39 results about "Scale transition" patented technology

An object of at least one embodiment of the present invention is to provide a liquid crystal display device and a driving method thereof, in which a contour of an image is clearly recognized during movie display even in a case where a backlight is turned on and off so as to change intervals at which the backlight turns on. In at least one embodiment, the liquid crystal display device includes a liquid crystal panel and the backlight that irradiates the liquid crystal panel with light, one frame period including a turn-on period during which the backlight turns on and a turn-off period during which the backlight turns off, luminance being changed by changing turn-on intervals of the backlight, the turn-on intervals of the backlight being changed by changing lengths of the turn-on period and the turn-off period. The liquid crystal display device further includes an OS process circuit for controlling a drive voltage to be applied to the liquid crystal panel by setting an amplitude of the drive voltage to be applied to the liquid crystal panel during a gray scale transition. The OS process circuit sets the amplitude of the drive voltage to be applied to the liquid crystal panel during the gray scale transition so as to be greater as the turn-on period of the backlight is longer under a condition where gray scales that have not been subjected to a gray scale transition is equal to gray scales that have been subjected to the gray scale transition in a case where the turn-on period of the backlight varies.

The invention relates to an ordinary constant flow source driving chip-based method for controlling grey scale display of a light-emitting diode (LED). In the method, gray scales, which are scattered in two different refreshing periods and only account for a half of output enabling (OE) subfield time, of an image in the same frame period are integrated into one refreshing period and gray scales which are scattered in four different refreshing periods and only account for a quarter of the OE subfield time are integrated into one refreshing period, namely, gray scales, which are scattered in N different refreshing periods and only account for one Nth of the OE subfield time, in the same frame period are integrated into one refreshing period so as to form a complete OE subfield and make full use of the subfield time. Under the control of a specific algorithm in a control system, an ordinary constant flow source driving chip can meet all requirements and achieve the effects of high refreshing rate, high gray scale, high picture quality, high LED utilization ratio and smooth gray scale transition, so that the raw material cost of LED display equipment is saved. Certain performance of the ordinary constant flow source driving chip controlled by the method is even superior to that of a built-in pulse-width modulation constant flow source driving chip.

Disclosed is a liquid crystal display device (1) provided with a backlight part (3) that has a light-emitting diode (light source), and a liquid crystal panel (display part) (2) that includes a plurality of pixels (P) and displays information using illumination light from the backlight part (3). A video generating device (control part) (9) decides, in a frame in which a gray-scale transition occurs, at least a length of either an OFF period of the light-emitting diode in a first half of the frame or an ON period of the light-emitting diode in a latter half of the frame, based on the time information from the time information generating part (26), and outputs an instruction signal to a light source driving part (14) in accordance with the decided OFF or ON period for driving the light-emitting diode.

The invention discloses a transition metal tin compound/graphene composite material which consists of a nano-scale transition metal tin compound and grapheme, wherein a general formula of the transition metal tin compound is MSn2 or M3Sn2, M represents VIII transition metal elements. As the dispersion and loading effects of the grapheme can be uniformly distributed, the stability of the transition metal tin compound in the composite material in the process of charging and discharging can be effectively improved, and the transition metal tin compound/graphene composite material can be used as a cathode material of a lithium ion battery. The invention also discloses a preparation method of the composite material through a one-step hydrothermal method or a one-step solvent thermal method which has the advantages of simple process, low cost, short cycle, low energy consumption and the like.

The invention discloses a gray scale transition adjusting method and apparatus. The method comprises: a brightness value of an adjustable gray scale on a display screen is adjusted to a preset gamma curve corresponding to the adjustable gray scale; full-gray-scale scanning is carried out on the display screen; whether the number of times of the full-gray-scale scanning exceeds the preset number of times is determined; if not, whether an abnormal gray scale exits is determined; if so, a high-grade adjustable gray scale closest to the abnormal gray scale and/or a low-grade adjustable gray scale closest to the abnormal gray scale are/or adjusted automatically and then full-gray-scale scanning is carried out on the display screen again until the abnormal gray scale is adjusted to a normal gray scale. According to the invention, a problem of non-uniform gray scale transition of the display screen can be solved and thus the gray scale transition of the display screen becomes smooth, thereby improving the screen displaying effect.

The invention discloses a truck scale transition device for a highway overload control system and an installation method of the device. The truck scale transition device comprises a guide plate I, a guide plate II and a truck scale body positioned therebetween, a connecting plate I and a connecting plate II are arranged on two sides of the truck scale body respectively, and the scale body is fixedly installed on a mobile base. When the truck scale transition device used by the highway overload control system is dismounted, it is only required to dismount the scale body on the mobile base, a truck scale used by the highway overload control system can be repeatedly used; and the surface of the scale body is provided with a square notch, a transition plate is erected in the square notch through a spring I and a spring II, and the transition plate is made to incline to a certain degree in the vehicle driving direction during weighing, so that a weighed vehicle bears certain resistance whendriving on the truck scale, and is decelerated, further the vehicle is buffered and transitioned on the truck scale, the weighing position of the vehicle on the truck scale is accurately controlled,and the weighing precision of the truck scale is improved.

The invention provides a gray scale transition frame generation method. The gray scale transition frame generation method comprises the steps that the line display effective value or the column display effective value, the maximum gray scale value, the minimum gray scale value and the transition display order number of a display panel are acquired; the line display effective value number of pixel points or the column display effective value number of pixel points of the display panel are evenly divided into the transition display order number of continuous blocks; the transition display order number of gray scale values are selected in turn from the minimum gray scale value to the maximum gray scale value; and the selected gray scale values are respectively filled in the pixel values of the transition display order number of continuous blocks in turn so that a gray scale transition frame is generated. The invention also provides a gray scale transition frame generation device. According to the gray scale transition frame generation method and device, the transition frame of any gray scale can be outputted and thickness of transition stripes is relatively uniform.

The invention discloses a method for adjusting gray-scale transition and color of a display device. By means of a preset database, the gray-scale transition and the color of the display device are adjusted, and a reference is provided for the adjustment process; compared with the manual adjustment method in the prior art, the technical scheme provided by the invention has the advantages that the time required by the adjustment process is greatly shortened and the production efficiency is improved; in addition, when the method is used for adjusting the gray-scale transition and the color of a batch of display devices, the accuracy and the uniformity for the gray-scale transition and the color of the display device are guaranteed, and the display effect of the display device is improved.