse and the read databus precharge disable pulse in a read operation. The pulse generator circuits ensure that the column select pulse is always nested with respect to the read databus precharge disable pulse. Therefore, there is no overlap between active column select devices and active read databus precharge devices.

Systems and methods for generating pulse clocks with programmable edges and pulse widths configured for varying requirements of different memory access operations. A pulse clock generation circuit includes a selective delay logic to provide a programmable rising edge delay of the pulse clock, a selective pulse width widening logic to provide a programmable pulse width of the pulse clock, and a built-in level shifter for shifting a voltage level of the pulse clock. A rising edge delay for a read operation is programmed to correspond to an expected read array access delay, and the pulse width for a write operation is programmed to be wider than the pulse width for a read operation.

In one aspect of the invention there is disclosed a multicolor thermal imaging system wherein different heating elements on a thermal print head can print on different color-forming layers of a multicolor thermal imaging member in a single pass. The line-printing time is divided into portions, each of which is divided into a plurality of subintervals. All of the pulses within the portions have the same energy. In one embodiment, every pulse has the same amplitude and duration. Different colors are selected for printing during the different portions by varying the fraction of subintervals that contain pulses. This technique allows multiple colors to be printed using a thermal print head with a single strobe signal line. Pulsing patterns may be chosen to reduce the coincidence of pulses provided to multiple print head elements, thereby reducing the peak power requirements of the print head.

A photo sensor, a method of operating the photo sensor, and a non-transitory computer readable medium are disclosed. A photoelectric sensor uses a selective pulse detection technique and associated synchronization techniques to improve the quality of pulse detection, the operating range of the sensor, and the sensor's immunity to noise. These improvements also yield faster sensor response times and reduce the design cycle time. A modulated light beam emitted by the sensor's emitter comprises multiple pulse periods, with a pulse being transmitted within each period. The pulses are positioned within their respective periods at a defined offset time relative to the start of the periods, where the offset time can vary between periods according to a defined pattern. The receiver can selectivelysample the signal based on synchronization information to determine whether the received signal contains the emitted pulse pattern. Through-beam sensor embodiments can generate the synchronization information internally based on an analysis of the analog signal corresponding to the modulated signal.