TW535429B - Out of range image displaying device and method of monitor - Google Patents

Abstract

An image displaying device and method of a monitor is provided, which is capable of providing a normal display, even when the resolution of input image signals exceeds the resolution supported in the monitor. The displaying device includes an A/D converter for converting analog image signals into digital image signals composed of even pixels, odd pixels and even/odd pixels in accordance with a sampling clock set by a control signal; a delayer for delaying a horizontal synchronizing signal for predetermined time; a switch for selecting one of the horizontal synchronizing signal delayed for the predetermined time by the delayer and a normal horizontal synchronizing signal to generate the sampling clock of the A/D converter in accordance with a switching signal; memory for temporarily storing the digital image signals in a frame unit; a video scaler for storing the even and odd pixels digital image signals outputted from the A/D converter in the memory to thereby build one frame and transmitting the stored output to match with a signal input timing of a display module; and a microcomputer to output a switching signal to switch the switch in synchronism with the vertical synchronizing signal, if the resolution of the input image is over the resolution supported in the monitor, and at the same time output a control signal to set the sampling clock of the A/D converter to half a normal sampling clock.

Description

535429 V. Description of the invention (1) [Scope of the invention] The present invention relates to a display, and more particularly, to a display device and a method for the display that exceed the display range. [Background of the Invention] A typical display can perform a series of single operation processes, such as digital sampling, scaling, etc., and can transmit a pre-programmed (frommat) image signal from a switch. , The display test finally displays the processed image signal on the screen.

Under the current development of large display devices, circuit technology is used. Relative 'displays have evolved from a small display to the use of a cathode ray tube and then to a digital system using a liquid crystal display (LCD), just like a typical flat display device. (Flat display device) to meet large displays. The display of the display image is determined by its resolution, which is divided into SVGA (800x600), XGA (1024x768), and SXGA (1280xl024).

As shown in the first figure, in the related art, an image-making device of a display includes: an A / D converter (1), which converts analog R, G, and B image signals The analog R, G, and B video signals are transmitted from the video card to the 8-bit digital R, G, and B video signals according to a predetermined sampling rate meter, and are synchronized with the horizontal synchronization signal H-sync. The H-synchronization is controlled by the control signal of the microcomputer (4); a buffer (2), which temporarily stores the digital r, G, and B image signals in a daytime unit, and An image converter (3) converts the digital R, G, and B image signals from the A / D converter (1) to a signal in the unit of day and day, and displays it on the LCD unit (LCD

Page 5 535429 V. Description of Invention (4) State. Still another object of the present invention is to provide a device and method for displaying image data ', wherein a display having a first format has a second format. ^ ^ In order to achieve this purpose and other benefits in whole or in part, the present invention provides a display of a display device beyond the imaging range, including an A / D converter which converts the analog Image signal to digital image signal, the signal is composed of dual image points, single image points, and dual / single image points according to the sampling speed set by the control signal; a delay =, the delay m predetermined time delay-horizontal synchronization signal; A Kaihe switch can choose the level delayed by the delayer at a predetermined time. It is the same as the general horizontal synchronization signal. Among them, 奸 奸; Ψ Λ / η 丝 μ 1 mouth view according to a conversion letter narrow image ΪΪΪ f: picture unit ( In frame frame; 1 change cry f ::;: change the A / D used by the foreigner to store in the memory. 2: the dual image point and single image point digital image signals of the second one are transferred to the surface, and The stored signal output is matched with a single input timing display (display module); and a micro, 1Splay output switching signal (Straight): Microcomputer input switch. Straight forward step package number conversion at the same time In order to benefit all or part of the present invention, the present invention also provides a display method that achieves some objectives and effects, including determining the image quality. Whether the resolution of the display exceeds the range of the display; if: ~ the resolution of the image signal, and the input image signal 535429 V. Description of the invention (5) The resolution exceeds the input before the display; 'It should be entered, and it can't be shown that in order to further improve the image display device's late circuit, the switch of the format (image) of the digital image, the extension, the switch can horizontally synchronize the signal output at least for the first time. The image signal in each image image signal is the image. Before it can be achieved, it can include the image change signal to the image signal delaying circuit to turn one of them and the second before it can be achieved. The invention includes a dual image point or image signal in the display input video signal sampling speed meter. Sampling the image signal on the day-to-day horizon ° In order for Guiz to vertically synchronize each double image at a single image point with the following resolution, after the vertical synchronization signal is input, the double image point or A single image point is taken, and the dual image point and the single image point are established before or after the vertical synchronization signal is input: All or part of the purpose of the present invention,? / D converter, an image point switch, delay z = The A / D converter converts the image signal of the first arrangement = 7 arrangement, and the image point is turned into a plurality of first image points and a plurality of second predetermined cycle time delays. And the delayed signal, the image converter creates a picture from the image signal in the image point switch image point. For all or part of the purposes of the present invention, the method for displaying an image includes determining whether the external resolution exceeds the resolution of the display, and ^ sampling the image signal before or after the vertical synchronization signal is input, using at least Each picture is created by shadow points or single image points, before or after the signal is input, and the display system is two. Be aware of the purpose, characteristics and effects of the present invention, only examples, and the accompanying drawings to the present invention do

535429 V. Description of the invention (7) '---- Double image output to each path — go to > U early image point 8-bit digital R, G, B image k number, in day buffer (The frame buffe checks and then converts the image into a 5 | (16) value, and 矣 仏 士丹 Trn) to communicate the stored image signal and compare it with the signal input timing of an LCD early tg (LCD module). :: Electricity: (17) Recognize the resolution of the input image (the horizontal and vertical synchronization signals output by resiuiu), and if the resolution set in the display is input, output the control signal ^ Ϊ 开关 switch 03) And at the same time, it has a vertical synchronization signal image point switch () and outputs a control signal to set the sampling speed meter of the A / D converter (丨 丨) to half of the general sampling speed meter. Under the described structure, a method for displaying an image beyond the image range according to a preferred embodiment of the present invention will also be described. First, please see the third figure. If the analog R, G, β image signals and the horizontal and vertical synchronization numbers are input from the video card, the microcomputer (7) recognizes the resolution of the input image signal, that is, uses horizontal / vertical SVGA, XGA or SXGA of the synchronization signal (stage 31). Then, the microcomputer (17) determines whether the resolution of the input image signal is higher than the resolution set in the display (stage 32). If the resolution of the input image signal is determined The resolution is higher than the resolution set in the display. For example, if the resolution of the display is XGA (1024x768) and its output image signal is SXGA (128〇x104), the microcomputer (17) outputs the control signal to The A / D converter (11) sets the sampling speed meter to half of the general sampling speed meter of 135 megahertz to convert "(; A image to digital signal, that is, to a speed meter of 6 7 · 5 megahertz (stage

535429 V. Description of the invention (8) 33) 〇 Furthermore, the A / D converter (11) extracts the dual image points in the turn-in image according to a speedometer of 67.5 megahertz to establish the first day surface, according to The 57.5-mhz speedometer is in an original state at the same time as the horizontal synchronization signal, as indicated by the state (a) in the fourth figure, and converts the input image signal to 8-bit digits R ', G', and B. Image signal. If a vertical synchronization signal is input, the A / D converter (11) starts to extract a single image point of the input image based on a sampling speed meter of 6 7 · 5 megahertz to establish a second celestial surface. At a fixed time, as shown in the fourth figure, and the input image signal is converted to the 8-bit digital R, G, B image # number (stage 3 4), at the same time, if the input image signal to create the first picture, the The microcomputer (1 7) controls the switch (1 3) at the output of the conversion signal, and inputs a horizontal synchronization signal to the conversion (11) in the original state. … If the vertical synchronization signal is input and the input of the shadow of the second day is established, the microcomputer (17) controls the output of the converted signal ^ OFF ^ (13) and inputs the A / D converter (11), which is delayed The horizontal synchronization signal delayed in the processor (12) is delayed by a specified time to extract a single image point, for example, a horizontal period measured at a sampling speed of 67.5 million hertz. The image point switch (1 4) and the switch (1 3) transfer the image point switch (14) according to the same conversion signal to transmit R ', G, and B, the image signal and R'g ", b "~ L The path of each image signal is converted to the image conversion (6). The point storage 3 image calculator (6) is matched with the picture buffer (15); the two images are stored in the volume R ', G', B, the video signal,

Page 12 535429 V. Description of the invention (9) == Point in the memory image is displayed "^ a unit of image relative to the first written ^ disrespectful image 'only the image of the sampling of the double image points Relative to: Image: combine two paintings ^, and only show a single picture for this single image .;-once the image of the face creates a picture, because the two daytime faces are too

The surface of the day, but-the synthesis of the general display process is established-a person often appears on the screen caused by the afterglow effect of the LCD display, showing the state. ”Phenomenon, so that the display is a general display cry, if the resolution of the input image signal is lower than the resolution of 3 XGA ί γ W, for example, if the analysis of the input image signal is GA (l024x768) ), The input generated by the A / D converter (11) relative to the resolution {the sampling speed meter with a frequency of 95 megahertz, and the input image is converted to an 8-bit digital image signal (stage S30.), So The microcomputer (1 7) is set according to the control signal of the A / D converter (11)

The sampling speed is measured to 95 megahertz, and the switch is controlled according to the output of the switching signal (1 3). Regardless of the vertical synchronization signal input, the horizontal synchronization signal is therefore input to the A / D converter (11) in the original state. . In the end, each picture is established by sampling a digital image picture signal through a series of instructions and display through the LCD module.

Page 13 535429 V. Description of the Invention (ίο) (S37). From the foregoing, it can be clearly seen that, according to the present invention, a display device and its display method beyond the image range can achieve general display, even if the resolution of the input image signal exceeds that set in the display used in the present invention. Resolution to eliminate the problem that the display will be replaced and improve the reliability of the product by the user. ° The foregoing specific embodiments of the present invention are only one of the examples, which can limit the scope of the patent of the present invention, and the patent of the present invention can also be implemented.

There are many changes that can be made to the scope, which can be substituted: where the present invention is described or patented. The 4 effect structure change 'should be included in the patent scope of the present invention.

Page 14 535429 Brief description of the drawings [Illustration of the drawings] The first diagram is the configuration of the display process device in the related art. The second diagram is the transcendent display shown in the preferred embodiment of the present invention. The block diagram of the configuration of the image display device is shown in the figure. The fourth figure is the timing of the horizontal synchronization signal wave opening v (waveforms of the horizontal synchronizing) and the sampling clock (sampling clock) in the preferred embodiment of the present invention. Illustration. The third diagram is a flowchart of a method for displaying this image on a display beyond the display in the preferred embodiment of the present invention; and

[Illustration of drawing number] A / D conversion || (A / D converter) (l) Buffer H (buffer) (2) Video scaler (3) Microcomputer (mi crocompu t er) (4) A / A / D converter (ll) delay circuit (12) switch (sw i tch) (13)

Image point switch (1 4) frame buffer (15) video scaler (16) control circuit (17)

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Claims (1)

535429 6. Scope of patent application 1. An image display device, including: An A / D converter, which is used to enter the image signal of the second arrangement; The image point switch distinguishes a first image point and a plurality of second images into a plurality of delay circuits, such as a delay circuit, the delay circuit uses a predetermined synchronization signal; The switch can be based on one turn and one of the delayed horizontal synchronizing signals-letter ^: choose the horizontal synchronizing signal, a shirt image changer, the image converter ^ the first of the image signal and 你 -M you like the output of the 2 switch Digital shadows. & brother-at least one mapping point to create a picture 2 · According to the patent application, the delay time described in @t i described in the seventh paragraph = the image display is split, which is expected. iuA / D converter's sampling speed meter, one half of the week 3 image points, Guanshen lost monthly output of the second car ^ Wai / 1 place ^ image display device, which is broken from the A / D conversion ~ cry Once in the image, there is an image point, and the path to the parent image converter is not correct. According to the application, the image display device described in item 3 of the patent scope, wherein the path of the phase ί :::: ί: is to output the double image point and single image point input U of the second picture. : Double-image point input terminal for single-point input and single-image shot @ 士 轮 入 端 的 Lu livestock. 5. According to the image display device described in item 3 of the scope of patent application, 535429 6. Scope of patent application The operation of the switch is based on the same control signal of the aforementioned switch. 6. According to the image display described in item 丨 of the scope of patent application ^ a control circuit, if the resolution of the I image is input $ ^ κ a 及 and the resolution of the macro in the display, the control circuit outputs a conversion The signal converts the signal simultaneously with a vertical signal, and simultaneously outputs a 4-signal signal to set the sampling speed meter of the tiger to half of the general sampling speed meter. X to 7 · According to the image display device described in item 1 of the scope of the patent application, most of the first image points include the images of the dual image points of the second screen ^ The second and the first image points include Single-point video signal of the second frame. ′ 8 The image display device according to item 1 of the scope of patent application, wherein the A / D converter converts the image signal according to a sampling speed meter set by a control signal sent from a control circuit. 9. The image display device according to item 1 of the scope of the patent application, wherein the first day surface is analogous and the second day surface is digital. 1 〇—A method for displaying an image on a display, including: determining whether the resolution of an external input image signal is higher than the display; setting a sampling speed meter; for each image input before and after the vertical synchronization signal is input The signal is sampled with double or single image points; and at least one of the double and single image points sampled in the input video signal before and after the vertical synchronization signal is input to create each picture and display the picture. 11. The method according to item i 0 in the scope of patent application, wherein the sampling step 535429 6. The scope of patent application still includes: sampling the dual image points in the input image before the vertical synchronization signal is input; and the vertical synchronization signal Samples a single image point in the input image after the turn. 12. According to the method described in Item 10 of the scope of the patent application, wherein the sampling step further includes: sampling a single image point in the input image before the vertical synchronization signal is input; and sampling the input image in the input image after the vertical synchronization signal is input. Dual image point sampling. 13. The method according to item 10 of the scope of the patent application, wherein the setting step of the sampling speed meter comprises setting the sampling speed meter to ^ half of a general sampling speed meter to sample the entire image. 1 4 · According to the method described in Item 10 of the scope of the patent application, wherein the package is still converted = the resolution samples the input image at a sampling speed meter, and the sampled image is used in the 4 order of / string The signal shows the book, while every day is created. One Page 18