Self-adaptive interface circuit and controller thereof

Abstract

The utility model discloses a self-adaptive interface circuit and a controller thereof, comprising an interface unit used for connecting a screen line, the interface unit comprising a transmission terminal used for transmitting a digital signal and an identification terminal used for identifying the screen line; the switching unit comprises a power tube and a signal output end, the input end of the power tube is connected with the identification terminal, and the output end of the power tube is connected with the signal output end; and the processing unit is respectively connected with the transmission terminal and the signal output end, and the processing unit is used for adaptively processing the digital signal according to the output signal of the signal output end and then transmitting the digital signal to the transmission terminal. By arranging the interface unit and the switching unit, the identification terminal can accurately identify the type of the screen line, and the occupied space of the interface unit is saved; by arranging the switching unit and the processing unit, the processing unit can output the corresponding digital signal according to the output signal of the signal output end, so that the compatibility and universality of the adaptive interface circuit are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to digital image technical field especially, and it is a kind of self-adapting interface circuit and its controller. BACKGROUND

[0002] Embedded display port (Embedded Display Port, EDP) and low voltage differential signaling (Low Voltage Differential Signaling, LVDS) standard interface are the main image video signal input interface of current display screen product.In all actual application equipment / processor mainboard involving display screen application, it needs to have the image video signal on-board interface corresponding to display screen, to complete corresponding connection and realize the transmission and display of image video signal.In order to be compatible with two kinds of standard interfaces, the display processing unit (Graphics Processing Unit, GPU) of main processor often needs to set up two independent interfaces, to meet two kinds of standard signal input and processing.This structure can occupy mainboard space larger, makes the mainboard design difficult miniaturization, limits its system equipment / mainboard product application, cannot according to the interface type of display screen adaptively output corresponding digital signal, reduces its product universality. UTILITARY MODEL CONTENT

[0003] To solve the above problems, the purpose of the utility model is to provide a kind of self-adapting interface circuit and its controller, guarantee that self-adapting interface circuit can automatically identify the type of screen line, to make processing unit output corresponding digital signal, improve the compatibility and universality of self-adapting interface circuit and its controller, improve the use experience of user.

[0004] The technical scheme adopted by the utility model to solve its problem is:

[0005] The first aspect of the application, a kind of self-adapting interface circuit, comprising: interface unit, for connecting screen line, the interface unit includes the transmission terminal for transmitting digital signal, for identifying the identification terminal of the screen line;Switching unit, the switching unit includes power tube and signal output end, the input end of the power tube is connected with the identification terminal, and the output end of the power tube is connected with the signal output end;Processing unit, the processing unit is connected with the transmission terminal and the signal output end respectively, and the processing unit is transmitted to the transmission terminal after the digital signal is adaptively handled according to the output signal of the signal output end.

[0006] The adaptive interface circuit has at least the following beneficial effects: by setting the interface unit and the switching unit, the identification terminal can accurately identify the type of screen line to transmit the corresponding identification signal to the input end of the power tube, save the occupied space of the interface unit, and facilitate the miniaturization of the adaptive interface circuit; by setting the switching unit and the processing unit, the processing unit can output the corresponding digital signal according to the output signal of the signal output end, improve the compatibility and versatility of the adaptive interface circuit, and improve the user experience.

[0007] Further, the digital signal includes a first signal and a second signal; when the identification terminal is in a short-circuit state, the processing unit converts the digital signal into the second signal and transmits it to the transmission terminal; when the identification terminal is in an open state, the processing unit directly transmits the first signal to the transmission terminal. By judging whether the identification terminal is in a short-circuit state, the processing unit adaptively formats and outputs the digital signal, improving the compatibility and versatility of the adaptive interface circuit.

[0008] Further, the processing unit includes a first output port, a second output port, and a receiving port for receiving the first signal; the first signal is transmitted to the transmission terminal through the first output port, and the second signal is transmitted to the transmission terminal through the first output port and the second output port. By setting the first output port, the second output port and the receiving port, it is ensured that the processing unit can quickly and accurately acquire the first signal through the receiving port, and stably output the first signal through the first output port, output the second signal through the first output port and the second output port, and improve the working efficiency of the processing unit by multiplexing the first output port, thereby saving the production cost of the adaptive interface circuit.

[0009] Further, the screen line includes a first screen line cooperating with the first signal and a second screen line cooperating with the second signal, and the terminal corresponding to the identification terminal in the second screen line is electrically connected with the terminal corresponding to the first output port. By setting the first screen line and the second screen line, the identification terminal can quickly and accurately identify whether the corresponding terminal in the screen line is electrically connected with the terminal corresponding to the first output port, and then send a signal to the input end of the power tube, ensuring the accuracy of the judgment of the switching unit, and also simplifying the structure of the adaptive interface circuit.

[0010] Further, the first signal is an EDP signal; and the second signal is an LVDS signal. EDP interface and LVDS interface are the main image and video signal input interfaces of the current display screen product, which ensures the versatility and compatibility of the adaptive interface circuit.

[0011] Further, the sum of the number of the transmission terminals and the number of the identification terminals is 40. The sum of the number of the transmission terminals and the number of the identification terminals is 40, which ensures that the interface unit can adapt to different screen lines, avoids the situation that the number of the transmission terminals is insufficient, and the processing unit cannot stably output digital signals of corresponding formats, and improves the compatibility and universality of the adaptive interface circuit.

[0012] Further, the power tube is a triode. The triode is a kind of semiconductor device for controlling current, which functions to amplify weak signals into electrical signals with large amplitude values, and is also used as a non-contact switch. The power tube being a triode can effectively amplify the signals of the identification terminals and transmit them to the processing unit, and improves the identification accuracy and working stability of the adaptive interface circuit.

[0013] Further, the model of the processing unit is CH7513. The CH7513 chip is applied to a traditional computer, can convert EDP input signals into LVDS output, and supports the ability to bypass output the input EDP signals, so that the processing unit can stably output digital signals of different formats, and ensures the compatibility and universality of the adaptive interface circuit.

[0014] Further, the 36th pin of the processing unit is connected to the signal output end. This structure ensures that the processing unit can connect the output end of the power tube through the 36th pin, so as to accurately obtain the identification signals of the identification terminals amplified by the power tube, and improves the identification accuracy and working stability of the adaptive interface circuit.

[0015] In the second aspect of the present application, a controller comprises the adaptive interface circuit as described above.

[0016] The beneficial effects of the controller are that: by setting the interface unit and the switching unit, the identification terminal can accurately identify the type of the screen line to transmit the corresponding identification signal to the input end of the power tube, save the occupied space of the interface unit, and facilitate the miniaturization of the adaptive interface circuit; by setting the switching unit and the processing unit, the processing unit can output the corresponding digital signal according to the output signal of the signal output end, improve the compatibility and universality of the adaptive interface circuit, and improve the user experience; by judging whether the identification terminal is in a short-circuit state, the processing unit adaptively converts and outputs the digital signal, improves the compatibility and universality of the adaptive interface circuit; by setting the first output port, the second output port and the receiving port, it is ensured that the processing unit can quickly and accurately acquire the first signal through the receiving port, and stably output the first signal through the first output port, output the second signal through the first output port and the second output port, improve the working efficiency of the processing unit, and save the production cost of the adaptive interface circuit; by setting the first screen line and the second screen line, the identification terminal can quickly and accurately identify whether the corresponding terminal in the screen line is electrically connected with the terminal corresponding to the first output port, and then send a signal to the input end of the power tube, ensure the judgment accuracy of the switching unit, and simplify the structure of the adaptive interface circuit.

[0017] Additional aspects and advantages of the present application will be described in the following description, become apparent from the following description, or be learned by practice of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 A structure principle diagram of an adaptive interface circuit according to an embodiment of the present application;

[0019] Figure 2 A circuit diagram of a processing unit in the adaptive interface circuit; Figure 1

[0020] A circuit diagram of a switching unit in the adaptive interface circuit; Figure 3 Figure 1 A circuit diagram of an interface unit in the adaptive interface circuit.

[0021] DETAILED DESCRIPTION Figure 4 Figure 1 The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the drawings, wherein the same or similar reference signs represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present application, and cannot be understood as a limitation of the present application.

[0022] Reference is made to

[0023] Reference is made to Figures 1 to 4 ​​The utility model embodiment provides a kind of adaptive interface circuit, comprising: interface unit 100, for connecting screen line, interface unit 100 includes the transmission terminal 120 for transmitting digital signal, for identifying the identification terminal 110 of screen line;Switching unit 200, switching unit 200 includes power tube Q and signal output end L1, the input end L2 of power tube Q is connected with identification terminal 110, and the output end of power tube Q is connected with signal output end L1;Processing unit 300, processing unit 300 is connected transmission terminal 120 and signal output end L1 respectively, and processing unit 300 is transmitted to transmission terminal 120 after carrying out adaptive processing to digital signal according to the output signal of signal output end L1.

[0024] By setting interface unit 100 and switching unit 200, identification terminal 110 can accurately identify the type of screen line to transmit the corresponding identification signal to the input end L2 of power tube Q, saving the occupied space of interface unit 100, facilitating the miniaturization of adaptive interface circuit;By setting switching unit 200 and processing unit 300, processing unit 300 can output corresponding digital signals according to the output signal of signal output end L1, improve the compatibility and versatility of adaptive interface circuit, and improve the user experience.

[0025] Another embodiment, the digital signal includes first signal and second signal;When identification terminal 110 is in short-circuit state, processing unit 300 converts digital signal into second signal and transmits to transmission terminal 120;When identification terminal 110 is in disconnected state, processing unit 300 directly transmits first signal to transmission terminal 120. By judging whether identification terminal 110 is in short-circuit state, processing unit 300 adaptively converts and outputs digital signal, improves the compatibility and versatility of adaptive interface circuit.

[0026] Another embodiment, processing unit 300 includes first output port 310, second output port 320 and receiving port 330 for receiving first signal;First signal is transmitted to transmission terminal 120 through first output port 310, and second signal is transmitted to transmission terminal 120 through first output port 310 and second output port 320. By setting first output port 310, second output port 320 and receiving port 330, it is ensured that processing unit 300 can quickly and accurately acquire first signal through receiving port 330, and stably output first signal through first output port 310, output second signal through first output port 310 and second output port 320, improve the working efficiency of processing unit 300 by multiplexing first output port 310, save the production cost of adaptive interface circuit.

[0027] In another embodiment, the screen line includes a first screen line matched with the first signal and a second screen line matched with the second signal, and a terminal corresponding to the identification terminal 110 and a terminal corresponding to the first output port 310 are electrically connected in the second screen line. By arranging the first screen line and the second screen line, the identification terminal 110 can quickly and accurately identify whether the terminal corresponding in the screen line is electrically connected to the terminal corresponding to the first output port 310, and then send a signal to the input end L2 of the power tube Q, thereby ensuring the accuracy of the judgment of the switching unit 200 and simplifying the structure of the adaptive interface circuit. In actual application, the terminal corresponding to the identification terminal 110 is the 9th pin, and the terminal corresponding to the first output port 310 is the 7th pin, so as to facilitate the short-circuit processing of the screen line.

[0028] In another embodiment, the first signal is an EDP signal, and the second signal is an LVDS signal. The EDP interface and the LVDS interface are the main image video signal input interfaces of the display screen product at present, thereby ensuring the universality and compatibility of the adaptive interface circuit.

[0029] In another embodiment, the sum of the number of the transmission terminal 120 and the identification terminal 110 is 40. The sum of the number of the transmission terminal 120 and the identification terminal 110 is 40, thereby ensuring that the interface unit 100 can adapt to different screen lines, avoiding that the number of the transmission terminal 120 is insufficient to cause the processing unit 300 to be unable to stably output the digital signal of the corresponding format, and improving the compatibility and universality of the adaptive interface circuit.

[0030] In another embodiment, the power tube Q is a triode. The triode is a kind of semiconductor device for controlling current, which functions to amplify a weak signal into an electrical signal with a larger amplitude value, and is also used as a non-contact switch. The power tube Q being a triode can effectively amplify the signal of the identification terminal 110 and transmit it to the processing unit 300, thereby improving the identification accuracy and working stability of the adaptive interface circuit.

[0031] In another embodiment, the model of the processing unit 300 is CH7513. In order to be compatible with different digital signals, the processing unit 300 of the embodiment of the application selects a chip that can convert an EDP signal into an LVDS signal, and needs to have an EDP bypass function. The CH7513 chip is applied to a traditional computer, can convert an EDP input signal into an LVDS output, and has the ability to bypass the input EDP signal for output, so that the processing unit 300 can stably output digital signals of different formats, thereby ensuring the compatibility and universality of the adaptive interface circuit.

[0032] In another embodiment, the 36th pin of the processing unit 300 is connected to the signal output end L1. This structure ensures that the processing unit 300 can be connected to the output end of the power transistor Q through the 36th pin, so as to accurately obtain the identification signal amplified by the power transistor Q through the identification terminal 110, and improve the identification accuracy and working stability of the adaptive interface circuit.

[0033] The embodiment of the utility model further provides a kind of controller, including the adaptive interface circuit as described above.

[0034] The working principle of the utility model is further described below.

[0035] In the use process of the controller in the embodiment, the user selects different screen lines according to the screen specification and application requirements. Specifically, the terminal corresponding to the identification terminal 110 and the terminal corresponding to the first output port 310 in the first screen line corresponding to the EDP signal are disconnected, and the terminal corresponding to the identification terminal 110 and the terminal corresponding to the first output port 310 in the second screen line corresponding to the LVDS signal are short-circuited. Then, connect the screen line to the interface unit 100 and turn on the power supply of the display screen and the processor. Then, the identification terminal 110 can quickly identify whether the terminal corresponding to the identification terminal 110 and the terminal corresponding to the first output port 310 in the screen line are short-circuited. For example, when the screen line is the first screen line, i.e., the 9th pin and the 7th pin of the interface unit 100 are not in a short-circuit state, the identification terminal 110 does not send a signal to the input end L2 of the power transistor Q. At this time, the signal output end L1 outputs a low-level signal. When the screen line is the second screen line, i.e., the 9th pin and the 7th pin of the interface unit 100 are in a short-circuit state, the identification terminal 110 sends a signal to the input end L2 of the power transistor Q. At this time, the power transistor Q amplifies the signal and outputs a high-level signal through the signal output end L1. Then, the processing unit 300 processes the first signal obtained from the receiving port according to the signal of the signal output end L1. Specifically, when the 36th pin signal of the processing unit 300 is high, the processing unit 300 only performs direct transmission of the first signal. At this time, the first signal is directly output to the interface unit 100 and the first screen line through the first output port 310, and finally transmitted to the display. When the 36th pin signal of the processing unit 300 is low, the processing unit 300 converts the first signal into a second signal and outputs it to the interface unit 100 and the second screen line through the first output port 310 and the second output port 320, and finally transmits it to the display. Through multiplexing the first output port 310, the output of the digital signal is further saved, thereby realizing the miniaturization of the controller.

[0036] From the above description, the adaptive interface circuit and the controller thereof of the utility model can accurately identify the type of screen line through the setting of interface unit and switching unit, to transmit corresponding identification signal to the input end L2 of power tube Q, save the occupied space of interface unit, facilitate the miniaturization of adaptive interface circuit, through the setting of switching unit and processing unit, processing unit can output corresponding digital signal according to the output signal of signal output end L1, improve the compatibility and versatility of adaptive interface circuit, improve the use experience of user, through judging whether the identification terminal is in short-circuit state, processing unit will adaptively format conversion and output digital signal, improve the compatibility and versatility of adaptive interface circuit, through the setting of first output port 310, second output port 320 and receiving port 330, ensure that processing unit can quickly and accurately acquire first signal through receiving port 330, and stably output first signal through first output port 310, output second signal through first output port 310 and second output port 320, improve the working efficiency of processing unit through multiplexing first output port 310, save the production cost of adaptive interface circuit, through the setting of first screen line and second screen line, identification terminal can quickly and accurately identify whether the corresponding terminal in screen line is electrically connected with the corresponding terminal of first output port 310, and then send signal to the input end L2 of power tube Q, ensure the judgment accuracy of switching unit, also simplify the structure of adaptive interface circuit.

[0037] The utility model is not limited to the above embodiment, and various changes can be made within the knowledge of those skilled in the art without departing from the spirit of the utility model.

Claims

1. An adaptive interface circuit, characterized by The application relates to an adaptive interface circuit. The adaptive interface circuit comprises an interface unit, a switching unit and a processing unit. The interface unit is used for connecting a screen line and comprises transmission terminals for transmitting digital signals and identification terminals for identifying the screen line. The switching unit comprises a power tube and a signal output terminal.

2. An adaptive interface circuit according to claim 1, wherein, The input end of the power tube is connected with the identification terminals, and the output end of the power tube is connected with the signal output terminal.

3. An adaptive interface circuit according to claim 2, wherein, The processing unit is connected with the transmission terminals and the signal output terminal respectively.

4. An adaptive interface circuit according to claim 3, wherein, The processing unit performs adaptive processing on the digital signals according to the output signals of the signal output terminal and then transmits the digital signals to the transmission terminals.

5. An adaptive interface circuit according to claim 2, wherein, The digital signals comprise first signals and second signals.

6. An adaptive interface circuit according to claim 1, wherein, When the identification terminals are in a short-circuit state, the processing unit converts the digital signals into the second signals and transmits the second signals to the transmission terminals.

7. An adaptive interface circuit according to claim 1, wherein, When the identification terminals are in an open state, the processing unit directly transmits the first signals to the transmission terminals.

8. An adaptive interface circuit according to claim 7, wherein, The processing unit comprises a first output port, a second output port and a receiving port for receiving the first signals.

9. An adaptive interface circuit according to claim 8, wherein, The first signals are transmitted to the transmission terminals through the first output port, and the second signals are transmitted to the transmission terminals through the first output port and the second output port.

10. A controller characterized by comprising: The screen line comprises a first screen line matched with the first signals and a second screen line matched with the second signals. The terminal corresponding to the identification terminals and the terminal corresponding to the first output port in the second screen line are electrically connected. The first signals are EDP signals, and the second signals are LVDS signals. The number of the transmission terminals and the identification terminals is 40. The power tube is a triode. The model of the processing unit is CH7513. The 36th pin of the processing unit is connected with the signal output terminal. The adaptive interface circuit comprises any one of the adaptive interface circuits in claims 1-9.

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