Display terminal and display terminal system based on application processor

Abstract

The utility model discloses a display terminal and a display terminal system based on an application processor. The display terminal comprises an HDMI interface, the application processor, a screen lighting module and a display screen. The HDMI interface is used for connecting electronic equipment; the application processor is used for generating a first image signal; a first input interface of the screen lighting module is connected with the HDMI interface, a second input interface of the screen lighting module is connected with a first output interface of the application processor, and the screen lighting module is used for receiving an HDMI signal and / or a first image signal and converting the HDMI signal or the first image signal into a second image signal; and the display screen is connected with the first output interface of the screen lighting module and is used for displaying image information based on the received second image signal. The display terminal is provided with the HDMI interface, the screen lighting module supports and receives two paths of image input signals from the application processor and the HDMI interface, and one path of signal is converted into an image signal format supported by the display screen, so that the display terminal based on the application processor supports an external HDMI signal playing function.

Description

Technical Field

[0001] The present application relates to the field of display terminals, and in particular to a display terminal and a display terminal system based on an application processor. Background Art

[0002] High Definition Multimedia Interface (HDMI) can send uncompressed audio and image signals at the same time. Display terminals such as TVs, monitors and projectors can display images based on HDMI signals transmitted by the HDMI interface.

[0003] Display terminals equipped with application processors (APs) can provide users with services such as touch interaction, web browsing, and video playback. In related technologies, APs can generate video signals based on network resources or local storage resources, but APs do not support processing HDMI signals. Therefore, display terminals based on APs usually do not support external HDMI signal playback. Utility Model Content

[0004] In view of this, an embodiment of the present application provides a display terminal and a display terminal system based on an application processor, aiming to enable the display terminal based on the application processor to support an external HDMI signal playback function.

[0005] The technical solution of the embodiment of the present application is implemented as follows:

[0006] In a first aspect, an embodiment of the present application provides a display terminal based on an application processor, the display terminal comprising:

[0007] HDMI interface, used to connect electronic devices;

[0008] AP, configured to generate a first image signal;

[0009] A point screen module, wherein a first input interface of the point screen module is connected to the HDMI interface, and a second input interface of the point screen module is connected to a first output interface of the AP, for receiving an HDMI signal sent by the electronic device and / or a first image signal sent by the AP, and converting the HDMI signal or the first image signal into a second image signal;

[0010] A display screen, which is connected to the first output interface of the dot screen module, is used to receive the second image signal sent by the dot screen module, and display image information based on the received second image signal.

[0011] In some embodiments, the screen point module includes:

[0012] A multi-channel selection module, the multi-channel selection module is respectively connected to the first input interface and the second input interface of the dot screen module, and is used to receive the HDMI signal and / or the first image signal, and select one of the signals for output;

[0013] An image processing module is provided between the multi-channel selection module and the first output interface of the dot screen module, and is used for converting the output signal of the multi-channel selection module into the second image signal.

[0014] In some embodiments, the image processing module includes:

[0015] A signal conversion module, the signal conversion module is connected to the multi-channel selection module and is used to convert the output signal of the multi-channel selection module into a third image signal in a format supported by the display screen;

[0016] A correction module, the correction module is connected to the signal conversion module, and is used to convert the third image signal into the second image signal of a set resolution.

[0017] In some embodiments, the screen point module further includes:

[0018] A digital-to-analog conversion module is connected to the multi-channel selection module and is used to convert the HDMI signal output by the multi-channel selection module into a first audio signal.

[0019] In some embodiments, the display terminal further includes:

[0020] A speaker, for playing audio based on a received audio signal;

[0021] A first switch, wherein the input interface of the first switch is connected to the second output interface of the AP and the second output interface of the screen-pointing module, the output interface of the first switch is connected to the speaker, and the first switch is used to connect the AP and the speaker, or to connect the screen-pointing module and the speaker; the AP is also used to generate a second audio signal.

[0022] In some implementations, the digital-to-analog conversion module is connected to the input interface of the first switch via the second output interface of the dot-screen module.

[0023] In some embodiments, the control interface of the screen-pointing module is connected to the first switch, and the screen-pointing module further includes: a control module for controlling the switching state of the first switch.

[0024] In some embodiments, the point screen module is connected to the AP via a digital video interface (DisplayPort, DP).

[0025] In some embodiments, the dot screen module is connected to the display screen via an embedded digital video interface (Embedded Display Port, eDP).

[0026] In a second aspect, an embodiment of the present application provides a display terminal system, the system comprising: the display terminal as described in the first aspect and an electronic device, the electronic device being used to send an HDMI signal.

[0027] The display terminal provided in the present application includes: an HDMI interface, an AP, a point screen module and a display screen, wherein the HDMI interface is used to connect an electronic device; the AP is used to generate a first image signal; the first input interface of the point screen module is connected to the HDMI interface, the second input interface of the point screen module is connected to the first output interface of the AP, the point screen module is used to receive an HDMI signal sent by the electronic device and / or a first image signal sent by the AP, and convert the HDMI signal or the first image signal into a second image signal; the display screen is connected to the first output interface of the point screen module, the display screen is used to receive the second image signal sent by the point screen module, and display image information based on the received second image signal. In this way, the display terminal based on the AP sets an HDMI interface, and the point screen module supports receiving two-way image input signals from the AP and the HDMI interface, and converts one of the signals into an image signal in a format supported by the display screen, so as to realize that the display terminal based on the AP supports the external HDMI signal playback function. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is a schematic diagram showing the structure of a terminal according to an embodiment of the present application;

[0029] Figure 2 This is a schematic diagram showing the structure of a terminal according to another embodiment of the present application;

[0030] Figure 3 This is a schematic diagram of the structure of the image processing module in the embodiment of the present application;

[0031] Figure 4 This is a schematic diagram showing the structure of a terminal according to another embodiment of the present application;

[0032] Figure 5 This is a schematic diagram of the structure of a display terminal according to yet another embodiment of the present application. DETAILED DESCRIPTION

[0033] The present application is further described in detail below in conjunction with the accompanying drawings and embodiments.

[0034] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present application. The terms used herein in the specification of the present application are only for the purpose of describing specific embodiments and are not intended to limit the present application.

[0035] This application provides a display terminal based on AP, such as Figure 1 As shown. The display terminal includes: an HDMI interface 1, an AP 2, a dot screen module 3 and a display screen 4. The HDMI interface 1 is used to connect an electronic device 5; the AP 2 is used to generate a first image signal; the first input interface of the dot screen module 3 is connected to the HDMI interface 1, the second input interface of the dot screen module 3 is connected to the first output interface of the AP 2, the dot screen module 3 is used to receive the HDMI signal sent by the electronic device 5 and / or the first image signal sent by the AP 2, and convert the HDMI signal or the first image signal into a second image signal; the display screen 4 is connected to the first output interface of the dot screen module 3, the display screen 4 is used to receive the second image signal sent by the dot screen module 3, and display image information based on the received second image signal.

[0036] Here, AP 2 is one of the processors provided in the display terminal of the embodiment of the present application. AP 2 generates a first video signal based on network resources and / or local storage resources, wherein the first video signal includes a first image signal.

[0037] Here, the display terminal of the embodiment of the present application includes a mobile display terminal such as a tablet computer and a mobile smart screen. The display terminal can provide a video playback service to the user based on the first video signal generated by AP 2.

[0038] It should be noted that in the related art, since the video signal used for video playback by the AP-based display terminal is generated by the AP, but the AP does not support processing of HDMI signals, the AP-based display terminal usually does not have an HDMI interface and does not support the HDMI signal playback function.

[0039] It should be noted that the dot screen module 3 is connected to the external electronic device 5 based on the HDMI interface 1, can receive the HDMI signal sent by the electronic device 5, and supports converting the received HDMI signal into a second image signal in a format supported by the display screen 4.

[0040] It is understandable that the screen module 3 can also receive the first image signal sent by the AP 2 and support converting the received first image signal into a second image signal in a format supported by the display screen 4 .

[0041] It can be understood that the display terminal in the embodiment of the present application is provided with an HDMI interface 1, supports receiving two image input signals from the AP 2 and the HDMI interface 1, supports converting the received first image signal into an image signal in a format supported by the display screen 4 or converting the received HDMI signal into an image signal in a format supported by the display screen 4, thereby realizing the AP-based display terminal supporting the external HDMI signal playback function.

[0042] It should be noted that the HDMI interface 1 of the embodiment of the present application supports the HDMI2.1 specification and is compatible with the HDMI2.0 specification and the HDMI1.4 specification.

[0043] In an application example of the present application, the display resolution supported by the display screen 4 is 4K.

[0044] For example, Figure 2 As shown, the point screen module 3 includes: a multi-channel selection module 31 and an image processing module 32. The multi-channel selection module 31 is respectively connected to the first input interface and the second input interface of the point screen module 3, and is used to receive the HDMI signal and / or the first image signal, and select one of the signals for output; the image processing module 32 is arranged between the multi-channel selection module 31 and the first output interface of the point screen module 3, and is used to convert the output signal of the multi-channel selection module 31 into a second image signal.

[0045] It is understandable that when the first image signal of the AP 2 and the HDMI signal of the electronic device 5 are sent to the dot screen module 3 at the same time, the multi-channel selection module 31 selects one of the signals to send to the image processing module 32 to avoid signal conflict.

[0046] In an application example of the present application, when the first image signal of the AP 2 and the HDMI signal of the electronic device 5 are simultaneously sent to the point screen module 3 , the multi-channel selection module 31 selects the HDMI signal and sends it to the image processing module 32 .

[0047] It can be understood that the image processing module 32 supports converting the first image signal into a second image signal in a format supported by the display screen 4 , and supports converting the HDMI signal into a second image signal in a format supported by the display screen 4 .

[0048] Exemplarily, the point screen module 3 is connected to the AP 2 via a DP interface.

[0049] It can be understood that the first image signal generated by AP 2 is a DP signal.

[0050] It should be noted that the dot screen module 3 of the embodiment of the present application supports the DP1.4 specification and is compatible with the DP1.3 specification.

[0051] Exemplarily, the dot screen module 3 is connected to the display screen 4 via an eDP interface.

[0052] It can be understood that the second image signal generated by the dot screen module 3 is an eDP signal.

[0053] It should be noted that the number of channels of the first output interface of the dot screen module 3 of the embodiment of the present application supports the display requirements of display screens 4 of various sizes.

[0054] For example, Figure 3 As shown, the image processing module 32 includes: a signal conversion module 32-1 and a correction module 32-2. The signal conversion module 32-1 is connected to the multi-channel selection module 31, and is used to convert the output signal of the multi-channel selection module 31 into a third image signal in a format supported by the display screen 4; the correction module 32-2 is connected to the signal conversion module 32-1, and is used to convert the third image signal into a second image signal of a set resolution.

[0055] It can be understood that the signal conversion module 32 - 1 supports converting the first image signal into a third image signal in a format supported by the display screen 4 , and supports converting the HDMI signal into a third image signal in a format supported by the display screen 4 .

[0056] In an application example of the present application, the signal conversion module 32-1 includes a first signal conversion module and a second signal conversion module, the first signal conversion module is used to convert the DP signal into an eDP signal, and the second signal conversion module is used to convert the HDMI signal into an eDP signal.

[0057] In an application example of the present application, the image processing module 32 further includes a detection module for detecting the format of a signal received by the image processing module 32 to determine a signal conversion module for format conversion.

[0058] Here, the resolution is set to the maximum display resolution of the display screen 4.

[0059] It is understandable that if the resolution of the HDMI signal sent by the electronic device 5 is smaller than the maximum display resolution of the display screen 4, the correction module 32-2 adjusts the image resolution of the third image signal after the HDMI signal is converted according to actual needs.

[0060] In an application example of the present application, the correction module 32 - 2 adjusts the image resolution of the third image signal based on an image scaling algorithm.

[0061] For example, Figure 4 As shown, the dot screen module also includes a digital-to-analog conversion module 33, which is connected to the multi-channel selection module 31 and is used to convert the HDMI signal output by the multi-channel selection module 31 into a first audio signal.

[0062] It should be noted that after the digital-to-analog conversion module detects that the signal output by the multi-channel selection module 31 is an HDMI signal, it extracts the HDMI audio Audio signal from the HDMI signal and converts the Audio signal into a first audio signal.

[0063] It should be noted that the Audio signal is a digital signal, and the first audio signal is an analog signal.

[0064] For example, Figure 5 As shown, the display terminal further includes: a speaker 6 and a first switch 7. The speaker 6 is used to play audio based on the received audio signal; the input interface of the first switch 7 is connected to the second output interface of the AP 2 and the second output interface of the point screen module 3, the output interface of the first switch 7 is connected to the speaker 6, and the first switch 7 is used to connect the AP 2 and the speaker 6, or to connect the point screen module 3 and the speaker 6; the AP 2 is also used to generate a second audio signal.

[0065] Exemplarily, the digital-to-analog conversion module 33 is connected to the input interface of the first switch 7 via the second output interface of the screen module 3 .

[0066] Exemplarily, the control interface of the screen-pointing module 3 is connected to the first switch 7 , and the screen-pointing module 3 also includes a control module 34 , which is used to control the switching state of the first switch 7 .

[0067] It should be noted that AP 2 is used to generate a first video signal, and the first video signal includes a second audio signal.

[0068] It can be understood that, when AP 2 generates the first image signal, it also generates the second audio signal.

[0069] It can be understood that when the first switch 7 controls the conduction between AP 2 and speaker 6, speaker 6 plays audio based on the second audio signal; when the first switch 7 controls the conduction between point screen module 3 and speaker 6, speaker 6 plays audio based on the first audio signal.

[0070] Here, the speaker 6 includes a left channel power amplifier PA_L and a right channel power amplifier PA_R, and PA_L and PA_R are respectively connected to a pair of woofers and tweeters.

[0071] Here, the control module 34 can be a digital signal processor (DSP), a programmable logic device (PLD), a complex programmable logic device (CPLD), a field programmable gate array (FPGA), a general processor, a controller, a microcontroller (MCU), a microprocessor (Microprocessor) or an electronic component. In the embodiment of the present application, the control module 34 is preferably a microcontroller MCU.

[0072] Here, the first switch 7 includes a Switch switch, and the Switch switch includes two mutually exclusive switch states.

[0073] In an application example of the present application, the control module 34 is configured as follows: if it is determined that the point screen module 3 receives an HDMI signal, then the control AP 2 and the speaker 6 are disconnected, and the point screen module 3 and the speaker 6 are connected; if it is determined that the point screen module 3 receives a first image signal or does not receive a signal, then the control AP 2 and the speaker 6 are connected, and the point screen module 3 and the speaker 6 are disconnected.

[0074] In an application example of the present application, the point screen module 3 also includes a third input interface, which is a backup HDMI interface. The point screen module 3 supports receiving multiple HDMI signals.

[0075] In an application example of the present application, the point screen module 3 also includes a power management module (PowerManagement) for statically managing or dynamically managing the load power of the point screen module 3.

[0076] In an application example of the present application, the screen-pointing module 3 further includes a double data rate (DDR) synchronous memory and a memory controller (Memory Controller).

[0077] In an application example of the present application, the correction module 32 - 2 is further used to perform equalization correction on the third image signal.

[0078] In an application example of the present application, the screen-pointing module 3 also includes an on-screen menu adjustment module (On-Screen Display, OSD) for adjusting display parameters of the display screen 4 .

[0079] The embodiment of the present application further provides a display terminal system, which includes the display terminal as described above and an electronic device 5, and the electronic device 5 is used to send HDMI signals.

[0080] Here, the electronic device 5 can be a terminal device such as a laptop, a camera, and a computer host, and the embodiment of the present application does not specifically limit the form of the electronic device 5. The electronic device 5 is provided with an HDMI interface for connecting to the display terminal of the embodiment of the present application.

[0081] It should be noted that: "first", "second", etc. are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence.

[0082] In addition, the technical solutions described in the embodiments of the present application can be combined arbitrarily without conflict.

[0083] The above are only specific implementations of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A display terminal based on an application processor, characterized in that: The display terminal comprises: HDMI interface, used to connect electronic devices; An application processor, configured to generate a first image signal; A point screen module, wherein a first input interface of the point screen module is connected to the HDMI interface, and a second input interface of the point screen module is connected to a first output interface of the application processor, and is used to receive an HDMI signal sent by the electronic device and / or a first image signal sent by the application processor, and convert the HDMI signal or the first image signal into a second image signal; A display screen, which is connected to the first output interface of the dot screen module, is used to receive the second image signal sent by the dot screen module, and display image information based on the received second image signal.

2. The display terminal according to claim 1, characterized in that: The point screen module includes: A multi-channel selection module, the multi-channel selection module is respectively connected to the first input interface and the second input interface of the dot screen module, and is used to receive the HDMI signal and / or the first image signal, and select one of the signals for output; An image processing module is provided between the multi-channel selection module and the first output interface of the dot screen module, and is used for converting the output signal of the multi-channel selection module into the second image signal.

3. The display terminal according to claim 2, characterized in that: The image processing module comprises: A signal conversion module, the signal conversion module is connected to the multi-channel selection module and is used to convert the output signal of the multi-channel selection module into a third image signal in a format supported by the display screen; A correction module, the correction module is connected to the signal conversion module, and is used to convert the third image signal into the second image signal of a set resolution.

4. The display terminal according to claim 2, characterized in that: The point screen module also includes: A digital-to-analog conversion module is connected to the multi-channel selection module and is used to convert the HDMI signal output by the multi-channel selection module into a first audio signal.

5. The display terminal according to claim 4, characterized in that: The display terminal also includes: A speaker, for playing audio based on a received audio signal; A first switch, wherein an input interface of the first switch is connected to a second output interface of the application processor and a second output interface of the point-screen module, an output interface of the first switch is connected to the speaker, and the first switch is used to connect the application processor and the speaker, or to connect the point-screen module and the speaker; the application processor is also used to generate a second audio signal.

6. The display terminal according to claim 5, characterized in that: The digital-to-analog conversion module is connected to the input interface of the first switch via the second output interface of the dot screen module.

7. The display terminal according to claim 5, characterized in that: The control interface of the screen-pointing module is connected to the first switch, and the screen-pointing module also includes: a control module, which is used to control the switch state of the first switch.

8. The display terminal according to claim 1, characterized in that: The point screen module is connected to the application processor via the DP interface.

9. The display terminal according to claim 1, characterized in that: The dot screen module is connected to the display screen via an eDP interface.

10. A display terminal system, characterized in that: The system comprises: a display terminal as claimed in any one of claims 1 to 9 and an electronic device, wherein the electronic device is used to send an HDMI signal.

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