CN1234240C - Automatic judgement method of display input mode - Google Patents
Automatic judgement method of display input mode Download PDFInfo
- Publication number
- CN1234240C CN1234240C CN 02144743 CN02144743A CN1234240C CN 1234240 C CN1234240 C CN 1234240C CN 02144743 CN02144743 CN 02144743 CN 02144743 A CN02144743 A CN 02144743A CN 1234240 C CN1234240 C CN 1234240C
- Authority
- CN
- China
- Prior art keywords
- input pattern
- synchronizing signal
- vertical synchronizing
- signal frequency
- digital
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Controls And Circuits For Display Device (AREA)
Abstract
The present invention discloses an automatic judgment method of a display input mode, which brings convenience to users and prevents abnormal image processing and image display, which comprises the stages: calculating the horizontal synchronizing signal frequency value and the vertical synchronizing signal frequency value of image signals inputted through an input channel by using a control approach in a display provided with a digital TV, a PC image signal input channel and a control approach; calculating the amplitude of the vertical synchronizing signals when the calculated horizontal synchronizing signal frequency value and the calculated vertical synchronizing signal frequency value are the same as the set horizontal synchronizing signal frequency value and the vertical synchronizing signal frequency value, and comparing the calculated horizontal synchronizing signal frequency value and the calculated vertical synchronizing signal frequency value with a prescribed standard value; judging the digital TV input mode or the PC input mode according to the comparison results. The present invention can automatically and correctly judge and process proper images, create convenient conditions for users, prevent abnormal image processing or image display and enhance the reliability of products.
Description
Technical field
The present invention relates to the display image facture, especially make things convenient for the user, prevent the automatic distinguishing method of the display input pattern that image processing and video picture are unusual.
Background technology
General display is input PC picture signal and digital TV picture signal, has the input channels such as D-SUB of 15 plugs, connects PC and digital TV picture signal incoming line by input channel.Wherein, will belong to the picture signal of selected input mode numeral TV/PC,, on picture, give video picture through the image processing process of having stipulated.
At this moment,,,, calculate above-mentioned horizontal/vertical synchronization signals frequency values, differentiate definition and the digital TV/PC of input pattern at the control part of display because the horizontal/vertical synchronization signals frequency values is different from the picture signal of digital TV and PC output.But in digital TV and PC, when the picture signal of input was the 640*480P definition, the horizontal frequency value was 31.5kHz, and the vertical frequency value is that 60Hz is consistent.
Prior art display image facture is carried out image processing behind the differentiation input pattern as shown in Figure 1, is described in detail as follows:
The user is by the display menu image, selects a kind of S21 in digital TV pattern and the PC pattern with manual method.
If the user selects digital TV Mode S 22, then at control section, calculate in the picture signal by the D-SUB input, from the vertical V synchronous signal frequency of the horizontal H/ value S23 that picture signal comprised of digital TV input.
At this moment, according to the result of calculation of horizontal/vertical synchronization signals frequency values, the definition of discriminating digit TV picture signal.
Then, control part is controlled various ICS24s in order to handle from the picture signal of digital TV output for being fit to the definition of above-mentioned differentiation during display interior constitutes.
Because the control of IC, the picture signal from digital TV output is rasterized out S25 by display picture.
If above-mentioned user selects the S26PC mode,, calculate in the picture signal by the D-SUB input the vertical V synchronous signal frequency of the horizontal H/ value S27 that is comprised in the picture signal of PC input then at control part.
At this moment, according to the result of calculation of horizontal/vertical synchronization signals frequency values, differentiate the definition of PC picture signal.
Then, the definition of control part for being fit to differentiate in order to handle the picture signal of exporting from PC, controlled various ICS28 during display interior constitutes.
Because the control of IC, the picture signal from PC output is rasterized out S29 by display picture.
There is following point in present display:
Can not differentiate input mode automatically, the user carries out manual operations, its inconvenient operation; As user's misoperation,, the anomaly of image processing and video picture will be caused if the picture signal of input is different with selected input pattern.
Summary of the invention
Technical problem to be solved by this invention provides a kind of automatic distinguishing method of display input pattern, has solved the problem that above-mentioned existing display exists, and makes the user easy and simple to handle, has prevented the unusual appearance of image processing and video picture simultaneously.
Be achieved in that in display in order to solve the problems of the technologies described above the present invention with digital TV input pattern or PC input pattern picture signal input channel and control device, it is characterized in that comprising and utilize control device, differentiate the level of the picture signal of importing by input channel and the step of vertical synchronizing signal frequency values; When level and the vertical synchronizing signal frequency values being differentiated out, when level of setting separately and vertical synchronizing signal frequency values are identical together, differentiate the range value of vertical synchronizing signal, the same specified standard value of this range value is compared, according to comparative result, judge the step of digital TV input pattern or PC input pattern then.
Advantageous effect of the present invention is: even the user does not select input pattern especially, also automatically the correct decision input pattern is handled suitable image, not only make things convenient for condition, can also prevent image processing or display abnormality, improve the product confidence level to user's creation.
Description of drawings
Fig. 1 is the product schematic diagram that shows prior art display input method.
Fig. 2 is the product schematic diagram that shows the automatic distinguishing method of display input pattern.
Embodiment
The automatic distinguishing method that is illustrated the display input pattern below with reference to accompanying drawings is as follows.
Shown in Figure 2, the automatic distinguishing method of display input pattern of the present invention, control section are the frequency values S31 that differentiates the image signal level/vertical synchronizing signal that is transfused to by D-SUB.
At this moment, judge the definition of the picture signal of input.
Then, differentiate whether the horizontal frequency value is 31.5kHz, whether the vertical frequency value is 60HzS32.
If above-mentioned differentiation is S32 as a result, the horizontal frequency value is not 31.5kHz, when the vertical frequency value is not 60Hz, judges whether pairing horizontal frequency value and vertical frequency value are digital TV input pattern S33.
If this moment, the horizontal frequency value is beyond the 31.5KHz, and when the vertical frequency value was a frequency values beyond the 60Hz, digital TV and PC were different mutually, because of storing digital TV and PC frequency value corresponding separately in the control section already.So, compare with the frequency values of having stored by horizontal frequency value and the vertical frequency value of having differentiated, can judge digital TV/PC mode.
If above-mentioned judged result is digital TV mode S33,, in display interior constitutes,, control various ICS34 for handling from the picture signal of digital TV output then for being fit to the definition of above-mentioned differentiation.
Then, video picture goes out the control owing to IC, the picture signal S35 that is output in digital TV on display picture.
If above-mentioned judged result is PC mode S33,, in display interior constitutes,, control various ICS37 for handling from the picture signal of PC output then for being fit to the definition of above-mentioned judgement.
Then, video picture goes out because the control of above-mentioned IC on display picture, the picture signal S38 that is output at PC.
When above-mentioned judged result S32 horizontal frequency is 31.5KHz, during vertical frequency 60Hz, as mentioned above, because digital TV input pattern is the same with the PC input pattern, for differentiating two kinds of digital TV input pattern/PC input patterns, and whether the amplitude of vertical equivalent signals is judged S36 below 0.13ms.
At this moment, though the frequency values of digital TV input pattern and PC input pattern is consistent, but because the amplitude of vertical synchronizing signal is inconsistent mutually, the amplitude of vertical synchronizing signal is more than the 0.13ms when being digital TV input pattern, and the amplitude of vertical synchronizing signal is below the 0.13ms during PC input pattern.So,, can judge input mode by the comparison of synchronizing signal amplitude.
If judged result S36, the amplitude of vertical synchronizing signal is 0.13ms when following, then is judged as the PC input pattern, for being fit to the definition of above-mentioned judgement, in display interior constitutes,, control various ICS37 for handling the picture signal that from the PC input pattern, is output.
Then, because the control of IC, the picture signal from the PC input pattern is exported can be shown S38 on display picture.
If above-mentioned differentiation S36 as a result, the amplitude of vertical synchronizing signal is 0.13ms when above, then is judged as digital TV input pattern, for being fit to the definition of above-mentioned judgement, in the formation of processing display inside, the picture signal that digital TV input pattern is output is controlled various ICS34.
Then, the picture signal from digital TV output is presented at S35 in the display frame because IC controls.
Above-mentioned control section of the present invention is an essential structure principle of the present invention, detect is to give comparison with standard value after the amplitude of horizontal/vertical synchronization signals frequency values and synchronizing signal, judge for implementing digital TV/PC input pattern, can comprise the microprocessor or the scaler of executable program.
Claims (5)
1. the automatic distinguishing method of a display input pattern, in display with digital TV input pattern or PC input pattern picture signal input channel and control device, it is characterized in that comprising and utilize control device, differentiate the level of the picture signal of importing by input channel and the step of vertical synchronizing signal frequency values; When level and the vertical synchronizing signal frequency values being differentiated out, when level of setting separately and vertical synchronizing signal frequency values are identical together, differentiate the range value of vertical synchronizing signal, the same specified standard value of this range value is compared, according to comparative result, judge the step of digital TV input pattern or PC input pattern then.
2. the automatic distinguishing method of display input pattern according to claim 1 is characterized in that above-mentioned control section is for implementing digital TV or PC input pattern, the microprocessor that comprises executable program or scaler.
3. the automatic distinguishing method of display input pattern according to claim 1 is characterized in that the above-mentioned horizontal-drive signal frequency values of having set is 31.5kHz, and the vertical synchronizing signal frequency values is 60Hz.
4. the automatic distinguishing method of display input pattern according to claim 1, it is characterized in that after calculating the range value of above-mentioned vertical synchronizing signal, the specified standard value compares together, according to comparative result, judge in the step of digital TV input pattern or PC input pattern, comprise if the vertical synchronizing signal amplitude calculated less than specified standard value, then be judged as the PC input pattern, the amplitude of vertical synchronizing signal surpasses the step that specified standard value then is judged as digital TV input pattern.
5. the automatic distinguishing method of display input pattern according to claim 1, it is mutual inconsistent the time with the level of having set and vertical synchronizing signal frequency values separately to it is characterized in that working as the level calculated and vertical synchronizing signal frequency values, the level calculated and vertical synchronizing signal frequency values are compared with each digital TV input pattern of having set or PC input pattern level and vertical synchronizing signal frequency values, carry out discriminating digit TV input pattern or PC input pattern.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02144743 CN1234240C (en) | 2002-12-10 | 2002-12-10 | Automatic judgement method of display input mode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02144743 CN1234240C (en) | 2002-12-10 | 2002-12-10 | Automatic judgement method of display input mode |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1507275A CN1507275A (en) | 2004-06-23 |
| CN1234240C true CN1234240C (en) | 2005-12-28 |
Family
ID=34232087
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02144743 Expired - Fee Related CN1234240C (en) | 2002-12-10 | 2002-12-10 | Automatic judgement method of display input mode |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1234240C (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100373918C (en) * | 2004-08-18 | 2008-03-05 | 南京Lg新港显示有限公司 | Input signal discriminating device and method for image display equipment |
| CN100421148C (en) * | 2005-01-26 | 2008-09-24 | 明基电通股份有限公司 | Automatic entering to factory mode type display device and method and computer readable media |
-
2002
- 2002-12-10 CN CN 02144743 patent/CN1234240C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1507275A (en) | 2004-06-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1190957C (en) | Apparatus and method for detecting display mode | |
| US5699123A (en) | Television receiver with an adjustable frame size | |
| CN1057417C (en) | Device for identification of type of picture and automatic device for identifying ratio of width and height using same | |
| CN101138238B (en) | Display device and contrast adjusting method | |
| US7812888B2 (en) | Video signal determination device, a video display device, a video signal determination method, and a video display method for determining the type of a video signal that contains a synchronizing signal | |
| CN100556120C (en) | A kind of three-dimensional adaptive method for testing motion of deinterlacing technique | |
| CN1234240C (en) | Automatic judgement method of display input mode | |
| CN1066886C (en) | Self adaption synchronous signal separator | |
| CN102314057A (en) | Rainbow effect improving device and method, and color sequential display | |
| US6195087B1 (en) | Method and device for preventing the jumping phenomenon of an OSD display region on a monitor screen | |
| CN1159910C (en) | Method for executing different functions by using one key and executing identical function by using different keys | |
| KR100386600B1 (en) | Input mode auto decision method of monitor | |
| JP3241539B2 (en) | Video signal processing circuit | |
| JP2910883B2 (en) | Video signal processing device | |
| JP3232950B2 (en) | Video type identification device, automatic aspect ratio identification device and television receiver using the same | |
| CN1150753C (en) | Method and device for preventing OSD display area jumping on screen | |
| CN100373918C (en) | Input signal discriminating device and method for image display equipment | |
| JP2719470B2 (en) | Color contour correction circuit | |
| KR0133458B1 (en) | Method & circuit for automatic revision verticality size | |
| JPH0410794A (en) | Picture quality correcting circuit | |
| CN101677409B (en) | State detector for video unit and method for detecting state | |
| CN101527868A (en) | Method for processing image signal and related devices | |
| US7173670B2 (en) | Device and method to detect video format based on a cyclical period of a horizontal synchronizing signal | |
| KR20070051077A (en) | Device and method for video signal format decision of video apparatus | |
| KR100425098B1 (en) | Method and apparatus for processing input signal of digital TV |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: NANJING LG XINGANG DISPLAY CO., LTD. Free format text: FORMER OWNER: LG ELECTRONICS (SHENYANG) CO., LTD. Effective date: 20070316 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20070316 Address after: 210038 No. 346 Yao Yao Avenue, Nanjing economic and Technological Development Zone, Jiangsu, China Patentee after: LG Electronics Nanjing Display Co., Ltd. Address before: 110179 No. 35, No. 40, hi tech Development Zone, Liaoning, Shenyang Patentee before: LG Electronics (Shenyang) Co., Ltd. |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20051228 Termination date: 20131210 |