CN113467729B - Electronic device and multi-screen display method - Google Patents
Electronic device and multi-screen display method Download PDFInfo
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- CN113467729B CN113467729B CN202010245994.9A CN202010245994A CN113467729B CN 113467729 B CN113467729 B CN 113467729B CN 202010245994 A CN202010245994 A CN 202010245994A CN 113467729 B CN113467729 B CN 113467729B
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/14—Digital output to display device ; Cooperation and interconnection of the display device with other functional units
Abstract
The invention provides an electronic device and a multi-screen display method. The multi-screen display method is suitable for the electronic device. In response to connecting to the portable electronic device, display specification data of the portable electronic device is obtained. And writing the display specification data into the memory in response to the recorded data of the memory in the electronic device not conforming to the display specification data. The switching device is connected between the graphic processor and the memory, so that the graphic processor reads the display specification data in the memory through the switching device. The image data is generated by the image processor according to the display specification data, and is provided for the portable electronic device to be displayed. Therefore, the portable electronic device can provide good display effect.
Description
Technical Field
The present invention relates to multi-screen applications, and more particularly, to an electronic device and a multi-screen display method.
Background
With the increase of information processing, single-screen notebook computers have not been able to meet the demands of workers. It has been a common operating scenario for users of notebook computers to use multiple screens to increase work efficiency. Generally, a user in an office can connect a notebook computer to another desktop display to increase the working efficiency by using a multi-screen display function. However, users at the outside office cannot carry with them a desktop display that is bulky, and thus it is more difficult to enjoy the convenience of the multi-screen display function. Accordingly, with the popularization of portable electronic devices (such as smart phones or tablet computers), the application of these portable electronic devices with display functions as portable screens is becoming more and more important. The user can connect the portable electronic device to the notebook computer, so that the user can watch the screen of the notebook computer and the screen of the portable electronic device at the same time, and the multi-screen display application is realized accordingly.
However, the portable electronic devices in the market have different hardware specifications. When the portable electronic device is used as an extended screen, the user needs to manually set the display specification (such as screen resolution and screen update rate) of the output frame by himself, and cannot automatically generate the corresponding output frame according to the display specification of the portable electronic device. If the setting is bad, the display of the portable electronic device is easily distorted or inferior to the expected display of the user, resulting in poor user experience.
Disclosure of Invention
In view of the above, the present invention provides an electronic device and a multi-screen display method, which can automatically detect the display hardware specification of the portable electronic device, so that the portable electronic device provides a good display effect.
The embodiment of the invention provides a multi-screen display method which is suitable for an electronic device and comprises the following steps of. In response to connecting to the portable electronic device, display specification data of the portable electronic device is obtained. And writing the display specification data into the memory in response to the recorded data of the memory in the electronic device not conforming to the display specification data. The switching device is connected between the graphic processor and the memory, so that the graphic processor reads the display specification data in the memory through the switching device. The image data is generated by the image processor according to the display specification data, and is provided for the portable electronic device to be displayed.
The embodiment of the invention provides an electronic device which comprises a connecting device, a processor, a memory, a microcontroller, a switching device, a basic input/output unit and a graphic processor. The processor is coupled with the connecting device and responds to the connection to the portable electronic device through the connecting device to acquire the display specification data of the portable electronic device. The micro controller is coupled with the memory, and the switching device is coupled with the memory, the micro controller and the graphic processor. The basic input/output unit is coupled with the processor and the microcontroller. And the basic input/output unit writes the display specification data into the memory through the microcontroller in response to the recorded data of the memory not conforming to the display specification data. The basic input output unit is switched by the switching device connected between the graphic processor and the memory through the microcontroller, so that the graphic processor reads the display specification data in the memory through the switching device. The graphic processor generates picture data according to the display specification data, and the processor provides the picture data for the portable electronic device to display through the connecting device.
Based on the above, in the embodiment of the invention, the portable electronic device automatically provides the hardware specification information to the electronic device, so that the electronic device can ensure that the recorded data in the memory accords with the display specification data of the portable electronic device. Then, by switching the switching device connected between the graphics processor and the memory, the graphics processor can read the display specification data in the memory and generate the picture data accordingly. Therefore, the portable electronic device can display according to the picture data conforming to the hardware condition of the portable electronic device, so that the user setting step can be simplified, and a good display effect can be provided.
In order to make the above features and advantages of the present invention more comprehensible, embodiments accompanied with figures are described in detail below.
Drawings
The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification. The drawings illustrate embodiments of the invention and, together with the description, serve to explain the principles of the invention.
FIG. 1 is a schematic diagram of a multi-screen display system according to an embodiment of the invention;
FIG. 2 is a schematic diagram of an electronic device according to an embodiment of the invention;
FIG. 3 is a flow chart of a multi-screen display method according to an embodiment of the invention;
fig. 4 is a schematic diagram of a multi-screen display method according to an embodiment of the invention.
Description of the reference numerals
10, a multi-screen display system;
110 an electronic device;
111, a connecting device;
112, a processor;
113, a memory;
114, a microcontroller;
115, switching means;
116, a basic input/output unit;
117 graphics processor;
118 storage means;
119 a display;
120, a portable electronic device;
121, a display;
s1, s2, picture data;
d1, hardware specification data;
i1, a data transmission interface;
m, P, Q path;
v1 is voltage;
a1, A2, application programs;
s301 to S304.
Detailed Description
Reference will now be made in detail to the exemplary embodiments of the present invention, examples of which are illustrated in the accompanying drawings. Wherever possible, the same reference numbers will be used throughout the drawings and the description to refer to the same or like parts.
FIG. 1 is a schematic diagram of a multi-screen display system according to an embodiment of the invention. Referring to fig. 1, the multi-screen display system 10 includes an electronic device 110 and a portable electronic device 120. The electronic device 110 has a graphics processor supporting a multi-screen display function, such as a desktop computer, a notebook computer, etc., which is not limited by the present invention. The portable electronic device 120 has a display function, such as a tablet computer, a smart phone, a personal digital assistant, an electronic book or a game console, etc., which is not limited by the present invention.
The electronic device 110 is connected to the portable electronic device 120 via the data transmission interface I1, and the data transmission interface I1 is, for example, a wireless/wired communication interface or a wired bus interface, which is not limited in the present invention. For example, the data transmission interface I1 may be a universal serial bus (Universal Serial Bus, USB) interface or a WiFi communication interface, etc.
In one embodiment, the portable electronic device 120 is used as an extended screen of the electronic device 110, and the multi-screen display system 10 implements multi-screen application through the display 121 of the portable electronic device 120 and the display 119 of the electronic device 110. In an embodiment, after the electronic device 110 establishes a connection with the portable electronic device 120 through the data transmission interface I1, the portable electronic device 120 can provide its hardware specification data d1 to the electronic device 110 through the data transmission interface I1, wherein the hardware specification data d1 includes hardware specifications of the display 121 of the portable electronic device 120, such as a screen resolution and a screen update rate. The electronic device 110 can generate the frame data s1 according to the hardware specification of the display 121, and provide the frame data s1 to the portable electronic device 120 for displaying. Therefore, the user does not need to manually utilize the electronic device 110 or the portable electronic device 120 to perform the display setting of the extended screen, and the electronic device 110 can automatically provide suitable frame data for the hardware specification of the portable electronic device 120, so that the portable electronic device 120 can provide a good display effect.
Fig. 2 is a schematic diagram of an electronic device according to an embodiment of the invention. Referring to fig. 2, the electronic device 110 includes a connection device 111, a processor 112, a memory 113, a microcontroller 114, a switching device 115, a basic input output unit 116, a graphics processor 117, a storage device 118, and a display 119.
The connection device 111 is used for providing connection between the electronic device 110 and the portable electronic device 120 and transmitting data. The connection device 111 is an electronic component such as a wireless network communication chip and an antenna supporting bluetooth communication protocol and Wi-Fi communication protocol, but the present invention is not limited thereto. Alternatively, the connection device 111 may be a wired data transmission interface, such as an ethernet component, a USB interface component, etc., but the present invention is not limited thereto. The electronic device 110 may transmit data to the portable electronic device 120 through the connection device 111, or may receive data from the portable electronic device 120 through the connection device 111.
The memory 113 is, for example, a nonvolatile memory such as an erasable programmable read-only memory (Erasable Programmable Read Only Memory, EPROM), an EEPROM (Electrically Erasable Programmable Read Only Memory, EEPROM), or a Flash memory, which is not limited in this aspect of the invention.
The microcontroller 114 is, for example, an embedded controller (Embedded Controller, EC) of the electronic device 110 or other control chip with computing capability.
The switching device 115 is coupled to the memory 113, the microcontroller 114 and the graphics processor 117. The switching device 115 may be implemented using a complex programmable logic device (Complex Programmable Logic Devic, CPLD) or field programmable gate array (Field Programmable Gate Array, FPGA) in addition to a combination of transistors, and the invention is not limited to this implementation.
The basic input output unit 116 is coupled to the processor 112 and the microcontroller 114. The BIOS unit 116 is a Non-volatile Memory (Non-volatile Memory), such as a Read Only Memory (ROM) or a Flash Memory (Flash Memory), in which the most basic hardware program code for loading the computer system, i.e., the BIOS (Basic Input Output System), is stored.
Graphics processor (graphic processing unit, GPU) 117 provides multi-screen display functionality that can generate image data for multiple displays. In this embodiment, the graphic processor 117 can generate the frame data provided to the display 119 and the frame data provided to the display 121, so that the display 119 and the display 121 can display simultaneously.
The processor 112 is coupled to the storage device 118, the connection device 111, the basic input output unit 116, and the graphics processor 117. The processor 112 may be a central processing unit (Central Processing Unit, CPU) with a single or multiple cores, or other general purpose or special purpose Microprocessor (Microprocessor), digital signal processor (Digital Signal Processor, DSP), programmable controller, application specific integrated circuit (Application Specific Integrated Circuit, ASIC), or other similar component or combination of components. The processor 112 is used to access various software components loaded into the storage device 118. For example, the processor 112 may execute applications and an operating system in the storage 118 to implement the multi-screen display method of the embodiments of the present invention.
The storage device 118 is, for example, any type of fixed or removable random access Memory (Random Access Memory, RAM), read-Only Memory (ROM), flash Memory (Flash Memory), hard disk, or other similar device or combination of devices for storing data. The storage device 118 may load various software components (e.g., operating systems, applications, drivers, various instructions, etc.) and data for execution and deployment by the processor 112.
The display 119 is, for example, a liquid crystal display (Liquid Crystal Display, LCD), a Light-Emitting Diode (LED) display, a field emission display (Field Emission Display, FED), an Organic Light-Emitting Diode (OLED) display, or other kinds of displays, to which the present invention is not limited.
To further illustrate the multi-screen display method, the following describes the present invention by specifically using an embodiment. Fig. 3 is a flowchart of a multi-screen display method according to an embodiment of the invention, please refer to fig. 2-3. The method of the present embodiment is applicable to the electronic device 110 in fig. 2, and the detailed flow of the method of the present embodiment will be described below with respect to each component in the electronic device 110.
In step S301, in response to connecting to the portable electronic device 120 through the connection device 111, the processor 112 obtains the display specification data of the portable electronic device 120. The display specification data includes extended display capability identification data (Extended display identification data, EDID). In one embodiment, in response to being connected to the portable electronic device 120 through the connection device 111, the processor 112 receives hardware specification information from the portable electronic device 120 and converts the hardware specification information of the portable electronic device 120 into display specification data. It should be noted that the electronic device 110 may be directly connected to the portable electronic device 120 via a USB interface or other wired data transmission medium, or the electronic device 110 and the portable electronic device 120 under the same lan may be connected via a WiFi access point, but the present invention is not limited thereto.
In step S302, in response to the recorded data of the memory 113 not meeting the display specification data, the bios 116 writes the display specification data into the memory 113 through the microcontroller 114. In one embodiment, in response to the memory 113 not including the record data, the bios 116 writes the display specification data to the memory 113 through the microcontroller 114. In response to the recorded data in the memory 113 being different from the display specification data, the bios 116 updates the recorded data in the memory 113 with the display specification data through the microcontroller 114. Specifically, the processor 112 compares whether the display specification data of the portable electronic device 120 is the same as the record data in the memory 113. When the record data of the memory 113 does not conform to the display specification data (i.e. the record data of the memory 113 does not exist or is different from the display specification data of the portable electronic device 120), the processor 112 notifies the bios 116 to update the record data in the memory 113. Then, the basic input output unit 116 will write the display specification data into the memory 113 through the microcontroller 114 to update the record data in the memory 113. It should be noted that the switching device 115 turns on the path Q between the microcontroller 114 and the memory 113, so that the microcontroller 114 can read or refresh the recorded data in the memory 113. Path Q may be implemented by an I2C (Inter-Integrated Circuit) communication interface.
Next, in step S303, the bios 116 switches the switching device 115 connected between the graphics processor 117 and the memory 113 through the microcontroller 114, so that the graphics processor 117 reads the display specification data in the memory 113 through the switching device 115. The switching device 115 turns on the path P between the graphics processor 117 and the memory 113, so that the graphics processor 117 can read the display specification data in the memory 113 via the path P. Path P may be implemented by an I2C communication interface, i.e., the graphics processor 117 may read the display specification data in the memory 113 via the I2C interface. It is understood that the switching device 115 may connect the I2C port of the memory 113 to the I2C port of the graphics processor 117 or the I2C port of the microcontroller 114 in response to the control signal provided to the controller 114 to turn on the path P or the path Q.
In one embodiment, the switching device 115 is switched by the micro controller 114 through the bios 116 while the path P is turned on, so that the graphics processor 117 receives a hot plug detection (Hot Plug Detection) signal associated with the portable electronic device 120 to turn on the multi-screen display function. In detail, the graphics processor 117 detects the presence of the external display through the hot plug detection signal received by the specific Pin (Pin), so as to turn on the multi-screen display function. In one embodiment, the switching device 115 may switch on the path M between the voltage V1 (e.g., 5V) and the graphics processor 117, so that a specific pin of the graphics processor 117 may receive a hot plug detection signal associated with the portable electronic device 120 and activate the multi-screen display function in response to the hot plug detection signal.
Finally, in step S304, the graphic processor 117 with the multi-screen display function is turned on to generate the frame data S2 according to the display specification data, and the processor 112 provides the frame data S2 to the portable electronic device 120 for display via the connection device 111. Specifically, the processor converts the frame data s2 generated by the graphics processor 117 into a streaming data format, and streams the frame data s2 to the portable electronic device 120 for display.
It should be noted that, in one embodiment, the bios 116 does not write the display specification data into the memory 113 through the microcontroller 114 in response to the recorded data of the memory 113 conforming to the display specification data. Specifically, when the record data of the memory 113 is the same as the display specification data of the portable electronic device 120, the steps S303 and S304 can be directly performed successively.
In one application scenario, a user connects a notebook computer to a tablet computer and uses the tablet computer with handwriting function to perform a mapping operation. When the notebook computer is connected to the tablet computer by using the multi-screen display function for the first time, the notebook computer can detect that the screen resolution of the tablet computer is 1920×1080 and the screen update rate is 60fps, and the notebook computer records the display specification data (i.e. the screen resolution is 1920×1080 and the screen update rate is 60 fps) of the tablet computer in an electronic erasable and rewritable read-only memory (EEPROM). Thus, the notebook computer can generate the image data with the image resolution of 1920×1080 and the image update rate of 60fps, and project the image data on the tablet computer. Later, if the user connects the notebook computer to another tablet computer, the notebook computer will detect that the screen resolution of the other tablet computer is 3840×2160 and the screen update rate is 60fps. In response to the notebook computer determining that the display specification data of the other tablet computer is different from the record data in the EEPROM (i.e., the screen resolution is 1920×1080), the notebook computer uses the screen resolution 3840×2160 of the other tablet computer to refresh the record data in the EEPROM. In this way, the electronic device generates the frame data with the frame resolution of 3840×2160 and the frame update rate of 60fps according to the refreshed recorded data, and projects the frame data onto another tablet computer.
Fig. 4 is a schematic diagram of a multi-screen display method according to an embodiment of the invention. It should be noted that, in the present embodiment, the electronic device 110 and the portable electronic device 120 execute the application program A1 and the application program A2 respectively to implement the multi-screen display method.
Referring to fig. 4, in step (1), the application A1 of the electronic device 110 establishes a connection with the application A2 of the portable electronic device 120, and the application A2 can obtain the hardware specification information (such as the screen resolution screen update rate and other hardware information) of the portable electronic device 120 and provide the hardware specification information to the application A1.
In step (2), the application program A1 converts the hardware specification information of the portable electronic device 120 into the current EDID, and determines whether the current EDID is the same as the recorded EDID in the memory 113. In step (3), if the current EDID is different from the recorded EDID in the memory 113, the application A1 notifies the bios 116 to update the recorded EDID in the memory 113 through a window management specification (Windows Management Instrumentation, WMI) instruction.
In step (4), the bios 116 writes the current EDID to the memory 113 via the I2C interface through the microcontroller 114 to update the record data of the memory 113. In step (5), in response to the current EDID being written into the memory 113, the bios 116 notifies the application A1 that the current EDID writing operation has been completed through the WMI command.
In step (6), the application A1 notifies the bios 116 to enable the multi-screen display function of the graphic processor 117 through the WMI instruction. In step (7), the bios 116 switches the switching device through the micro controller 114 to enable the multi-screen display function of the graphic processor 117 and generate the frame data according to the current EDID in the memory 113. In step (8), the bios 116 notifies the application A1 that the multi-screen display function is enabled through the WMI command. In step (9), the application A1 uses Microsoft DirectX to retrieve the frame data from the graphics processor 117 and streams the frame data to the application A2 of the portable electronic device 120 for display.
In summary, in the embodiment of the invention, the display specification data of the portable electronic device is detected through the cooperation of the software and the hardware, so that the electronic device can ensure that the recorded data in the memory is consistent with the display specification data of the portable electronic device. Then, by switching the switching device connected between the graphics processor and the memory, the graphics processor can read the display specification data in the memory and generate the picture data accordingly. Therefore, the portable electronic device can display according to the picture data conforming to the hardware condition of the portable electronic device, thereby greatly simplifying the operation steps of display setting and improving the use convenience of the multi-screen display function
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the invention.
Claims (12)
1. A multi-screen display method suitable for an electronic device, the method comprising:
acquiring display specification data of a portable electronic device in response to connection to the portable electronic device;
writing the display specification data into a memory in the electronic device in response to the recorded data of the memory not conforming to the display specification data;
switching a switching device connected between a graphics processor and the memory, causing the graphics processor to read the display specification data in the memory via the switching device, wherein the switching device turns on a path between the graphics processor and the memory or turns on a path between a microcontroller and the memory, while connecting a port of the memory to the graphics processor or the microcontroller; and
generating, by the graphics processor, picture data according to the display specification data, and providing the picture data to the portable electronic device for display.
2. The multi-screen display method of claim 1, wherein the display specification data includes extended display capability identification data.
3. The multi-screen display method of claim 2, wherein the step of obtaining the display specification data of the portable electronic device in response to being connected to the portable electronic device comprises:
receiving hardware specification information from the portable electronic device in response to being connected to the portable electronic device; and
and converting the hardware specification information of the portable electronic device into the display specification data.
4. The multi-screen display method according to claim 2, wherein the graphic processor reads the display specification data in the memory via an I2C interface.
5. The multi-screen display method of claim 1, wherein responsive to the recorded data of the memory in the electronic device not conforming to the display specification data, writing the display specification data to the memory comprises:
writing the display specification data to the memory in response to the memory not including the record data; and
and updating the record data in the memory by using the display specification data in response to the record data in the memory being different from the display specification data.
6. The multi-screen display method of claim 1, wherein the method further comprises:
the switching device is switched to enable the graphic processor to receive a hot plug detection signal associated with the portable electronic device so as to start a multi-screen display function.
7. An electronic device, comprising:
a connecting device;
the processor is coupled with the connecting device and responds to the connection to the portable electronic device through the connecting device to acquire the display specification data of the portable electronic device;
a memory;
a microcontroller;
a switching device coupled to the memory and the microcontroller;
the basic input and output unit is coupled with the processor and the microcontroller, and responds to the fact that the recorded data of the memory does not accord with the display specification data, the display specification data is written into the memory through the microcontroller; and
a graphics processor coupled to the switching device,
wherein the basic input output unit switches the switching device connected between the graphics processor and the memory through the microcontroller, causes the graphics processor to read the display specification data in the memory via the switching device, the switching device conducts a path between the graphics processor and the memory or conducts a path between the microcontroller and the memory, and connects a port of the memory to the graphics processor or the microcontroller,
the graphic processor generates picture data according to the display specification data, and the processor provides the picture data to the portable electronic device for display through the connecting device.
8. The electronic device of claim 7, wherein the display specification data comprises extended display capability identification data.
9. The electronic device of claim 8, wherein in response to being connected to the portable electronic device, the processor receives hardware specification information from the portable electronic device and converts the hardware specification information of the portable electronic device into the display specification data.
10. The electronic device of claim 8, wherein the graphics processor reads the display specification data in the memory via an I2C interface.
11. The electronic device of claim 7, wherein the bios writes the display specification data to the memory through the microcontroller in response to the memory not including the record data; and in response to the recorded data in the memory being different from the display specification data, the basic input output unit updates the recorded data in the memory with the display specification data through the microcontroller.
12. The electronic device of claim 7, wherein the basic input output unit switches the switching device through the microcontroller, causing the graphics processor to turn on a multi-screen display function upon receiving a hot plug detect signal associated with the portable electronic device.
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| TWI647611B (en) * | 2017-10-02 | 2019-01-11 | 廣積科技股份有限公司 | Smart Extended Display Identification Data Simulator |
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| CN101802774A (en) * | 2007-09-20 | 2010-08-11 | 苹果公司 | Between graphics sources, switch so that realize power management and/or security |
| CN102455886A (en) * | 2011-07-05 | 2012-05-16 | 中标软件有限公司 | Method for dynamically identifying and configuring external display |
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