CN117499604B - Color regulating method and device for single-chip LCD projector and single-chip LCD projector - Google Patents
Color regulating method and device for single-chip LCD projector and single-chip LCD projector Download PDFInfo
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- 230000033228 biological regulation Effects 0.000 claims abstract description 10
- 230000000630 rising effect Effects 0.000 claims description 31
- 238000012544 monitoring process Methods 0.000 claims description 24
- 230000003068 static effect Effects 0.000 claims description 19
- 238000005265 energy consumption Methods 0.000 claims description 6
- 239000003086 colorant Substances 0.000 description 7
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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]
- H04N9/3179—Video signal processing therefor
- H04N9/3182—Colour adjustment, e.g. white balance, shading or gamut
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/70—Circuitry for compensating brightness variation in the scene
- H04N23/74—Circuitry for compensating brightness variation in the scene by influencing the scene brightness using illuminating means
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Abstract
The application relates to the technical field of color regulation control of a single-chip LCD projector, in particular to a color regulation method and device of the single-chip LCD projector and the single-chip LCD projector.
Description
Technical Field
The application belongs to the technical field of color regulation control of a single-chip LCD projector, and particularly relates to a color regulation method and device of the single-chip LCD projector and the single-chip LCD projector.
Background
A single-panel LCD projector is a projector that performs projection using a single LCD panel, and forms an image by dividing a light source into different colors and projecting the different colors onto a screen by controlling the amount of light transmitted through a liquid crystal cell on the LCD panel. The single-chip LCD projector has simple structure, low cost and high brightness, and is suitable for use in bright environment, so that the LCD projector is practical in business demonstration, education and other places needing certain environment brightness. However, for different scenes, the better projection color can be obtained by automatically matching the brightness, contrast and color modes, and the existing LCD projection technology has no effective solution. In addition, how to control the picture display type and the display duration under different scenes can keep the quality of the projection color of the LCD projector stable, and the prior LCD projection technology has no effective solution.
In summary, the existing LCD projection technology has the technical problems that the brightness, contrast and color mode cannot be automatically matched according to a specific scene, and the quality of the projected color cannot be automatically controlled according to the specific scene to remain stable.
Content of the application
Aiming at the defects in the prior art, the application provides a color regulating method and device of a single-chip LCD projector and the single-chip LCD projector, so as to automatically match brightness, contrast and color modes according to specific scenes and automatically control the quality of projected colors according to the specific scenes to keep stable.
In a first aspect, the present application provides a color control method for a monolithic LCD projector, comprising the steps of:
configuring a plurality of usage scenarios and ambient brightness ranges of the monolithic LCD projector, each usage scenario corresponding to one of the ambient brightness ranges;
presetting brightness, contrast and color modes adapting to the environment brightness ranges according to each environment brightness range;
Judging whether the single-chip LCD projector is in a dynamic picture projection state or not in stages according to the continuous rising temperature, the real-time power change and the current display interface of the projector; the dynamic picture projection state represents that the projection content of the single-chip LCD projector is in a changed play state;
when the single-chip LCD projector is judged to be in a dynamic picture projection state currently, the current ambient brightness of the single-chip LCD projector is monitored, the monitored current ambient brightness is compared with the configured ambient brightness range so as to be matched with the ambient brightness range in which the current ambient brightness is located, and the brightness, contrast and color mode which are matched with the ambient brightness range are automatically adjusted according to the matched ambient brightness range.
In a second aspect, the present application provides a color control apparatus for a monolithic LCD projector, comprising:
A usage scene and ambient brightness configuration module configured to configure a plurality of usage scenes and ambient brightness ranges of the monolithic LCD projector, each of the usage scenes corresponding to one of the ambient brightness ranges;
a brightness, contrast and color mode presetting module, which is used for presetting brightness, contrast and color modes adapting to the environment brightness ranges according to each environment brightness range;
the dynamic picture projection state judging module is used for judging whether the single-chip LCD projector is in a dynamic picture projection state or not in stages according to the continuous rising temperature, the real-time power change and the current display interface of the projector; the dynamic picture projection state represents that the projection content of the single-chip LCD projector is in a changed play state;
And the brightness, contrast and color mode adjusting module is used for monitoring the current ambient brightness of the single-chip LCD projector when judging that the single-chip LCD projector is in a dynamic picture projection state, comparing the monitored current ambient brightness with the configured ambient brightness range so as to match the ambient brightness range in which the current ambient brightness is positioned, and automatically adjusting and adapting the brightness, contrast and color mode of the ambient brightness range according to the matched ambient brightness range.
In a third aspect, the present application provides a monolithic LCD projector comprising:
The brightness monitoring sensor is assembled on the shell of the single-chip LCD projector and is used for monitoring the current environment brightness of the single-chip LCD projector;
The main control board is arranged in the shell of the single-chip LCD projector and is used for running the color regulating method of the single-chip LCD projector.
Compared with the prior art, the application has the following beneficial effects:
The application provides a color regulation method and device of a single-chip LCD projector and the single-chip LCD projector, wherein when the single-chip LCD projector is in a dynamic picture projection state, the current ambient brightness of the single-chip LCD projector is monitored, the monitored current ambient brightness is compared with the configured ambient brightness range, the brightness, contrast and color mode of the ambient brightness range are preset and adapted according to each ambient brightness range, the current image projection state is judged in stages according to the continuous rising temperature, the real-time power change and the current display interface of the projector, the projection content of the single-chip LCD projector is represented by the dynamic picture projection state, and when the single-chip LCD projector is in the dynamic picture projection state, the monitored current ambient brightness is compared with the configured ambient brightness range, the brightness, contrast and color mode of the ambient brightness range are automatically adjusted and adapted according to the matched ambient brightness range, so that the color quality of the image is automatically judged in a three-stage mode, and the image quality is automatically judged according to the automatic contrast and contrast, and the color quality is automatically judged in a three-stage mode, and the image quality is automatically judged according to the specific image quality.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the application and do not constitute a limitation on the application. Some specific embodiments of the application will be described in detail hereinafter by way of example and not by way of limitation with reference to the accompanying drawings. The same reference numbers in the drawings denote the same or similar parts or portions, and it will be understood by those skilled in the art that the drawings are not necessarily drawn to scale, in which:
FIG. 1 is a schematic flow chart of a color control method of a single-panel LCD projector according to the present application;
FIG. 2 is a schematic diagram of a color control device of a one-chip LCD projector according to the present application;
fig. 3 is a schematic diagram of an architecture of a single-panel LCD projector of the present application.
Detailed Description
In order to enable those skilled in the art to better understand the present application, the following description will make clear and complete descriptions of the technical solutions according to the embodiments of the present application with reference to the accompanying drawings. It will be apparent that the described embodiments are merely some, but not all embodiments of the application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present application without making any inventive effort, shall fall within the scope of the present application.
Example 1
Referring to fig. 1-3, the present embodiment provides a color adjusting method of a monolithic LCD projector, including step S101, step S102, step S103, and step S104. The method comprises the steps of S101, S102, S103 and S104, wherein the method is implemented by running on a main control board, the color regulation and control method of the single-chip LCD projector is implemented by configuring a plurality of use scenes and environment brightness ranges of the single-chip LCD projector, each use scene corresponds to one environment brightness range, the brightness, contrast and color mode of the environment brightness range are preset and adapted according to each environment brightness range, whether the single-chip LCD projector is currently in a dynamic picture projection state or not is judged in stages according to the continuous rising temperature, the real-time power change and the current display interface of the projector, the projection content of the single-chip LCD projector is represented by the dynamic picture projection state, when the single-chip LCD projector is currently in the dynamic picture projection state, the current environment brightness of the single-chip LCD projector is monitored, the monitored current environment brightness is compared with the configured environment brightness range, the environment brightness range where the current environment brightness is located is matched, the environment brightness range where the current environment brightness is matched is automatically adjusted according to the matched, the environment brightness range which the current environment brightness is automatically adjusted according to the matched, the environment brightness range which is automatically matched, the contrast and the color quality is automatically adjusted according to the matched environment brightness range, the specific brightness and the color quality is automatically controlled according to the color mode, and the color quality of the color is automatically matched according to the brightness. In addition, through the staged judging process, the triple monitoring mechanisms mutually verify, so that the risk of misjudgment of the projection state of the dynamic picture is reduced.
Step S101, a main control board configures a plurality of use scenes and environment brightness ranges of the single-chip LCD projector, wherein each use scene corresponds to one environment brightness range. Step S102, the main control board presets and adapts the brightness, contrast and color mode of the environment brightness range according to each environment brightness range.
It should be noted that the same brightness, contrast and color pattern may result in a completely different color experience at different ambient brightnesses. For example, in a bright environment, a darker display may be difficult to recognize; while in dim environments, too bright displays may be noticeable. In this embodiment, a plurality of usage scenarios and ambient brightness ranges of the monolithic LCD projector are configured, each usage scenario corresponds to one of the ambient brightness ranges, and according to each of the ambient brightness ranges, the brightness, contrast and color mode of the ambient brightness range are preset to be adapted, so as to provide fine data classification for automatically adjusting the brightness, contrast and color mode of the ambient brightness range in the subsequent step.
It should be noted that the various usage scenarios of the monolithic LCD projector include, but are not limited to, classroom presentation, home theater, business meeting, outdoor activities, and artistic exhibitions or displays. Taking classroom presentation and home theatre as examples, classroom presentation is generally high in brightness and requires clearly visible text and images. In a classroom demonstration scenario, adapted high brightness, medium contrast, and color modes in "demonstration" or "text" modes may be preset. Home theatres are often dark in environment and require rich colors and contrast. In a home cinema scene, the adapted medium or low brightness, high contrast and cinema mode color modes may be preset.
Step S103, the main control board judges whether the single-chip LCD projector is in a dynamic picture projection state or not in stages according to the continuous rising temperature, the real-time power change and the current display interface of the projector, and the dynamic picture projection state represents that the projection content of the single-chip LCD projector is in a changed play state. Step S104, when the main control board judges that the single-chip LCD projector is in a dynamic picture projection state currently, the current ambient brightness of the single-chip LCD projector is monitored, the monitored current ambient brightness is compared with the configured ambient brightness range so as to be matched with the ambient brightness range in which the current ambient brightness is located, and the brightness, contrast and color mode of the adapted ambient brightness range are automatically adjusted according to the matched ambient brightness range.
When the single-chip LCD projector is in a dynamic picture projection state, the projector is characterized to be in a normal projection state, the current environment brightness of the single-chip LCD projector is monitored by a main control board at the moment, the monitored current environment brightness is compared with the configured environment brightness range so as to be matched with the environment brightness range in which the current environment brightness is located, and the brightness, contrast and color modes of the environment brightness range are automatically adjusted and adapted according to the matched environment brightness range, so that the automatic matching of the brightness, contrast and color modes according to specific scenes is realized, the quality of projection colors is automatically controlled to keep stable according to specific scenes, the environment brightness is monitored and the brightness, contrast and color modes of the environment brightness range are automatically adjusted and adapted only when the single-chip LCD projector is in the dynamic picture projection state, and the processing load of the main control board is lightened.
The states of the single-chip LCD projector may also include a still screen projection state, a standby state, a menu/setup state, a cooling state, a signal search state, a no signal state, a firmware/software update state, and the like. Under these states, the main control board does not monitor the ambient brightness and does not automatically adjust the brightness, contrast and color mode adapting to the ambient brightness range, thereby reducing the processing load of the main control board.
It should be noted that, through the staged judging process, the triple monitoring mechanisms mutually verify, so as to reduce the risk of misjudgment of the projection state of the dynamic picture.
In some preferred embodiments, after determining whether the single-chip LCD projector is currently in a dynamic picture projection state, the method further comprises: when the single-chip LCD projector is not in a dynamic picture projection state currently, prohibiting monitoring of the current ambient brightness, and judging whether the single-chip LCD projector is in a static picture projection state currently or not; the projection state of the static picture represents that the projection content of the single-chip LCD projector is in a static play state; and when the duration of the static picture projection state exceeds a preset normal duration, automatically adjusting the brightness, contrast and color mode of the single-chip LCD projector to be in a protection state. Wherein, the automatic adjustment of the brightness, contrast and color mode of the monolithic LCD projector to a protection state may comprise: automatically adjusting the brightness of the single-chip LCD projector to be low brightness with a preset value; automatically adjusting the contrast ratio of the single-chip LCD projector to be a medium contrast ratio with a preset value; and automatically adjusting the color mode of the single-chip LCD projector to an energy-saving mode.
It should be noted that, the main control board first determines whether the projector is in a dynamic image projection state. If not, the system further determines whether it is a still picture projection state. If the projector is in a dynamic picture state, the system monitors the current ambient brightness and adjusts accordingly. However, if the screen is in a still screen state, the ambient brightness is not monitored. And when detecting that the projector is in a static picture state, the main control board starts timing. Once the duration of the static picture state exceeds the preset duration, the main control board can automatically adjust the display parameters of the projector to the protection state. In the protection state, the brightness of the projector is adjusted to a preset low brightness value, the contrast is adjusted to be medium, and the color mode is switched to the energy-saving mode, so that the energy consumption can be reduced, and the potential damage of a long-time static picture to the projector can be effectively prevented. It will be appreciated that displaying the same still image for a long period of time may result in some pixels being over-used, resulting in uneven wear. In this embodiment, by automatically adjusting to the protection state, the continuous high-intensity use of the projector can be reduced, thereby possibly prolonging the service life of the apparatus. Meanwhile, the functions of automatic detection and adjustment can reduce the manual screen protection setting of a user, so that the operation is more convenient.
In other embodiments, after determining whether the single-chip LCD projector is currently in the static screen projection state, the method may further include: when the single-chip LCD projector is not in a static picture projection state at present, judging whether the single-chip LCD projector is in any one of a standby state, a signal searching state and a software updating state at present, and if so, automatically adjusting the brightness, the contrast and the color mode of the single-chip LCD projector to be in the lowest energy consumption state.
It should be noted that, after the determination of the projection state of the still picture occurs in the determination of the projection state of the moving picture, when the main control board determines that the current projector is not in the projection state of the moving picture, the main control board prohibits monitoring the current ambient brightness, in other words, the single-chip LCD projector monitors the ambient brightness and automatically adjusts the brightness, contrast and color mode of the range of the ambient brightness, thereby reducing the processing load of the main control board. In addition, after the static picture projection state is judged, when the single-chip LCD projector is not in the static picture projection state at present, judging whether the single-chip LCD projector is in any one state of a standby state, a signal searching state and a software updating state at present, and if so, automatically adjusting the brightness, the contrast and the color mode of the single-chip LCD projector to the lowest energy consumption state, thereby saving energy consumption.
In some preferred embodiments, determining whether the single-chip LCD projector is currently in a dynamic picture projection state may include: acquiring a continuous rising temperature sensed by a temperature sensor in the single-chip LCD projector; comparing the continuous rising temperature with a preset temperature interval, and deducing that the single-chip LCD projector is in a dynamic picture projection state when the continuous rising temperature is in the preset temperature interval.
It should be noted that, when the projector is operated, internal components thereof, such as a bulb or an LED, generate heat. The dynamic picture may cause more frequent color and brightness changes, resulting in higher heat generation, and once the main control board senses that the temperature of the projector is continuously rising and within a preset temperature interval, it is inferred that the projector is currently in a dynamic picture projection state.
In other preferred embodiments, determining whether the single-panel LCD projector is currently in a dynamic picture projection state may include: and monitoring the current display interface of the single-chip LCD projector, and judging whether the single-chip LCD projector is in a dynamic picture projection state currently according to the current display interface of the single-chip LCD projector. Wherein, according to the current display interface of the monolithic LCD projector, judging whether the monolithic LCD projector is currently in a dynamic picture projection state or not, comprising: capturing continuous frame display pictures of a current display interface of the projector, and comparing differences between the continuous frame display pictures; and when the difference exceeds a predetermined threshold, deducing that the single-chip LCD projector is in a dynamic picture projection state currently, and when the difference does not exceed the predetermined threshold, deducing that the single-chip LCD projector is not in a dynamic picture projection state currently.
It should be noted that, by continuously capturing frames of the current display interface of the projector, the main control board compares differences between the continuously captured frames, and such differences may be based on changes in pixel values, color changes, shape changes, and the like. If the difference between the analyzed frames exceeds a predetermined threshold, it is inferred that the projector is currently in a dynamic picture projection state. This means that the display content is changing. In contrast, if the difference does not exceed the predetermined threshold, the main control board concludes that the projector is not currently in a dynamic picture projection state, i.e., the display content is relatively stable, e.g., the projector is currently in a static picture projection state.
In some other preferred embodiments, determining whether the single-panel LCD projector is currently in a dynamic picture projection state comprises: monitoring real-time power variation of the monolithic LCD projector; and deducing whether the single-chip LCD projector is in a dynamic picture projection state according to the real-time power change of the single-chip LCD projector.
It should be noted that the projector consumes energy during operation, and this energy consumption is reflected in its power readings. Dynamic content tends to result in more frequent pixel changes and brightness adjustments, requiring more energy. In this embodiment, the main control board can learn the working state of the projector by monitoring the power of the projector in real time and analyzing the change of the power. If the power varies significantly, it can be inferred that the projector is projecting dynamic content. According to the monitored power change, the main control board can infer whether the projector is currently in a dynamic picture projection state or not, and accordingly, the projector is appropriately adjusted.
In some improved embodiments, determining whether the monolithic LCD projector is currently in a dynamic picture projection state may include: acquiring a continuous rising temperature sensed by a temperature sensor in the single-chip LCD projector; comparing the continuous rising temperature with a preset temperature interval, deducing that the single-chip LCD projector is in a dynamic picture projection state when the continuous rising temperature is in the preset temperature interval, monitoring a current display interface of the single-chip LCD projector, and judging whether the single-chip LCD projector is in the dynamic picture projection state currently according to the current display interface of the single-chip LCD projector; wherein, according to the current display interface of the monolithic LCD projector, judging whether the monolithic LCD projector is currently in a dynamic picture projection state or not, comprising: capturing continuous frame display pictures of a current display interface of the projector, and comparing differences between the continuous frame display pictures; and when the difference exceeds a predetermined threshold, deducing that the single-chip LCD projector is in a dynamic picture projection state currently, and when the difference does not exceed the predetermined threshold, deducing that the single-chip LCD projector is not in a dynamic picture projection state currently.
It should be noted that, in this embodiment, the main control board monitors the temperature change inside the projector, and if the sensed temperature continuously rises and is within the preset temperature interval, it can be primarily inferred that the projector may be in a dynamic image projection state. When the temperature detection prompts a possible dynamic picture projection state, the main control board further confirms by capturing continuous display frames, and compares differences between the continuous frames. If the difference exceeds a predetermined threshold, the projector is finally confirmed to be in a dynamic picture projection state. It should be noted that the present embodiment combines the preliminary determination of temperature change and the direct frame analysis, thereby more accurately recognizing the dynamic picture state. Wherein the detection of temperature changes provides a rapid reaction mechanism, and the frame analysis ensures the accuracy of the decision. The two detection mechanisms cooperate with each other, so that the misjudgment risk caused by a single factor can be effectively reduced. In addition, in this embodiment, by performing temperature detection first and then performing frame analysis, more complex frame analysis is performed only when the continuously rising temperature is within the preset temperature interval, thereby effectively utilizing resources.
In some improved embodiments, determining whether the monolithic LCD projector is currently in a dynamic picture projection state may include: acquiring a continuous rising temperature sensed by a temperature sensor in the single-chip LCD projector, and monitoring real-time power change of the single-chip LCD projector; comparing the continuous rising temperature with a preset temperature interval, and preliminarily deducing that the single-chip LCD projector is in a dynamic picture projection state when the continuous rising temperature is in the preset temperature interval; after preliminarily deducing that the single-chip LCD projector is in a dynamic picture projection state at present, continuing to deduce whether the single-chip LCD projector is in the dynamic picture projection state at present according to the real-time power change of the single-chip LCD projector; monitoring the current display interface of the single-chip LCD projector when the current dynamic picture projection state of the single-chip LCD projector is continuously inferred, and judging whether the single-chip LCD projector is in the dynamic picture projection state currently according to the current display interface of the single-chip LCD projector; wherein, according to the current display interface of the monolithic LCD projector, judging whether the monolithic LCD projector is currently in a dynamic picture projection state or not, comprising: capturing continuous frame display pictures of a current display interface of the projector, and comparing differences between the continuous frame display pictures; and when the difference exceeds a predetermined threshold, deducing that the single-chip LCD projector is in a dynamic picture projection state currently, and when the difference does not exceed the predetermined threshold, deducing that the single-chip LCD projector is not in a dynamic picture projection state currently.
In this embodiment, the main control board first obtains the continuous rising temperature sensed by the temperature sensor inside the projector. If the continuously rising temperature is within the preset temperature interval, the projector is preliminarily deduced to be possibly in a dynamic picture projection state. After the preliminary conclusion is that the dynamic picture projection state, the main control board further monitors the real-time power change of the projector and further deduces whether the projector is in the dynamic picture projection state. When the projector is in the dynamic picture projection state, the main control board finally confirms the projector to be in the dynamic picture projection state by capturing continuous display frames and comparing the differences between the frames, and if the differences exceed a preset threshold value, the main control board confirms the projector to be in the dynamic picture projection state finally. It can be appreciated that in this embodiment, the main control board mutually verifies the triple monitoring mechanisms through a staged judging process, so that the risk of misjudgment can be reduced. For example, frame analysis may still provide a final accurate determination even if errors occur in temperature sensors or power monitoring in some cases.
It should also be noted that the power consumption of an LCD projector is related to what it displays. For example, dynamic content (such as video or animation) typically causes frequent changes in pixels, resulting in an increase in power. In contrast, static content (e.g., a still picture or document) tends to consume less power. In addition, dynamic content requires more hardware processing power (e.g., video decoding, graphics rendering, etc.), which also increases power consumption.
Further, inferring whether the monolithic LCD projector is currently in a dynamic picture projection state based on the real-time power variation of the monolithic LCD projector may include:
Establishing a baseline of power consumption according to the average power consumption of the single-chip LCD projector when projecting static content; monitoring real-time power consumption of the monolithic LCD projector; comparing the real-time power consumption to a baseline of the power consumption; if the current power is above the baseline of power consumption and exceeds a predetermined threshold, then it is inferred that the single-panel LCD projector is currently in a dynamic picture projection state.
Example two
Referring to fig. 1-3, the present embodiment provides a color adjusting device of a monolithic LCD projector, including:
A usage scene and ambient brightness configuration module configured to configure a plurality of usage scenes and ambient brightness ranges of the monolithic LCD projector, each of the usage scenes corresponding to one of the ambient brightness ranges;
a brightness, contrast and color mode presetting module, which is used for presetting brightness, contrast and color modes adapting to the environment brightness ranges according to each environment brightness range;
the dynamic picture projection state judging module is used for judging whether the single-chip LCD projector is in a dynamic picture projection state or not in stages according to the continuous rising temperature, the real-time power change and the current display interface of the projector; the dynamic picture projection state represents that the projection content of the single-chip LCD projector is in a changed play state;
And the brightness, contrast and color mode adjusting module is used for monitoring the current ambient brightness of the single-chip LCD projector when judging that the single-chip LCD projector is in a dynamic picture projection state, comparing the monitored current ambient brightness with the configured ambient brightness range so as to match the ambient brightness range in which the current ambient brightness is positioned, and automatically adjusting and adapting the brightness, contrast and color mode of the ambient brightness range according to the matched ambient brightness range.
It should be noted that, in this embodiment, by configuring multiple usage scenarios and ambient brightness ranges of the monolithic LCD projector, each usage scenario corresponds to one of the ambient brightness ranges, and according to each of the ambient brightness ranges, the brightness, contrast and color modes of the ambient brightness ranges are preset and adapted, and according to the continuous rising temperature, the real-time power change and the current display interface of the projector, whether the monolithic LCD projector is currently in a dynamic picture projection state is determined in stages; the dynamic picture projection state characterizes the projection content of the single-chip LCD projector as a change play state, when the single-chip LCD projector is in the dynamic picture projection state, the current ambient brightness of the single-chip LCD projector is monitored, the monitored current ambient brightness is compared with the configured ambient brightness range so as to be matched with the ambient brightness range in which the current ambient brightness is positioned, and the brightness, contrast and color mode of the ambient brightness range are automatically adjusted and adapted according to the matched ambient brightness range, so that the automatic collocation of the brightness, contrast and color mode according to specific scenes is realized, the quality of projection colors is automatically controlled to be kept stable according to the specific scenes, and erroneous judgment is prevented.
Example III
Referring to fig. 1-3, the present embodiment provides a monolithic LCD projector, comprising:
The brightness monitoring sensor is assembled on the shell of the single-chip LCD projector and is used for monitoring the current environment brightness of the single-chip LCD projector;
The main control board is arranged in the shell of the single-chip LCD projector and is used for running the color regulating method of the single-chip LCD projector according to any one of the embodiments.
It should be noted that, in this embodiment, the main control board of the monolithic LCD projector runs the color regulation method of the monolithic LCD projector according to any one of the embodiments above, and by configuring multiple usage scenarios and ambient brightness ranges of the monolithic LCD projector, each usage scenario corresponds to one of the ambient brightness ranges, and according to each of the ambient brightness ranges, the brightness, contrast and color mode of the ambient brightness range is preset and adapted, and according to the continuous rising temperature, real-time power change and current display interface of the projector, whether the monolithic LCD projector is currently in a dynamic picture projection state is determined in stages; the dynamic picture projection state characterizes the projection content of the single-chip LCD projector as a change play state, when the single-chip LCD projector is in the dynamic picture projection state, the current ambient brightness of the single-chip LCD projector is monitored, the monitored current ambient brightness is compared with the configured ambient brightness range so as to be matched with the ambient brightness range in which the current ambient brightness is positioned, and the brightness, contrast and color mode of the ambient brightness range are automatically adjusted and adapted according to the matched ambient brightness range, so that the automatic collocation of the brightness, contrast and color mode according to specific scenes is realized, the quality of projection colors is automatically controlled to be kept stable according to the specific scenes, and erroneous judgment is prevented.
Claims (9)
1. A color control method for a monolithic LCD projector, comprising the steps of:
configuring a plurality of usage scenarios and ambient brightness ranges of the monolithic LCD projector, each usage scenario corresponding to one of the ambient brightness ranges;
presetting brightness, contrast and color modes adapting to the environment brightness ranges according to each environment brightness range;
judging whether the single-chip LCD projector is in a dynamic picture projection state or not in stages according to the continuous rising temperature, the real-time power change and the current display interface of the projector; the dynamic picture projection state represents that the projection content of the single-chip LCD projector is in a changed play state; according to the continuous rising temperature, the real-time power change and the current display interface of the projector, judging whether the single-chip LCD projector is in a dynamic picture projection state or not in stages, comprising:
Deducing whether the single-chip LCD projector is in a dynamic picture projection state according to the continuous rising temperature of the single-chip LCD projector;
After deducing that the single-chip LCD projector is in a dynamic picture projection state currently, deducing whether the single-chip LCD projector is in the dynamic picture projection state currently according to the real-time power change of the single-chip LCD projector;
Judging whether the single-chip LCD projector is in a dynamic picture projection state or not according to the current display interface of the single-chip LCD projector when the single-chip LCD projector is inferred to be in the dynamic picture projection state at present;
when the single-chip LCD projector is judged to be in a dynamic picture projection state currently, the current ambient brightness of the single-chip LCD projector is monitored, the monitored current ambient brightness is compared with the configured ambient brightness range so as to be matched with the ambient brightness range in which the current ambient brightness is located, and the brightness, contrast and color mode which are matched with the ambient brightness range are automatically adjusted according to the matched ambient brightness range.
2. The method for color control of a single-panel LCD projector according to claim 1, wherein after determining whether the single-panel LCD projector is currently in a dynamic picture projection state, further comprising:
When the single-chip LCD projector is not in a dynamic picture projection state currently, prohibiting monitoring of the current ambient brightness, and judging whether the single-chip LCD projector is in a static picture projection state currently or not; the projection state of the static picture represents that the projection content of the single-chip LCD projector is in a static play state;
And when the duration of the static picture projection state exceeds a preset normal duration, automatically adjusting the brightness, contrast and color mode of the single-chip LCD projector to be in a protection state.
3. The method of color regulation of a monolithic LCD projector of claim 2, wherein automatically adjusting the brightness, contrast, and color mode of the monolithic LCD projector to a protected state comprises:
Automatically adjusting the brightness of the single-chip LCD projector to be low brightness with a preset value;
automatically adjusting the contrast ratio of the single-chip LCD projector to be a medium contrast ratio with a preset value;
and automatically adjusting the color mode of the single-chip LCD projector to an energy-saving mode.
4. The method for color control of a single-panel LCD projector according to claim 2, wherein after determining whether the single-panel LCD projector is currently in a still picture projection state, further comprising:
When the single-chip LCD projector is not in a static picture projection state at present, judging whether the single-chip LCD projector is in any one of a standby state, a signal searching state and a software updating state at present, and if so, automatically adjusting the brightness, the contrast and the color mode of the single-chip LCD projector to be in the lowest energy consumption state.
5. The method of color regulation of a monolithic LCD projector of claim 1, wherein inferring whether the monolithic LCD projector is currently in a dynamic picture projection state based on a continuously rising temperature of the monolithic LCD projector comprises:
Acquiring a continuous rising temperature sensed by a temperature sensor in the single-chip LCD projector;
Comparing the continuous rising temperature with a preset temperature interval, and deducing that the single-chip LCD projector is in a dynamic picture projection state when the continuous rising temperature is in the preset temperature interval.
6. The method of color regulation of a monolithic LCD projector of claim 1, wherein inferring whether the monolithic LCD projector is currently in a dynamic picture projection state based on real-time power variation of the monolithic LCD projector comprises:
monitoring real-time power variation of the monolithic LCD projector;
and deducing whether the single-chip LCD projector is in a dynamic picture projection state according to the real-time power change of the single-chip LCD projector.
7. The method of claim 1, wherein determining whether the single-chip LCD projector is currently in a dynamic picture projection state based on a current display interface of the single-chip LCD projector, comprises:
Capturing continuous frame display pictures of a current display interface of the projector, and comparing differences between the continuous frame display pictures;
and when the difference exceeds a predetermined threshold, deducing that the single-chip LCD projector is in a dynamic picture projection state currently, and when the difference does not exceed the predetermined threshold, deducing that the single-chip LCD projector is not in a dynamic picture projection state currently.
8. A color control device for a monolithic LCD projector, comprising:
A usage scene and ambient brightness configuration module configured to configure a plurality of usage scenes and ambient brightness ranges of the monolithic LCD projector, each of the usage scenes corresponding to one of the ambient brightness ranges;
a brightness, contrast and color mode presetting module, which is used for presetting brightness, contrast and color modes adapting to the environment brightness ranges according to each environment brightness range;
The dynamic picture projection state judging module is used for judging whether the single-chip LCD projector is in a dynamic picture projection state or not in stages according to the continuous rising temperature, the real-time power change and the current display interface of the projector; the dynamic picture projection state represents that the projection content of the single-chip LCD projector is in a changed play state; according to the continuous rising temperature, the real-time power change and the current display interface of the projector, judging whether the single-chip LCD projector is in a dynamic picture projection state or not in stages, comprising:
Deducing whether the single-chip LCD projector is in a dynamic picture projection state according to the continuous rising temperature of the single-chip LCD projector;
After deducing that the single-chip LCD projector is in a dynamic picture projection state currently, deducing whether the single-chip LCD projector is in the dynamic picture projection state currently according to the real-time power change of the single-chip LCD projector;
Judging whether the single-chip LCD projector is in a dynamic picture projection state or not according to the current display interface of the single-chip LCD projector when the single-chip LCD projector is inferred to be in the dynamic picture projection state at present;
And the brightness, contrast and color mode adjusting module is used for monitoring the current ambient brightness of the single-chip LCD projector when judging that the single-chip LCD projector is in a dynamic picture projection state, comparing the monitored current ambient brightness with the configured ambient brightness range so as to match the ambient brightness range in which the current ambient brightness is positioned, and automatically adjusting and adapting the brightness, contrast and color mode of the ambient brightness range according to the matched ambient brightness range.
9. A monolithic LCD projector, comprising:
The brightness monitoring sensor is assembled on the shell of the single-chip LCD projector and is used for monitoring the current environment brightness of the single-chip LCD projector;
A main control board, disposed in the housing of the monolithic LCD projector, for operating the color control method of the monolithic LCD projector according to any one of claims 1 to 7.
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| CN105592278A (en) * | 2014-10-21 | 2016-05-18 | 宏碁股份有限公司 | Electronic device and projection picture adjusting method |
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| CN108377383B (en) * | 2016-11-07 | 2020-01-10 | 北京邮电大学 | Multi-projection 3D system light field contrast adjusting method and system |
| CN113115011B (en) * | 2021-04-14 | 2021-12-10 | 深圳市和天创科技有限公司 | Intelligent control method and system for light source of projector |
| CN113267943B (en) * | 2021-04-20 | 2022-07-08 | 当趣网络科技(杭州)有限公司 | Method for adjusting brightness of standby indicator light, projector and readable storage medium |
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| CN102103313A (en) * | 2009-12-17 | 2011-06-22 | 三洋电机株式会社 | Projection display device, portable terminal device, and portable camera |
| CN105592278A (en) * | 2014-10-21 | 2016-05-18 | 宏碁股份有限公司 | Electronic device and projection picture adjusting method |
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