A dp1.4 and dp2.1 compatible device and electronic device thereof

Abstract

The utility model provides a kind of compatible device of DP1.4 and DP2.1 and electronic equipment thereof, and digital display interface technical field, and the device is integrated DP 1.4 and DP 2.1 function on same module, and the input signal of HPD is switched by switch, user can select to use DP 1.4 or DP 2.1 function according to need without replacing module.The device not only improves the versatility and flexibility of equipment, but also reduces hardware cost, while maintaining high performance and reliability.The purpose is to solve the problem that single function module cannot support two standards simultaneously in the prior art.

Description

Technical Field

[0001] This utility model relates to the field of digital display interface technology, specifically to a DP1.4 and DP2.1 compatible device and its electronic equipment. Background Technology

[0002] Currently, in the field of modern display technology, the development of digital display interfaces is crucial for improving the performance of display devices and the user experience. DisplayPort (DP), as a mainstream digital display interface standard, is widely used in various devices such as computer monitors, televisions, and projectors. With the continuous advancement of display technology, the requirements for the bandwidth, resolution support capabilities, and transmission efficiency of display interfaces are also constantly increasing.

[0003] In recent years, the DisplayPort (DP) interface standard has undergone several iterations and upgrades. The earlier DP 1.4 version already supported higher bandwidth and various advanced display technologies, such as High Dynamic Range (HDR) display, Multi-Stream Transport (MST), and efficient video compression technologies (like DSC 1.2). These features made DP 1.4 perform exceptionally well in high-definition and multi-screen display applications, meeting the basic market demands for display devices at the time.

[0004] However, with the further development of display technology, especially the increasing demand for higher resolutions (such as 8K, 16K) and higher refresh rates (such as 120Hz, 144Hz), the performance of DP 1.4 gradually showed its limitations. To meet these new demands, DP 2.1 was developed. DP 2.1 significantly improves data transmission efficiency and display performance by substantially increasing bandwidth (up to 80Gbps) and optimizing the encoding protocol. Furthermore, DP 2.1 also improves cable standards, making it more reliable in long-distance transmission and high-bandwidth applications.

[0005] Despite the numerous technological advantages offered by DP 2.1, a large number of devices and applications still rely on the DP 1.4 standard. Therefore, for display device manufacturers, supporting both DP 1.4 and DP 2.1 standards simultaneously in next-generation devices presents a significant technical challenge. Traditional solutions typically require designing separate hardware modules for each standard, which not only increases device complexity and cost but also limits flexibility and versatility.

[0006] Furthermore, a single-function DP module design cannot meet users' needs for different DP versions in different scenarios. For example, users may need to connect an older monitor that supports DP 1.4 and a newer monitor that supports DP 2.1 to the same device, or share display content between different devices. This need has prompted the market to require a solution that can flexibly switch between and be compatible with both DP standards to improve device versatility and user experience.

[0007] In summary, existing display devices have the following problems in their DP interface design: First, they cannot be compatible with both DP1.4 and DP2.1 standards simultaneously, which limits the versatility of the devices; second, the traditional single-function module design increases the complexity and cost of the devices; and third, they cannot flexibly switch between the two DP versions to meet the needs of different users.

[0008] In view of the above, this application is hereby submitted. Utility Model Content

[0009] This utility model discloses a DP1.4 and DP2.1 compatible device and its electronic equipment, which can at least partially improve the above-mentioned problems.

[0010] To achieve the above objectives, the present invention adopts the following technical solution:

[0011] A DP1.4 and DP2.1 compatible device includes: a switching module, a DP1.4 circuit module, a DP2.1 circuit module, and a DP connector. The input terminal of the switching module is electrically connected to the output terminal of an external controller. A first terminal of the switching module is electrically connected to the input terminal of the DP1.4 circuit module, and a second terminal of the switching module is electrically connected to the input terminal of the DP2.1 circuit module. The output terminals of both the DP1.4 and DP2.1 circuit modules are electrically connected to the input terminal of the DP connector, which is used for connection to an external display.

[0012] The switching module is configured to establish a circuit connection with either the DP1.4 circuit module or the DP2.1 circuit module based on the input signal from the external controller, thereby enabling switching between the DP1.4 circuit module and the DP2.1 circuit module.

[0013] The present invention also provides an electronic device comprising a controller, a display, and a DP1.4 and DP2.1 compatible device as described in any of the above, wherein the input terminal of the switching module is electrically connected to the output terminal of the controller, and the DP connector is used for connection to the display.

[0014] In summary, the DP1.4 and DP2.1 compatible device is compatible with two different versions of the DisplayPort (DP) interface standard—DP 1.4 and DP 2.1. It integrates and converts DP 1.4 and DP 2.1 functions through simple resistor and capacitor configuration switching. The core of this solution lies in utilizing a universal DP interface and processing the input signal through specific circuit components (such as resistors, capacitors, and dedicated chips), thereby achieving seamless switching between the two DP versions. Specifically, the DP 1.4 signal is directly connected to the DP interface through a specific circuit path, while the DP 2.1 signal is processed by a dedicated signal conversion chip before being output to the DP interface. By switching the HPD input signal, users can choose to use either DP 1.4 or DP 2.1 functions as needed without replacing hardware modules.

[0015] This design not only improves the flexibility and versatility of the device but also reduces hardware costs while maintaining high performance and reliability. Compared to traditional single-function modules, this device can flexibly switch between two DP versions without replacing the module, meeting the diverse needs of users in different scenarios. Furthermore, the device possesses excellent scalability and compatibility, suitable for various display devices and application scenarios, providing users with a more efficient and convenient display solution. It successfully solves the problem in existing technologies where single-function modules cannot simultaneously support two DP standards, providing new ideas and methods for the design and application of display devices. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the compatible device for DP1.4 and DP2.1 provided in this embodiment of the present invention;

[0017] Figure 2 This is a schematic diagram of the DP connector circuit provided in an embodiment of the present invention;

[0018] Figure 3 This is a partial circuit diagram of the signal conversion module provided in an embodiment of this utility model. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model. Therefore, the following detailed description of the embodiments of this utility model provided in the accompanying drawings is not intended to limit the scope of the claimed utility model, but merely represents selected embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0020] The specific embodiments of this utility model are described in detail below with reference to the accompanying drawings.

[0021] Please see Figures 1 to 3 The first embodiment of this utility model discloses a DP1.4 and DP2.1 compatible device, which includes: a switching module, a DP1.4 circuit module, a DP2.1 circuit module, and a DP connector. The input terminal of the switching module is electrically connected to the output terminal of an external controller. The first terminal of the switching module is electrically connected to the input terminal of the DP1.4 circuit module, and the second terminal of the switching module is electrically connected to the input terminal of the DP2.1 circuit module. The output terminals of both the DP1.4 and DP2.1 circuit modules are electrically connected to the input terminal of the DP connector, which is used to connect to an external display.

[0022] The switching module is configured to establish a circuit connection with either the DP1.4 circuit module or the DP2.1 circuit module based on the input signal from the external controller, thereby enabling switching between the DP1.4 circuit module and the DP2.1 circuit module.

[0023] Specifically, in this embodiment, during operation, the external controller sends specific control signals to the switching module according to user needs or system settings. Upon receiving the control signal, the switching module establishes the circuit connection with either the DP1.4 or DP2.1 circuit module according to the signal's instructions. For example, when the user needs to use the DP 1.4 function, the external controller sends a DP 1.4 switching signal to the switching module. Upon receiving this signal, the switching module establishes the circuit connection with the DP 1.4 circuit module while simultaneously disconnecting from the DP 2.1 circuit module. At this time, the DP 1.4 circuit module begins operation, transmitting the DP 1.4 signal to the DP connector at its output, which then sends the signal to the external display, enabling the normal display of the DP 1.4 function.

[0024] Conversely, when the user needs to switch to DP 2.1 function, the external controller sends a DP 2.1 switching signal to the switching module. Based on this signal, the switching module establishes the circuit connection with the DP 2.1 circuit module while simultaneously disconnecting the connection with the DP 1.4 circuit module. The DP 2.1 circuit module then begins operation, transmitting the DP 2.1 signal to the DP connector at its output. Finally, the signal is sent to the external display via the DP connector, enabling normal display of the DP 2.1 function. In this way, the device can flexibly switch between DP 1.4 and DP 2.1 functions without replacing the hardware modules, greatly improving the device's versatility and flexibility.

[0025] This compatible device solves the problem in existing technologies where a single functional module cannot simultaneously support two DP standards. It allows users to flexibly choose between DP 1.4 and DP 2.1 functions on the same device as needed, without the need to purchase or replace additional hardware modules, thus reducing operating costs. Secondly, the device achieves function switching through circuit switching; the switching process is fast and stable, without significantly affecting signal transmission quality, ensuring the stability and reliability of the display effect. Furthermore, the device possesses excellent expandability and compatibility, adapting to different models of monitors and display devices, further enhancing its versatility. Finally, this design provides device manufacturers with greater design flexibility, helping to simplify the hardware structure, reduce production costs, and meet market demands for high-performance, multi-functional display devices.

[0026] Preferably, the switching module is a single-pole double-throw switch.

[0027] Specifically, in this embodiment, the switching module, as the core component, is implemented using a single-pole double-throw (SPDT) switch. Its input terminal is electrically connected to the output terminal of the external controller to receive control signals from the external controller. The switch is used to switch the HPD signal; the default is pins 1-3 (DP1.4), and after switching, it becomes pins 2-3 (DP2.1). This SPDT design makes circuit connection switching extremely simple and efficient, enabling instantaneous switching between DP1.4 and DP2.1, greatly improving device response speed and user experience. Specifically, the first terminal of the SPDT switch is electrically connected to the input terminal of the DP1.4 circuit module, and the second terminal is electrically connected to the input terminal of the DP2.1 circuit module. The output terminals of both the DP1.4 and DP2.1 circuit modules are electrically connected to the input terminals of the DP connector, which is used to connect to an external display. This connection method ensures seamless signal switching between the two DP versions and stable transmission to the external display via the DP connector.

[0028] During operation, the external controller sends specific control signals to the single-pole double-throw switch (SPDS) based on user needs or system settings. When the user needs to use the DP 1.4 function, the external controller sends a DP 1.4 switching signal to the SPDS. Upon receiving this signal, the switch quickly establishes the circuit connection with the DP 1.4 circuit module while simultaneously disconnecting the connection with the DP 2.1 circuit module. At this point, the DP 1.4 circuit module begins operation, transmitting the DP 1.4 signal to the DP connector at its output, which then sends the signal to the external display, enabling the normal display of the DP 1.4 function. Conversely, when the user needs to switch to the DP 2.1 function, the external controller sends a DP 2.1 switching signal to the SPDS. Based on this signal, the switch establishes the circuit connection with the DP 2.1 circuit module while simultaneously disconnecting the connection with the DP 1.4 circuit module. The DP 2.1 circuit module then begins operation, transmitting the DP 2.1 signal to the DP connector at its output, which then sends the signal to the external display, enabling the normal display of the DP 2.1 function.

[0029] In short, single-pole double-throw (SPDT) switches are simple in structure, low in cost, and easy to implement and integrate, making the hardware design of the entire compatible device more concise and reducing production costs. Secondly, SPDT switches offer fast switching speeds, capable of switching between DP 1.4 and DP 2.1 instantly without causing significant delays or interference to signal transmission, thus ensuring the stability and smoothness of the display. Furthermore, this design improves system reliability and stability, reducing the risk of failures caused by complex circuit switching.

[0030] Preferably, the DP1.4 circuit module includes a first resistor and a first capacitor, wherein the first resistor and the first capacitor are connected in series with the first terminal of the switching module and the input terminal of the DP connector.

[0031] Specifically, in this embodiment, the module includes a first resistor and a first capacitor connected in series. One end of the first resistor and the first capacitor are electrically connected to the first terminal of the switching module, and the other end is electrically connected to the input terminal of the DP connector. This series combination design allows the DP 1.4 signal to be filtered and impedance matched by the resistor and capacitor during transmission, thereby ensuring signal stability and integrity. The parameters of the resistor and capacitor can be optimized according to specific signal transmission requirements to achieve the best signal processing effect. Its working principle is as follows: the CPU outputs DDI signal and DDI AUX signal, which are configured as DP signals by the BIOS and then connected to the DP connector through the resistor and capacitor.

[0032] During operation, the external controller sends specific control signals to the switching module based on user needs or system settings. When the DP 1.4 function is required, the external controller sends a DP 1.4 switching signal to the switching module. Upon receiving this signal, the switching module establishes the circuit connection with the DP 1.4 circuit module while simultaneously disconnecting from the DP 2.1 circuit module. At this time, the DP 1.4 signal is transmitted to the DP connector via a series combination of a first resistor and a first capacitor, and then sent to the external display to achieve normal display of the DP 1.4 function. This design, by introducing a series combination of a first resistor and a first capacitor into the DP 1.4 circuit module, effectively filters out noise and interference in the signal, improving signal transmission quality. This filtering and impedance matching design ensures the stability and integrity of the DP 1.4 signal during transmission, thereby improving the quality of the display effect. Secondly, this design also improves the reliability and stability of the entire device. Resistors and capacitors, as common circuit components, have high reliability and stability, maintaining good performance under various operating environments. Furthermore, this design facilitates the expansion and upgrading of the device. By adjusting the parameters of resistors and capacitors, signal processing can be easily optimized to suit different display needs.

[0033] Preferably, the DP2.1 circuit module includes a second capacitor, a third capacitor, and a signal conversion module, wherein the second capacitor, the signal conversion module, and the third capacitor are connected in series with the second terminal of the switching module and the input terminal of the DP connector.

[0034] Specifically, in this embodiment, the module includes a second capacitor, a signal conversion module, and a third capacitor, all connected in series. One end of the second capacitor is electrically connected to the second terminal of the switching module, and the other end is connected to the input terminal of the signal conversion module. The output terminal of the signal conversion module is connected to one end of the third capacitor, and the other end of the third capacitor is electrically connected to the input terminal of the DP connector. This series combination design ensures that the DP 2.1 signal is filtered by the capacitor and processed by the signal conversion module during transmission, thereby ensuring efficient signal conversion and stable transmission. Its working principle is as follows: the CPU outputs DDI and DDI AUX signals, which are configured as DP signals by the BIOS. These signals are then connected to the signal conversion module via a capacitor, converted into a DP 2.1 signal, and then output to the DP connector via the capacitor.

[0035] The signal conversion module is the core component of the DP 2.1 circuit module, typically implemented using a dedicated signal conversion chip (such as the ANX7498). This chip performs necessary processing and conversion on the input DP 2.1 signal to meet the interface requirements of the DP connector. Through the signal conversion module, the DP 2.1 signal can be efficiently converted into a format suitable for transmission while maintaining signal integrity and quality.

[0036] During operation, the external controller sends specific control signals to the switching module based on user needs or system settings. When the DP 2.1 function is required, the external controller sends a DP 2.1 switching signal to the switching module. Upon receiving this signal, the switching module establishes the circuit connection with the DP 2.1 circuit module while simultaneously disconnecting from the DP 1.4 circuit module. At this point, the DP 2.1 signal first undergoes preliminary filtering through a second capacitor to remove high-frequency noise and interference. Subsequently, the signal enters the signal conversion module for processing and conversion, and finally passes through a third capacitor for further filtering to ensure signal stability and integrity. The processed signal is then transmitted to an external display via the DP connector, enabling normal display of the DP 2.1 function. This design, by introducing the second and third capacitors into the DP 2.1 circuit module, effectively filters out noise and interference in the signal, improving signal transmission quality. This filtering design ensures the stability and integrity of the DP 2.1 signal during transmission, thereby improving display quality. Furthermore, the introduction of the signal conversion module allows the DP 2.1 signal to be efficiently converted into a suitable transmission format, further improving signal compatibility and reliability. This design not only improves the overall performance of the device but also facilitates its expansion and upgrades. By adjusting the capacitor parameters and optimizing the performance of the signal conversion module, it can easily adapt to different display requirements.

[0037] Preferably, the chip model of the signal conversion module can be ANX7498.

[0038] Specifically, in this embodiment, the ANX7498 signal conversion module is the core component of the DP 2.1 circuit module. This chip can perform necessary processing and conversion on the input DP 2.1 signal to adapt to the interface requirements of the DP connector. Through the ANX7498 chip, the DP 2.1 signal can be efficiently converted into a format suitable for transmission while maintaining signal integrity and quality. The ANX7498 chip also has high-performance signal processing capabilities, supporting high resolution, high refresh rate, and HDR displays, meeting the high-quality display requirements of modern display devices.

[0039] It should be noted that other types of signal conversion modules may be used in other embodiments, which are not specifically limited here, but these solutions are all within the protection scope of this utility model.

[0040] Preferably, the DP2.1 circuit module further includes a power conversion module, the output terminal of which is electrically connected to the power supply terminal of the signal conversion module.

[0041] Specifically, in this embodiment, the output terminal of the power conversion module is electrically connected to the power supply terminal of the ANX7498 signal conversion module, providing stable power support for the signal conversion module. The power conversion module typically consists of a power management chip and necessary peripheral circuitry, capable of converting external power (such as 5V or 3.3V) into the specific voltage required by the ANX7498 chip (such as 1.8V or 1.2V), thereby ensuring stable operation of the signal conversion module under various operating conditions. This design not only improves the power supply reliability of the signal conversion module but also reduces signal distortion and performance degradation caused by power fluctuations, further enhancing the performance and stability of the entire device. The addition of the power conversion module provides stable power support for the signal conversion module, reducing signal distortion and performance degradation caused by power fluctuations, and further improving the performance and stability of the entire device.

[0042] Preferably, the DP2.1 circuit module further includes a crystal oscillator module, which is electrically connected to the signal conversion module.

[0043] Specifically, in this embodiment, the crystal oscillator module typically consists of a crystal oscillator (such as a 24MHz crystal oscillator) and necessary peripheral circuitry, providing a high-precision, high-stability clock signal for the ANX7498 signal conversion module. This clock signal is crucial for the normal operation of the signal conversion module, ensuring synchronous transmission and processing of signals, thereby improving signal integrity and quality. With the stable clock signal provided by the crystal oscillator module, the ANX7498 signal conversion module can process DP 2.1 signals more efficiently, supporting high-resolution, high-refresh-rate, and HDR displays, meeting the high-quality display requirements of modern display devices.

[0044] Preferably, the DP2.1 circuit module further includes an ESD protection module, which is electrically connected to the signal conversion module.

[0045] Specifically, in this embodiment, the ESD protection module typically consists of an ESD protection diode or a dedicated ESD protection chip, effectively preventing electrostatic discharge (ESD) from damaging the signal conversion module. ESD is a common phenomenon, especially in dry environments, where static electricity buildup can cause irreversible damage to sensitive electronic components. By introducing ESD protection modules at the input and output ends of the signal conversion module, the impact of ESD on signal integrity can be effectively reduced, ensuring the stability and reliability of the signal conversion module under various operating environments. The ESD protection module provides electrostatic protection throughout the signal transmission process, protecting the signal conversion module from ESD damage. The processed signal is transmitted to an external display via a DP connector, enabling normal display of the DP 2.1 function.

[0046] In short, the addition of the ESD protection module provides electrostatic protection for the signal conversion module, reducing signal distortion and performance degradation caused by electrostatic discharge, and further improving the performance and stability of the entire device.

[0047] In summary, the DP1.4 and DP2.1 compatible device aims to solve the problem that existing technologies cannot support two standards simultaneously with a single functional module. The core of this device lies in its unique circuit design, which achieves seamless switching between the two DP versions through the coordinated work of a switching module, a DP 1.4 circuit module, a DP 2.1 circuit module, and a DP connector. The switching module flexibly establishes the circuit connection with either the DP 1.4 or DP 2.1 circuit module based on signals from an external controller. The DP 1.4 circuit module effectively filters out noise and interference in the signal through a combination of resistors and capacitors, ensuring stable signal transmission. The DP 2.1 circuit module uses an ANX7498 signal conversion module, combined with a power conversion module and an ESD protection module, which not only achieves efficient signal conversion but also significantly improves signal stability and reliability.

[0048] Compared with existing technologies, the DP1.4 and DP2.1 compatible device offers the following advantages: First, it significantly improves the device's versatility and flexibility. Users can flexibly choose to use either DP1.4 or DP2.1 functions on the same device as needed, without the need to purchase or replace additional hardware modules, thus reducing the device's operating costs. Second, by introducing a power conversion module and an ESD protection module, the device significantly improves the power supply stability and electrostatic discharge protection capabilities of the signal conversion module, effectively reducing signal distortion and performance degradation caused by power fluctuations and electrostatic discharge. Furthermore, the device possesses excellent expandability and compatibility, adapting to different models of displays and display devices, further enhancing its versatility.

[0049] This compatible device not only provides users with a more flexible and efficient display solution, but also offers equipment manufacturers greater design flexibility. It helps simplify the hardware structure of devices, reduce production costs, and simultaneously meet market demands for high-performance, multi-functional display devices. This innovative design provides new ideas and solutions for the technological development of display devices, demonstrating significant innovation and practicality.

[0050] The second embodiment of this utility model provides an electronic device, which includes a controller, a display, and a DP1.4 and DP2.1 compatible device as described in any of the above. The input terminal of the switching module is electrically connected to the output terminal of the controller, and the DP connector is used to connect to the display.

[0051] The above are merely preferred embodiments of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions that fall within the scope of this utility model's concept are protected by this utility model.

Claims

1. A DP1.4 and DP2.1 compatible device, characterized in that, include: The system includes a switching module, a DP1.4 circuit module, a DP2.1 circuit module, and a DP connector. The input terminal of the switching module is electrically connected to the output terminal of an external controller. The first terminal of the switching module is electrically connected to the input terminal of the DP1.4 circuit module. The second terminal of the switching module is electrically connected to the input terminal of the DP2.1 circuit module. The output terminals of both the DP1.4 and DP2.1 circuit modules are electrically connected to the input terminal of the DP connector. The DP connector is used for connection to an external display. The switching module is configured to establish a circuit connection with either the DP1.4 circuit module or the DP2.1 circuit module based on the input signal from the external controller, thereby enabling switching between the DP1.4 circuit module and the DP2.1 circuit module.

2. The compatible device for DP1.4 and DP2.1 according to claim 1, characterized in that, The switching module is a single-pole double-throw switch.

3. The DP 1.4 and DP 2.1 compatible apparatus according to claim 1, wherein, The DP1.4 circuit module includes a first resistor and a first capacitor, which are connected in series with the first terminal of the switching module and the input terminal of the DP connector.

4. The compatible device for DP1.4 and DP2.1 according to claim 1, characterized in that, The DP2.1 circuit module includes a second capacitor, a third capacitor, and a signal conversion module, wherein the second capacitor, the signal conversion module, and the third capacitor are connected in series with the second terminal of the switching module and the input terminal of the DP connector.

5. The compatible device for DP1.4 and DP2.1 according to claim 4, characterized in that, The chip model of the signal conversion module is ANX7498.

6. The compatible device for DP1.4 and DP2.1 according to claim 4, characterized in that, The DP2.1 circuit module also includes a power conversion module, the output of which is electrically connected to the power supply terminal of the signal conversion module.

7. The compatible device for DP1.4 and DP2.1 according to claim 4, characterized in that, The DP2.1 circuit module also includes a crystal oscillator module, which is electrically connected to the signal conversion module.

8. The compatible device for DP1.4 and DP2.1 according to claim 4, characterized in that, The DP2.1 circuit module also includes an ESD protection module, which is electrically connected to the signal conversion module.

9. An electronic device, characterized in that, The device includes a controller, a display, and a DP1.4 and DP2.1 compatible device as described in any one of claims 1 to 8, wherein the input of the switching module is electrically connected to the output of the controller, and the DP connector is used to connect to the display.

Images