CN110855963B - Video data projection method and device - Google Patents

Video data projection method and device Download PDF

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Publication number
CN110855963B
CN110855963B CN201810955704.2A CN201810955704A CN110855963B CN 110855963 B CN110855963 B CN 110855963B CN 201810955704 A CN201810955704 A CN 201810955704A CN 110855963 B CN110855963 B CN 110855963B
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Prior art keywords
video data
light
projector
electric quantity
brightness
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CN110855963A (en
Inventor
彭宇龙
韩杰
王艳辉
翟伟
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Visionvera Information Technology Co Ltd
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Visionvera Information Technology Co Ltd
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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00Details of colour television systems
    • H04N9/12Picture reproducers
    • H04N9/31Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
    • H04N9/3141Constructional details thereof
    • H04N9/315Modulator illumination systems
    • GPHYSICS
    • G08SIGNALLING
    • G08BSIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B17/00Fire alarms; Alarms responsive to explosion
    • G08B17/02Mechanical actuation of the alarm, e.g. by the breaking of a wire
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00Details of colour television systems
    • H04N9/12Picture reproducers
    • H04N9/31Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
    • H04N9/3179Video signal processing therefor

Abstract

The embodiment of the invention provides a video data projection method and a video data projection device, wherein the method comprises the following steps: starting the battery to supply power for the projector; receiving, by the wireless communicator, video data; driving the light supplement lamp to emit light rays for the digital micromirror device; driving the digital micromirror device to project the video data under the light. The video data are transmitted in a wireless mode, a data interface and a data line are not required to be deployed, in addition, a built-in battery is used for supplying power, a charging source line is not required to be deployed, the whole machine is not provided with an exposed interface and wiring, the simplicity and convenience of arrangement of the projector are improved, objects such as protective dust fall off, the projector can adapt to most environments, and the performance of the projector is guaranteed.

Description

Video data projection method and device
Technical Field
The present invention relates to the field of projection technologies, and in particular, to a method and an apparatus for projecting video data.
Background
The projector, also known as a projector, is a device capable of projecting images or videos onto a curtain, wherein the images or videos projected onto the curtain are magnified several times or tens of times under the condition of keeping definition, so that the projector is convenient for people to watch and gives people a wide visual field, and therefore, the projector is widely applied to the fields of teaching, commerce, media advertisement, home entertainment and the like.
Under general conditions, multiple wires such as data line, power cord need be inserted to the projecting apparatus, and the wiring is more, leads to arranging the projecting apparatus comparatively loaded down with trivial details to, the interface of wire rod is more, falls into objects such as dust easily, influences the performance of projecting apparatus.
Disclosure of Invention
The embodiment of the invention provides a video data projection method and device, and aims to solve the problems that a projector is more in wire rod access, so that the arrangement is more complicated, and objects are easy to fall into.
According to an aspect of the present invention, there is provided a method for projecting video data, which is applied to a projector provided with a wireless communicator, a fill-in light, a digital micro-mirror device and a battery, the method comprising:
starting the battery to supply power for the projector;
receiving, by the wireless communicator, video data;
driving the light supplement lamp to emit light rays for the digital micromirror device;
driving the digital micromirror device to project the video data under the light.
Optionally, the projector is further provided with a decoder, and after the receiving the video data by the wireless communicator, the method further comprises:
invoking the decoder to decode the video data;
the driving the digital micromirror device to project the video data under the light comprises:
driving the digital micromirror device to project the decoded video data under the light source.
Optionally, the invoking the decoder to decode the video data includes:
and if the residual electric quantity of the battery is smaller than a preset electric quantity threshold value, writing the residual electric quantity into the video data during decoding.
Optionally, the invoking the decoder to decode the video data includes:
and if the residual electric quantity of the battery is smaller than a preset electric quantity threshold value, reducing the resolution of the video data during decoding.
Optionally, the projecting apparatus still is provided with photosensitive sensor, the drive the light filling lamp is digital micro mirror device transmission light includes:
detecting, by the photosensitive sensor, a first brightness of an environment;
calculating second brightness of a supplementary lighting according to first brightness of the environment, wherein the first brightness is positively correlated with the second brightness;
and driving the light supplement lamp to emit light to the digital micromirror device according to the second brightness.
Optionally, the driving the light filling lamp to emit light for the digital micromirror device further includes:
and if the residual electric quantity of the battery is smaller than a preset electric quantity threshold value, reducing the second brightness of the light supplement lamp.
According to another aspect of the present invention, there is provided a video data projection apparatus for use in a projector provided with a wireless communicator, a fill-in light, a digital micromirror device, and a battery, the apparatus comprising:
the power supply module is used for starting the battery to supply power to the projector;
a video data receiving module for receiving video data through the wireless communicator;
the light emitting module is used for driving the light supplementing lamp to emit light for the digital micromirror device;
and the video data projection module is used for driving the digital micro-mirror device to project the video data under the light.
Optionally, the projector is further provided with a decoder, and the apparatus further comprises:
the decoding module is used for calling the decoder to decode the video data;
the video data projection module includes:
and the decoding projection submodule is used for driving the digital micro-mirror device to project the decoded video data under the light source.
Optionally, the decoding module comprises:
and the residual electric quantity writing submodule is used for writing the residual electric quantity into the video data during decoding if the residual electric quantity of the battery is smaller than a preset electric quantity threshold value.
Optionally, the decoding module comprises:
and the resolution reduction submodule is used for reducing the resolution of the video data during decoding if the residual electric quantity of the battery is smaller than a preset electric quantity threshold value.
Optionally, the projector is further provided with a photosensitive sensor, and the light emitting module includes:
the brightness detection submodule is used for detecting first brightness of the environment through the photosensitive sensor;
the luminance calculation operator module is used for calculating second luminance of the supplementary lighting according to first luminance of the environment, and the first luminance is positively correlated with the second luminance;
and the brightness driving submodule is used for driving the light supplementing lamp to emit light to the digital micromirror device according to the second brightness.
Optionally, the light emitting module further includes:
and the brightness reduction submodule is used for reducing the second brightness of the light supplement lamp if the residual electric quantity of the battery is smaller than a preset electric quantity threshold value.
The embodiment of the invention has the following advantages:
in the embodiment of the invention, the battery is started to supply power to the projector, the wireless communicator is used for receiving video data, the light supplementing lamp is driven to emit light rays for the digital micromirror device, the digital micromirror device is driven to project the video data under the light rays, the video data is transmitted in a wireless mode, a data interface and a data wire do not need to be deployed, in addition, the battery is arranged for supplying power, a charging source wire does not need to be deployed, the whole projector is not provided with an exposed interface and wiring, the simplicity of the arrangement of the projector is improved, in addition, objects such as dust and the like are prevented from falling off, the projector can adapt to most environments, and the performance of the projector is ensured.
Drawings
FIG. 1 is a flow chart illustrating the steps of a method for projecting video data in accordance with one embodiment of the present invention;
FIG. 2 is a flow chart illustrating steps of another method for projecting video data in accordance with one embodiment of the present invention;
fig. 3 is a block diagram of a video data projection apparatus according to an embodiment of the present invention.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
Referring to fig. 1, a flowchart illustrating steps of a method for projecting video data according to an embodiment of the present invention is shown, which may specifically include the following steps:
and 101, starting the battery to supply power for the projector.
In a specific implementation, the embodiments of the present invention may be applied to projectors, which may be classified according to purposes, such as an educational projector, a business projector, a home projector, a child early education projector, a mobile phone projector, an advertisement projector, and the like, and may be classified according to technologies, such as a CRT (Cathode Ray Tube) projector, a laser projector, a Liquid Crystal projector, a DLP (Digital Light Processor) projector, an LCOS (Liquid Crystal on Silicon) projector, a touch writing projector, a tablet computer projector, an LED (Light-Emitting Diode) projector, and the like.
In a specific implementation, the projector is provided with a processor, a memory, a control switch, a wireless communicator, a light supplement lamp, a digital micro-mirror device, a battery and other components.
The processor may be a DLP (Digital Light Processing) controller, etc., which is a control center of the projector, connects various parts of the entire projector by using various interfaces and lines, and performs various functions and processes of the projector by operating or executing software programs and/or modules stored in the memory and calling data stored in the memory, thereby monitoring the entire projector.
The control switch may be a physical button, a touch button, or the like, which the user presses to activate the projector.
The battery comprises a lithium battery and the like, supplies power to the projector, supplies normal operation of each component, supports a wireless charging protocol such as Qi, and performs wireless charging.
In the embodiment of the invention, a user puts the projector at a proper position, faces the direction of a curtain, a blank wall and the like, presses the control switch to start the projector, and at the moment, the battery supplies power to the projector, and each component in the projector normally operates.
Step 102, receiving video data through the wireless communicator.
In a specific implementation, the wireless communicator may transmit video data such as HDMI (High Definition Multimedia Interface) through infrared or the like.
The user may activate the video source device, i.e. the device providing the video data, such as a personal computer, a mobile terminal, a set-top box accessing a video network, etc.
The video source device is also configured for wireless communication with the projector.
After the projector is started, the projector is paired with the video source device.
After pairing is successful, the video source device transmits video data such as HDMI to the projector through its wireless communicator.
In contrast, the projector receives video data such as HDMI transmitted from the source video device through its wireless communicator.
And 103, driving the light supplement lamp to emit light rays for the digital micromirror device.
The light supplement lamp can comprise an LED and the like, and the processor starts the light supplement lamp according to a set current value and emits light as a light source.
Further, the fill-in lamp faces a DMD (Digital Micromirror Device), and the light is incident on the DMD.
And step 104, driving the digital micro-mirror device to project the video data under the light.
The processor sends video data to the DMD, and 80 to 100 ten thousand small mirrors are arranged on the DMD, each small mirror can independently turn over for 10 degrees in the positive direction and the negative direction and can turn over 65000 times per second, and light rays are reflected to the screen through the small mirrors to directly form images.
In the embodiment of the invention, the battery is started to supply power to the projector, the wireless communicator is used for receiving video data, the light supplementing lamp is driven to emit light rays for the digital micromirror device, the digital micromirror device is driven to project the video data under the light rays, the video data is transmitted in a wireless mode, a data interface and a data wire do not need to be deployed, in addition, the battery is arranged for supplying power, a charging source wire does not need to be deployed, the whole projector is not provided with an exposed interface and wiring, the simplicity of the arrangement of the projector is improved, in addition, objects such as dust and the like are prevented from falling off, the projector can adapt to most environments, and the performance of the projector is ensured.
Referring to fig. 2, a flowchart illustrating steps of another method for projecting video data according to an embodiment of the present invention is shown, which may specifically include the following steps:
step 201, starting the battery to supply power for the projector.
Step 202, receiving video data through the wireless communicator.
Step 203, invoking the decoder to decode the video data.
In a specific implementation, the projector is further provided with a decoder, and after receiving the video data, the decoder can be called to decode the video data into video data in YUV or other formats.
In an embodiment of the invention, the processor may detect the remaining power of the battery in real time, set a power threshold for the remaining power, and compare the remaining power of the battery with the power threshold, and if the remaining power of the battery is less than the power threshold, it indicates that the remaining power is low, and the time for operating the projector may be kept short.
In one embodiment, if the remaining power of the battery is less than the preset power threshold, the remaining power is written into the video data during decoding, and when the video data is projected to the curtain, the remaining power of the battery is displayed on the projected picture to prompt the user that the power is insufficient, thereby facilitating the user to perform the processes of charging, adjusting the projection time, and the like.
In another embodiment, if the remaining power of the battery is less than the preset power threshold, the resolution of the video data is reduced during decoding, so as to reduce the power consumption of the decoder, thereby reducing the power consumption and prolonging the endurance time of the battery.
Further, the resolution of the video data is positively correlated with the remaining power, i.e., the lower the remaining power, the lower the resolution.
And 204, driving the light supplement lamp to emit light rays for the digital micromirror device.
In a specific implementation, the projector is also provided with a photosensitive sensor.
The first brightness of the environment can be detected through the photosensitive sensor, and therefore the second brightness of the supplementary lighting lamp is calculated according to the first brightness of the environment.
The first brightness and the second brightness are positively correlated, that is, the higher the first brightness of the environment is, the higher the second brightness of the light supplement lamp is, and on the contrary, the lower the first brightness of the environment is, the lower the second brightness of the light supplement lamp is, so that the second brightness of the light supplement lamp adapts to the first brightness of the environment, thereby improving the quality of the projected picture.
And driving the light filling lamp to emit light to the digital micromirror device according to the second brightness.
In one embodiment of the invention, the processor may detect the remaining capacity of the battery in real time.
If the residual electric quantity of the battery is smaller than the preset electric quantity threshold value, the second brightness of the light supplement lamp is reduced, so that the power consumption of the light supplement lamp is reduced, the power consumption is reduced, and the endurance time of the battery is prolonged.
And step 205, driving the digital micro-mirror device to project the decoded video data under the light source.
The processor receives the video data such as YUV and the like obtained after decoding by the decoder and transmits the video data to the DMD, and the DMD projects the video data such as YUV and the like after decoding.
It should be noted that, for simplicity of description, the method embodiments are described as a series of acts or combination of acts, but those skilled in the art will recognize that the present invention is not limited by the illustrated order of acts, as some steps may occur in other orders or concurrently in accordance with the embodiments of the present invention. Further, those skilled in the art will appreciate that the embodiments described in the specification are presently preferred and that no particular act is required to implement the invention.
Referring to fig. 3, a block diagram of a video data projection apparatus according to an embodiment of the present invention is shown, and the apparatus is applied to a projector, where the projector is provided with a wireless communicator, a fill light, a digital micro-mirror device and a battery, and the apparatus may specifically include the following modules:
a power supply module 301, configured to start the battery to supply power to the projector;
a video data receiving module 302 for receiving video data through the wireless communicator;
the light emitting module 303 is configured to drive the light supplement lamp to emit light for the digital micromirror device;
and a video data projection module 304 for driving the digital micromirror device to project the video data under the light.
In one embodiment of the invention, the projector is further provided with a decoder, the apparatus further comprising:
the decoding module is used for calling the decoder to decode the video data;
the video data projection module 304 includes:
and the decoding projection submodule is used for driving the digital micro-mirror device to project the decoded video data under the light source.
In one embodiment of the present invention, the decoding module includes:
and the residual electric quantity writing submodule is used for writing the residual electric quantity into the video data during decoding if the residual electric quantity of the battery is smaller than a preset electric quantity threshold value.
In one embodiment of the present invention, the decoding module includes:
and the resolution reduction submodule is used for reducing the resolution of the video data during decoding if the residual electric quantity of the battery is smaller than a preset electric quantity threshold value.
In an embodiment of the present invention, the projector is further provided with a photosensitive sensor, and the light emitting module 303 includes:
the brightness detection submodule is used for detecting first brightness of the environment through the photosensitive sensor;
the luminance calculation operator module is used for calculating second luminance of the supplementary lighting according to first luminance of the environment, and the first luminance is positively correlated with the second luminance;
and the brightness driving submodule is used for driving the light supplementing lamp to emit light to the digital micromirror device according to the second brightness.
In an embodiment of the present invention, the light emitting module 303 further includes:
and the brightness reduction submodule is used for reducing the second brightness of the light supplement lamp if the residual electric quantity of the battery is smaller than a preset electric quantity threshold value.
For the device embodiment, since it is basically similar to the method embodiment, the description is simple, and for the relevant points, refer to the partial description of the method embodiment.
In the embodiment of the invention, the battery is started to supply power to the projector, the wireless communicator is used for receiving video data, the light supplementing lamp is driven to emit light rays for the digital micromirror device, the digital micromirror device is driven to project the video data under the light rays, the video data is transmitted in a wireless mode, a data interface and a data wire do not need to be deployed, in addition, the battery is arranged for supplying power, a charging source wire does not need to be deployed, the whole projector is not provided with an exposed interface and wiring, the simplicity of the arrangement of the projector is improved, in addition, objects such as dust and the like are prevented from falling off, the projector can adapt to most environments, and the performance of the projector is ensured.
The embodiments in the present specification are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, apparatus, or computer program product. Accordingly, embodiments of the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, embodiments of the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
Embodiments of the present invention are described with reference to flowchart illustrations and/or block diagrams of methods, terminal devices (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing terminal to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing terminal, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing terminal to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing terminal to cause a series of operational steps to be performed on the computer or other programmable terminal to produce a computer implemented process such that the instructions which execute on the computer or other programmable terminal provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
While preferred embodiments of the present invention have been described, additional variations and modifications of these embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the embodiments of the invention.
Finally, it should also be noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or terminal that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or terminal. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or terminal that comprises the element.
The present invention provides a method and an apparatus for projecting video data, which are described in detail above, and the principles and embodiments of the present invention are explained herein by using specific examples, and the descriptions of the above examples are only used to help understand the method and the core ideas of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.

Claims (7)

1. A video data projection method is characterized by being applied to a projector, wherein the projector is provided with a wireless communicator, a light supplement lamp, a digital micro-mirror device and a battery, and the method comprises the following steps:
starting the battery to supply power for the projector;
receiving, by the wireless communicator, video data;
driving the light supplement lamp to emit light rays for the digital micromirror device;
driving the digital micromirror device to project the video data under the light;
the projector is further provided with a decoder, and after the receiving of the video data by the wireless communicator, the method further comprises:
invoking the decoder to decode the video data;
wherein said invoking the decoder to decode the video data comprises:
if the residual electric quantity of the battery is smaller than a preset electric quantity threshold value, reducing the resolution of the video data during decoding;
wherein the resolution of the video data is positively correlated with the remaining capacity;
wherein, the projecting apparatus still is provided with photosensitive sensor, the drive the light filling lamp is digital micromirror device transmission light, include:
detecting, by the photosensitive sensor, a first brightness of an environment;
calculating second brightness of a supplementary lighting according to first brightness of the environment, wherein the first brightness is positively correlated with the second brightness;
and driving the light supplement lamp to emit light to the digital micromirror device according to the second brightness.
2. The method of claim 1, wherein said driving the digital micromirror device to project the video data under the light comprises:
driving the digital micromirror device to project the decoded video data under the light.
3. The method of claim 2, wherein invoking the decoder to decode the video data comprises:
and if the residual electric quantity of the battery is smaller than a preset electric quantity threshold value, writing the residual electric quantity into the video data during decoding.
4. The method of claim 1, wherein driving the fill light to emit light for the dmd, further comprises:
and if the residual electric quantity of the battery is smaller than a preset electric quantity threshold value, reducing the second brightness of the light supplement lamp.
5. The utility model provides a video data's projection arrangement, its characterized in that uses in the projecting apparatus, the projecting apparatus is provided with wireless communicator, light filling lamp, digital micro mirror device and battery, the device includes:
the power supply module is used for starting the battery to supply power to the projector;
a video data receiving module for receiving video data through the wireless communicator;
the light emitting module is used for driving the light supplementing lamp to emit light for the digital micromirror device;
the video data projection module is used for driving the digital micromirror device to project the video data under the light;
the projector is further provided with a decoder, the apparatus further comprising:
the decoding module is used for calling the decoder to decode the video data;
wherein the decoding module comprises:
the resolution reduction submodule is used for reducing the resolution of the video data during decoding if the residual electric quantity of the battery is smaller than a preset electric quantity threshold;
wherein the resolution of the video data is positively correlated with the remaining capacity;
wherein, the projecting apparatus still is provided with photosensitive sensor, light emission module includes:
the brightness detection submodule is used for detecting first brightness of the environment through the photosensitive sensor;
the luminance calculation operator module is used for calculating second luminance of the supplementary lighting according to first luminance of the environment, and the first luminance is positively correlated with the second luminance;
and the brightness driving submodule is used for driving the light supplementing lamp to emit light to the digital micromirror device according to the second brightness.
6. The apparatus of claim 5, wherein the video data projection module comprises:
and the decoding projection submodule is used for driving the digital micro-mirror device to project the decoded video data under the light.
7. The apparatus of claim 6, wherein the decoding module comprises:
and the residual electric quantity writing submodule is used for writing the residual electric quantity into the video data during decoding if the residual electric quantity of the battery is smaller than a preset electric quantity threshold value.
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