CN1719334A - Datum positioning device and method for color wheel - Google Patents

Abstract

The invention relates to a reference positioning device and a method of a color wheel, wherein the color wheel comprises a plurality of through holes which are arranged at the initial position of each color of the color wheel, a transmitting unit and a receiving unit are arranged at the relative positions of two sides of the color wheel, a unidirectional signal is transmitted by the transmitting unit and passes through the color wheel through the through holes for being received by the receiving unit.

Description

Datum positioning device and method for color wheel

Technical field:

The present invention relates to a positioning device and method, in particular to a reference positioning device and method for a color wheel, which is set through a through hole of the color wheel to position each color of the color wheel.

Background technique:

Press, the projector has been released for many years, because it can be used to display dynamic images or display the display content of the computer with only one device available for projection. Through the projector, it can be enlarged and displayed for many people to watch, or when teaching, the teaching slides stored in the notebook computer can be displayed through the projector for teaching, or when watching videos, it can be used for the public to enjoy big-screen movies, etc. Among them, there is a very important device in the core technology of the projector, that is, the color wheel. If the projector is not equipped with a color wheel, the image displayed by the projector will be a black and white image, and the original color of the image cannot be displayed.

The early color wheel has three primary colors, which are red, green, and blue. The output of the colorful image of the projector needs to be derived from the color overlapping of the three primary colors to obtain the secondary color. Color wheel filtering, through the persistence of vision of the eyes, overlaps the filtering of the three primary colors to achieve a colorful output image seen by the public, but the colorful image will still cause color distortion, that is, the color switching of the color wheel is not synchronized with the image output , causing the tone to lose its accuracy.

Please refer to Fig. 1, it is a preferred embodiment and structural schematic diagram of prior art; Based on above-mentioned situation, prior art is to release the positioning device of this embodiment, and its device comprises a color wheel 10, filters light source, produces colored light ; A sensing unit 12, which emits a one-way signal and receives a reflected one-way signal; a clock mark 14 is a color band that cannot reflect a one-way signal; the sensing unit 12 emits a one-way signal and is sometimes arranged on the color wheel On the rotation path of the pulse mark 14, the clock mark 14 cannot generate a reflected one-way signal after receiving the one-way signal, so that the sensing unit 12 cannot receive the reflected one-way signal, and the clock mark 14 corresponds to Reference point 16 of color wheel 10 .

Based on the above, the positioning method of the positioning device is to detect the clock mark 14 of the color wheel 10 by emitting a one-way signal. The first step is to detect the one-way signal reflected by the color wheel 10. On the rotation path of the mark 14, when the one-way signal is transmitted to the clock mark, the one-way signal cannot be reflected, and the reflected one-way signal cannot be received by the sensing unit 12 to judge the reference point 16 of the color wheel 10, continue The step is to confirm the starting positions of all colors according to the reference point 16 of the color wheel 10 , and the system executes a program code to confirm the starting positions of all colors through the reference point 16 of the color wheel 10 .

The conventional technology can position each color of the color wheel in detail, but the calculation of the position of each color through the execution of the program code by the system will cause errors in the calculation of the position of each color due to the execution of the program code, and it will consume the computing performance of the system, especially Nowadays, in order to improve the performance of the projector, it is necessary to increase the shades of the colors separated by the color wheel, and when the number of colors on the color wheel is large, the system will consume more performance in calculating the position of each color, which leads to the positioning of the color wheel. Processing consumes performance and reduces overall performance.

Based on the above, the present invention proposes a reference positioning device and method for the color wheel, directly through hardware settings without consuming performance on the positioning of the color wheel, and confirms the position of each color by transmitting a signal to pass through the color wheel or not. It is not necessary to know the starting position of each color through calculation.

Invention content:

The main purpose of the present invention is to provide a positioning device and method for a color wheel, which utilizes a color wheel that contains a plurality of colors and is provided with a plurality of penetrating holes with different apertures, and uses a transmitting unit to transmit signals through the color wheel. A plurality of penetrating holes with different apertures are used for detection, so as to locate the color of the color wheel.

The secondary purpose of the present invention is to provide a positioning device and method for a color wheel, which utilizes a plurality of colors on a color wheel and is provided with a plurality of penetrating holes with different radii corresponding to the center of the color wheel, The transmitting unit is used to transmit signals through a plurality of penetration holes of the color wheel for detection, so as to locate the color of the color wheel.

A reference positioning device and method for a color wheel of the present invention, which includes a color wheel, a plurality of penetration holes, a transmitting unit and a receiving unit; The initial positions are provided with penetration holes of different apertures, and the transmitting unit is disposed on one side of the color wheel, so that the transmitted signal passes through one of the penetration holes of the color wheel, and is received by the receiving unit disposed at the opposite position on the other side of the color wheel. signal, to detect whether there is a signal passing through the penetration hole, and according to the signal modulation of the received signal, it is used to confirm the initial position of the multiple colors of the color wheel one by one, and then judge the color wheel by the different apertures of the penetration hole Reference point to confirm the correct switching sequence of colors on the color wheel.

Also, in another reference positioning device and method of the color wheel of the present invention, a plurality of penetrating holes with different radii corresponding to the center of the color wheel are respectively arranged at the color starting positions of the color wheel; The signal needs to pass through the penetration hole of the color wheel for the receiving unit to receive the signal passing through the penetration hole.

Description of drawings:

Fig. 1 is the structural representation of a preferred embodiment of prior art;

Fig. 2 is a flow chart of a preferred embodiment of the present invention;

Fig. 3 is a schematic structural view of a preferred embodiment of the present invention;

Fig. 4 is the flowchart of another preferred embodiment of the present invention;

Fig. 5 is a schematic structural diagram of another preferred embodiment of the present invention.

Brief description of the figure number:

10 color wheel 12 sensing unit 14 clock mark

16 benchmarks 18 motors 20 color wheels

22 penetration holes 24 reference points 26 penetration holes

30 light source 32 transmitting unit 34 receiving unit

36 motor

Implementation method:

In order to enable the examiner to have a further understanding and understanding of the structural features and the achieved effects of the present invention, I would like to provide a preferred embodiment and a detailed description, as follows:

First, please refer to FIG. 2, which is a schematic structural diagram of a preferred embodiment of the present invention; as shown in the figure, the present invention includes a color wheel 20 for receiving a light source 30, and a plurality of colors through the color wheel 20 are separated into multiple The color light of a color; Multiple penetration holes 22 are arranged at the color starting position of color wheel 20; A transmitting unit 32 is arranged on one side of color wheel 20, passes through penetration hole 22 with transmitting unidirectional signal; A receiving unit 34 is arranged On the other side of the color wheel 20, it is used to receive the signal passing through the penetration hole 22 of the color wheel 20, and therefore the transmitting unit 32 and the receiving unit 34 need to be set to the relative position, and the signal is a one-way signal, moreover Can be a light signal.

The penetration hole 22 is the starting position of a plurality of colors corresponding to the color wheel 20 with different apertures. Since the color wheel 20 is driven by the motor 36 to rotate, the light source 30 passes through the rotation path of the color wheel 20 in its light path. One point, and multiple colors are separated by filters of multiple colors, so the penetration hole 22 disposed on the color wheel 20 also rotates with the color wheel 22, and does not affect the color separation of the light source 30 by the color wheel 20.

The one-way signal sent by the emission unit 32 can be a kind of light source, but it is not used for the color wheel 20 to separate colors, but for passing through the penetration hole 22 arranged on the color wheel 20, so that the one-way signal is transmitted from One side of the color wheel 20 is sent to the rotation path of the color wheel 20 provided with the penetration hole 22. If the signal path of the one-way signal passes through the penetration hole 22 of the color wheel 20, the one-way signal can pass through the penetration hole. 22, to reach the other side of the color wheel 20, if the signal route of the one-way signal cannot pass through the penetration hole 22 of the color wheel 20, then the one-way signal is blocked by the color wheel 20, so that it cannot reach the other side of the color wheel 20 side.

The receiving unit 34 is on the other side of the color wheel 20, and on the signal path of the one-way signal, so as to receive the one-way signal passing through the penetration hole 22, if the receiving unit does not receive the one-way signal, it means one-way The signal does not pass through the penetration hole, and the filter of the color wheel 20 is still the color corresponding to the one-way signal passing through the previous penetration hole 22. If the receiving unit 34 receives the one-way signal, it means that the one-way signal is passed through the penetration hole. The through hole 22, and the filter of the color wheel 20 is the initial position of the next color, wherein when the one-way signal passes through the through hole 22 of the largest aperture, the receiving unit 34 receives the longest receiving time of the one-way signal, and can It is thus determined that the one-way signal passing through the through hole 22 with the largest aperture corresponds to the reference point 24 of the color wheel 20 .

Furthermore, please refer to FIG. 3 and refer to FIG. 2, which is a flow chart of a preferred embodiment of the present invention; 22, to confirm the positioning of the color of the color wheel, and the one-way signal is preferably applied with an optical signal. First, in step S1, the one-way signal passing through the penetration hole 22 of the color wheel is detected. If the one-way signal does not pass through Through hole 22, the one-way signal is blocked by the color wheel 20, and the one-way signal cannot be received. If the one-way signal passes through the through hole 22, then the one-way signal is for passing through the initial position corresponding to the next color. The through hole 22 judges whether the color wheel 20 passes through the initial position of the color according to whether the one-way signal is received, so as to distinguish the initial position of each color.

In step S2, the reference point 24 of the color wheel 20 is judged based on the penetration holes 22 of different apertures. In this embodiment, the maximum aperture corresponds to the reference point 24 of the color wheel 20, such as a one-way signal passing through the penetration hole of the maximum aperture 24, then it is judged that the color of the color wheel 20 is switched to the reference point 24 of the color wheel 20; Confirm the color switching sequence of the color wheel 20.

Finally in step S3, after confirming the reference point 24 of the color wheel 20, confirm the signal modulation of the received one-way signal before the one-way signal passes through the reference point 24 of the color wheel 20 next time, such as the signal of the received one-way signal If the adjustment is correct, then there is no need to adjust the color switching timing of the color wheel 20. If the signal modulation of the received one-way signal becomes wrong, it is necessary to adjust the color switching timing of the color wheel 20 so that the signal of the received one-way signal Tuned to correct.

Among them, in step S1, the reception status of the one-way signal is detected, because the one-way signal will be blocked by the color wheel 20, for example, refraction or reflection occurs when the one-way signal is emitted, so that the one-way signal cannot pass through the color wheel 20, here , the one-way signal will be received intermittently, and then the received one-way signal will change intermittently, which can be judged. Then, the reception status of the one-way signal is judged. When the one-way signal passes through the color wheel 20, it passes through When the receiving unit 34 receives it, it will confirm the initial position of a color of the color wheel 20 , and when the receiving unit 34 does not receive the one-way signal, it will confirm that the one-way signal is blocked by the color wheel 20 and is blocked by the through hole 22 . Different apertures lead to different reception times of received one-way signals to determine the starting position allocation of each color.

Continue the above, and go further in step S2, according to the one-way signal passing through the penetration hole 22 of the largest aperture of the color wheel 20, the receiving time of the received one-way signal is the longest receiving time, and the one-way signal received by this The signal is modulated to determine that the received one-way signal corresponds to the reference point 24 of the color wheel 20 .

Finally, in step S3, the color switching timing of the color wheel 20 is judged based on the reference point 24. If the receiving condition of the light signal is correct signal modulation, the step of detecting the light signal passing through the color wheel 20 is continued. , and if the receiving condition of the optical signal is wrong signal modulation, then the color switching timing of the color wheel 20 is changed so that the receiving condition of the optical signal becomes correct signal modulation, and the color wheel 10 can normally switch the color light .

Next, please refer to FIG. 4 , which is a schematic structural view of another preferred embodiment of the present invention; as shown in the figure, the present invention can further arrange a plurality of penetration holes 26 corresponding to different radii of the center of the color wheel 20, namely The distance from the center of the color wheel 20 is different; the transmitting unit 32 is arranged on one side of the color wheel 20, and transmits a one-way signal through the penetration holes 26 at different heights of the color wheel 20; The one-way signal on the other side of the wheel 20; and the one-way signal is a light signal.

Different height positions of the penetration holes 26 represent multiple colors of the color wheel 20, and in this embodiment, the highest position represents the reference point 24 of the color wheel 20, and the penetration holes 26 below the next highest position represent the color wheel 20. Other colors than fiducial point 24.

The one-way signal emitted by the transmitting unit 32 passes through the penetration holes 26 at different heights for the receiving unit 32 to judge the initial color position of the color wheel 20 according to the detected heights.

Finally, please refer to Fig. 5 and refer to Fig. 4, which is a flow chart of another preferred embodiment of the present invention; The penetration hole 26 at the radial position is used for confirming the color positioning of the color wheel. First, in step S11, the one-way signal passing through the penetration hole 26 corresponding to the different radius of the center of the color wheel is detected to receive the signal corresponding to the The one-way signal of the penetrating hole 26 at different radial positions in the center of the color wheel is used to determine the color starting position of the color wheel 20. If the one-way signal does not pass through the penetrating hole 26, the color wheel 20 is not switched to the next position. For the starting position of the color, if the one-way signal passes through the through hole 26 , then the starting position of the color corresponding to the color wheel 20 of the through hole 26 is determined according to the positions of the different radii of the through hole 26 .

Also in step S12, it is to confirm the reference point 24 of the color wheel 26 according to the position of the different radius of the penetration hole 26 through which the one-way signal passes. In this embodiment, the highest position of the different radius corresponds to the reference point of the color wheel 20 At point 24 , if the one-way signal passes through the hole 26 at the highest position with different radii, it is judged that the color wheel 20 is switched to a color starting position, which is the reference point 24 of the color wheel 20 .

The final step S13 is to confirm whether the signal modulation of the received one-way signal is correct when the one-way signal passes through the reference point 24 of the color wheel 20 next time after confirming the reference point 24 of the color wheel 20 .

Wherein in step S11, it detects the one-way signal passing through the penetration hole 26 of the color wheel 20, and the one-way signal is a light signal, and the penetration hole 26 of the color wheel 20 is not still on the original position when rotating, Therefore, it will cause the light signal to be emitted to the mirror surface of the color wheel 20, and the effect of light refraction or light reflection will be produced. Therefore, if there is signal modulation in the reception of the one-way signal, the color wheel 20 will be judged for the modulation of the one-way signal. The switching status of the through holes 26, that is, the switching status of the initial positions of each color of the color wheel 20.

Then in step S12, the reference point 24 of the color wheel 20 is judged according to the positions of the different radii of the penetration holes 26. position, so that the distribution of each color of the color wheel 20 can be confirmed, and the penetration hole 26 at the highest position with different radii is the reference point 24 of the color wheel 20, so that the reception of the one-way signal can be carried out through the reference point 24. judge.

The above two embodiments only need to use the hardware to detect the change of the one-way signal, and through the signal modulation of the received one-way signal, the hardware can confirm the start of each color of the color wheel 20 through the signal modulation. The position of each color of the color wheel 20 does not need to be calculated by the central processing unit, so that the computing performance of the central processing unit can be improved.

In a word, a reference positioning device and method for a color wheel of the present invention include a color wheel, a plurality of penetration holes, a transmitting unit, and a receiving unit; the color wheel is a filter for separating the colored light of the light source, and The plurality of penetration holes correspond to the initial positions of the colors of the color wheel with different apertures, so that the one-way signal emitted by the emission unit arranged on one side of the color wheel passes through the penetration holes of different apertures and passes through the other side of the color wheel. The receiving unit on the side receives the one-way signal through the penetration holes of different apertures, and detects according to the signal modulation of the one-way signal received by the receiving unit to locate the color of the color wheel, and passes through the penetration hole According to the different apertures, the penetration hole with the largest aperture is judged as the reference point of the color wheel, so as to confirm the color switching timing of the color wheel.

Another reference positioning device and method for the color wheel of the present invention is changed to a plurality of penetration holes respectively provided with different radius positions corresponding to the center of the color wheel to represent the initial positions of the plurality of colors of the color wheel, by The one-way signal emitted by the transmitting unit passes through the penetration holes at different radial positions for the receiving unit to receive for detection to confirm the color positioning of the color wheel, passing through the different radius positions of the penetration holes, It is judged that the penetration hole at the highest position is the reference point of the color wheel, so as to confirm the correct switching sequence of the colors of the color wheel.

The above is only a preferred embodiment of the present invention, and is not used to limit the scope of the present invention. All changes and modifications such as shapes, structures, features and principles described in the scope of the patent application for the present invention shall be Included in the patent scope of the present invention.

Claims (18)

1. A reference positioning device for a color wheel, comprising: A color wheel, provided with a plurality of colors; A plurality of penetrating holes are arranged at the initial positions of the plurality of colors of the color wheel with different apertures; a transmitting unit, arranged on one side of the color wheel, emits a signal which passes through the color wheel through the penetration hole; A receiving unit is arranged on the other side of the color wheel and opposite to the emitting unit for receiving the signal passing through the through hole. 2. The reference positioning device for a color wheel as described in claim 1 of the patent application, wherein the penetration hole is set as a reference point for one of the colors of the color wheel with the largest aperture. 3. The method for judging the reference of the color wheel as described in item 1 of the scope of the patent application, wherein the signal is a one-way signal. 4. A reference positioning method of a color wheel, which is used to transmit a signal through one of the plurality of penetration holes of different apertures of a color wheel. The reference positioning method of the color wheel includes: Detecting the signal passing through the penetration hole to determine the initial position of each color of the color wheel; The position of a reference point of the color wheel is determined according to the different diameters of the through holes. 5. The reference positioning method of the color wheel as described in item 4 of the scope of the patent application, wherein the signal can be a one-way signal. 6. The reference positioning method of the color wheel as described in item 4 of the scope of the patent application, wherein after the step of confirming the position of a reference point of the color wheel, it confirms that the signal modulation of the signal received is correct, and after confirming Thereafter, the step of detecting the signal across the color wheel is performed. 7. The reference positioning method of the color wheel as described in item 6 of the scope of the patent application, wherein in the step of confirming that the signal modulation of the received one-way signal is correct, if the signal modulation of the received signal is incorrect, Then readjust the color switching timing of the color wheel, so that the signal tone of the received signal becomes correct. 8. A reference positioning device for a color wheel, comprising: A color wheel, provided with a plurality of colors; A plurality of penetration holes are arranged at the initial positions of the plurality of colors of the color wheel; A transmitting unit, arranged on one side of the color wheel, emits a signal that passes through the color wheel through the through hole; A receiving unit is arranged on the other side of the color wheel, opposite to the emitting unit, for receiving the signal passing through the through hole. 9. The reference positioning device for a color wheel as described in claim 8 of the patent application, wherein the penetration holes are arranged at the starting positions of the colors corresponding to the different radii of the center of the color wheel. 10. The method for judging the reference of a color wheel as described in item 8 of the scope of the patent application, wherein the signal is a one-way signal. 11. A reference positioning method of a color wheel, which is used to locate a color of a color wheel by transmitting a signal through one of the plurality of penetration holes of a color wheel. The reference positioning method of the color wheel includes: The one-way signal passing through the color wheel is detected to determine the initial position of each color of the color wheel. 12. The reference positioning method of the color wheel as described in item 11 of the scope of the patent application, wherein the signal can be a one-way signal. 13. The reference positioning method for a color wheel as described in claim 11 of the patent application, wherein the penetration holes are arranged at positions with different radii corresponding to the center of the color wheel. 14. The reference positioning method of the color wheel as described in claim 13 of the patent application, wherein the height position of the penetration hole corresponds to the initial position of each color of the color wheel. 15. The reference positioning method of the color wheel as described in item 11 of the scope of patent application, wherein the step of judging the initial position of each color of the color wheel further includes a step of confirming a reference of the color wheel point location. 16. The reference positioning method of the color wheel as described in item 15 of the scope of the patent application, wherein after the step of confirming the position of a reference point of the color wheel, it confirms that the signal tone of the received signal is correct, and after confirming Afterwards, the step of detecting the one-way signal passing through the color wheel is performed. 17. The reference positioning method of the color wheel as described in item 16 of the scope of the patent application, wherein in the step of confirming that the signal modulation of the received one-way signal is correct, if the signal modulation of the received signal is incorrect, Then readjust the color switching timing of the color wheel, so that the signal tone of the received one-way signal becomes correct. 18. A reference positioning device for a color wheel, comprising: A color wheel is provided with a plurality of colors, and the color wheel is rotated by a motor; A penetration hole is arranged on the color wheel, and the position of the penetration hole is the starting position of one of the colors of the color wheel; A transmitting unit, arranged on one side of the color wheel, emits a signal that passes through the color wheel through the through hole, and the signal is a one-way signal; A receiving unit is arranged on the other side of the color wheel, opposite to the emitting unit, for receiving the signal passing through the through hole.

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