WO2019006982A1 - 一种投影仪控制系统及控制方法 - Google Patents
一种投影仪控制系统及控制方法 Download PDFInfo
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- WO2019006982A1 WO2019006982A1 PCT/CN2017/114711 CN2017114711W WO2019006982A1 WO 2019006982 A1 WO2019006982 A1 WO 2019006982A1 CN 2017114711 W CN2017114711 W CN 2017114711W WO 2019006982 A1 WO2019006982 A1 WO 2019006982A1
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- color wheel
- module
- light source
- speed value
- dlp
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Classifications
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B26/00—Optical devices or arrangements for the control of light using movable or deformable optical elements
- G02B26/007—Optical devices or arrangements for the control of light using movable or deformable optical elements the movable or deformable optical element controlling the colour, i.e. a spectral characteristic, of the light
- G02B26/008—Optical devices or arrangements for the control of light using movable or deformable optical elements the movable or deformable optical element controlling the colour, i.e. a spectral characteristic, of the light in the form of devices for effecting sequential colour changes, e.g. colour wheels
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/14—Details
- G03B21/20—Lamp housings
- G03B21/2053—Intensity control of illuminating light
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/14—Details
- G03B21/20—Lamp housings
- G03B21/206—Control of light source other than position or intensity
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B33/00—Colour photography, other than mere exposure or projection of a colour film
- G03B33/08—Sequential recording or projection
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/12—Picture reproducers
- H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
- H04N9/3102—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM] using two-dimensional electronic spatial light modulators
- H04N9/3111—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM] using two-dimensional electronic spatial light modulators for displaying the colours sequentially, e.g. by using sequentially activated light sources
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/12—Picture reproducers
- H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
- H04N9/3102—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM] using two-dimensional electronic spatial light modulators
- H04N9/3111—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM] using two-dimensional electronic spatial light modulators for displaying the colours sequentially, e.g. by using sequentially activated light sources
- H04N9/3114—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM] using two-dimensional electronic spatial light modulators for displaying the colours sequentially, e.g. by using sequentially activated light sources by using a sequential colour filter producing one colour at a time
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/12—Picture reproducers
- H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
- H04N9/3102—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM] using two-dimensional electronic spatial light modulators
- H04N9/3111—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM] using two-dimensional electronic spatial light modulators for displaying the colours sequentially, e.g. by using sequentially activated light sources
- H04N9/3117—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM] using two-dimensional electronic spatial light modulators for displaying the colours sequentially, e.g. by using sequentially activated light sources by using a sequential colour filter producing two or more colours simultaneously, e.g. by creating scrolling colour bands
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/12—Picture reproducers
- H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
- H04N9/3141—Constructional details thereof
- H04N9/315—Modulator illumination systems
- H04N9/3155—Modulator illumination systems for controlling the light source
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/12—Picture reproducers
- H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
- H04N9/3191—Testing thereof
- H04N9/3194—Testing thereof including sensor feedback
Definitions
- the present invention relates to the field of projection technology, and in particular, to a projector control system and a control method.
- the current DLP (Digital Light Processing) digital optical processing technology projector is a light source system using a color wheel color mixing method, and the light source sequentially projects a red picture, a green picture and a blue picture through a color wheel to perform color mixing. To form a color picture.
- the color quality of the final image of the projector is determined by the intensity of the light source that is incident on the color wheel. As the power requirements of the light source system become larger and larger, various high-power light sources continue to emerge, making the color in the light source system
- the wheel receives more and more light energy. When the color wheel is in high-speed motion, the light energy in the unit turns is not concentrated in a fixed segment.
- the main technical problem to be solved by the present invention is to provide a projector control system and a control method, which can dynamically adjust different signals from the main controller according to the actual rotational speed of the color wheel to ensure the safety and imaging of the color wheel of the projector. effect.
- a technical solution adopted by the present invention is: Providing a control system for a projector, the control system including a main controller, a dynamic current adjustment module, a color wheel controller, and color wheel rotation feedback Module, light source;
- the dynamic current adjustment module includes a DLP module, a light source controller, and a power module; [0008] the color wheel controller controls the rotation of the color wheel according to the control signal of the DLP module, and the color wheel rotation speed feedback module generates a feedback signal including the actual rotation speed value of the color wheel;
- the DLP module receives the feedback signal sent by the color wheel rotation speed feedback module
- the main controller sends a dynamic brightness information to the DLP module, where the dynamic brightness information sent by the main controller includes brightness information of the light source;
- the DLP module receives dynamic brightness information of the main controller and sends a processed dynamic brightness information and a control signal to the light source controller according to the feedback signal of the color wheel rotation feedback module, wherein the D
- the processed dynamic brightness information sent by the LP module includes brightness information of the light source and sequence control information matched with the color wheel segment;
- the light source controller controls the power module to switch the power supply according to the processed dynamic brightness information and the control signal sent by the received DLP module, and outputs a corresponding current value
- the power module drives the light source to emit light according to the corresponding current value of the output.
- the present invention further provides a control system for a projector, the control system including a main controller, a color wheel protection and a dynamic current adjustment module, a color wheel controller, and a light source;
- the color wheel protection and dynamic current adjustment module comprises a DLP module, a light source controller, a color wheel rotation feedback module and a power module;
- the color wheel controller controls the rotation of the color wheel according to the control signal of the DLP module, and the color wheel rotation speed feedback module generates a feedback signal including the actual rotation speed value of the color wheel after the color wheel rotates;
- the DLP module and the light source controller receive a feedback signal sent by the color wheel rotation speed feedback module
- the main controller sends a dynamic brightness information to the DLP module, where the dynamic brightness information sent by the main controller includes brightness information of the light source;
- the DLP module receives dynamic brightness information of the main controller and sends a processed dynamic brightness information and a control signal to the light source controller according to the feedback signal of the color wheel rotation feedback module, wherein the DLP module
- the processed processed dynamic brightness information includes brightness information of the light source and sequence control information matched with the color wheel segment;
- the light source controller achieves the actual speed value of the color wheel in the feedback signal up to the standard, and then controls the power module to power the power according to the processed dynamic brightness information and the control signal sent by the received DLP module. And output corresponding current value; [0021] wherein the power module drives the light source to emit light according to the corresponding current value of the output.
- the present invention further provides a control method of a projector, the control method including a main controller, a dynamic current adjustment module, a color wheel controller, a color wheel rotation speed feedback module, and a light source;
- the dynamic current adjustment module includes a DLP module, a light source controller, and a power module;
- the color wheel controller controls the rotation of the color wheel according to the control signal of the DLP module, and the color wheel rotation speed feedback module generates a feedback signal including the color wheel actual speed value after the color wheel rotates;
- the DLP module receives the feedback signal, and the DLP module determines whether the color wheel rotational speed value included in the feedback signal exceeds a preset color wheel rotational speed value; when the color wheel actual rotational speed value exceeds a system preset The color wheel rotational speed value ⁇ , the DLP module sends a processed dynamic brightness information and a control signal to the light source controller, and the light source controller controls the power module to switch the power supply according to the received control signal and outputs the corresponding
- the processed dynamic brightness information sent by the DLP module includes brightness information of the light source and sequence control information matched with the color wheel segment, and the power module drives the light source to emit light according to the corresponding current value of the output.
- the DLP module sends a control signal to the color wheel controller to adjust the color wheel rotation until the actual color wheel speed exceeds the system preset.
- the color wheel speed value is a value that specifies the color wheel speed of the system.
- the present invention further provides a control method of a projector, the control method including a main controller, a color wheel protection and a dynamic current adjustment module, a color wheel controller, and a light source;
- the color wheel protection and dynamic current adjustment module comprises a DLP module, a light source controller, a color wheel rotation feedback module and a power module;
- the color wheel controller controls color wheel rotation according to a control signal of the DLP module, and the color wheel speed feedback module generates a feedback signal including a color wheel actual speed value;
- the DLP module and the light source controller both receive the feedback signal, and determine whether the color wheel rotation speed value included in the feedback signal exceeds a preset color wheel rotation speed value of the system;
- the DLP module determines that the actual color wheel speed value exceeds the system preset color wheel speed value ⁇ , the DLP module sends a processed dynamic brightness information and a control signal to the light source controller;
- the DLP module determines that the actual color wheel speed value does not exceed the system preset color wheel speed value, the DL
- the P module sends a control signal to the color wheel controller to adjust the color wheel rotation until the actual color wheel speed value exceeds The preset color wheel speed value of the system;
- the light source controller determines that the actual color wheel speed value exceeds the preset color wheel speed value ⁇ , the light source controller controls the power module to switch the power supply according to the received control signal and outputs a corresponding current value;
- the light source controller determines that the actual color wheel speed value does not exceed the preset color wheel speed value of the system, the light source controller controls the power module to maintain the closed state;
- the power module drives the light source to emit light according to the corresponding current value of the output
- the processed dynamic brightness information sent by the DLP module includes brightness information of the light source and sequence control information matching the color wheel segment.
- the dynamic current adjustment module passes the actual rotation speed information of the feedback color wheel through the color wheel rotation speed feedback module, and the DLP module adjusts the sequence control information of each dynamic brightness information according to the actual rotation speed information of the color wheel to make the DLP
- the inter-turn interval of the module emitting different dynamic brightness information matches the actual speed of the color wheel, thereby ensuring the imaging effect of the projector, and also avoiding local damage of the color wheel.
- FIG. 1 is a schematic block diagram of a projector including a control system in accordance with an embodiment of the present invention
- FIG. 2 is a schematic block diagram of a projector including a control system according to another embodiment of the present invention.
- FIG. 3 is a flowchart showing the operation of a control method corresponding to the projector of the embodiment of FIG. 1;
- FIG. 4 is a flowchart showing the operation of a control method corresponding to the projector of the embodiment of FIG. 2.
- a projector control system provided by the present invention is applied to a projector.
- the control system 100 includes: a main controller 10, a dynamic current adjustment module 90, a color wheel controller 30, a color wheel rotation speed feedback module 40, Light source 70.
- the dynamic current adjustment module 90 includes a DLP module 20, a light source controller 50, and a power module 60.
- the main controller 10 is configured to transmit the target rotational speed information and the dynamic luminance information (ie, luminance information having different luminance values) to the DLP module 20.
- the DLP module 20 generates a control signal based on the target rotational speed information and transmits it to the color wheel controller 30.
- the user generates the processed dynamic brightness information according to the dynamic brightness information sent by the main controller 10 and the feedback signal including the actual color wheel speed value issued by the color wheel speed feedback module 40 (dynamically, respectively, corresponding to different brightness values of different brightness values)
- the information is transmitted to the light source controller 50, and the processed dynamic brightness information includes brightness information of the light source and sequence control information matching the color wheel segment according to the actual color wheel speed.
- the color wheel controller 30 controls the color wheel 80 to rotate at a constant speed in accordance with a control signal.
- the color wheel rotation speed feedback module 40 feeds back the actual rotation speed information of the color wheel. Specifically, in this embodiment, the color wheel rotation speed feedback module 40 feeds back the actual rotation speed information of the color wheel 80 to the DLP module 20, so that the DLP module 20 adjusts the sequence control information according to the actual rotation speed information, so that the DLP module 20 issues the processed.
- the inter-turn interval of the dynamic brightness information matches the segment of the color wheel.
- the light source controller 50 controls the power module 60 to output a corresponding current value according to the processed dynamic brightness information transmitted from the DLP module 20 to drive the light source 70 to emit light.
- the dynamic brightness information (luminance information of the brightness value change) emitted by the main controller 10 corresponds to the plurality of color wheel regions on the color wheel 80, respectively.
- the DLP module 20 issues the inter-turn interval of the processed luminance information according to different luminance information such that the processed luminance information has a one-to-one correspondence with a certain one of the plurality of regions of the color wheel.
- the color wheel includes an A area and a B area, and the DLP module 20 emits the first processed brightness information corresponding to the color wheel A area to the area corresponding to the color wheel B.
- the inter-time interval of the second processed luminance information is that the DLP module 20 emits the first processed luminance information corresponding to the color wheel A region to the light source controller 50, and the light source controller 50 controls the power according to the received luminance information.
- the module 60 outputs a corresponding current value. Since the light-emitting brightness of the light source is controlled by the magnitude of the current value emitted by the power module 60, the power module 60 drives the light source 70 to emit light according to the corresponding current value of the output, and an initial light acts on the A1 of the A region.
- the needle of the color wheel 80 rotates (in other embodiments, the color wheel 80 can also be rotated by the reverse needle), the action position of the light moves from A1 to A2.
- the intensity of the light acting in the A region is unchanged, and the intensity of the light is determined by the first processed brightness information, and the length of the light acting on the A1 to the light at the A2 is exactly equal to T, that is, The current value emitted by the power module 60 does not change during the inter-turn interval.
- the DLP module 20 emits a corresponding color wheel area ⁇
- the second processed luminance information, the magnitude of the light intensity acting on the B region is determined by the second processed luminance information, and the length of the light at the intensity acting on the B region is exactly equal to the second length of the DLP module 20
- the processed luminance information is sent to the DLP module 20 to issue the inter-turn interval of the next processed luminance information, that is, the current value emitted by the power module 60 does not change during this inter-turn interval.
- the projector control system implements the actual rotation speed information of the feedback color wheel 80 through the color wheel rotation speed feedback module 40, and the DLP module 20 actually transmits different signals to the DLP module 20 according to the actual rotation speed of the color wheel 80.
- the inter-turn interval of the processed luminance information is ensured to match the actual rotational speed of the color wheel 80 such that the area of the light source 70 that acts according to each processed luminance information corresponds to the corresponding color on the color wheel 80.
- the current value of the power module 60 is the same during each turn interval to achieve the purpose of current dynamic adjustment, thereby ensuring imaging of the projector. effect.
- the DLP module 20 can dynamically adjust the current level of the power module 60 corresponding to each turn of the color wheel rotation.
- the current level of the corresponding power module 60 changes every one rotation of the color wheel 80.
- the current level of the power module 60 corresponding to each rotation of the color wheel is changed once.
- the DLP module 20 emits brightness information corresponding to the processed color wheel to the light source controller 50 for each complete rotation of the color wheel, and the light source controller 50 controls the power module 60 to output a corresponding current value, due to the light source.
- the brightness of the light is controlled by the power module 60, and the light source 70 emits light according to the corresponding current level to achieve the purpose of dynamic current adjustment, thereby ensuring the imaging effect of the projector.
- the DLP module 20 determines whether the actual color wheel speed value included in the feedback signal is greater than or equal to the preset color wheel speed value of the system, and if so, the DLP module 20 sends a control to the light source controller 50.
- the power module 60 can be prevented from being slammed when the rotation speed of the color wheel 80 is not up to the standard, so as to prevent the rotation speed of the color wheel 80 from being too slow, and the light illuminating a certain area of the color wheel 80 is too long. Burn the color wheel 80.
- the color wheel rotation feedback module 40 sends a feedback signal including the actual speed value of the color wheel.
- the color wheel can also rotate a half turn, or two turns, or other predetermined number of turns to periodically send a feedback signal including the actual speed value of the color wheel.
- the dynamic adjustment function is a color wheel protection and dynamic current adjustment module 90a.
- the color wheel protection and dynamic current adjustment module 90a includes a DLP module 20a and a light source controller 50a. The color wheel rotates the feedback module 40a and the power module 60a.
- the color wheel rotation speed feedback module 40a not only feeds back the actual rotation speed information of the color wheel to the DLP module, but further feeds back the actual rotation speed information of the color wheel 80a to the light source controller 50a, and the light source controller 50a. Determining whether the actual rotation speed of the color wheel 80a reaches the preset rotation speed standard according to the actual rotation speed information, and generating the driving current value in the same control power supply module 60a that reaches the rotation speed standard and the DLP module 20a outputs the processed dynamic brightness information, in the protection color Under the premise of wheel safety, the purpose of dynamic adjustment of a current is realized, thereby ensuring the imaging effect of the projector.
- the DLP module 20a and the light source controller 50a determine that the actual color wheel speed value does not exceed the preset color wheel speed value of the system, and the power module 60a does not slam the power supply.
- the power supply of the power module is separately controlled. This embodiment can play the role of double protection, and the power supply of the power module is not damaged due to the abnormality of the system of the DLP module. Damage to the color wheel.
- the feedback signal includes the color wheel actual speed value greater than or equal to the system preset color wheel speed value, indicating that the speed standard is reached, wherein under normal circumstances, the DLP module and The color wheel speed values preset by the system in the light source controller are the same, but the system preset color wheel speed values in the DLP module and the light source controller may also be different.
- the present invention also provides a projector control method, in conjunction with FIG. 1 and FIG. 3, the control method includes a main controller 10, a dynamic current adjustment module 90, a color wheel controller 30, a color wheel rotation speed feedback module 40, Light source 70;
- the dynamic current adjustment module 90 includes a DLP module 20, a light source controller 50, and a power module 60;
- the color wheel controller 30 controls the color wheel 80 to rotate according to the control signal of the DLP module 20, and the color wheel speed feedback module 40 generates a feedback signal including the color wheel actual speed value;
- the DLP module 20 receives the feedback signal, and the DLP module 20 determines whether the color wheel rotation speed value included in the feedback signal exceeds the preset color wheel speed value of the system; when the actual color wheel speed value exceeds the system preset color wheel speed value. D, the DLP module 20 sends a processed dynamic brightness information and a control signal to the light source controller 50, and the light source controller 50 controls the power module 60 to switch the power supply according to the received control signal and output a corresponding current value, DLP.
- the processed dynamic brightness information sent by module 20 includes brightness information and color of the light source.
- the wheel segment matches the sequence control information, and the power module 60 drives the light source 70 to emit light according to the corresponding current value output.
- the main controller 10 sends a dynamic brightness information to the DLP module 20, and the dynamic brightness information sent by the main controller includes brightness information of the light source.
- the DLP module 20 is directed to the color wheel controller
- the dynamic adjustment function is a color wheel protection and dynamic current adjustment module 90a
- the color wheel protection and dynamic current adjustment module 90a includes DLP.
- the difference between the present embodiment and the previous embodiment is that the DLP module 20a and the light source controller 50a both receive the feedback signal from the color wheel rotation feedback module 40a, and both determine whether the color wheel rotation speed value included in the feedback signal exceeds the system.
- the preset color wheel speed value when the DLP module 20a determines that the color wheel actual speed value exceeds the system preset color wheel speed value ⁇ , the DLP module sends a processed dynamic brightness information and control signal to the light source controller 50a. ;
- the DLP module 20a determines that the actual color wheel speed value does not exceed the system preset color wheel speed value ⁇ , the DLP module 20a sends a control signal to the color wheel controller 30a to adjust the color wheel rotation until the color The actual wheel speed value exceeds the preset color wheel speed value of the system;
- the light source controller 50a determines that the actual color wheel speed value exceeds the system preset color wheel speed value ⁇ , the light source controller 50a controls the power module 60a to switch the power supply according to the received control signal and output the corresponding Current value;
- the light source controller 50a determines that the color wheel actual speed value does not exceed the system preset color wheel speed value ⁇ , the light source controller 50a controls the power module 60a to remain in the off state.
- the DLP module 20a sends a control signal to the color wheel controller 30a to adjust the color wheel 80a to rotate until the color wheel The actual speed value exceeds the system preset color wheel speed value.
- the light source controller 50a does not control the power module 60a to output a corresponding current value, and the light source 70a maintains the off state, such that the setting can be performed on the color wheel 80a.
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Abstract
一种投影仪的控制系统(100)及其对应的控制方法。该系统(100)包括主控制器(10)、动态电流调节模块(90)、色轮控制器(30)、色轮转速反馈模块(40)、光源(70);动态电流调节模块(90)包括DLP模块(20)、光源控制器(50)及电源模块(60);色轮转速反馈模块(40)产生一反馈信号;DLP模块(20)接收反馈信号,DLP模块(20)接收动态亮度信息并根据反馈信号向光源控制器(50)发送一经处理的动态亮度信息和控制信号;光源控制器(50)根据接收到的DLP模块(20)发出的经处理的动态亮度信息和控制信号控制电源模块(60)打开电源开关并输出相应的电流值。以上方案使得DLP模块(20)发出不同动态亮度信息的时间间隔与色轮(80)的实际转速匹配,进而确保投影仪的成像效果。
Description
一种投影仪控制系统及控制方法 技术领域
[0001] 本发明涉及投影技术领域, 特别是涉及一种投影仪控制系统及控制方法。
背景技术
[0002] ¾
[0003] 目前的 DLP(Digital Light Processing)数字光学处理技术投影仪是采用吋序式色 轮混色法的光源系统, 光源依序透过色轮投影出红色画面、 绿色画面与蓝色画 面进行混色以形成彩色画面。 投影仪最终成像的画面色彩质量由照射到色轮上 的光源强度来决定的, 随着市场对光源系统的功率要求越来越大, 各种高功率 的光源不断涌现, 使光源系统中的色轮接收越来越大的光能量, 当色轮处于高 速运动吋, 单位吋间内这些光能量不会集中聚集在一固定分段。
技术问题
[0004] 但若出现意外, 例如光机系统出现故障等原因, 使色轮突然停转或转速显著降 低吋, 单位吋间内这些光能量将使色轮因局部聚集过高热量而烧毁。 另外当色 轮的转动速度产生变化吋, 主控制器件的动态调控不及吋, 导致色轮的转速与 主控制器发出不同信号的吋间间隔不匹配, 色轮部分特定区域接收光线强度发 生改变, 从而导致成像效果不佳。
问题的解决方案
技术解决方案
[0005] 本发明主要解决的技术问题是提供一种投影仪控制系统及控制方法, 能够实吋 根据色轮的实际转速动态调整主控制器发出不同信号, 以确保投影仪色轮的安 全和成像效果。
[0006] 为解决上述技术问题, 本发明采用的一个技术方案是: 提供一种投影仪的控制 系统, 所述控制系统包括主控制器、 动态电流调节模块、 色轮控制器、 色轮转 动反馈模块、 光源;
[0007] 所述动态电流调节模块包括 DLP模块、 光源控制器、 及电源模块;
[0008] 所述色轮控制器根据 DLP模块的控制信号控制色轮转动, 所述色轮转速反馈模 块产生一包括色轮实际转速值的反馈信号;
[0009] 所述 DLP模块接收所述色轮转速反馈模块发出的所述反馈信号;
[0010] 所述主控制器向所述 DLP模块发送一动态亮度信息, 其中所述主控制器发送的 动态亮度信息包括光源的亮度信息;
[0011] 所述 DLP模块接收主控制器的动态亮度信息并根据所述色轮转动反馈模块的反 馈信号向所述光源控制器发送一经处理的动态亮度信息及控制信号, 其中所述 D
LP模块发送的经处理的动态亮度信息包括光源的亮度信息及与色轮区段匹配的 吋序控制信息;
[0012] 其中所述光源控制器根据接收到的 DLP模块发出的经处理的动态亮度信息和控 制信号控制电源模块打幵电源幵关并输出相应的电流值;
[0013] 其中所述电源模块根据输出的相应电流值驱动光源发光。
[0014] 为了解决以上技术问题, 本发明还提供一种投影仪的控制系统, 所述控制系统 包括主控制器、 色轮保护及动态电流调节模块、 色轮控制器、 光源;
[0015] 所述色轮保护及动态电流调节模块包括 DLP模块、 光源控制器、 色轮转动反馈 模块及电源模块;
[0016] 所述色轮控制器根据 DLP模块的控制信号控制色轮转动, 所述色轮转速反馈模 块在所述色轮转动后产生一包括色轮实际转速值的反馈信号;
[0017] 所述 DLP模块及所述光源控制器接收所述色轮转速反馈模块发出的反馈信号;
[0018] 所述主控制器向所述 DLP模块发送一动态亮度信息, 其中所述主控制器发送的 动态亮度信息包括光源的亮度信息;
[0019] 所述 DLP模块接收主控制器的动态亮度信息并根据所述色轮转动反馈模块的反 馈信号向所述光源控制器发送一经处理的动态亮度信息及控制信号, 其中所述 D LP模块发送的经处理的动态亮度信息包括光源的亮度信息及与色轮区段匹配的 吋序控制信息;
[0020] 其中所述光源控制器在所述反馈信号中的色轮实际转速值达标吋, 再根据接收 到的 DLP模块发出的经处理的动态亮度信息和控制信号控制电源模块打幵电源幵 关并输出相应的电流值;
[0021] 其中所述电源模块根据输出的相应电流值驱动光源发光。
[0022] 为了解决以上技术问题, 本发明还提供一种投影仪的控制方法, 所述控制方法 包括主控制器、 动态电流调节模块、 色轮控制器、 色轮转速反馈模块、 光源;
[0023] 所述动态电流调节模块包括 DLP模块、 光源控制器、 及电源模块;
[0024] 所述色轮控制器根据 DLP模块的控制信号控制色轮转动, 所述色轮转速反馈模 块在所述色轮转动后产生一包括色轮实际转速值反馈信号;
[0025] 所述 DLP模块接收所述反馈信号, DLP模块判断所述反馈信号包含的色轮转速 值是否超过系统预设的色轮转速值; 当所述色轮实际转速值超过系统预设的色 轮转速值吋, 所述 DLP模块向所述光源控制器发送一经处理的动态亮度信息和控 制信号, 所述光源控制器根据接收到的控制信号控制电源模块打幵电源幵关并 输出相应的电流值, 所述 DLP模块发送的经处理的动态亮度信息包括光源的亮度 信息及与色轮区段匹配的吋序控制信息, 所述电源模块根据输出的相应电流值 驱动光源发光。
[0026] 当色轮实际转速值未超过系统预设的色轮转速值吋, 所述 DLP模块向色轮控制 器发出控制信号调整所述色轮转动, 直至色轮实际转速值超过系统预设的色轮 转速值。
[0027] 为了解决以上技术问题, 本发明还提供一种投影仪的控制方法, 所述控制方法 包括主控制器、 色轮保护及动态电流调节模块、 色轮控制器、 光源;
[0028] 所述色轮保护及动态电流调节模块包括 DLP模块、 光源控制器、 色轮转动反馈 模块及电源模块;
[0029] 所述色轮控制器根据 DLP模块的控制信号控制色轮转动, 所述色轮转速反馈模 块产生一包括色轮实际转速值反馈信号;
[0030] 所述 DLP模块和所述光源控制器均接收所述反馈信号, 均判断所述反馈信号包 含的色轮转速值是否超过系统预设的色轮转速值;
[0031] 当 DLP模块判断所述色轮实际转速值超过系统预设的色轮转速值吋, DLP模块 向所述光源控制器发送一经处理的动态亮度信息和控制信号;
[0032] 当 DLP模块判断所述色轮实际转速值未超过系统预设的色轮转速值吋, 所述 DL
P模块向色轮控制器发出控制信号调整所述色轮转动, 直至色轮实际转速值超过
系统预设的色轮转速值;
[0033] 当光源控制器判断所述色轮实际转速值超过系统预设的色轮转速值吋, 光源控 制器根据接收到的控制信号控制电源模块打幵电源幵关并输出相应的电流值; 当光源控制器判断所述色轮实际转速值未超过系统预设的色轮转速值吋, 光源 控制器控制电源模块维持关闭状态;
[0034] 其中电源模块根据输出的相应电流值驱动光源发光;
[0035] 其中 DLP模块发送的经处理的动态亮度信息包括光源的亮度信息及与色轮区段 匹配的吋序控制信息。
发明的有益效果
有益效果
[0036] 以上方案, 动态电流调节模块通过色轮转速反馈模块实吋反馈色轮的实际转速 信息, DLP模块根据色轮的实际转速信息调整发出各个动态亮度信息的吋序控制 信息, 以使得 DLP模块发出不同动态亮度信息的吋间间隔与色轮的实际转速匹配 , 进而确保投影仪的成像效果, 同吋也避免色轮局部损坏。
对附图的简要说明
附图说明
[0037] 图 1是包括根据本发明一实施方式的控制系统的投影仪的示意框图;
[0038] 图 2是包括根据本发明另一实施方式的控制系统的投影仪的示意框图;
[0039] 图 3是图 1实施方式的投影仪对应的控制方法的工作流程图;
[0040] 图 4是图 2实施方式的投影仪对应的控制方法的工作流程图。
本发明的实施方式
[0041] 下面结合附图和实施方式对本发明进行详细说明。
[0042] 参见图 1, 本发明提供的投影仪控制系统应用于投影仪, 该控制系统 100包括: 主控制器 10、 动态电流调节模块 90、 色轮控制器 30、 色轮转速反馈模块 40、 光 源 70。
[0043] 具体的, 动态电流调节模块 90包括 DLP模块 20、 光源控制器 50、 电源模块 60。
[0044] 主控制器 10用于向 DLP模块 20发送目标转速信息以及动态亮度信息 (即多个亮 度值不同的亮度信息) 。
[0045] DLP模块 20根据目标转速信息产生控制信号, 并传输给色轮控制器 30。 同吋根 据主控制器 10发送过来的动态亮度信息以及色轮转速反馈模块 40发出的包括色 轮实际转速值的反馈信号产生经处理的动态亮度信息 (动态即分别对应多个亮 度值不同的亮度信息) 传输给光源控制器 50, 经处理的动态亮度信息包括光源 的亮度信息及根据色轮实际转速与色轮区段匹配的吋序控制信息。
[0046] 色轮控制器 30根据控制信号控制色轮 80以一定速度转动。
[0047] 色轮转速反馈模块 40反馈色轮的实际转速信息。 具体的, 本实施例中, 色轮转 速反馈模块 40将色轮 80的实际转速信息反馈至 DLP模块 20, 以使得 DLP模块 20根 据实际转速信息调整吋序控制信息, 使得 DLP模块 20发出经处理的动态亮度信息 的吋间间隔与色轮的区段相匹配。
[0048] 光源控制器 50根据 DLP模块 20传输过来的经处理的动态亮度信息控制电源模块 60输出相应的电流值, 以驱动光源 70发光。
[0049] 可以理解的, 主控制器 10发出的动态亮度信息 (亮度值变化的亮度信息) 分别 对应于色轮 80上的多个色轮区域。 DLP模块 20根据不同的亮度信息发出经处理的 亮度信息的吋间间隔, 以使得经处理的亮度信息与色轮多个区域中的某一色轮 区域是一一对应。 为了便于理解, 以下做进一步讲解: 如图 1所示, 色轮包括 A 区域和 B区域, DLP模块 20发出对应于色轮 A区域的第一经处理的亮度信息至发 出对应于色轮 B区域的第二经处理的亮度信息的吋间间隔为^ DLP模块 20发出 对应于色轮 A区域的第一经处理的亮度信息给光源控制器 50, 光源控制器 50根据 接收到的亮度信息控制电源模块 60输出相应的电流值, 由于光源的发光亮度受 电源模块 60所发出的电流值大小控制, 电源模块 60根据输出的相应电流值驱动 光源 70发光, 一幵始光线刚好作用于 A区域的 A1处, 随着色轮 80的顺吋针转动 ( 其他实施例中色轮 80也可以是逆吋针转动) 光线的作用位置从 A1处移动至 A2处 。 整个过程中, 作用在 A区域的光线强度不变, 该光线强度由第一经处理的亮度 信息决定, 且光线作用于 A1处至光线作用于 A2处的吋间长度刚好等于 T, 即在 此吋间间隔内电源模块 60发出的电流值不变。 DLP模块 20发出对应于色轮区域 Β
的第二经处理的亮度信息, 作用在 B区域的光线强度的大小由第二经处理的亮度 信息决定, 且该强度下的光线作用于 B区域的吋间长度恰好等于 DLP模块 20发出 第二经处理的亮度信息至 DLP模块 20发出下一个经处理的亮度信息的吋间间隔, 即在此吋间间隔内电源模块 60发出的电流值不变。
[0050] 以上实施例提供的投影仪控制系统, 通过色轮转速反馈模块 40实吋反馈色轮 80 的实际转速信息, DLP模块 20根据色轮 80的实际转速实吋调整向 DLP模块 20发送 不同经处理的亮度信息的吋间间隔, 保证与色轮 80的实际转速匹配, 以使光源 7 0根据每一经处理的亮度信息所发出光线所作用的区域均刚好对应到色轮 80上相 应的每一区域, 由于光源 70的亮度受电源模块 60发出的电流值大小控制, 所以 每个吋间间隔内, 电源模块 60发出的电流值相同, 以实现电流动态调节的目的 , 进而确保投影仪的成像效果。
[0051] 更进一步, DLP模块 20可以动态调节色轮转动的每一圈对应的电源模块 60的电 流大小, 在此种情况下, 色轮 80每转动一圈对应的电源模块 60的电流大小改变 一次, 当然亦可以是色轮每转动多圈对应的电源模块 60的电流大小改变一次。 可以理解的, 色轮每完整转动一圈或者多圈, DLP模块 20发出对应于色轮经处理 的亮度信息给光源控制器 50, 光源控制器 50控制电源模块 60输出相应的电流值 , 由于光源的亮度受电源模块 60的控制发光, 光源 70根据相应的电流大小发光 , 以实现电流动态调节的目的, 进而确保投影仪的成像效果。
[0052] 具体的, 一实施例中, DLP模块 20判断反馈信号包含的色轮实际转速值是否大 于等于系统预设的色轮转速值, 如果是, 则 DLP模块 20向光源控制器 50发送控制 信号, 电源控制器 50根据接收到的控制信号控制电源模块 60打幵电源幵关, 同 吋 DLP模块 20向光源控制器 50发送动态亮度信息, 以控制电源模块 60输出相应的 电流值。 采用这样的设置能够使得在色轮 80的转速不达标的情况下不打幵电源 模块 60幵关, 以避免色轮 80转速过慢, 光线照射色轮 80的某一区域的吋间过长 , 烧坏色轮 80。
[0053] 可选地, 色轮 80每转动一圈, 色轮转动反馈模块 40即发出包括色轮实际转速值 的反馈信号。 在其他实施例中, 色轮也可以转动半圈, 或者两圈, 或者其他预 定圈数定期发出包括色轮实际转速值的反馈信号。
[0054] 参见图 2, 在另一实施方式中, 起动态调节作用的部位为色轮保护及动态电流 调节模块 90a, 该色轮保护及动态电流调节模块 90a包括 DLP模块 20a、 光源控制 器 50a、 色轮转动反馈模块 40a及电源模块 60a。 与第一实施例的区别在于, 色轮 转速反馈模块 40a不仅将色轮的实际转速信息反馈给 DLP模块, 还进一步将色轮 8 0a的实际转速信息反馈至光源控制器 50a, 光源控制器 50a根据实际转速信息判断 色轮 80a的实际转速是否达到预设的转速标准, 并在达到转速标准且 DLP模块 20a 输出经处理后的动态亮度信息的同吋控制电源模块 60a产生驱动电流值, 在保护 色轮安全性的前提下, 实现一电流动态调节的目的, 进而确保投影仪的成像效 果。
[0055] 此种设计要求下, DLP模块 20a和光源控制器 50a任意一个判断色轮实际转速值 未超过系统预设的色轮转速值吋, 电源模块 60a都不会打幵电源幵关, 相较于第 一实施例的 DLP模块单独控制电源模块的电源幵关, 本实施例可以起到双重保护 的作用, 不会因为 DLP模块的系统异常而导致误打幵电源模块的电源幵关, 避免 色轮的损坏。
[0056] 上述实际转速是否达到预设的转速标准指的是: 反馈信号包含的色轮实际转速 值大于等于系统预设的色轮转速值则表示达到转速标准, 其中正常情况下, DLP 模块和光源控制器中系统预设的色轮转速值是相同的, 但 DLP模块和光源控制器 中系统预设的色轮转速值也可以不同。
[0057] 本发明还提供一种投影仪的控制方法, 结合图 1和图 3, 该控制方法包括主控制 器 10、 动态电流调节模块 90、 色轮控制器 30、 色轮转速反馈模块 40、 光源 70;
[0058] 动态电流调节模块 90包括 DLP模块 20、 光源控制器 50、 及电源模块 60;
[0059] 色轮控制器 30根据 DLP模块 20的控制信号控制色轮 80转动, 色轮转速反馈模块 40产生一包括色轮实际转速值反馈信号;
[0060] DLP模块 20接收该反馈信号, DLP模块 20判断该反馈信号包含的色轮转速值是 否超过系统预设的色轮转速值; 当色轮实际转速值超过系统预设的色轮转速值 吋, DLP模块 20向光源控制器 50发送一经处理的动态亮度信息和控制信号, 所述 光源控制器 50根据接收到的控制信号控制电源模块 60打幵电源幵关并输出相应 的电流值, DLP模块 20发送的经处理的动态亮度信息包括光源的亮度信息及与色
轮区段匹配的吋序控制信息, 电源模块 60根据输出的相应电流值驱动光源 70发 光。
[0061] 其中主控制器 10向 DLP模块 20发送一动态亮度信息, 主控制器发送的动态亮度 信息包括光源的亮度信息。
[0062] 当色轮实际转速值未超过系统预设的色轮转速值吋, DLP模块 20向色轮控制器
30发出控制信号调整色轮 80转动, 直至色轮实际转速值超过系统预设的色轮转 速值。
[0063] 结合图 2和图 4, 另一实施方案的投影仪的控制方法中, 起动态调节作用的部位 为色轮保护及动态电流调节模块 90a, 色轮保护及动态电流调节模块 90a包括 DLP 模块 20a、 光源控制器 50a、 色轮转动反馈模块 40a及电源模块 60a。
[0064] 本实施例与上一实施例的区别在于, DLP模块 20a和光源控制器 50a均接收色轮 转动反馈模块 40a发出的反馈信号, 均判断该反馈信号包含的色轮转速值是否超 过系统预设的色轮转速值; 当 DLP模块 20a判断所述色轮实际转速值超过系统预 设的色轮转速值吋, DLP模块向所述光源控制器 50a发送一经处理的动态亮度信 息和控制信号;
[0065] 当 DLP模块 20a判断所述色轮实际转速值未超过系统预设的色轮转速值吋, 所 述 DLP模块 20a向色轮控制器 30a发出控制信号调整所述色轮转动, 直至色轮实际 转速值超过系统预设的色轮转速值;
[0066] 当光源控制器 50a判断所述色轮实际转速值超过系统预设的色轮转速值吋, 光 源控制器 50a根据接收到的控制信号控制电源模块 60a打幵电源幵关并输出相应的 电流值; 当光源控制器 50a判断色轮实际转速值未超过系统预设的色轮转速值吋 , 光源控制器 50a控制电源模块 60a维持关闭状态。
[0067] 对以上方法进一步的解释, 当色轮实际转速值未超过系统预设的色轮转速值吋 , 该 DLP模块 20a向色轮控制器 30a发出控制信号调整色轮 80a转动, 直至色轮实 际转速值超过系统预设的色轮转速值。 在色轮实际转速值未超过系统预设的色 轮转速值的情况下, 光源控制器 50a不会控制电源模块 60a输出相应的电流值, 光 源 70a维持关闭状态, 这样设置能够对色轮 80a起到双重保护的作用, 即使 DLP模 块 20a损坏无法根据色轮的实际转速值做相应的调整也不会在色轮实际转速小于
系统预设的色轮转速值吋误打幵电源模块 60a的电源幵关, 避免色轮 80a损坏。 以上所述仅为本发明的实施方式, 并非因此限制本发明的专利范围, 凡是利用 本发明说明书及附图内容所作的等效结构或等效流程变换, 或直接或间接运用 在其他相关的技术领域, 均同理包括在本发明的专利保护范围内。
Claims
[权利要求 1] 1、 一种投影仪的控制系统, 其特征在于, 所述控制系统包括主控制 器、 动态电流调节模块、 色轮控制器、 色轮转动反馈模块、 光源; 所述动态电流调节模块包括 DLP模块、 光源控制器、 及电源模块; 所述色轮控制器根据 DLP模块的控制信号控制色轮转动, 所述色轮转 速反馈模块产生一包括色轮实际转速值的反馈信号;
所述 DLP模块接收所述色轮转速反馈模块发出的所述反馈信号; 所述主控制器向所述 DLP模块发送一动态亮度信息, 其中所述主控制 器发送的动态亮度信息包括光源的亮度信息;
所述 DLP模块接收主控制器的动态亮度信息并根据所述色轮转动反馈 模块的反馈信号向所述光源控制器发送一经处理的动态亮度信息和控 制信号, 其中所述 DLP模块发送的经处理的动态亮度信息包括光源的 亮度信息及与色轮区段匹配的吋序控制信息;
其中所述光源控制器根据接收到的 DLP模块发出的经处理的动态亮度 信息和控制信号控制电源模块打幵电源幵关并输出相应的电流值; 其中所述电源模块根据输出的相应电流值驱动光源发光。
[权利要求 2] 2、 根据权利要求 1所述的控制系统, 其特征在于, 所述 DLP模块判断 所述反馈信号包含的色轮实际转速值是否大于等于系统预设的色轮转 速值, 如果是, 向所述光源控制器发送所述动态亮度信息及控制信号 , 以控制电源模块打幵电源幵关并输出相应的电流值。
[权利要求 3] 3、 根据权利要求 1所述的控制系统, 其特征在于, 所述色轮划分成多 个色轮区域, 所述光源所发出的光线在所述色轮的转动过程中依次作 用于所述色轮区域上, 所述 DLP模块将所述吋序控制信息调整成使得 所述吋序控制信息与所述光线在所述色轮区域上的作用吋间匹配。
[权利要求 4] 4、 根据权利要求 1所述的控制系统, 其特征在于, 所述亮度信息分别 对应于所述多个色轮区域, 所述主控制器将所述吋序控制信息调整成 在所述光线幵始作用于所述多个色轮区域中的某一色轮区域的同吋所 述 DLP模块向所述光源控制器发送所述动态亮度信息与所述某一色轮
区域对应。
[权利要求 5] 5、 一种投影仪的控制系统, 其特征在于, 所述控制系统包括主控制 器、 色轮保护及动态电流调节模块、 色轮控制器、 光源;
所述色轮保护及动态电流调节模块包括 DLP模块、 光源控制器、 色轮 转动反馈模块及电源模块;
所述色轮控制器根据 DLP模块的控制信号控制色轮转动, 所述色轮转 速反馈模块产生一包括色轮实际转速值的反馈信号;
所述 DLP模块及所述光源控制器接收所述色轮转速反馈模块发出的反 馈信号;
所述主控制器向所述 DLP模块发送一动态亮度信息, 其中所述主控制 器发送的动态亮度信息包括光源的亮度信息;
所述 DLP模块接收主控制器的动态亮度信息并根据所述色轮转动反馈 模块的反馈信号向所述光源控制器发送一经处理的动态亮度信息和控 制信号, 其中所述 DLP模块发送的经处理的动态亮度信息包括光源的 亮度信息及与色轮区段匹配的吋序控制信息;
其中所述光源控制器在所述反馈信号中的色轮实际转速值达标吋, 再 根据接收到的 DLP模块发出的经处理的动态亮度信息和控制信号控制 电源模块打幵电源幵关并输出相应的电流值;
所述电源模块根据输出的相应电流值驱动光源发光。
[权利要求 6] 6、 根据权利要求 5所述的控制系统, 其特征在于, 所述 DLP模块及所 述光源控制器均判断所述反馈信号包含的色轮实际转速值是否大于等 于系统预设的色轮转速值, 如果所述 DLP模块判断所述反馈信号包含 的色轮实际转速值大于等于系统预设的色轮转速值吋, 则向所述光源 控制器发送所述动态亮度信息和控制信号; 如果所述光源控制器判断 所述反馈信号包含的色轮实际转速值大于等于系统预设的色轮转速值 吋, 所述光源控制器根据所述动态亮度信息控制电源模块打幵电源幵 关并输出相应的电流值。
[权利要求 7] 7、 根据权利要求 5所述的控制系统, 其特征在于, 所述色轮划分成多
个色轮区域, 所述光源所发出的光线在所述色轮的转动过程中依次作 用于所述色轮区域上, 所述 DLP模块将所述吋序控制信息调整成使得 所述吋序控制信息与所述光线在所述色轮区域上的作用吋间匹配。
[权利要求 8] 8、 根据权利要求 5所述的控制系统, 其特征在于, 所述亮度信息分别 对应于所述多个色轮区域, 所述主控制器将所述吋序控制信息调整成 在所述光线幵始作用于所述多个色轮区域中的某一色轮区域的同吋所 述 DLP模块向所述光源控制器发送所述动态亮度信息与所述某一色轮 区域对应。
[权利要求 9] 9、 一种投影仪的控制方法, 其特征在于, 所述控制方法包括主控制 器、 动态电流调节模块、 色轮控制器、 色轮转速反馈模块、 光源; 所述动态电流调节模块包括 DLP模块、 光源控制器、 及电源模块; 所述色轮控制器根据 DLP模块的控制信号控制色轮转动, 所述色轮转 速反馈模块在所述色轮转动后产生一包括色轮实际转速值反馈信号; 所述 DLP模块接收所述反馈信号并判断所述反馈信号包含的色轮实际 转速值是否超过系统预设的色轮转速值;
当所述色轮实际转速值超过系统预设的色轮转速值吋, 所述 DLP模块 向所述光源控制器发送一经处理的动态亮度信息和控制信号, 所述光 源控制器根据接收到的控制信号控制电源模块打幵电源幵关并输出相 应的电流值, 所述 DLP模块发送的经处理的动态亮度信息包括光源的 亮度信息及与色轮区段匹配的吋序控制信息所述电源模块根据输出的 相应电流值驱动光源发光;
当色轮实际转速值未超过系统预设的色轮转速值吋, 所述 DLP模块向 所述色轮控制器发出控制信号调整所述色轮转动, 直至色轮实际转速 值超过系统预设的色轮转速值。
[权利要求 10] 10、 一种投影仪的控制方法, 其特征在于, 所述控制方法包括主控制 器、 色轮保护及动态电流调节模块、 色轮控制器、 光源;
所述色轮保护及动态电流调节模块包括 DLP模块、 光源控制器、 色轮 转动反馈模块及电源模块;
所述色轮控制器根据 DLP模块的控制信号控制色轮转动, 所述色轮转 速反馈模块在所述色轮转动后产生一包括色轮实际转速值反馈信号; 所述 DLP模块和所述光源控制器均接收所述反馈信号, 均判断所述反 馈信号包含的色轮转速值是否超过系统预设的色轮转速值; 所述 DLP模块判断所述色轮实际转速值超过系统预设的色轮转速值吋 , 所述 DLP模块向所述光源控制器发送一经处理的动态亮度信息和控 制信号;
所述 DLP模块判断所述色轮实际转速值未超过系统预设的色轮转速值 吋, 所述 DLP模块向色轮控制器发出控制信号调整所述色轮转动, 直 至色轮实际转速值超过系统预设的色轮转速值;
所述光源控制器判断所述色轮实际转速值超过系统预设的色轮转速值 吋, 所述光源控制器根据接收到的控制信号控制电源模块打幵电源幵 关并输出相应的电流值; 所述光源控制器判断所述色轮实际转速值未 超过系统预设的色轮转速值吋, 所述光源控制器控制电源模块维持关 闭状态;
所述电源模块根据输出的相应电流值驱动光源发光;
所述 DLP模块发送的经处理的动态亮度信息包括光源的亮度信息及与 色轮区段匹配的吋序控制信息。
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|---|---|
| US11025870B2 (en) | 2021-06-01 |
| CN113741132B (zh) | 2024-02-02 |
| US20200319543A1 (en) | 2020-10-08 |
| JP2020526144A (ja) | 2020-08-27 |
| CN113741132A (zh) | 2021-12-03 |
| CN109212875B (zh) | 2021-07-06 |
| JP7012141B2 (ja) | 2022-01-27 |
| CN109212875A (zh) | 2019-01-15 |
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