39results about How to "Keep resolution" patented technology

The invention discloses a PWM (Pulse Width Modulation) circuit which comprises a PWM counter, a reference value setting register, a frequency multiplier and a comparator, wherein the frequency multiplier is used for increasing the frequency of a clock signal and outputting the frequency to the PWM counter. The invention also discloses an LED drive circuit. By increasing the frequency of the PWM input clock signal by N times through the frequency multiplier, the counting period of the PWM counter is shortened to 1 / N of the original period. In a dynamic LED display screen, the refreshing frequency can be increased by N times, and the original resolution can be maintained.

A system and methodology that facilitates increasing the fill-factor of digital sensor arrays at a reduced cost. In general, fill-factor relates to the active area of the sensor array with respect to the inactive area or space between pixels on the array. By increasing the fill-factor, transmitting maximum amount of optical information to the array while mitigating information loss between pixels on the army is allowed. An image detector system is provided that includes a pixelated sensor array that is responsive to electromagnetic radiation. A coherent scattering medium diffuses the electromagnetic radiation with respect to the pixelated sensor array in order to increase the fill-factor of the array.

A method for driving an OLED panel includes the following steps. An image signal is inputted to a power control unit, wherein the power control unit includes a calculator and a power control look-up table. A display loading ratio is calculated by the calculator according to the image signal, wherein the power control unit can find an emitting time ratio by the power control look-up table corresponding to the display loading ratio, the emitting time ratio can be transformed to an emitting time signal, and the emitting time signal can be inputted to the OLED panel so as to control the power consumption of the OLED panel.

The present invention relates to a driving method of a display panel and a display device. The driving method includes: dividing a pixel into multiple pairs of pixel groups; acquiring a first voltage signal and a second voltage signal corresponding to each sub-pixel that are unequal, and the screen input signal includes The first frame and the second frame of adjacent timing; in the first frame, the first sub-pixel of the first pixel group and the first sub-pixel of the second pixel group are driven by the first voltage signal and the second voltage signal pixel; use the second voltage signal and the first voltage signal of the second sub-pixel of the second pixel group to drive the first pixel group and the second sub-pixel of the second pixel group; in the second picture, use the first sub-pixel of the second pixel group The second voltage signal and the first voltage signal of the pixel drive the first pixel group and the first sub-pixel of the second pixel group; the first pixel is driven by the first voltage signal and the second voltage signal of the second sub-pixel of the first pixel group group and the second subpixel of the second pixel group. Maintaining the resolution can also have a color cast compensation effect.

The invention discloses a method for synchronously monitoring chemical signals and electrical signals of nerve cell networks. Firstly, the nerve cell network is cultivated in situ on a pretreated microelectrode array; then, the neuron vesicles are dyed, and then buffer solution is added ; Observing the nerve cell network with a total internal reflection fluorescence microscope, connecting the shooting camera and the controller of the microelectrode array with the pulse signal generator; performing external stimulation on the nerve cell network, and simultaneously turning on the pulse signal generator, shooting the camera and the microelectrode array The controller collects the fluorescent signal and the electrical signal synchronously, respectively. The synchronous monitoring method of the present invention has low background signal, high signal-to-noise ratio, and has space-time resolution responsiveness, which can meet the monitoring requirements of nerve cell networks; the method has stable signals, high sensitivity, and can realize imaging measurement for various nerve cells and networks, and High-throughput analysis can be achieved.