CN1773331A - Display equipment mode changing controlling apparatus and method - Google Patents
Display equipment mode changing controlling apparatus and method Download PDFInfo
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- CN1773331A CN1773331A CNA200410090935XA CN200410090935A CN1773331A CN 1773331 A CN1773331 A CN 1773331A CN A200410090935X A CNA200410090935X A CN A200410090935XA CN 200410090935 A CN200410090935 A CN 200410090935A CN 1773331 A CN1773331 A CN 1773331A
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Abstract
The present invention relates to a control device for converting display equipment mode and its control method. Said control method includes the following several stages: first stage: setting horizontal and/or vertical synchronous signal frequency limit value; second stage: comparing horizontal and/or vertical synchronous signal frequency limit value and inputting image horizontal and/or vertical synchronous signal frequency; and third stage: if the image horizontal and/or vertical synchronous signal frequency is grater than horizontal and/or vertical synchronous signal frequency limit value, the mode conversion can be implemented. Said control equipment includes the following several portions: detection device, user interface, comparison device, microcomputer control device and format conversion device.
Description
Technical field
The present invention relates to display apparatus mode (mode) conversion control method, in more detail, relate to screen display (the on screen display that utilizes display device, hereinafter to be referred as OSD), set user's synchronizing signal boundary value (SYNC tolerance), can realize the display equipment mode changing control device and the control method of image mode conversion thus according to the variation of synchronizing signal.
Background technology
In general, display device carries out a series of processing to the certain format signal of video signal that transmits from the personal computer video card that connects, and then is presented on the picture.And display is just developing into the display of the digital form of nearest use LCD from the display that uses cathode ray tube (CRT).
The image presentation capability of display device shows by sharpness, can be divided into VGA (640 * 480), SVGA (800 * 600), XGA (1024 * 768), SXGA (1280 * 1024) etc.
The electron beam of display device scans picture to the lower end, right side from picture left side upper end, and this repeatedly process is called and refreshes, and the number of times of picture regeneration in per 1 second is called " refresh rate " or vertical frequency.
In addition, but the horizontal frequency that embodies the numerical value of per 1 second horizontal scan circuit number is the key element of decision pattern and vertical frequency.
If vertical frequency is appointed as 60HZ, shake will appear in picture, and consequent afterimage stimulates people's vision, can cause phenomenons such as visual deterioration or headache, and vertical frequency is according to the style of the RAMDAC of graphics card and display device and different.
Display device in the past is same as shown in Figure 1, and its formation comprises: the analog signal processing device 10 of adjusting the analog image signal message of input; With the analog image conversion of signals of above-mentioned analog signal processing device 10 outputs is the analog/digital conversion device 12 of digital image signal and output; To handle and be output as the image processor 14 of the image that is fit to display device 18 through the digital image signal of 12 conversions of analog/digital conversion device and output; After producing the adjustment data of adjusting analog signal processing device 10 and image processor 14, adjust the microcomputer 16 of signal at the necessary image of each end control output.
The control method of display equipment mode changing in the past of identical formation is therewith carried out following explanation.
By the signal of video signal input cable that is connected with the video card of personal computer, the horizontal/vertical synchronization frequency is input to above-mentioned microcomputer 16 in the signal of video signal of input analog signal processing device 10.The situation of paranormal unstable numerical value can appear because of the external factor such as defective of sound card or mainboard in the horizontal/vertical synchronization frequency.
In this case, horizontal/vertical synchronization frequency numerical value that above-mentioned microcomputer 16 is relatively imported and horizontal/vertical synchronization frequency limit value, if horizontal/vertical synchronization frequency numerical value surpasses tolerance band, greater than at that time, the mode conversion control signal will output to analog signal processing device 10 and image processor 14.
Simultaneously, if receive the mode conversion control signal in above-mentioned analog signal processing device 10 and the image processor 14, then begin to carry out the process of mode conversion according to control signal.
With horizontal/vertical synchronization frequency ratio object---horizontal/vertical synchronization frequency limit value is a fixed numbers by the manufacturer of different display devices, and this numerical value is difficult to change.
Import owing to the combined outside on sound card or the mainboard under the situation of unstable horizontal/vertical synchronization frequency, this fixed numbers is carried out the mode conversion process at any time, makes picture shake occur, perhaps in the picture no-output.
With reference to Fig. 2, mode conversion process in the past is elaborated.
Phase one: detect horizontal/vertical synchronization frequency (S10) by the signal of video signal of personal computer image input media input; Subordinate phase: relatively judge the above horizontal/vertical synchronization frequency limit value (S20) that detects; Phase III: according to the judged result of subordinate phase, a certain numerical value is greater than the situation down conversion sharpness (S30) of the horizontal/vertical synchronization frequency limit value of setting in the horizontal/vertical synchronization frequency that detects.
Promptly, for mode conversion process in the past, the horizontal/vertical synchronization frequency numerical value of fixing horizontal/vertical synchronizing frequency boundary value that the manufacturer of more different display devices sets and input signal of video signal, if the setting numerical value that horizontal/vertical synchronization frequency numerical value is set greater than each display device manufacturer can be realized the conversion of display apparatus mode.
Therefore, do not occur whatever in picture, perhaps shake appears in picture, and therefore this image stimulates user's vision, can cause symptoms such as visual deterioration or headache.
Summary of the invention
The present invention is intended to address the above problem, and when the signal of video signal input media input that is connected with the personal computer video card has the signal of video signal of unstable horizontal/vertical synchronization frequency, can prevent to occur continually the phenomenon of mode conversion.
In addition, user's change level/vertical synchronizing frequency boundary value can be adjusted to suitable numerical value, therefore, the signal of video signal of display device is made as the best, can carry out intact image and show.
That is,, be not to use fixing horizontal/vertical synchronization frequency limit value, but, control and whether carry out mode conversion by making the user adjust horizontal/vertical synchronization frequency limit value on the display device OSD for judging whether to carry out mode conversion.
In addition, the signal of video signal of importing with the computer video card is that simulating signal or digital signal are irrelevant, and the user operates the OSD menu simply, even import irregular synchronous frequency signal, and also can stable operation.
For achieving the above object, display equipment mode changing control method according to the present invention can be divided into following two stages: the phase one, by OSD, receive the horizontal/vertical frequency limit value of user's input; Subordinate phase is relatively imported the signal of video signal horizontal/vertical frequency numerical value of display device and the horizontal/vertical frequency limit value of being imported by the user by OSD.
Say in more detail, can be divided into as the next stage phase one: set horizontal/vertical synchronization frequency limit value; Subordinate phase: the horizontal/vertical synchronization frequency numerical value that detects the signal of video signal of input; Phase III: the horizontal/vertical synchronization frequency numerical value of the signal of video signal of more above-mentioned horizontal/vertical synchronization frequency limit value and input; The quadravalence section: the result of Pan Duaning relatively, if the horizontal/vertical synchronization frequency numerical value of signal of video signal is greater than horizontal/vertical synchronization frequency limit value, but the implementation pattern conversion.
Identical with above explanation, in the present invention, the user directly sets horizontal/vertical synchronization frequency limit value by OSD, has changed in the past fixing horizontal/vertical synchronization frequency limit value in the display device.
Simultaneously, with above-mentioned boundary value with from the horizontal/vertical synchronization frequency numerical value of the signal of video signal of personal computer video card input relatively, determine whether carrying out mode conversion, so the user judges whether to carry out mode conversion according to the show state of display device.
In addition,, can prevent frequent changes pattern under the situation of unsettled image synchronizing signal input, can prevent that also the phenomenon that picture image cuts in and out from occurring, and can also solve the injury that float brings to human body according to the present invention.
Description of drawings
Fig. 1 is the formation block diagram of the image signal processor in the display device in the past;
Fig. 2 is the process flow diagram according to the display equipment mode changing control method of conventional art;
Fig. 3 is according to screen display of the present invention (on screen display) picture pie graph;
Fig. 4 is the process flow diagram according to display equipment mode changing control method of the present invention;
Fig. 5 is the pie graph according to display device of the present invention.
* accompanying drawing major part symbol description *
100:H, V Tolerance display
200: digital image signal treating apparatus 210,310: comparer
300: analog image signal processing apparatus 304: prime amplifier
306: analog/digital converter 400: user interface
402:OSD input media 404: microcomputer
406: format converter
Embodiment
Below, with reference to Fig. 3 to Fig. 5, formation and the suitable effect concrete to the present invention are elaborated.
Fig. 3 constitutes synoptic diagram for the OSD that is used to receive by the synchronizing frequency boundary value of user's input according to the present invention.As shown in the figure, have H on the OSD, V Tolerance display 100, but utilize its input level/vertical synchronizing frequency boundary value.
Horizontal/vertical synchronization frequency limit value can have multiple method for expressing, and a kind of is to identify by the ratio number percent to the boundary value of the permission synchronizing frequency of normal synchronizing frequency, also can direct representation be the frequency numerical value of permission.Can be not limited to the restriction that Fig. 3 gives an example, here, the user can be adjusted to desired quantity with the horizontal/vertical synchronization frequency limit value on the OSD by the input of display device keyboard.
Fig. 4 is the process flow diagram according to mode conversion control method of the present invention, and its operational process can be divided into as the next stage, the phase one: set horizontal/vertical synchronization frequency limit value (S100); Subordinate phase: detect horizontal/vertical synchronization frequency (S110) by the signal of video signal of image input media input; Phase III: the horizontal/vertical synchronization frequency limit value (S120) that horizontal/vertical synchronization frequency that comparison detects above and user set; The quadravalence section: the result of Pan Duaning relatively, when horizontal/vertical frequency that the horizontal/vertical synchronization frequency that detects is set greater than the user, but implementation pattern conversion (S130), if identical or less than, stage of (S110) beginning once more repeatedly then.
Display device pie graph according to display equipment mode changing control device and control method is same as shown in Figure 5, with reference to Fig. 5 the present invention concrete formation and action effect is elaborated.
If personal computer by DVI element etc. from the personal computer video card with digital image signal 202 input digit image signal processors 200, digital image signal 202 is input to digital receiver 204.Digital receiver 204 detects the horizontal/vertical synchronization frequency in the input signal of video signal, comparison level in comparer 210/vertical synchronizing frequency numerical value and by OSD input media 402 and the horizontal/vertical synchronization frequency limit value set according to user interface 400 judges whether it is to be fit to the numerical value that image shows.
The result value input microcomputer of below relatively judging 404, microcomputer 404 according to the result value of input microcomputer to format converter 406 outputs with whether carry out the relevant control signal of mode conversion.
On the other hand, if from the personal computer video card analog image signal 302 is input to analog image signal processing apparatus 300 by D-SUB element etc., R, G, B signal carry out amplification by prime amplifier 304 in the analog image signal 302, make the output of its suitable display device, afterwards, after being converted to digital signal by analog/digital (A/D) converter 306, input format converter 406.
Horizontal/vertical frequency numerical value compares judgement by comparer 310 and the horizontal/vertical frequency limit value of setting according to user interface in the analog image signal, and its result imports microcomputer.
According to the numerical value of importing microcomputer, microcomputer 404 is to format converter 406 outputs and whether carry out the relevant control signal of mode switch, here, and horizontal frequency numerical value input clock generator 308, clocking.
By above-mentioned description, the related work personnel can carry out various change and modification fully in the scope that does not depart from this invention technological thought.Therefore, the technical scope of this invention is not limited to the detailed description on the instructions; Must determine its technical scope according to the scope of patented claim.
Claims (5)
1, a kind of display equipment mode changing control method comprised as the next stage,
Phase one: setting level and/or vertical synchronizing frequency boundary value;
Subordinate phase: the level and/or the vertical synchronizing frequency numerical value that detect the signal of video signal of input;
Phase III: the image level of more above-mentioned level and/or vertical synchronizing frequency boundary value and input and/or vertical synchronizing frequency numerical value;
The quadravalence section: the result of Pan Duaning relatively, but when the implementation pattern conversion during greater than level and/or vertical synchronizing frequency boundary value of above-mentioned image level and/or vertical synchronizing frequency numerical value.
2, display equipment mode changing control method as claimed in claim 1 is characterized in that, described level and/or vertical synchronizing frequency boundary value are by screen display (OSD) input.
3, display equipment mode changing control method as claimed in claim 1 is characterized in that, the signal of video signal of described input is a simulating signal.
4, display equipment mode changing control method as claimed in claim 1 is characterized in that, the signal of video signal of described input is a digital signal.
5, a kind of display equipment mode changing control device comprises:
Detect the level of the signal of video signal of importing and/or the pick-up unit of vertical synchronizing frequency;
The user interface of input level and/or vertical synchronizing frequency boundary value;
Compare the level and/or vertical synchronizing frequency and the level of user interface input and/or the comparison means of vertical synchronizing frequency that detect above;
The microcomputer control device that whether decision carries out mode conversion according to top comparative result;
But format conversion apparatus according to the control implementation pattern conversion of microcomputer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA200410090935XA CN1773331A (en) | 2004-11-10 | 2004-11-10 | Display equipment mode changing controlling apparatus and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA200410090935XA CN1773331A (en) | 2004-11-10 | 2004-11-10 | Display equipment mode changing controlling apparatus and method |
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| Publication Number | Publication Date |
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| CN1773331A true CN1773331A (en) | 2006-05-17 |
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| CNA200410090935XA Pending CN1773331A (en) | 2004-11-10 | 2004-11-10 | Display equipment mode changing controlling apparatus and method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3703354A4 (en) * | 2017-12-08 | 2020-12-02 | Samsung Electronics Co., Ltd. | Display device and control method therefor |
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- 2004-11-10 CN CNA200410090935XA patent/CN1773331A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3703354A4 (en) * | 2017-12-08 | 2020-12-02 | Samsung Electronics Co., Ltd. | Display device and control method therefor |
| US11336879B2 (en) | 2017-12-08 | 2022-05-17 | Samsung Electronics Co., Ltd. | Display apparatus and controlling method thereof |
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