CN1209914C - Projected picture correcting method and device for projection display - Google Patents
Projected picture correcting method and device for projection display Download PDFInfo
- Publication number
- CN1209914C CN1209914C CN 00130653 CN00130653A CN1209914C CN 1209914 C CN1209914 C CN 1209914C CN 00130653 CN00130653 CN 00130653 CN 00130653 A CN00130653 A CN 00130653A CN 1209914 C CN1209914 C CN 1209914C
- Authority
- CN
- China
- Prior art keywords
- projection display
- video signal
- dip angle
- vertical
- order
- 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
- Transforming Electric Information Into Light Information (AREA)
- Projection Apparatus (AREA)
Abstract
The present invention relates to a method and a device for automatically correcting the projected pictures of a projection display. The method comprises the following steps: measuring the location parameters of the projection display, which comprises the distance and the vertical tilt angle of a plane for placing the projection display; judging whether the distance and the vertical tilt angle of the plane for placing the projection display are respectively deflected from a corresponding preset standard value or not; finding out the corresponding correction value to the distance or the vertical tilt angle of the plane for placing the projection display when the standard value corresponding to distance or the vertical tilt angle of the plane for placing the projection display is obtained; correcting the inputted video picture signals according to the corresponding correction value to the distance or the vertical tilt angle of the plane for placing the projection display and outputting the corrected video picture signals so as to project onto a screen. The distance and the vertical tilt angle of the plane for placing the projection display are measured by a distance detector and a tilt angle detector of the plane for placing the projection display, and the correction of pre-outputted pictures is carried out by a control circuit and software.
Description
Technical field
The present invention relates to a kind of method and apparatus of proofreading and correct the projected picture of the projection display, and be particularly related to a kind of can be from the method and apparatus of the projected picture of the dynamic(al) correction projection display.
Background technology
For the projection display, the projection angle of its standard is during with the camera lens level, when projection display project is rectangular frame to an image perpendicular to the projection screen of this camera lens, this picture is distortionless image, but when the camera lens of the projection display is partial to the left side or deflection the right by the height of frame height, reduction or both sides and storing face, that is camera lens is not that then the picture of projection can produce trapezoidal distortion when corresponding to a vertical projected picture.
The projection display that generally has trapezoidal distortion revisal design, all need after having adjusted projection angle, utilize the trapezoidal distortion revisal software on the projection display to come driving electronics, produce the image of revisal, but this kind adjustment process still must be come identification with human eye, whether image distortion has been done optimized correction, yet, usually do not make clear the adjustment mode for non-professional user, also be difficult for reaching point-device degree with the adjusted projected picture accuracy of human eye identification still more.
Summary of the invention
For addressing the above problem, the present invention proposes a kind of projected picture correcting method of the projection display, in order to an input video signal of video signal is proofreaied and correct, to export a undistorted video image signal, this method comprises: detect this projection display with respect to level inclination of a horizontal plane and a vertical dip angle with respect to a vertical plane of vertical this horizontal plane; Judge whether this level inclination and this vertical dip angle are offset this horizontal plane or this vertical plane, if there is skew then to produce a side-play amount; By this side-play amount of this level inclination or this vertical dip angle, ask for this side-play amount pairing one trapezoidal correction value of this level inclination or this vertical dip angle; And according to this level inclination or pairing this trapezoidal correction value of this vertical dip angle side-play amount, with this input video image correction, and should undistorted video image signal projection.
The present invention proposes a kind of projected picture correcting method of the projection display, in order to an input video signal of video signal is proofreaied and correct, to export a undistorted video image signal, this method comprises: detect this projection display with respect to a storing face or hang one of face put identity distance from, with the vertical dip angle with respect to a vertical plane, wherein this face of hanging is the plane of hanging of fixing this projection display; Judge this storing identity distance from whether be offset this storing face with this vertical dip angle, this hangs face or this vertical plane, if there is skew then to produce a corresponding side-play amount; According to this put identity distance from or pairing this side-play amount of this vertical dip angle skew, ask for this storing identity distance from or this vertical dip angle pairing one trapezoidal correction value; And according to this put identity distance from or pairing this trapezoidal correction value of this vertical dip angle skew, with this input video image correction, and this undistorted video image signal of projection.
The present invention proposes a kind of projected picture means for correcting of the projection display, in order to an input video signal of video signal is proofreaied and correct, to export a video image signal of proofreading and correct, this device comprises: an inclination angle detection device, in order to detect this projection display with respect to level inclination of a horizontal plane and a vertical dip angle with respect to a vertical plane of vertical this horizontal plane; An and control circuit, be coupled to this inclination angle detection device, in order to receiving this level inclination and this vertical dip angle, and try to achieve a trapezoidal correction value by this level inclination and this vertical dip angle, and this input video signal of video signal proofreaied and correct, export the video image signal of this correction again.
The invention provides a kind of projected picture means for correcting of the projection display, in order to an input video signal of video signal is proofreaied and correct, to export a correcting video signal of video signal, this device comprises: one puts identity distance from detector, in order to detect this projection display and a storing face or hang one of face put identity distance from, wherein this face of hanging is the plane of hanging of fixing this projection display; One inclination angle detection device is in order to detect the vertical dip angle of this projection display with respect to a vertical plane; An and control circuit, be coupled to this storing identity distance from detector and this inclination angle detection device, in order to receive this storing distance and this vertical dip angle, and by this storing identity distance from trying to achieve a trapezoidal correction value with this vertical dip angle, and this input video signal of video signal proofreaied and correct, export the video image signal of this correction again.
For addressing the above problem, the present invention proposes a kind of automatic bearing calibration of projected picture and device of the projection display, and can monitor the parameters that the projection display corresponds to the position of putting at any time, as put identity distance from, level inclination or vertical dip angle or the like, and by these parameters cooperation circuit, automatically carry out the correction of distortion picture, whether picture is optimized correction and do not need user's identification, and the user need not do any correction.
The present invention proposes a kind of automatic bearing calibration of projected picture and device of the projection display, its storing identity distance that can detect the projection display at any time is from (or level inclination) and vertical dip angle, automatically carry out the correction of projected picture, even projector use position changes, also can be immediately the picture of distortion be carried out instant correction, and do not need the user to notice constantly whether picture has the position of the distortion and the projection display whether to change with software mode.
The automatic bearing calibration of the projected picture of the disclosed projection display of the present invention is described below.At first, detect the location parameter of the projection display, it comprises puts identity distance from (or level inclination) and vertical dip angle.Then, judge whether put identity distance is offset each self-corresponding preset standard value from (or level inclination) and vertical dip angle.When putting identity distance from pairing each standard value of (or level inclination) and vertical dip angle skew, can pass through this side-play amount, ask for and put identity distance from (or level inclination) and the pairing trapezoidal correction value of vertical dip angle.Be offset pairing trapezoidal correction value according to putting identity distance from (or level inclination) and vertical dip angle, with the video image signal correction of preparation output, and with on corrected video image signal projection to a projection screen.The trapezoidal correction value of aforesaid each parameter can be passed through the lookup table mode in bist data storehouse, or tries to achieve in the mode of software algorithm.
The projected picture automatic correction device of the disclosed projection display of the present invention can comprise one and put identity distance from detector, an inclination angle detection device and a control circuit, in order to the input video image signal is proofreaied and correct, to export a video image signal after proofreading and correct.Putting identity distance is in order to detect the storing distance between the projection display and storing face at any time from detector.The inclination angle detection device is in order to detect the projection display at any time respectively and level inclination between horizontal plane and vertical level and vertical dip angle.Control circuit is to be coupled to put identity distance from detector, inclination angle detection device, puts identity distance from (or level inclination) and vertical dip angle to receive, proofread and correct in order to instant video image signal preparation output, and the video image signal behind the output calibration.
In addition, comprise that also a Video Decoder is coupled to this control circuit, in order to receive and this input video signal of video signal of decoding; An one incoming frame buffer and an output frame buffer, wherein the incoming frame buffer is to be coupled between Video Decoder and the control circuit, in order to receive decoded input video signal of video signal and to deposit corresponding display frame coordinate data, and the output frame buffer is to be coupled to control circuit, in order to receive the video image signal after proofreading and correct and to deposit corresponding display frame coordinate data.
Description of drawings
For above-mentioned purpose of the present invention, feature and advantage can be become apparent, preferred embodiment cited below particularly, and conjunction with figs. elaborate.
Figure 1A and Figure 1B illustrate in embodiments of the present invention in order to the storing identity distance of the definition projection display schematic diagram from, level and vertical dip angle;
Fig. 2 illustrates the flow chart according to the automatic bearing calibration of projected picture of the projection display of embodiments of the invention;
Fig. 3 illustrates according to the projected picture of the projection display of the embodiments of the invention calcspar from dynamic(al) correction.
Embodiment
The automatic bearing calibration of the projected picture of the projection display of the present invention and device mainly be among the projection display, be provided with the storing identity distance that can detect the projection display from the detector at horizontal/vertical inclination angle.By detected storing identity distance from and the value at horizontal/vertical inclination angle and a standard value between poor, and table look-up by database or the mode of software algorithm is tried to achieve the trapezoidal correction value of a correspondence by this difference, preparation is projected to the adjustment of image of projection screen by this trapezoidal correction value.
In order to be illustrated more clearly in method and apparatus of the present invention, the storing identity distance that definition is relevant is from, level inclination and vertical dip angle at first earlier.With reference to Figure 1A and Figure 1B.When a storing face 20 is put or be hung to the projection display 10, this storing face is when being the plane of reference with the horizontal plane, then during the projection display 10 floor projections, the projection screen 25 that the projection display 10 is throwed, this projection screen 25 is to be almost plumbness with horizontal plane, picture on it is the picture of a no trapezoidal distortion, and this position is the position when the projection display 10 is seated in storing face 20 for level.The throw light central shaft of supposing the projection display 10 is not vertical with projection screen, and and 20 in storing face an inclination angle is arranged.At this moment, shown in Figure 1A, the projection display 10 is a distance D with the distance definition of the face of storing; The storing face that the projection display 10 is put (or hanging) is level reference I, and when the projection display 10 was elevated or reduces, the angle of its projection ray's axis and horizontal plane was horizontal sextant angle θ
1The inclination angle that the difference of height on limit, the projection display 10 left and right sides will produce a vertical plane, i.e. vertical level axis I ' and vertical shift axis II ' generation one vertical dip angle θ
2
Therefore, when there is the left and right sides difference of height ornaments position of the projection display 10, then the difference of height on limit, the left and right sides will produce the inclination angle [theta] of a vertical plane
2, put identity distance and when the D offset level is put face, then produce level inclination θ
1And a distance D, above-mentioned every skew all can make the rectangle that is projected on the projection screen be deformed into the skew of different azimuth shape such as trapezoidal, and then causes the projected picture distortion.
For this reason, the storing identity distance of the distance between that the present invention can detect the projection display 10 automatically in the installing of the inside of the projection display 10 especially and storing face is from detector 40, can detect the inclination angle detection device 50 of the level of the automatic detection projection display 10 and vertical offset angle and in order to the storing identity distance that receives the detected detection projection display 10 from D, level inclination θ
1With vertical dip angle θ
2After, wherein, if the projection display 10 optionally receives level inclination θ
1Or put identity distance and add a vertical dip angle θ from arbitrary signal of D
2Get final product, and then revise the control circuit 80 of projected picture.Whole automatic calibration circuit is detailed later.
The then automatic bearing calibration of projected picture of the disclosed projection display of explanation the present invention earlier is shown in the flow chart of its control flow Fig. 2.
At first, in step 30, put identity distance from the storing identity distance of detector 40 and 50 pairs of projection displays 10 of inclination angle detection device from D (or level inclination θ
1) and vertical dip angle θ
2Automatically detect.When the projection display 10 putting positions were changed to level, the image of its projection screen that projects to 25 was a distortionless image.Yet when if the position of the projection display 10 produces an angular deflection by frame height, reduction or with horizontal or vertical, it is projected to image on the projection screen and promptly produces in various degree trapezoidal distortion.
Be arranged on distance detector 40 in the projection display 10 and inclination angle detection device 50 can detect automatically anywhere or anytime the projection display 10 and as put identity distance between D, axis I, II (I ', II ') angle or the deviation of distance, but above-mentioned axis I, II (I ', II ') deviation, be that direction with gravity is the foundation of vertical reference face at present, and horizontal plane is the reference of horizontal coordinate.
Then, in step 32, with detected storing identity distance from D (or level inclination θ
1) and vertical dip angle θ
2, to judge the side-play amount of each parameter shift aforesaid standards.
Shown in Figure 1A, as detected level inclination θ
1During the right positions II (is benchmark with the drawing) of skew storing face 20 axis I, with on the occasion of expression, otherwise then represent with negative value, when detected storing identity distance is represented with negative value when D is lower than standard and puts identity distance from D, otherwise then with on the occasion of expression; Shown in Figure 1B, and as detected vertical dip angle θ
2The left position II ' time that is positioned at axis I ' represents with negative value, otherwise then with on the occasion of expression.
If detected storing identity distance is from D (or level inclination θ
1) and vertical dip angle θ
2When all not changing, that is consistent, then return step 30 and continue monitoring and put identity distance from D (or level inclination θ with detecting with standard value as benchmark
1) and vertical dip angle θ
2, cause its offset to have judged whether the false touch projection display 10 or accident at any time.
When detected storing identity distance from D (or level inclination θ
1) and vertical dip angle θ
2When one of them changes, promptly be offset the standard value as benchmark, then the image that is projected on the projection screen 25 this moment must produce trapezoidal distortion, has a strong impact on the quality of projection image.At this moment, just execution in step 34.In step 34, the control circuit 80 in the projection display 10 can be according to detected arbitrary storing identity distance from D (or level inclination θ
1) or vertical dip angle θ
2Ask for the trapezoidal distortion correction value (Ji Sidun correction) of a correspondence.For example, level inclination θ
1The correction value of a corresponding level orientation, vertical dip angle θ
2Corresponding vertical correction value, and put identity distance from D also the correction value of a corresponding level orientation (during enforcement, put identity distance from D and level inclination θ
1Can only get arbitrary parameter handles).Aforesaid each correction value can be built question blank in the memory in (look up talbe LUT) inquires about and gets, or tries to achieve via software algorithm, and tries to achieve corresponding trapezoidal distortion data by interior.Table one, table two and table three are listed respectively corresponding to level inclination θ
1, vertical dip angle θ
2With the embodiment of storing identity distance from the correction value of D.
Can learn by table one, as level inclination θ
1If during for-30 °, corresponding trapezoidal correction value just is-128, and can be learnt vertical dip angle θ by table two
2During for+30 °, corresponding trapezoidal correction value just is+128.In like manner, when putting identity distance from D offset criteria-5cm, the trapezoidal correction value of its correspondence just is-64.Be noted that this trapezoidal correction value question blank is not unalterable, during the projection display of corresponding different structure, have the trapezoidal correction value that is suitable for variant structure.These trapezoidal correction values all are to calibrate with the projection that the projection display is put at horizontal plane, and calibration value and corresponding parameters are based upon memory stores one by one become a lookup table database.This question blank can be stored in the codified read-only memory of for example electrically can erasing (electrically erasable and programmable read onlymemory, EEPROM) or among the flash memory (flash ROM), for the usefulness of control circuit 80 inquiries.
| Level inclination (θ 1) | Horizontal Ji Sidun correction value |
| -30 | -128 |
| … | … |
| -10 | -64 |
| … | … |
| 0 | 0 |
| … | … |
| 10 | 64 |
| … | … |
| 30 | 128 |
Table one
| Vertical dip angle (θ 2) | Vertical correction value |
| -30 | -128 |
| … | … |
| -10 | -64 |
| … | … |
| 0 | 0 |
| … | … |
| 10 | 64 |
| … | … |
| 30 | 128 |
Table two
| Distance (D) | Horizontal correction value |
| -10cm | -128 |
| … | … |
| -5cm | -64 |
| … | … |
| 0cm | 0 |
| … | … |
| 5cm | 64 |
| … | … |
| 10cm | 128 |
Table three
Then, arbitrary storing identity distance is from D (or level inclination θ
1) and vertical dip angle θ
2After pairing trapezoidal correction value is calculated or is found, then just execution in step 36.Control circuit 80 just can be revised the trapezoidal distortion that is projected in projection screen 25 according to the trapezoidal correction value of being tried to achieve.After the trapezoidal distortion of projection image is corrected, just is returned to step 30 again and continues monitoring and detect the storing identity distance from D (or level inclination θ
1) and vertical dip angle θ
2, be the offset state of the projection display 10 to judge at any time.
The present invention is the correcting mode that adopts electronic type to the bearing calibration of trapezoidal distortion.At the timing that carries out trapezoidal distortion, be not the position of readjusting the projection display.According to the present invention, when detected storing identity distance from D (or level inclination θ
1) and vertical dip angle θ
2When skew being arranged, then can produce corresponding trapezoidal correction value and go to revise the position of image projecting on projection screen, to proofread and correct the trapezoidal distortion that causes because of projection display position change with the standard value of presetting.
Then with reference to Fig. 3, it illustrates the block schematic diagram of the projected picture automatic correction device of the projection display of the present invention.This correcting circuit can comprise puts identity distance from detector 40, inclination angle detection device 50, control circuit 80, correction value (revisal amount) question blank 90, Video Decoder 60, incoming frame buffer 70A and output frame buffer 70B.Put identity distance from detector 40, inclination angle detection device 50, correction value (revisal amount) question blank 90, incoming frame buffer 70A and output frame buffer 70B all are coupled to control circuit 80.60 of Video Decoders couple by incoming frame buffer 70A and control circuit.
Video Decoder 60 can receive the analog and digital signal of input, and especially the coordinate values of image output frame to incoming frame buffer 70A.Control circuit 80 is receiving after signal that incoming frame buffer 70A transmitted just handled, and the signal after will handling again exports output frame buffer 70B to.Afterwards, the data of being stored according to output frame buffer 70B are projected to image frame on the projection screen 25 via optical system.
The storing identity distance in order to detect the distance of 20 in the projection display 10 and storing face, is particularly put the side-play amount of face from detector 40 with a standard level, it is described as defined above in this just few inking.Afterwards, just send detected storing identity distance to control circuit 80 from D.50 of inclination angle detection devices are in order to detecting the projection display 10 respectively with respect to the deviation angle between the stdaxis I ' of horizontal direction stdaxis I and vertical direction, that is level inclination θ
1With vertical dip angle θ
2, and its as defined above institute's art in this just few inking.Afterwards, just with detected level inclination θ
1With vertical dip angle θ
2Control circuit 80.
Control circuit 80 is put storing identity distance that identity distance sends from detector 40 and inclination angle detection device 50 from D (or level inclination θ receiving
1) and vertical dip angle θ
2After, just it has been judged whether relatively that with standard value skew produces respectively.If do not have, then directly receive after signal that incoming frame buffer 70A transmitted just handled, the signal after will handling again exports output frame buffer 70B to.Afterwards, the data of being stored according to output frame buffer 70B are projected to image frame on the projection screen 25 via optical system.
Otherwise the storing identity distance that sends from detector 40 and inclination angle detection device 50 when control circuit 80 received storing identity distances is from D (or level inclination θ
1) and vertical dip angle θ
2When having the skew of generation to change, the image of its expression projection can produce trapezoidal distortion.Control circuit 80 meetings this moment go trapezoidal correction value question blank 90 to ask for corresponding correction value according to the value that is detected.Corresponding each put identity distance from D (or level inclination θ
1) and vertical dip angle θ
2Correction value try to achieve after, just control circuit can carry out the error correction of trapezoidal distortion according to the data that are stored among memory (as the EEPROM) 80A.For example, to add above-mentioned correction of trying to achieve from the data that incoming frame buffer 70A receives, to the frame coordinate of image carry out revisal and correction (this alignment technique is a known technology, so, do not repeat them here) after, corrected frame coordinate is outputed to output frame buffer 70B.Afterwards, the corrected frame coordinate data of being stored according to output frame buffer 70B is projected to image frame on the projection screen 25 via optical system.
Therefore, when the projection display 10 causes trapezoidal distortion because of the ornaments position change, the user needn't adjust the position of the projection display 10, control circuit 80 by inside and each correction parameter etc. just can electronic calibration mode, change the image frame of institute's projection, make the image that throws away be the rectangle image after proofreading and correct.Simultaneously, can automatically detected value be sent to control circuit 80 owing to put identity distance at any time from detector 40 and inclination angle detection device 50, control circuit 80 just can go to detect the projection display 10 positions at any time, to revise the projection error of image at any time, make the image of projection can proofread and correct image again into rectangle.In addition, the user can worry to go at any time to note whether the projection display 10 is put in the tram, can carry out the correction of projection image's trapezoidal distortion from detector 40 or inclination angle detection device 50 automatically with control circuit 80 by putting identity distance.
In sum, automatic bearing calibration of the projected picture of the projection display of the present invention and device are compared with known technology and are had following advantage and effect at least:
Automatic bearing calibration of projected picture and device according to the projection display of the present invention, its storing identity distance that can detect the projection display automatically is from position parameters such as, level inclination and vertical dip angle, carrying out the correction of projected picture automatically, and do not need user's identification and adjust projected picture.
Automatic bearing calibration of the projected picture of the projection display of the present invention and device, be the storing identity distance that detects the projection display at any time from, level inclination and vertical dip angle, automatically carry out the correction of distortion picture, even use makes the position change of the projection display, even also can carry out instant correction to the picture of distortion, and not need the user to notice constantly whether the position of the projection display changes with software mode.
Therefore, automatic bearing calibration of the projected picture of the projection display of the present invention and device are a kind of full automatic keystone distortion correction method and device, do not need the user to get involved fully, can carry out instant correction program to the distortion of picture at any time.
In sum; though the present invention discloses as above with preferred embodiment; right its is not in order to limit the present invention; any those skilled in the art; without departing from the spirit and scope of the present invention; can do various changes and retouching, so protection scope of the present invention should be with being as the criterion that the claim scope is defined.
Claims (16)
1. the projected picture correcting method of a projection display, in order to an input video signal of video signal is proofreaied and correct, to export a undistorted video image signal, this method comprises:
Detect this projection display with respect to level inclination of a horizontal plane and a vertical dip angle with respect to a vertical plane of vertical this horizontal plane;
Judge whether this level inclination and this vertical dip angle are offset this horizontal plane or this vertical plane, if there is skew then to produce a side-play amount;
By this side-play amount of this level inclination or this vertical dip angle, ask for this side-play amount pairing one trapezoidal correction value of this level inclination or this vertical dip angle; And
According to this level inclination or pairing this trapezoidal correction value of this vertical dip angle side-play amount, with this input video image correction, and should undistorted video image signal projection.
2. the projected picture correcting method of the projection display as claimed in claim 1, wherein this trapezoidal correction value is to be tried to achieve by a correction value question blank.
3. the projected picture correcting method of a projection display, in order to an input video signal of video signal is proofreaied and correct, to export a undistorted video image signal, this method comprises:
Detect this projection display with respect to a storing face or hang one of face put identity distance from, with the vertical dip angle with respect to a vertical plane, wherein this face of hanging is the plane of hanging of fixing this projection display;
Judge this storing identity distance from whether be offset this storing face with this vertical dip angle, this hangs face or this vertical plane, if there is skew then to produce a corresponding side-play amount;
According to this put identity distance from or pairing this side-play amount of this vertical dip angle skew, ask for this storing identity distance from or this vertical dip angle pairing one trapezoidal correction value; And
According to this put identity distance from or pairing this trapezoidal correction value of this vertical dip angle skew, with this input video image correction, and this undistorted video image signal of projection.
4. the projected picture correcting method of the projection display as claimed in claim 3, wherein this trapezoidal correction value is to be tried to achieve by a correction value question blank.
5. the projected picture means for correcting of a projection display, in order to an input video signal of video signal is proofreaied and correct, to export a video image signal of proofreading and correct, this device comprises:
One inclination angle detection device is in order to detect this projection display with respect to level inclination of a horizontal plane and a vertical dip angle with respect to a vertical plane of vertical this horizontal plane; And
One control circuit, be coupled to this inclination angle detection device, in order to receiving this level inclination and this vertical dip angle, and try to achieve a trapezoidal correction value by this level inclination and this vertical dip angle, and this input video signal of video signal proofreaied and correct, export the video image signal of this correction again.
6. the projected picture means for correcting of the projection display as claimed in claim 5 comprises that also a Video Decoder is coupled to this control circuit, in order to receive and this input video signal of video signal of decoding.
7. the projected picture means for correcting of the projection display as claimed in claim 5, also comprise an incoming frame buffer and an output frame buffer, wherein this incoming frame buffer is to be coupled between this Video Decoder and this control circuit, in order to receive decoded this input video signal of video signal and to deposit corresponding coordinate data, and this output frame buffer is to be coupled to this control circuit, in order to receive this undistorted video image signal and to deposit corresponding coordinate data.
8. the projected picture means for correcting of the projection display as claimed in claim 5 also comprises a correction value question blank, in order to storage to should level inclination and the correction value of this vertical dip angle.
9. the projected picture means for correcting of the projection display as claimed in claim 5, wherein this control circuit comprises that also a memory is in order to store a software, to carry out the distortion correction program.
10. the projected picture means for correcting of the projection display as claimed in claim 8, wherein this correction question blank is to be stored in the memory.
11. the projected picture means for correcting of a projection display, in order to an input video signal of video signal is proofreaied and correct, to export a correcting video signal of video signal, this device comprises:
One puts identity distance from detector, in order to detect a storing identity distance that this projection display and a storing face or hang face from, wherein this face of hanging is the plane of hanging of fixing this projection display;
One inclination angle detection device is in order to detect the vertical dip angle of this projection display with respect to a vertical plane; And
One control circuit, be coupled to this storing identity distance from detector and this inclination angle detection device, in order to receive this storing distance and this vertical dip angle, and by this storing identity distance from trying to achieve a trapezoidal correction value with this vertical dip angle, and this input video signal of video signal proofreaied and correct, export the video image signal of this correction again.
12. the projected picture means for correcting of the projection display as claimed in claim 11 comprises that also a Video Decoder is coupled to this control circuit, in order to receive and this input video signal of video signal of decoding.
13. the projected picture means for correcting of the projection display as claimed in claim 12, also comprise an incoming frame buffer and an output frame buffer, wherein this incoming frame buffer is to be coupled between this Video Decoder and this control circuit, in order to receive decoded this input video signal of video signal and to deposit corresponding coordinate data, and this output frame buffer is to be coupled to this control circuit, in order to receive the video image signal after proofreading and correct and to deposit corresponding coordinate data.
14. the projected picture means for correcting of the projection display as claimed in claim 11 also comprises a correction value question blank, in order to storage to should put identity distance from the correction value of this vertical dip angle.
15. the projected picture means for correcting of the projection display as claimed in claim 11, wherein this control circuit comprises that also a memory is in order to store a software, to carry out the distortion correction program.
16. the projected picture means for correcting of the projection display as claimed in claim 11, wherein this correction question blank is to be stored in the memory.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00130653 CN1209914C (en) | 2000-10-09 | 2000-10-09 | Projected picture correcting method and device for projection display |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00130653 CN1209914C (en) | 2000-10-09 | 2000-10-09 | Projected picture correcting method and device for projection display |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1347247A CN1347247A (en) | 2002-05-01 |
| CN1209914C true CN1209914C (en) | 2005-07-06 |
Family
ID=4594229
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00130653 Expired - Fee Related CN1209914C (en) | 2000-10-09 | 2000-10-09 | Projected picture correcting method and device for projection display |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1209914C (en) |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005033703A (en) * | 2003-07-11 | 2005-02-03 | Seiko Epson Corp | System and method for processing image, projector, program, and information storage medium |
| CN100365505C (en) * | 2003-07-17 | 2008-01-30 | 明基电通股份有限公司 | Projecting device with trapezoid correction function |
| US7204596B2 (en) * | 2003-09-19 | 2007-04-17 | Nec Corporation | Projector with tilt angle measuring device |
| US8044880B2 (en) * | 2005-04-28 | 2011-10-25 | Hitachi, Ltd. | Projection type image display device |
| JP5282434B2 (en) * | 2008-04-01 | 2013-09-04 | セイコーエプソン株式会社 | Image processing apparatus, image display apparatus, and image processing method |
| JP5266953B2 (en) * | 2008-08-19 | 2013-08-21 | セイコーエプソン株式会社 | Projection display apparatus and display method |
| CN102238357A (en) * | 2010-04-23 | 2011-11-09 | 富港电子(昆山)有限公司 | System and method for correcting pictures of car headup display |
| TWI432021B (en) * | 2011-01-27 | 2014-03-21 | Altek Corp | Image capturing device and image correction method thereof |
| CN106331549A (en) * | 2015-06-30 | 2017-01-11 | 中强光电股份有限公司 | Projection apparatus |
| CN105954961A (en) * | 2016-05-06 | 2016-09-21 | 联想(北京)有限公司 | Information processing method and projection equipment |
| CN106791745A (en) * | 2016-12-16 | 2017-05-31 | 明基电通有限公司 | A kind of projector's Intelligent Installation accessory system and method |
| CN111294579B (en) * | 2020-02-19 | 2021-12-28 | 母国标 | Method and system for aligning projection picture with curtain center |
-
2000
- 2000-10-09 CN CN 00130653 patent/CN1209914C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1347247A (en) | 2002-05-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1209914C (en) | Projected picture correcting method and device for projection display | |
| TWI249351B (en) | Image processing system, projector, and image processing method | |
| US20020051095A1 (en) | Method and apparatus for automatically correcting projection display of projector | |
| US6939011B2 (en) | Image processing system, projector, program, information storage medium and image processing method | |
| JP2653899B2 (en) | Image correction device | |
| US7266240B2 (en) | Image processing system, projector, computer-readable medium, and image processing method | |
| EP1455528A1 (en) | Image processing system and image processing method | |
| JP3882929B2 (en) | Image processing system, projector, and image processing method | |
| US7204595B2 (en) | Projector and method of correcting projected image distortion | |
| US7070286B2 (en) | Projector with projection lens having a zoom function | |
| US20090009658A1 (en) | Calibrating a projection system | |
| US20110298828A1 (en) | Projection display apparatus | |
| CN1916755A (en) | Projection apparatus and control method thereof | |
| US20100141734A1 (en) | Imaging apparatus and optical axis correction method of imaging apparatus | |
| JPH11341302A (en) | Film scanner | |
| CN1230006C (en) | Method and apparatus for correcting convergence and geometry errors in display devices | |
| JP4474144B2 (en) | Image projection device | |
| JP5110260B2 (en) | Projector, program, information storage medium, and image distortion correction method | |
| US20020113910A1 (en) | Apparatus and method for controlling convergence in projection television | |
| CN1414783A (en) | Projection television outomatic convergence correcting system | |
| US7570258B2 (en) | Method for adjusting the scanning frequency and/or scanning phase of a digital image reproducing device | |
| KR100618975B1 (en) | Apparatus for compensating the shading of displayer and method therefor | |
| JPH085460A (en) | Method and device for detecting luminance and chromaticity of display monitor | |
| CN1529989A (en) | Apparatus and method of re-adjusting convergence of projection TV | |
| KR0173705B1 (en) | Distorted picture correcting apparatus for projector |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Delta Electronics Agent Ltd Assignor: Delta Optoelectronics Inc. Contract fulfillment period: 2008.1.1 to 2013.12.31 Contract record no.: 2009990000376 Denomination of invention: Projected picture correcting method and device for projection display Granted publication date: 20050706 License type: Exclusive license Record date: 20090428 |
|
| LIC | Patent licence contract for exploitation submitted for record |
Free format text: EXCLUSIVE LICENSE; TIME LIMIT OF IMPLEMENTING CONTACT: 2008.1.1 TO 2013.12.31; CHANGE OF CONTRACT Name of requester: ZHONGDA VIDEO SIGNAL (WUJIANG) CO., LTD. Effective date: 20090428 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20050706 Termination date: 20191009 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |