Touch all-in-one machine HDMI interface and HDMI interface input and output mode conversion method

Abstract

The application relates to a touch all-in-one machine HDMI interface and a HDMI interface input and output mode switching method. The touch all-in-one machine HDMI interface comprises an HDMI interface, a detection signal module, an HDMI switch module and a master control module. The HDMI interface, the detection signal module and the master control module are sequentially connected. The HDMI switch module comprises a control end, a signal output channel and a signal input channel. The control end is connected with the master control module. The HDMI switch module controls the on-off of the signal output channel and the signal input channel according to a control signal. One end of the signal output channel is connected with the HDMI interface, and the other end is connected with an HDMI signal output module of the touch all-in-one machine. One end of the signal input channel is connected with the HDMI interface, and the other end is connected with the master control module. The master control module has a mode of converting an HDMI signal into a VBY1 signal and outputting. Through the application, the nature of a device connected with the touch all-in-one machine can be automatically recognized, and the HDMI interface can be automatically switched into an input mode or an output mode. The user is convenient in wiring, does not need to identify, and is extremely convenient to use.

Description

Technical Field

[0001] This invention relates to the field of HDMI interface technology, and in particular to an HDMI interface for a touch screen all-in-one computer and a method for converting HDMI interface input / output modes. Background Technology

[0002] HDMI is a commonly used fully digital video and audio transmission interface, generally used for both signal output and signal input. Taking a touchscreen all-in-one PC as an example, it needs both HDMI IN for displaying external signal sources and HDMI OUT for transmitting signals to an external monitor; both use the HDMI interface. However, the HDMI interfaces on touchscreen all-in-one PCs are currently separate for HDMI IN and HDMI OUT. This requires using two HDMI cables simultaneously, or using one HDMI cable to switch ports between the signal source and the monitor, and involves unplugging and plugging the cable into the touchscreen all-in-one PC. Furthermore, when connecting cables to the touchscreen all-in-one PC, it's necessary to distinguish between HDMI IN and HDMI OUT, making it extremely inconvenient to use. Summary of the Invention

[0003] The purpose of this invention is to provide an HDMI interface for a touch screen all-in-one computer and a method for converting HDMI interface input / output modes, which enables the same HDMI interface to have both input and output modes, making it convenient for users.

[0004] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0005] An HDMI interface for a touch screen all-in-one machine includes an HDMI interface, a signal detection module, an HDMI switch module, and a main control module.

[0006] The HDMI interface, the detection signal module, and the main control module are connected in sequence. The detection signal module determines whether the HDMI interface is connected to an external signal source or a display device and outputs a detection signal. The main control module analyzes the detection signal and outputs a control signal.

[0007] The HDMI switch module includes a control terminal, a signal output channel, and a signal input channel. The control terminal is connected to the main control module, and the HDMI switch module controls the on / off state of the signal output channel and the signal input channel according to the control signal. One end of the signal output channel is connected to the HDMI interface, and the other end is connected to the HDMI signal output module of the touch screen all-in-one machine. One end of the signal input channel is connected to the HDMI interface, and the other end is connected to the main control module.

[0008] When the HDMI interface is connected to an external signal source, the HDMI signal output by the external signal source is transmitted to the main control module through the signal input channel. The main control module converts the received HDMI signal into a VBY1 signal and outputs it to the display module of the touch screen all-in-one machine for display. When the HDMI interface is connected to a display device, the HDMI signal output by the HDMI signal output module of the touch screen all-in-one machine is transmitted to the display device for display through the signal output channel.

[0009] Preferably, it further includes an HDMI SPLITTER module for splitting the HDMI signal output from the HDMI signal output module of the touch screen all-in-one machine. The HDMI SPLITTER module includes an HDMI input terminal, a first split terminal, and a second split terminal. The HDMI input terminal is connected to the HDMI signal output module of the touch screen all-in-one machine, the first split terminal is connected to the signal output channel, and the second split terminal is connected to the main control module. The main control module converts the HDMI signal split by the HDMI SPLITTER module into a VBY1 signal and outputs it to the display module of the touch screen all-in-one machine.

[0010] Preferably, it also includes an HDMI OUT module that can both forward VBY1 signals and convert VBY1 signals into HDMI signals. The HDMI OUT module includes a VBY1 input terminal, a VBY1 output terminal, and an HDMI output terminal. The VBY1 input terminal is connected to the main control module and is used to receive the VBY1 signal output by the main control module. The VBY1 output terminal is connected to the display module of the touch screen all-in-one machine and outputs the forwarded VBY1 signal to the display module of the touch screen all-in-one machine for display. The HDMI output terminal is connected to the signal output channel and outputs the HDMI signal converted from the VBY1 signal to the HDMI interface, so that the display device connected to the HDMI interface can display the image displayed by the display module of the touch screen all-in-one machine.

[0011] Preferably, the signal output channel includes a first channel and a second channel, the first shunt terminal is connected to the first channel, and the HDMI output terminal is connected to the second channel.

[0012] Preferably, the HDMI signal output module of the touch screen all-in-one machine is an OPS module.

[0013] This invention also discloses an HDMI interface input / output mode conversion method, which includes the following steps:

[0014] S1: Determine whether the HDMI interface of the touch screen all-in-one machine is connected to an external signal source or a display device. If the HDMI interface is connected to an external signal source, proceed to step S2; if the HDMI interface is connected to a display device, proceed to step S3.

[0015] S2: The control signal input channel is turned on and the signal output channel is turned off. At this time, the HDMI interface is in input mode. The HDMI signal emitted by the external signal source is input to the signal input channel through the HDMI interface. This signal input channel is connected to the module in the touch control all-in-one machine that receives external HDMI signals.

[0016] S3: The control signal output channel is turned on and the signal input channel is turned off. At this time, the HDMI interface is in output mode. The HDMI signal emitted by the touch screen all-in-one machine is transmitted to the display device through the output channel and the HDMI interface in sequence.

[0017] Preferably, in step S3, the HDMI signal emitted by the touch screen all-in-one machine is an OPS signal or the screen display signal of the touch screen all-in-one machine.

[0018] Preferably, a control switch is used to select whether the HDMI signal emitted by the touch screen all-in-one machine is an OPS signal or the screen display signal of the touch screen all-in-one machine.

[0019] After adopting the above scheme, the detection signal module detects whether the HDMI interface is connected to an external signal source or a display device and outputs a detection signal. The main control module analyzes the detection signal and sends a control signal to the HDMI switch module, thereby controlling the on / off state of the signal input and signal output channels to determine whether the HDMI interface is used as a signal input or signal output interface. When the HDMI interface is used as a signal input interface, the HDMI interface, signal input channel, and main control module are sequentially turned on, while the signal output channel is turned off. The main control module converts the received HDMI signal into a VBY1 signal and sends it to the display module of the touch screen all-in-one machine for display. When the HDMI interface is used as a signal output interface, the HDMI output module, signal output channel, and HDMI interface of the touch screen all-in-one machine are sequentially turned on, while the signal input channel is turned off. The HDMI signal output by the HDMI output module of the touch screen all-in-one machine is displayed on an external display device. Through this invention, the nature of the device connected to the touch screen all-in-one machine can be automatically identified, and the HDMI interface can be automatically switched to input or output mode. This makes wiring convenient for users, requires no identification, and is extremely convenient to use. Attached Figure Description

[0020] Figure 1 This is a principle block diagram of Embodiment 1 of the present invention;

[0021] Figure 2 This is a principle block diagram of Embodiment 2 of the present invention. Detailed Implementation

[0022] Example 1:

[0023] like Figure 1As shown, this invention discloses an HDMI interface for a touch-screen all-in-one machine, which includes an HDMI interface, a signal detection module, an HDMI switch module, and a main control module. The HDMI switch module includes a control terminal, a signal output channel, and a signal input channel.

[0024] The HDMI interface, detection signal module, and main control module are connected sequentially. The control terminal of the HDMI switch module is connected to the main control module. One end of the signal output channel is connected to the HDMI interface, and the other end is connected to the HDMI signal output module of the touchscreen all-in-one machine; one end of the signal input channel is connected to the HDMI interface, and the other end is connected to the main control module.

[0025] The detection signal module determines whether the HDMI interface is connected to an external signal source or a display device and outputs a detection signal. The main control module analyzes the detection signal and outputs a control signal. The HDMI switch module controls the on / off state of the signal output and signal input channels based on the control signal.

[0026] When the HDMI interface is connected to an external signal source, the HDMI signal output from the external signal source is transmitted sequentially through the HDMI interface and the signal input channel to the main control module. The main control module converts the received HDMI signal into a VBY1 signal and outputs it to the display module of the touch screen all-in-one machine for display. In this case, the HDMI interface is used as an HDMI IN interface.

[0027] When the HDMI interface is connected to a display device, the HDMI signal output module of the touch screen all-in-one PC outputs the HDMI signal sequentially through the signal output channel and the HDMI interface to the external display device for display. In this case, the HDMI interface is used as an HDMI OUT interface. The HDMI signal output module of the touch screen all-in-one PC uses an OPS module.

[0028] Example 2:

[0029] like Figure 2 As shown, the difference between this embodiment and Embodiment 1 is that it also includes an HDMI SPLITTER module and an HDMIOUT module.

[0030] The HDMI Splitter module is used to split the HDMI signal output from the HDMI signal output module of the touch screen all-in-one machine. Specifically, the HDMI Splitter module includes an HDMI input terminal, a first splitter terminal, and a second splitter terminal. The HDMI input terminal is connected to the HDMI signal output module of the touch screen all-in-one machine to acquire the HDMI signal. The HDMI Splitter module splits the signal into two HDMI signals, which are then output from the first splitter terminal and the second splitter terminal respectively. The first splitter terminal is connected to the signal output channel as the transmitted signal. The second splitter terminal is connected to the main control module, which converts the HDMI signal split by the HDMI Splitter module into a VBY1 signal and outputs it to the display module of the touch screen all-in-one machine for display.

[0031] The HDMI OUT module has both the ability to forward VBY1 signals and the ability to convert VBY1 signals to HDMI signals. Specifically, the HDMI OUT module includes a VBY1 input terminal, a VBY1 output terminal, and an HDMI output terminal. The VBY1 input terminal connects to the main control module and receives the VBY1 signal output by the main control module. Internally, the HDMI OUT module splits the VBY1 signal into two paths: one path is forwarded unchanged to the VBY1 output terminal, and the other path is converted into an HDMI signal and output to the HDMI output terminal. The VBY1 output terminal connects to the display module of the touch screen all-in-one machine, outputting the forwarded VBY1 signal to the display module for display. The HDMI output terminal connects to the signal output channel, outputting the HDMI signal converted from the VBY1 signal to the HDMI interface, enabling external display devices connected to the HDMI interface to display the image displayed on the touch screen all-in-one machine's display module.

[0032] To avoid signal interference, the signal output channels include independent first and second channels. The first shunt terminal is connected to the first channel, and the HDMI output terminal is connected to the second channel. When the first channel is active, the external display device displays the OPS signal; when the second channel is active, the external display device displays the screen of the touch screen all-in-one machine, providing flexible and convenient display.

[0033] Based on the same inventive concept, this invention also discloses an HDMI interface input / output mode conversion method, implemented through the aforementioned touch-screen all-in-one machine HDMI interface, comprising the following steps:

[0034] S1: Determine whether the HDMI interface of the touch screen all-in-one machine is connected to an external signal source or a display device. If the HDMI interface is connected to an external signal source, proceed to step S2; if the HDMI interface is connected to a display device, proceed to step S3.

[0035] S2: The control signal input channel is turned on and the signal output channel is turned off. At this time, the HDMI interface is in input mode. The HDMI signal emitted by the external signal source is input to the signal input channel through the HDMI interface. This signal input channel is connected to the module in the touch control all-in-one machine that receives external HDMI signals, or a relay module, such as the main control module mentioned above.

[0036] S3: With the control signal output channel on and the signal input channel off, the HDMI interface is in output mode. The HDMI signal emitted by the touchscreen all-in-one PC is transmitted to the display device sequentially through the output channel and the HDMI interface. In this step, the HDMI signal emitted by the touchscreen all-in-one PC can be selected as an OPS signal or the screen module's image signal. The type of HDMI signal emitted by the touchscreen all-in-one PC is selected via a control switch. This control switch can be connected to the main control module, which sends control signals to select the first or second channel.

[0037] The key to this invention lies in the detection module's ability to determine whether the HDMI interface is connected to an external signal source or a display device, and output a detection signal. The main control module analyzes the detection signal and sends a control signal to the HDMI switch module, thereby controlling the on / off state of the signal input and output channels to determine whether the HDMI interface is used as a signal input or output interface. When the HDMI interface is used as a signal input interface, the HDMI interface, signal input channel, and main control module are sequentially turned on, while the signal output channel is turned off. The main control module converts the received HDMI signal into a VBY1 signal and sends it to the touchscreen display module for display. When the HDMI interface is used as a signal output interface, the touchscreen's HDMI output module, signal output channel, and HDMI interface are sequentially turned on, while the signal input channel is turned off. The HDMI signal output by the touchscreen's HDMI output module is displayed on an external display device. This invention automatically identifies the nature of the device connected to the touchscreen and automatically switches the HDMI interface to input or output mode, making wiring convenient for users without requiring identification and extremely easy to use.

[0038] The above description is merely an embodiment of the present invention and does not constitute any limitation on the technical scope of the present invention. Therefore, any minor modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present invention shall still fall within the scope of the technical solution of the present invention.

Claims

1. An HDMI interface for a touch-screen all-in-one PC, characterized in that: It includes an HDMI interface, a signal detection module, an HDMI switch module, a main control module, an HDMI SPLITTER module, and an HDMI OUT module; The HDMI interface, the detection signal module, and the main control module are connected in sequence. The detection signal module determines whether the HDMI interface is connected to an external signal source or a display device and outputs a detection signal. The main control module analyzes the detection signal and outputs a control signal. The HDMI switch module includes a control terminal, a signal output channel, and a signal input channel. The control terminal is connected to the main control module, and the HDMI switch module controls the on / off state of the signal output channel and the signal input channel according to the control signal. One end of the signal input channel is connected to the HDMI interface, and the other end is connected to the main control module. The HDMI SPLITTER module is used to split the HDMI signal output by the HDMI signal output module of the touch screen all-in-one machine. It includes an HDMI input terminal, a first split terminal, and a second split terminal. The HDMI input terminal is connected to the HDMI signal output module of the touch screen all-in-one machine, the first split terminal is connected to the signal output channel, and the second split terminal is connected to the main control module. The main control module converts the HDMI signal split by the HDMI SPLITTER module into a VBY1 signal and outputs it to the display module of the touch screen all-in-one machine. The HDMI OUT module has the functions of forwarding VBY1 signals and converting VBY1 signals into HDMI signals. It includes a VBY1 input terminal, a VBY1 output terminal, and an HDMI output terminal. The VBY1 input terminal is connected to the main control module and is used to receive the VBY1 signal output by the main control module. The VBY1 output terminal is connected to the display module of the touch screen all-in-one machine and outputs the forwarded VBY1 signal to the display module of the touch screen all-in-one machine for display. The HDMI output terminal is connected to the signal output channel and outputs the HDMI signal converted from the VBY1 signal to the HDMI interface. The signal output channel includes a first channel and a second channel, with the first shunt terminal connected to the first channel and the HDMI output terminal connected to the second channel. The HDMI signal output module of the touch screen all-in-one machine is an OPS module.

2. A method for converting input / output modes of an HDMI interface, applied to the HDMI interface of a touch-screen all-in-one machine as described in claim 1, characterized in that, Includes the following steps: S1: Determine whether the HDMI interface of the touch screen all-in-one machine is connected to an external signal source or a display device. If the HDMI interface is connected to an external signal source, proceed to step S2; if the HDMI interface is connected to a display device, proceed to step S3. S2: The control signal input channel is turned on and the signal output channel is turned off. At this time, the HDMI interface is in input mode. The HDMI signal emitted by the external signal source is input to the signal input channel through the HDMI interface. This signal input channel is connected to the main control module. S3: The control signal output channel is on and the signal input channel is off. At this time, the HDMI interface is in output mode. Furthermore, a control switch selects whether the HDMI signal emitted by the touch screen all-in-one machine is an OPS signal or the display screen image signal of the touch screen all-in-one machine. When the OPS signal is selected, the HDMI signal output by the OPS module of the touch screen all-in-one machine is split by the HDMI SPLITTER module and then transmitted to the display device sequentially through the first channel and the HDMI interface from the first splitter end. When the display screen image signal is selected, the VBY1 signal output by the main control module is converted into an HDMI signal by the HDMI OUT module and then transmitted to the display device sequentially through the second channel and the HDMI interface.

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