CN1816124A - Screen-bending compensation device and method for projection type image display apparatus - Google Patents
Screen-bending compensation device and method for projection type image display apparatus Download PDFInfo
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- CN1816124A CN1816124A CNA2005100458203A CN200510045820A CN1816124A CN 1816124 A CN1816124 A CN 1816124A CN A2005100458203 A CNA2005100458203 A CN A2005100458203A CN 200510045820 A CN200510045820 A CN 200510045820A CN 1816124 A CN1816124 A CN 1816124A
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Abstract
The invention includes following parts: unit of detecting bending for detecting degree of curve on screen; controller for outputting control signal to compensate curve on screen based on detected degree of curve. The invention carries out compensation to curve on screen in order to prevent undesirable deformation of image from happening in advance. Using simple keyboard operation can compensate curve of image on screen. The invention raises correctness video and audio felt by users.
Description
Affiliated technical field
The present invention relates to a kind of image display, when particularly relating to a kind of projection-type image display apparatus that uses the porjection type light engine, can detect and compensate the screen-bending compensation device and the method that cause the projection-type image display apparatus of screen-bending phenomenon by optical texture.
Background technology
Common so-called projection-type image display apparatus is a kind ofly when amplifying projection, can realize original image on other screens the display system of big picture to little image by optical lens (being light engine and projecting mirror).There are projection (Proiection) TV (TV) and projecting apparatus etc. in this system.
The general projection-type image display apparatus formation that forms above-mentioned display system is described as follows:
Projection-type image display apparatus 1 is to be made of following part as shown in Figure 1: for launching the light engine 2 that light is provided with; For the light by light engine 2 emissions is amplified the projecting mirror 3 that projection is provided with; For amplifying the light of projection, reflex to screen 5 and the speculum 4 of setting by projecting mirror 3 comprehensively; For the light by speculum 4 reflections is formed the transparent type screen 5 that image is provided with.Here, light engine 2 and projecting mirror 3 are installed in the cabinet 7 of lower end of shell 6.In order to reflex to transparent type screen 5 to the light that amplifies projection by projecting mirror 3, speculum 4 is installed in the back side, inside of cabinet 8 of the upper end of shell 6.In order to form image to the light by speculum 4 reflections on screen 5 comprehensively, transparent type screen 5 is installed in the positive front with speculum 4 rightabout shells 6.
(TV) of above-mentioned formation, as shown in Figure 2, wherein, screen 5 is fixed on the corner angle on four limits of screen by hold-down screw 11 ∽ 14.
Therefore, though described conventional projection television has the effect of the buckling phenomenon that can prevent screen 5 in a short time,,, then change or screen 5 dead weights cause and become Qu Xianxiang owing to environment temperature or humidity if projection TV uses for a long time.
And, in the projection TV (TV) of conventional art,, therefore there is the phenomenon that produces the picture bending owing to do not prevent the method for screen-bending phenomenon.
Summary of the invention
The present invention develops in order to solve the problems of the technologies described above, and its objective is provides a kind of screen-bending compensation device that can prevent the projection-type image display apparatus of screen-bending phenomenon.
Another object of the present invention provides a kind of screen-bending compensation method that can compensate the projection-type image display apparatus of screen-bending phenomenon automatically.
The screen-bending compensation device of the projection-type image display apparatus of developing in order to reach above-mentioned purpose of the present invention is to be made of following part: for detecting the curved detection portion that the screen-bending degree is provided with; According to the degree of crook that curved detection portion is detected, the control part that control signal is provided with is exported in the compensation of bending for forming; According to the control signal of control part, for compensating the compensate for bend portion that the screen-bending state is provided with.
Described compensate for bend portion is motor and is made of the motor driven portion that motor driven is controlled according to the control signal of motor and control part.
Described curved detection portion is the end that many 1st and the 2nd distance detectors is installed in the screen two ends.
For reaching the screen-bending compensation method of the projection-type image display apparatus of the present invention that above-mentioned purpose develops, the screen-bending compensation method that promptly has the projection-type image display apparatus of screen, curved detection portion and motor was made up of the following stage: by curved detection portion the degree of crook of screen is carried out detection-phase; Degree of crook according to detecting compensates the stage by drive motor to screen-bending information.
It is whether the fiducial value of storing in the detected value that detects according to curved detection portion and the memory has difference and detect that described degree of crook to screen carries out detection-phase.
Described to the screen-bending information stage of compensating be when coming drive motor according to detected degree of crook, the stage that the screen position is moved.
The screen-bending compensation device of projection-type image display apparatus of the present invention and method have following effect:
The first, because the present invention carries out compensation to screen-bending automatically by detecting degree of crook, therefore can prevent the twisted phenomenon of picture in advance.
The second, owing to only can form compensation to screen-bending by the simple keyboard operation of user, so the user is simple to operate.
The 3rd, owing to can compensate the twisted phenomenon of picture, therefore improved user's audiovisual sensation degree.
Description of drawings
Fig. 1 is the formation block diagram of general projection-type image display apparatus.
Fig. 2 is the stationary state presentation graphs of screen shown in Figure 1.
Fig. 3 is the block diagram of the screen-bending compensation device of projection-type image display apparatus of the present invention.
Fig. 4 is the example table diagrammatic sketch of projection-type image display apparatus buckling phenomenon of the present invention.
Fig. 5 is the flow chart of the screen-bending compensation method of projection-type image display apparatus of the present invention.
Major part symbol description to accompanying drawing
100: image display, 101: tuner, 102: demultplexer, 103: picture signal handling part, 104: screen display portion, 105: keyboard input part, 106: memory, 107: control part, 200: curved detection portion, 201: the 1 distance detectors, 202: the 2 distance detectors, 300: compensate for bend portion, 301: motor driven portion, 302: motor.
Embodiment
Below, with reference to accompanying drawing, the screen-bending compensation device and the method for projection-type image display apparatus of the present invention described.
Fig. 3 is the block diagram of the screen-bending compensation device of projection-type image display apparatus of the present invention; Fig. 4 is an example table diagrammatic sketch of projection-type image display apparatus degree of crook of the present invention; Fig. 5 is the flow chart of the screen-bending compensation method of projection-type image display apparatus of the present invention.
The screen-bending compensation device of projection-type image display apparatus of the present invention is to be made of following part as shown in Figure 3: image display 100; The curved detection portion 200 that the screen-bending degree of the screen display portion 104 of composing images display device 100 is detected; The case of bending that detects according to curved detection portion 200, the compensate for bend portion 300 that the case of bending of the screen of screen display portion 104 is compensated.
Mend compensate for bend portion 300 and be the fiducial value that the detected value that detects by motor 302 and according to the 1st and the 2nd distance detector 201,202 of curved detection portion 200 and memory 106 store and whether have difference, and by the control signal that control part 107 is exported, the motor driven portion 301 that is provided with for drive signal being outputed to motor 302 constitutes.
Below the work of the screen-bending compensation device of the projection-type image display apparatus of the present invention of above-mentioned formation is described.
If the user is by keyboard input part 105 input energized orders, then control part 107 will select the user to wish channel by tuner 101; And pass through the broadcast singal that tuner 101 is selected channels, be input to demultplexer 102 and be separated into image, audio frequency and additional information etc. afterwards.
And the picture signal by demultplexer 102 separates is treated to the signal that can show by picture signal handling part 103, and the screen of processed picture signal by screen display portion 104 is shown.
But if the screen of picture signal by screen display portion 104 shown, then the screen of screen display portion 104 is owing to reasons such as temperature and humidity variation and deadweight cause buckling phenomenon on the screen of screen display portion 104.
The buckling phenomenon that causes on the screen of this screen display portion 104 when the picture signal that display image signals handling part 103 is handled, produces a very large impact image quality.
For this reason, if the user by keyboard input part 105 entr screen compensate for bend orders, then the degree of crook of the screen of this screen display portion 104 will detect in curved detection portion 200; And whether control part 107 will consistent according to the fiducial value of storing in the distance value that detects by curved detection portion 200 and the memory 106, and degree of crook is judged.
Therefore, control part 107 compares the fiducial value of storage in the detected value of curved detection portion 200 detections and the memory 106, and, if produced different range deviation (L), then control signal is outputed to motor driven portion 301 and drive motor 302 with the same comparative result shown in Figure 4.
At this moment, motor 302 is fixed on the end of a corner of the screen of screen display portion 104, and when coming drive motor 302, the screen of screen display portion 104 is moved clearly to direction from ambiguous direction come the compensated bend phenomenon by the control signal of motor driven portion 301.
Below, the screen-bending compensation method to the projection-type image display apparatus of the present invention of above-mentioned formation describes with reference to Fig. 5.If the user selects the compensate for bend pattern, then read detected value (S101 ∽ S102) from curved detection portion.
Then, according to judged result (S102), judge (S103) to whether producing bending from the detected value that reads by test section.
Then, if judged result (S103) has produced bending, then drive motor is adjusted the screen position (S104).
Then, if site error is judged as so and has finished compensation below the fiducial value of setting after reaffirming the screen position; If the user imports the powered-down order, then finish (S105 ∽ S107).
As above-mentioned, the screen-bending compensation device of projection-type image display apparatus of the present invention and method, if the user selects beam mode, then the degree of crook that detects according to the curved detection portion of screen regulation zone installation calculates range deviation, and the driving of control motor comes compensate; Stop the driving of motor when the deviation of distance reduces to the fiducial value of setting when following, thereby realized the compensation of screen-bending.
Claims (6)
1, the screen-bending compensation device of projection-type image display apparatus, it comprises screen, it is characterized in that it being to be made of following part:
For detecting the curved detection portion that the screen-bending degree is provided with;
According to the degree of crook that curved detection portion is detected, the control part that control signal is provided with is exported in the compensation of bending for forming; According to the control signal of control part, for compensating the compensate for bend portion that the screen-bending state is provided with.
2, the screen-bending compensation device of projection-type image display apparatus according to claim 1 is characterized in that described compensate for bend portion is motor and is made of the motor driven portion that motor driven is controlled according to the control signal of motor and control part.
3, the screen-bending compensation device of projection-type image display apparatus according to claim 1 is characterized in that described curved detection portion is installed in the bending compensation device of the end at screen two ends as the projection-type image display apparatus of its feature to many 1st and the 2nd distance detectors.
4, the screen-bending compensation method of projection-type image display apparatus, form by the following stage in the screen-bending compensation method of the projection-type image display apparatus of curved detection portion that is provided with screen, constitutes by many distance detectors and motor:
By curved detection portion the degree of crook of screen is carried out detection-phase;
Degree of crook according to detecting compensates the stage by drive motor to screen-bending information.
5, the screen-bending compensation method of projection-type image display apparatus according to claim 4 is characterized in that it is whether the fiducial value of storing in the detected value that detects according to curved detection portion and the memory has difference and detect degree of crook that described degree of crook to screen carries out detection-phase.
6, the screen-bending compensation method of projection-type image display apparatus according to claim 4, it is characterized in that described is when coming drive motor according to detected degree of crook, the position of screen to be moved to the screen-bending information stage of compensating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2005100458203A CN1816124A (en) | 2005-02-02 | 2005-02-02 | Screen-bending compensation device and method for projection type image display apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2005100458203A CN1816124A (en) | 2005-02-02 | 2005-02-02 | Screen-bending compensation device and method for projection type image display apparatus |
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| Publication Number | Publication Date |
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| CN1816124A true CN1816124A (en) | 2006-08-09 |
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| CNA2005100458203A Pending CN1816124A (en) | 2005-02-02 | 2005-02-02 | Screen-bending compensation device and method for projection type image display apparatus |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104219471A (en) * | 2013-05-31 | 2014-12-17 | Lg电子株式会社 | Image display device and method of controlling the same |
| CN107084697A (en) * | 2017-04-20 | 2017-08-22 | 武汉新芯集成电路制造有限公司 | Memory cell distortion measurement method |
-
2005
- 2005-02-02 CN CNA2005100458203A patent/CN1816124A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104219471A (en) * | 2013-05-31 | 2014-12-17 | Lg电子株式会社 | Image display device and method of controlling the same |
| CN104219471B (en) * | 2013-05-31 | 2017-07-28 | Lg电子株式会社 | Image display device and its control method |
| CN107084697A (en) * | 2017-04-20 | 2017-08-22 | 武汉新芯集成电路制造有限公司 | Memory cell distortion measurement method |
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