CN106774765B - Display device closing method and device and display system - Google Patents
Display device closing method and device and display system Download PDFInfo
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- CN106774765B CN106774765B CN201611148303.3A CN201611148303A CN106774765B CN 106774765 B CN106774765 B CN 106774765B CN 201611148303 A CN201611148303 A CN 201611148303A CN 106774765 B CN106774765 B CN 106774765B
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/26—Power supply means, e.g. regulation thereof
- G06F1/266—Arrangements to supply power to external peripherals either directly from the computer or under computer control, e.g. supply of power through the communication port, computer controlled power-strips
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/26—Power supply means, e.g. regulation thereof
- G06F1/32—Means for saving power
- G06F1/3203—Power management, i.e. event-based initiation of a power-saving mode
- G06F1/3206—Monitoring of events, devices or parameters that trigger a change in power modality
- G06F1/3215—Monitoring of peripheral devices
- G06F1/3218—Monitoring of peripheral devices of display devices
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/26—Power supply means, e.g. regulation thereof
- G06F1/32—Means for saving power
- G06F1/3203—Power management, i.e. event-based initiation of a power-saving mode
- G06F1/3234—Power saving characterised by the action undertaken
- G06F1/325—Power saving in peripheral device
- G06F1/3265—Power saving in display device
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Abstract
The invention discloses a method and a device for closing a display device and a display system. The method for closing the display device comprises the following steps: receiving a closing request sent by the display device when the image signal sent by the display control device is not detected; according to the closing request, notifying the display device to carry out closing preparation, and receiving a ready notification sent by the display device after the closing preparation is finished; and powering off the display device according to the ready notice. By adopting the invention, the waste of resources can be reduced, and the user experience can be improved.
Description
Technical Field
The invention relates to the technical field of computers, in particular to a method and a device for closing a display device and a display system.
Background
The complete machine is a complete set or an integral single machine or single machine type electromechanical product. In some devices, when a host is turned off, the corresponding display device is not turned off with the host, but is turned off after waiting for a certain period of time after no image signal from the host is detected. Taking a complete machine combining a PC (Personal Computer) host (the PC host is a Windows system) and a liquid crystal display as an example, when a user closes the PC host through a Windows system desktop of the PC host, the user can only close the PC host, but cannot close a corresponding liquid crystal display, and the liquid crystal display is still in a running state. Since the PC host is turned off, the LCD does not receive image signals from the PC host, and therefore the LCD displays a no-signal prompt on the screen. After the lcd waits for a period of time (typically 5 minutes) and still does not receive the image signal from the PC host, the lcd determines that the PC host is turned off, so that the power-off process is started to turn off itself. Therefore, in the prior art, although the operation logic for turning off the whole machine is simple, when a user turns off a certain host through an operation interface of the host in the whole machine, the display device corresponding to the host in the whole machine cannot be turned off, which is likely to bring a bad user experience.
Disclosure of Invention
The invention provides a method and a device for closing a display device and a display system, which can reduce the waste of resources and improve the user experience.
The invention provides a method for closing a display device, which specifically comprises the following steps:
receiving a closing request sent by the display device when the image signal sent by the display control device is not detected;
according to the closing request, notifying the display device to carry out closing preparation, and receiving a ready notification sent by the display device after the closing preparation is finished;
and powering off the display device according to the ready notice.
Further, the receiving of the shutdown request sent by the display device when the image signal sent by the display control device is not detected specifically includes:
receiving a closing request sent by the display device when the display device detects that a CLK signal in an HDMI connecting the display device and the display control device is a direct current signal; alternatively, the first and second electrodes may be,
receiving a shutdown request transmitted by the display device when detecting that a power supply signal in the HDMI connecting the display device and the display control device is a low-level signal.
Further, the notifying the display device to perform preparation for closing according to the closing request, and receiving a ready notification sent by the display device after the preparation for closing is completed, specifically including:
generating a data storage instruction according to the closing request, and sending the data storage instruction to the display device;
and receiving a ready notice sent by the display device after the display device receives the data storage instruction and completes data storage according to the data storage instruction.
Further, the generating a data storage instruction according to the closing request, and sending the data storage instruction to the display device specifically includes:
detecting the state of the display control device according to the closing request;
and when the display control device is detected to be in the closed state, generating the data storage instruction, and sending the data storage instruction to the display device.
Further, the close request and the ready notification are both transmitted over USB; the display device comprises an android host and a liquid crystal display which are connected with each other; the android host comprises an android main chip for processing image signals; the display control device is a PC host.
Correspondingly, the invention also provides a closing device of the display device, which specifically comprises:
a closing request receiving module, configured to receive a closing request sent by a display device when the display device does not detect an image signal sent by a display control device;
a ready notification receiving module, configured to notify the display device to perform a closing preparation according to the closing request, and receive a ready notification sent by the display device after the closing preparation is completed; and the number of the first and second groups,
and the display device closing module is used for powering off the display device according to the ready notice.
Further, the closing request receiving module specifically includes:
a first close request receiving unit configured to receive a close request transmitted by the display apparatus when detecting that a CLK signal in an HDMI connecting the display apparatus and the display control apparatus is a direct current signal; alternatively, the first and second electrodes may be,
a second off request receiving unit that receives an off request transmitted by the display apparatus when detecting that a power supply signal in an HDMI connecting the display apparatus and the display control apparatus is a low level signal.
Further, the ready notification receiving module specifically includes:
the data storage instruction sending unit is used for generating a data storage instruction according to the closing request and sending the data storage instruction to the display device; and the number of the first and second groups,
and the notification receiving unit is used for receiving a ready notification sent by the display device after the display device receives the data storage instruction and completes data storage according to the data storage instruction.
Further, the data storage instruction sending unit specifically includes:
a device state detection subunit, configured to detect a state of the display control device according to the shutdown request; and the number of the first and second groups,
and the instruction sending subunit is used for generating the data storage instruction and sending the data storage instruction to the display device when the state of the display control device is detected to be the closed state.
Correspondingly, the invention also provides a display system, which comprises a power supply control device, a display control device and a display device;
the power supply control device is a shutdown device of the display device according to any one of claims 6 to 10;
the display control device is used for sending an image signal to the display device;
the display device is used for detecting the image signal sent by the display control device and generating and displaying a corresponding image according to the image signal when the image signal is detected, or sending a closing request to the power supply control device when the image signal is not detected.
The implementation of the invention has the following beneficial effects:
according to the display device closing method and device and the display system, the display device detects the state of the display control device, and immediately requests the power control device to close when the display control device is detected to be closed, so that the power control device can immediately close the display device after the display control device is closed, and the waste of resources is reduced. Because the display device is closed immediately after the display control device is closed, the user can close the display device while closing the display control device, thereby improving the user experience.
Drawings
FIG. 1 is a flowchart illustrating a method for turning off a display device according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of another embodiment of a method for turning off a display device according to the present invention;
FIG. 3 is a schematic structural diagram of one embodiment of a closing apparatus of a display apparatus according to the present invention;
fig. 4 is a schematic structural diagram of an embodiment of a display system provided by the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, a flowchart of an embodiment of a method for turning off a display device provided by the present invention is shown, including steps S11 to S15, as follows:
s11: receiving a closing request sent by the display device when the image signal sent by the display control device is not detected;
s12: according to the closing request, notifying the display device to carry out closing preparation, and receiving a ready notification sent by the display device after the closing preparation is finished;
s13: and powering off the display device according to the ready notice.
It should be noted that the present embodiment is executed by a power control device in the whole machine. The whole machine mainly comprises a power supply control device, a display device and a display control device. The power control device may be an MCU (Micro Controller Unit). When the display device does not detect the image signal transmitted by the display control device, the display control device is considered to be closed, and the power control device is informed of the closing of the display control device. The power control means powers off the display means after receiving the message that the display control means has been turned off, thereby turning off the display means.
In a preferred embodiment, the display control means transmits the image to be displayed to the display means for display. The display device detects an image signal from the display control device, and when the image signal sent by the display control device is detected, the image signal is analyzed and processed to display a corresponding image; when the display device does not detect the image signal transmitted by the display control device, the display control device is considered to be turned off, and a turn-off request is transmitted to the power control device. When the user turns off the display control device through the user operation interface of the display control device, the display device is not turned off along with the turning off of the display control device. The display control device does not send image signals to the display device after being closed. The display device does not detect the image signal transmitted from the display control device, and therefore, the display control device is considered to be turned off, thereby generating a turn-off request, and transmitting the turn-off request to the power supply control device. The power control device notifies the display device of a preparation before turning off after receiving a turn-off request transmitted from the display device. The display device sends a ready notification to the power control device after completing shutdown preparations such as data storage and arithmetic logic restoration. The power control device powers off the display device by turning off the power board after receiving the ready notification sent by the display device, thereby turning off the display device.
It should be further explained that the power panel in the complete machine supplies power to the display control device and the display device at the same time. The power control device can cut off the power of the display device when the power panel is closed, and the display control device is also cut off, so that the whole machine is closed.
The display device detects the state of the display control device and immediately requests the power supply control device to be turned off when the display control device is detected to be turned off, so that the power supply control device can turn off the display device immediately after the display control device is turned off, and the waste of resources is reduced. Because the display device is closed immediately after the display control device is closed, the user can close the display device while closing the display control device, thereby improving the user experience.
Further, the receiving of the shutdown request sent by the display device when the image signal sent by the display control device is not detected specifically includes:
receiving a close request transmitted by the display apparatus when detecting that a CLK (Clock) signal in an HDMI (High Definition Multimedia Interface) connecting the display apparatus and the display control apparatus is a dc signal; alternatively, the first and second electrodes may be,
receiving a shutdown request transmitted by the display device when detecting that a power supply signal in the HDMI connecting the display device and the display control device is a low-level signal.
It should be noted that the image data stored in the display control apparatus is transmitted to the display apparatus via the HDMI. The display device acquires an image signal from the HDMI, and displays a corresponding image according to the acquired image signal. When the display apparatus does not detect the image signal in the HDMI, it is considered that the display control apparatus has been turned off, thereby generating a turn-off request. When the display control apparatus transmits an image signal to the display apparatus via the HDMI, the CLK signal in the HDMI is an alternating current signal (3.0V voltage with an alternating current carrier signal), and the power signal in the HDMI is a high level signal (5V voltage), so the display apparatus can determine whether there is an image signal transmitted by the display control apparatus in the HDMI by detecting the CLK signal in the HDMI or the power signal in the HDMI, and when it is detected that the CLK signal in the HDMI is a direct current signal (3.3V direct current voltage without waveform), or when it is detected that the power signal in the HDMI is a low level signal (0V voltage), the display control apparatus assumes that there is no image signal transmitted by the display control apparatus in the HDMI, and the display control apparatus is turned off, thus generating a turn-off request to the power control apparatus.
The state of the display control device can be judged by judging the state of the CLK signal or the power supply signal in the HDMI, and the judging method is simple and quick, so that the rate of the process of closing the display device can be increased, the waste of resources is further reduced, and the user experience is improved.
Further, the notifying the display device to perform preparation for closing according to the closing request, and receiving a ready notification sent by the display device after the preparation for closing is completed, specifically including:
generating a data storage instruction according to the closing request, and sending the data storage instruction to the display device;
and receiving a ready notice sent by the display device after the display device receives the data storage instruction and completes data storage according to the data storage instruction.
The display device includes a data processing module that processes data (specifically, the data is image data). After receiving a closing request sent by the display device, the power control device generates a corresponding data storage instruction according to the closing request and sends the data storage instruction to the display device. After receiving the data storage command, the display device stores the data in the display device and completes preparation work before shutdown, such as arithmetic logic recovery. After completion of preparation for shutdown such as data storage, arithmetic logic restoration, and the like, the display apparatus sends a ready notification to the power control apparatus, thereby causing the power control apparatus to control shutdown of the display apparatus.
Further, the generating a data storage instruction according to the closing request, and sending the data storage instruction to the display device specifically includes:
detecting the state of the display control device according to the closing request;
and when the display control device is detected to be in the closed state, generating the data storage instruction, and sending the data storage instruction to the display device.
In order to confirm that the display control device is turned off and avoid erroneous shutdown after the power control device receives the turn-off request transmitted from the display device, the power control device detects the state of the display control device before generating the data storage command. If the state of the display control device is detected to be a closed state, generating a corresponding data storage instruction according to the received closing request, and sending the data storage instruction to the display device; if the state of the display control device is detected to be the running state, the display device is considered to judge the state of the display control device by mistake, so that the closing request sent by the display device is not processed further.
By detecting the state of the display control device before closing the display device, the display device can be ensured to be closed when the display control device is closed, so that the closing accuracy is improved, and the damage to the device and the loss of data are avoided.
In another preferred embodiment, the close request and the ready notification are both transmitted via USB (Universal Serial Bus); the display device comprises an android host and a liquid crystal display which are connected with each other; the android host comprises an android main chip for processing image signals; the display control device is a PC host.
In this embodiment, the display device and the power control device are connected by USB, so the shutdown request, the data storage command, and the ready command are transmitted by USB. The display device comprises an android host and a liquid crystal display which are connected with each other. The android host is data processing equipment based on an android system, and can receive, calculate, store, send and the like data, wherein the android host comprises an android main chip specially used for processing image signals. The android host can directly send the image data stored in the android host to the liquid crystal display for display, and also can receive the image signal sent by the display control device, and sends the image data in the image signal to the liquid crystal display for display after analyzing the image signal. The display control device is a PC host, and the system of the PC host can be a Windows system, a Linux system and the like. Fig. 2 is a schematic structural diagram of the present embodiment.
According to the method for turning off the display device, the display device detects the state of the display control device, and immediately requests the power control device to turn off when the display control device is detected to be turned off, so that the power control device can turn off the display device immediately after the display control device is turned off, and waste of resources is reduced. Because the display device is closed immediately after the display control device is closed, the user can close the display device while closing the display control device, thereby improving the user experience. The state of the display control device can be judged by judging the state of the CLK signal or the power supply signal in the HDMI, and the judging method is simple and quick, so that the rate of the process of closing the display device can be increased, the waste of resources is further reduced, and the user experience is improved. In addition, the state of the display control device is detected before the display device is closed, so that the display device can be ensured to be closed when the display control device is closed, the closing accuracy is improved, and the damage to the device and the loss of data are avoided.
Accordingly, the present invention further provides a closing apparatus for a display device, which can implement all the processes of the closing method for a display device in the above embodiments.
Referring to fig. 3, it is a schematic structural diagram of an embodiment of a closing device of a display device provided in the present invention, and the detailed description is as follows:
a closing request receiving module 31, configured to receive a closing request sent by the display apparatus when the image signal sent by the display control apparatus is not detected;
a ready notification receiving module 32, configured to notify the display apparatus to perform a closing preparation according to the closing request, and receive a ready notification sent by the display apparatus after the closing preparation is completed; and the number of the first and second groups,
and a display device closing module 33, configured to power off the display device according to the ready notification.
Further, the closing request receiving module 31 specifically includes:
a first close request receiving unit configured to receive a close request transmitted by the display apparatus when detecting that a CLK signal in an HDMI connecting the display apparatus and the display control apparatus is a direct current signal; alternatively, the first and second electrodes may be,
a second off request receiving unit that receives an off request transmitted by the display apparatus when detecting that a power supply signal in an HDMI connecting the display apparatus and the display control apparatus is a low level signal.
Further, the ready notification receiving module 32 specifically includes:
the data storage instruction sending unit is used for generating a data storage instruction according to the closing request and sending the data storage instruction to the display device; and the number of the first and second groups,
and the notification receiving unit is used for receiving a ready notification sent by the display device after the display device receives the data storage instruction and completes data storage according to the data storage instruction.
Further, the data storage instruction sending unit specifically includes:
a device state detection subunit, configured to detect a state of the display control device according to the shutdown request; and the number of the first and second groups,
and the instruction sending subunit is used for generating the data storage instruction and sending the data storage instruction to the display device when the state of the display control device is detected to be the closed state.
Referring to fig. 4, it is a schematic structural diagram of an embodiment of the display system provided in the present invention, including a power control device 41, a display control device 42 and a display device 43;
the power supply control device 41 is a shutdown device of the display device according to any one of claims 6 to 10;
the display control device 42 is used for sending image signals to the display device 43;
the display device 43 is configured to detect an image signal sent by the display control device 42, and generate and display a corresponding image according to the image signal when the image signal is detected, or send a shutdown request to the power control device 41 when the image signal is not detected.
It should be noted that, the embodiment of the present invention is described by taking the power control device as an example, but in a specific implementation, the power control device may also be connected with a plurality of display devices at the same time, and the number of the display devices may be configured according to practical applications.
According to the closing device and the display system of the display device, the display device detects the state of the display control device, and immediately requests the power supply control device to close when the display control device is detected to be closed, so that the power supply control device can immediately close the display device after the display control device is closed, and the waste of resources is reduced. Because the display device is closed immediately after the display control device is closed, the user can close the display device while closing the display control device, thereby improving the user experience. The state of the display control device can be judged by judging the state of the CLK signal or the power supply signal in the HDMI, and the judging method is simple and quick, so that the rate of the process of closing the display device can be increased, the waste of resources is further reduced, and the user experience is improved. In addition, the state of the display control device is detected before the display device is closed, so that the display device can be ensured to be closed when the display control device is closed, the closing accuracy is improved, and the damage to the device and the loss of data are avoided.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention.
Claims (6)
1. A method for turning off a display device, comprising:
the power control device receives a closing request sent by the display device when the display device cannot detect the image signal sent by the display control device;
the power supply control device informs the display device of closing preparation according to the closing request and receives a ready notice sent by the display device after the closing preparation is completed;
the power supply control device cuts off the power of the display device according to the ready notice;
wherein, according to the close request, notifying the display device to perform close preparation, and receiving a ready notification sent by the display device after completing the close preparation, specifically includes:
generating a data storage instruction according to the closing request, and sending the data storage instruction to the display device;
receiving a ready notice sent by the display device after the display device receives the data storage instruction and completes data storage according to the data storage instruction;
the receiving of the shutdown request sent by the display device when the image signal sent by the display control device is not detected specifically includes:
receiving a closing request sent by the display device when the display device detects that a CLK signal in an HDMI connecting the display device and the display control device is a direct current signal; alternatively, the first and second electrodes may be,
receiving a shutdown request transmitted by the display device when detecting that a power supply signal in the HDMI connecting the display device and the display control device is a low-level signal.
2. The method according to claim 1, wherein the generating a data storage instruction according to the shutdown request and sending the data storage instruction to the display device specifically includes:
detecting the state of the display control device according to the closing request;
and when the display control device is detected to be in the closed state, generating the data storage instruction, and sending the data storage instruction to the display device.
3. The method of turning off the display device according to claim 1 or 2, wherein the turn-off request and the ready notification are both transmitted through USB; the display device comprises an android host and a liquid crystal display which are connected with each other; the android host comprises an android main chip for processing image signals; the display control device is a PC host.
4. A closing apparatus of a display device, comprising:
a closing request receiving module, configured to receive a closing request sent by a display device when the display device does not detect an image signal sent by a display control device;
a ready notification receiving module, configured to notify the display device to perform a closing preparation according to the closing request, and receive a ready notification sent by the display device after the closing preparation is completed; and the number of the first and second groups,
the display device closing module is used for powering off the display device according to the ready notice;
the ready notification receiving module specifically includes:
the data storage instruction sending unit is used for generating a data storage instruction according to the closing request and sending the data storage instruction to the display device; and the number of the first and second groups,
a notification receiving unit, configured to receive a ready notification sent by the display device after receiving the data storage instruction and completing data storage according to the data storage instruction;
the closing request receiving module specifically includes:
a first close request receiving unit configured to receive a close request transmitted by the display apparatus when detecting that a CLK signal in an HDMI connecting the display apparatus and the display control apparatus is a direct current signal; alternatively, the first and second electrodes may be,
a second off request receiving unit that receives an off request transmitted by the display apparatus when detecting that a power supply signal in an HDMI connecting the display apparatus and the display control apparatus is a low level signal.
5. The shutdown device for a display device according to claim 4, wherein the data storage instruction sending unit specifically includes:
a device state detection subunit, configured to detect a state of the display control device according to the shutdown request; and the number of the first and second groups,
and the instruction sending subunit is used for generating the data storage instruction and sending the data storage instruction to the display device when the state of the display control device is detected to be the closed state.
6. A display system is characterized by comprising a power supply control device, a display control device and a display device;
the power supply control device is a turn-off device of the display device according to claim 4 or 5;
the display control device is used for sending an image signal to the display device;
the display device is used for detecting the image signal sent by the display control device and generating and displaying a corresponding image according to the image signal when the image signal is detected, or sending a closing request to the power supply control device when the image signal is not detected.
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| CN201946269U (en) * | 2010-12-28 | 2011-08-24 | 浙江万国电子科技有限公司 | Automatic control system for power switch of light emitting diode (LED) display screen |
| CN105302285A (en) * | 2014-08-01 | 2016-02-03 | 福州瑞芯微电子股份有限公司 | Multi-screen display method, equipment and system |
| CN105929922A (en) * | 2016-04-13 | 2016-09-07 | 合肥联宝信息技术有限公司 | Electronic device |
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| JP4712786B2 (en) * | 2007-12-13 | 2011-06-29 | 京セラ株式会社 | Information processing device |
| CN104133543A (en) * | 2013-05-02 | 2014-11-05 | 华硕电脑股份有限公司 | Portable electronic device |
| CN104932348A (en) * | 2015-05-26 | 2015-09-23 | 成都市斯达鑫辉视讯科技有限公司 | Automatic switch-on and switch-off system for display screen |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN201946269U (en) * | 2010-12-28 | 2011-08-24 | 浙江万国电子科技有限公司 | Automatic control system for power switch of light emitting diode (LED) display screen |
| CN105302285A (en) * | 2014-08-01 | 2016-02-03 | 福州瑞芯微电子股份有限公司 | Multi-screen display method, equipment and system |
| CN105929922A (en) * | 2016-04-13 | 2016-09-07 | 合肥联宝信息技术有限公司 | Electronic device |
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