CN221927111U - A device and electronic device for realizing DP input through Type-C interface - Google Patents

Abstract

The utility model relates to the field of display equipment, in particular to a device and electronic equipment for realizing DP input through a Type-C interface. Comprising the following steps: type-C interface, multiplexer and USB PD controller. The Type-C interface is used for receiving an input signal of the external device. The USB PD controller is used for generating an input signal identifier according to an external input signal. The multiplexer is used for outputting the received input signal to the DP signal port of the target display device according to the input signal identification. The USB PD controller is arranged to timely identify whether the signal input by the external device is a USB signal or a DP signal, if the input signal is the DP signal, the multiplexer outputs the received input signal to the DP signal port of the target display device, and then the DP signal is input into the target display device. Therefore, the function of DP signal input can be realized through the Type-C interface.

Description

A device and electronic device for realizing DP input through Type-C interface

Technical Field

The utility model relates to the field of display devices, and in particular to a device and electronic equipment for realizing DP input through a Type-C interface.

Background Art

With the development of technology, starting from 2019, the input and output interfaces of electronic products have gradually changed from USB-A to USB-C. For example, in 2019, Microsoft released the Surface Pro 7, Amazon released the Kindle Fire HD 10, and Sony released the Play Station 5; these three devices belong to PC, tablet and game console respectively. Compared with their respective previous generation products, these three devices have one thing in common that cannot be ignored, that is, they all use the USB-C (also known as USB-C or Type-C) interface. And later, more and more mobile phones also use the Type-C interface, which makes the Type-C interface gradually become the mainstream trend of electronic products.

However, the current USB-C Association specification can support higher data transfer rates and higher-power PD (Power Deliverv) fast charging functions, but for some devices that need to implement video input of DP (Display Port, a digital interface standard for video and audio transmission) signals, the DP signal cannot be directly input through the Type-C interface.

Utility Model Content

In view of this, the present invention provides a device and an electronic device for implementing DP input through a Type-C interface, which at least partially solve the problems existing in the prior art.

According to one aspect of the utility model, a device for implementing DP input through a Type-C interface is provided, comprising:

The Type-C interface is used to receive input signals from external devices; the input signals include input signal identifiers.

The multiplexer is connected to the communication line between the Type-C interface and the target display device.

The USB PD controller is connected to the communication line between the Type-C interface and the multiplexer. The USB PD controller is used to send the input signal identifier to the multiplexer according to the external input signal received by the Type-C interface, and the multiplexer outputs the input signal corresponding to the input signal identifier to the target display.

DP signal port of the device.

Furthermore, the target display device also has a USB signal port. The input signal also includes a display signal corresponding to the input signal identifier.

The multiplexer is used to output the display signal corresponding to the input signal identifier and received from the Type-C interface to the USB signal port of the target display device according to the input signal identifier.

Furthermore, the target display device also has a status signal port.

The status signal port is communicatively connected to the USB PD controller, and the status signal port is used to output the HPD signal.

The USB PD controller is used to transmit the HPD signal to the external device.

Furthermore, the target display device also has a handshake signal port.

The multiplexer is connected to the communication line between the handshake signal port and the SBU1 pin or SBU2 pin of the Type-C interface. The multiplexer is used to control the on/off of the communication line between the handshake signal port and the SBU1 pin or SBU2 pin of the Type-C interface according to the input signal identification and the HPD signal.

Furthermore, the Type-C interface has a TX1 pin and a RX1 pin;

The multiplexer is communicatively connected to the TX1 pin and the RX1 pin respectively; and/or,

The Type-C interface has a TX2 pin and a RX2 pin;

The multiplexer is connected to the TX2 pin and the RX2 pin respectively.

Furthermore, the Type-C interface has a CC1 pin and a CC2 pin.

The USB PD controller is connected to the CC1 pin and the CC2 pin.

Furthermore, the multiplexer is connected to the line communicating between the status signal port and the USB PD controller.

Signals are transmitted between the multiplexer and the status signal port via the HPD protocol.

Signals are transmitted between the multiplexer and the USB PD controller via the IIC protocol.

Furthermore, the multiplexer and the handshake signal port transmit signals via an AUX or P/M protocol.

Furthermore, the USB signal port is a USB2.0 signal port or a USB3.0 signal port.

According to a second aspect of the present invention, an electronic device is also provided, comprising a device for implementing DP input through a Type-C interface as described above.

The technical solution of the utility model has at least the following beneficial effects:

By setting up the USB PD controller, it is possible to timely identify whether the signal input by the external device is a USB signal or a DP signal, and then the multiplexer sends the received signal to the corresponding data port according to the identification result of the USB PD controller. Specifically, if the input signal is a DP signal, the multiplexer outputs the received input signal to the DP signal port of the target display device, and then inputs the DP signal to the target display device. In this way, the function of DP signal input can be realized through the Type-C interface, which can save an external physical DP interface.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

FIG1 is a schematic diagram of the structure of a device for implementing DP input through a Type-C interface in one embodiment of the present application;

FIG2 is a schematic diagram of the structure of a device for implementing DP input through a Type-C interface in another embodiment of the present application;

FIG3 is a schematic diagram of the structure of a device for implementing DP input through a Type-C interface in another embodiment of the present application.

Reference numerals

1. Type-C interface; 2. Multiplexer; 3. USB PD controller; 4. DP signal port; 5. USB signal port; 6. Handshake signal port; 7. Status signal port.

DETAILED DESCRIPTION

The embodiments of the utility model are described in detail below with reference to the accompanying drawings.

It should be noted that the following embodiments and features in the embodiments may be combined with each other without conflict. Moreover, all other embodiments obtained by ordinary technicians in the field without creative work based on the embodiments in the present disclosure are within the scope of protection of the present disclosure.

It should be noted that various aspects of the embodiments within the scope of the appended claims are described below. It should be apparent that the aspects described herein may be embodied in a wide variety of forms, and any specific structure and/or function described herein is merely illustrative. Based on the present disclosure, it should be understood by those skilled in the art that an aspect described herein may be implemented independently of any other aspect, and two or more of these aspects may be combined in various ways. For example, any number of aspects described herein may be used to implement the device and/or practice the method. In addition, other structures and/or functionalities other than one or more of the aspects described herein may be used to implement this device and/or practice this method.

FIG1 is a schematic diagram of the structure of a device for implementing DP input through a Type-C interface in an embodiment of the present application. As shown in FIG1 , the device includes: a Type-C interface 1, a multiplexer 2, and a USB PD controller 3.

The Type-C interface 1 is used to receive an input signal from an external device. The input signal includes an input signal identifier and a display signal corresponding to the input signal identifier. For example, when the input signal is a signal that can be displayed through a USB port, the input signal identifier included is a USB input identifier, and a display signal corresponding to the USB input identifier.

The Type-C interface 1 is used to connect to an external device for data input, and the external device can be an electronic device such as a computer, a mobile phone, or a USB flash drive.

The Type-C interface 1 in this embodiment is a 24-pin full-function Type-C interface 1 in the prior art, and can support USB PD (Power Delivery). USB Type-C is a USB interface appearance standard, which has a smaller volume than Type-A and Type-B, and can be applied to both PCs (host devices) and external devices (slave devices, such as mobile phones).

The multiplexer 2 is connected to the communication line between the Type-C interface 1 and the target display device. In other words, the multiplexer 2 is respectively connected to the Type-C interface 1 and the target display device for communication.

The target display device is a device for displaying input information, such as a display screen. The target display device can support the analysis and display of the DP signal, that is, it must have a corresponding DP signal port 4. DP is a high-definition digital display interface standard. The DP signal port 4 can connect a computer and a monitor, or a computer and a home theater. It is the first display communication port that relies on data packet data transmission technology.

A multiplexer 2 (or mux) can select a signal from multiple analog or digital input signals and forward it, outputting different selected signals to the same output line.

Figure 2 is a structural schematic diagram of a device for implementing DP input through a Type-C interface in another embodiment of the present application. In the embodiment shown in Figure 2, the Type-C has 4 pairs of TX/RX pins, 2 pairs of USBD+/D- pins, a pair of SBU pins, 2 CC pins, and 4 VBUS pins and 4 ground wires.

In this embodiment, the multiplexer 2 is specifically connected to the TX1 pin and the RX1 pin in the Type-C interface 1 for communication; and/or, the multiplexer 2 is specifically connected to the TX2 pin and the RX2 pin for communication, to receive input signals from external devices.

At the same time, the multiplexer 2 is also connected to the target display device, and is used to forward the received signal to the corresponding port of the target display device.

The USB PD controller 3 is connected to the communication line between the Type-C interface 1 and the multiplexer 2. The USB PD controller 3 is used to send the input signal identifier to the multiplexer 2 according to the external input signal received by the Type-C interface 1, and the multiplexer 2 outputs the input signal corresponding to the input signal identifier to the DP signal port 4 of the target display device.

USB PD controller 3, in which USB PD is a communication protocol, which is a new power and communication connection method. It allows USB devices to transmit up to 100W (20VI5A) of power. At the same time, it can change the properties of the port and switch the port between DFP (Downstream Facing Port) and UFP (Upstream Facing Port). If USB PD is implemented in the USB Type-C port, it can support the 100W power (20VI5A) defined in the USB PD specification.

In this embodiment, the USB PD controller 3 is specifically connected to the CC1 pin and the CC2 pin in the Type-C interface 1 .

The CC1 pin is a signal line in the Type-C interface 1, which is mainly used to determine the role of the connected device. In the Type-C interface 1, devices can be divided into two roles: source device and target device. The source device generally refers to a device that provides power and signals, such as a charger, computer, etc.; while the target device refers to a device that receives power and signals, such as a mobile phone, tablet computer, etc. The CC1 pin can determine the role of the device by detecting the voltage level of the connected device. When the CC1 pin detects a low voltage (usually 0V), it indicates that the connected device is a source device; and when the CC1 pin detects a high voltage (usually 5V), it indicates that the connected device is a target device. Through the judgment of the CC1 pin, rapid identification and communication between devices can be achieved.

The CC2 pin is also a signal line in the Type-C interface 1, which is mainly used to transmit communication information between devices. In the Type-C interface 1, some communication protocols need to be interacted between devices to achieve appropriate power supply and data transmission rate. The CC2 pin undertakes the transmission task of this communication protocol. Through the CC2 pin, the device can perform a series of handshake and communication operations, such as determining the power supply capability, determining the display capability of the target display device, and negotiating the data transmission rate. The transmission rate of the CC2 pin can reach tens of Mbps, which can meet the communication needs between most devices. The CC1/CC2 signal line is the only signal line that supports bidirectional signal transmission.

The USB PD controller 3 can generate a corresponding input signal identifier through the HPD signal, and send the input signal identifier to the multiplexer 2. In this embodiment, the HPD signal can be directly used as the input signal identifier.

Specifically, the HPD signal is used to indicate the current state of the target display device. For example, if the target display device can be used as an extended display screen of the PD signal, the HPD signal is in a high level state, and its corresponding input signal identifier can be 1. If the target display device cannot be used as an extended display screen of the PD signal, the HPD signal is in a low level state or an empty set, and its corresponding input signal identifier can be 0.

Correspondingly, if the input signal identifier is 1, it means that the target display device can receive DP signals, and if the input signal identifier is 0, it means that the target display device can receive USB signals.

Meanwhile, the target display device also has a USB signal port 5. The USB signal port 5 may be a USB 2.0 signal port or a USB 3.0 signal port.

The multiplexer 2 is used to output the received input signal to the USB signal port 5 of the target display device according to the input signal identifier.

For example, if the input signal identifier is 1, the multiplexer 2 outputs the received input signal to the DP signal port 4 of the target display device; if the input signal identifier is 0, the multiplexer 2 outputs the received input signal to the USB signal port 5 of the target display device.

As another embodiment of the present invention, as shown in FIG. 3 , the target display device further has a status signal port 7 and a handshake signal port 6 .

The status signal port 7 is communicatively connected with the USB PD controller 3 , and the status signal port 7 is used to output the HPD signal.

The USB PD controller 3 is used to output the HPD signal to an external device.

Specifically, the USB PD controller 3 is connected to the multiplexer 2 through the IIC, obtains the HPD signal in real time and sends it to the external device. When the HPD signal received by the external device is 1, the signal is input to the Type-C interface 1. Otherwise, the signal input is stopped.

Furthermore, when the HPD signal is 1, the DisplayPort connection handshake is turned on. After the DisplayPort connection handshake is passed, the Type-C interface 1 will input the external input signal into the multiplexer 2 through the TX1 pin and the RX1 pin or the TX2 pin and the RX2 pin. Otherwise, the signal input is stopped.

The multiplexer 2 is connected between the handshake signal port 6 and the SBU1 pin and the SBU2 pin of the Type-C interface 1. The information response interaction in the DisplayPort connection handshake is implemented through the SBU1 pin and the SBU2 pin. Specifically, the DisplayPort connection handshake can be implemented according to the existing DisplayPort connection handshake method.

The multiplexer 2 is used to control the on/off of the communication line between the handshake signal port 6 and the SBU1 pin and the SBU2 pin of the Type-C interface 1 according to the input signal identification and the HPD signal.

SBU1/SBU2 (SBU pin): SBU pin is the auxiliary communication pin of Type-C interface 1.

Furthermore, the multiplexer 2 and the handshake signal port 6 transmit signals via the AUX protocol.

According to a second aspect of the present invention, an electronic device is also provided, comprising a device for implementing DP input through a Type-C interface as described above.

Specifically, the electronic device may be a terminal product or an Internet of Things device, and the terminal product may be understood as an intelligent terminal product or an intelligent Internet of Things device. In a specific embodiment, the electronic device is a conference machine.

The above are only specific implementations of the utility model, but the protection scope of the utility model is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the utility model should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims (10)

1. A device for implementing DP input through a Type-C interface, comprising: Type-C interface, used to receive an input signal from an external device, wherein the input signal includes an input signal identifier; A multiplexer connected to a communication line between the Type-C interface and a target display device; A USB PD controller is connected to the communication line between the Type-C interface and the multiplexer; the USB PD controller is used to send an input signal identifier to the multiplexer according to an external input signal received by the Type-C interface, and the multiplexer outputs the input signal corresponding to the input signal identifier to the DP signal port of the target display device. 2. The device for implementing DP input through a Type-C interface according to claim 1, characterized in that the target display device also has a USB signal port; the input signal also includes a display signal corresponding to the input signal identifier; The multiplexer is used to output a display signal corresponding to the input signal identifier and received from the Type-C interface to a USB signal port of a target display device according to the input signal identifier. 3. The device for implementing DP input through a Type-C interface according to claim 1, wherein the target display device further has a status signal port; The status signal port is communicatively connected to the USB PD controller, and the status signal port is used to output the HPD signal; The USB PD controller is used to output the HPD signal to the external device. 4. The device for implementing DP input through a Type-C interface according to claim 3, characterized in that the target display device also has a handshake signal port; The multiplexer is connected to the communication line between the handshake signal port and the SBU1 pin or SBU2 pin of the Type-C interface, and the multiplexer is used to control the on and off of the communication line between the handshake signal port and the SBU1 pin or SBU2 pin of the Type-C interface according to the input signal identifier and the HPD signal. 5. The device for implementing DP input through a Type-C interface according to claim 1, wherein the Type-C interface has a TX1 pin and a RX1 pin; The multiplexer is communicatively connected to the TX1 pin and the RX1 pin respectively; and/or, The Type-C interface has a TX2 pin and a RX2 pin; The multiplexer is communicatively connected to the TX2 pin and the RX2 pin respectively. 6. A device for implementing DP input through a Type-C interface according to claim 1, characterized in that the Type-C interface has a CC1 pin and a CC2 pin; The USB PD controller is connected to the CC1 pin and the CC2 pin. 7. The device for implementing DP input through a Type-C interface according to claim 3, characterized in that the multiplexer is connected to a line of communication connection between the status signal port and the USB PD controller; The multiplexer and the status signal port transmit signals via the HPD protocol; The multiplexer and the USB PD controller transmit signals via the IIC protocol. 8. The device for implementing DP input through a Type-C interface according to claim 4, characterized in that signals are transmitted between the multiplexer and the handshake signal port through an AUX or P/M protocol. 9. The device for implementing DP input through a Type-C interface according to claim 2, wherein the USB signal port is a USB2.0 signal port or a USB3.0 signal port. 10. An electronic device, comprising a device for implementing DP input through a Type-C interface as claimed in any one of claims 1 to 9.