CN212749821U - Data conversion device and terminal equipment - Google Patents
Data conversion device and terminal equipment Download PDFInfo
- Publication number
- CN212749821U CN212749821U CN202020661517.6U CN202020661517U CN212749821U CN 212749821 U CN212749821 U CN 212749821U CN 202020661517 U CN202020661517 U CN 202020661517U CN 212749821 U CN212749821 U CN 212749821U
- Authority
- CN
- China
- Prior art keywords
- signal port
- data conversion
- data
- microprocessor
- media data
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
Abstract
The utility model discloses a data conversion equipment and terminal equipment, data conversion equipment includes: the system comprises a TypeC interface, a selector switch, a first data conversion chip, a second data conversion chip, a PD controller and a microprocessor; the change-over switch is provided with a first signal port, a second signal port, a third signal port and a control signal port; the TypeC interface is connected with a first signal port of the change-over switch, a second signal port of the change-over switch is connected with the microprocessor through a first data conversion chip, and a third signal port of the change-over switch is connected with the microprocessor through a second data conversion chip; the PD controller is connected with change over switch's control signal port or microprocessor is connected with change over switch's control signal port, and the type C interface passes through the PD controller to be connected with microprocessor, the embodiment of the utility model provides an have the effect that data interface is small in quantity and equipment integrated level is high.
Description
Technical Field
The embodiment of the utility model provides a relate to media data processing field, especially relate to a data conversion equipment and terminal equipment.
Background
The TypeC interface supports the insertion of positive and negative two directions, and the integration has the function of charging, demonstration and data transmission simultaneously. In the related technology, a type C interface of a terminal device supports transmission of DP format media data, when it is recognized that an external device is a video input device, the DP format media data from the type C interface is received, format conversion is performed on the DP format media data to obtain HDMI format media data, and the HDMI format media data is decompressed and decoded to be displayed on a display screen. When the terminal equipment is used as video output equipment and needs to send the HDMI format media data to external equipment, the HDMI interface is set to send the HDMI format media data to the external equipment, so that a TypeC interface and an HDMI interface are simultaneously arranged on the terminal equipment, the number of data interfaces on the terminal equipment is large, and the equipment integration level is low.
SUMMERY OF THE UTILITY MODEL
The embodiment of the utility model provides a data conversion equipment and terminal equipment to the realization is received the media data who comes from external equipment and is sent the media data that inside generated for external equipment through the TypeC interface, reduces the quantity of data interface on the terminal equipment, improves terminal equipment's integrated level.
In a first aspect, an embodiment of the present invention provides a data conversion apparatus, the data conversion apparatus includes: the system comprises a TypeC interface, a selector switch, a first data conversion chip, a second data conversion chip, a PD controller and a microprocessor; the change-over switch is provided with a first signal port, a second signal port, a third signal port and a control signal port;
the TypeC interface is connected with a first signal port of the change-over switch, a second signal port of the change-over switch is connected with the microprocessor through the first data conversion chip, and a third signal port of the change-over switch is connected with the microprocessor through the second data conversion chip; the PD controller is connected with a control signal port of the selector switch or the microprocessor is connected with a control signal port of the selector switch, and the TypeC interface is connected with the microprocessor through the PD controller;
the first data switching chip is used for converting DP format media data from the TypeC interface into first format media data, and the second data switching chip is used for converting the first format media data from the microprocessor into DP format media data.
Alternatively, the first format media data is HDMI format media data, DVI format media data, or VGA format media data.
As an alternative, the TypeC interface includes a differential signal transmission pin, the differential signal transmission pin is connected to a first signal port of the TypeC interface, and when the first signal port is communicated with a second signal port, the differential signal transmission pin is used for receiving first format media data from the first data conversion chip; when the first signal port is communicated with the third signal port, the differential signal transmission pin is used for receiving DP format media data from external equipment. The first format media data and the DP format media data may be audio data or video data
As an alternative, the TypeC interface includes a channel configuration pin to which the PD controller is connected, and the PD controller identifies whether an external device inserted into the TypeC interface is a media input device or a media output device by detecting a voltage value on the channel configuration pin.
As an alternative, when the PD controller detects that the level on the channel configuration pin is a high level, the first signal port and the second signal port are in a connected state; when the PD controller detects that the level on the channel configuration pin is low level, the first signal port and the third signal port are in a communication state; or
When the PD controller detects that the level on the channel configuration pin is low level, the first signal port and the second signal port are in a communication state; when the PD controller detects that the level on the channel configuration pin is a high level, the first signal port and the third signal port are in a connected state.
As an alternative, the TypeC interface further includes a USB2.0 data transmission pin, the USB2.0 data transmission pin is connected to the microprocessor, and when the external device is a USB2.0 device, the microprocessor performs read-write operation on the external device through the USB2.0 data transmission pin.
Alternatively, the first data conversion chip and the second data conversion chip are integrally provided, for example: the first data conversion chip and the second data conversion chip are packaged in the same chip.
As an alternative, the TypeC interface is a female header.
Alternatively, the diverter switch is a single pole double throw switch.
In a second aspect, the present application provides a terminal device, including any one of the above data conversion devices.
According to the data conversion device provided by the embodiment, when the external device is connected to the TypeC interface, the DP controller detects the data role type of the external device, when the external device is a media input device, the PD controller or the microprocessor sends a control signal to the selector switch to control the first signal port and the second signal port to be communicated, so that the first data conversion chip converts the first format media data generated by the microprocessor into the DP format media data, and then sends the DP format media data to the external device through the TypeC interface. When the external device is a media output device, the DP controller or the microprocessor sends a control signal to the switch to control the switch to communicate the first signal port with the third signal port, so that the second data conversion chip can convert DP format media data sent by the external device through the type c interface into first format media data, and then sends the first format media data to the microprocessor, and receives media data from the external device through the type c interface and sends internally generated media data to the external device.
Drawings
Fig. 1 is a schematic diagram of a connection structure between an external device and a terminal device provided by an embodiment of the present invention;
fig. 2 is a schematic structural diagram of another embodiment of a data conversion device according to an embodiment of the present invention;
FIG. 3 is a pin layout diagram of a TypeC interface;
fig. 4 is a schematic structural diagram of another implementation of a data conversion device according to an embodiment of the present invention.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. In addition, it should be noted that, for convenience of description, only a part of the structure related to the present invention is shown in the drawings, not the whole structure.
Furthermore, the terms first, second, third and the like in the description and in the claims, are used for descriptive purposes only to distinguish one element from another, and are not to be construed as indicating or implying relative importance or implying any order or order to the indicated elements. The terms are interchangeable where appropriate. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature.
Similarly, the term "coupled", as used in the description and in the claims, should not be construed as limited to direct coupling. Thus, the expression "device a is connected to device B" should not be limited to devices or systems in which device a is directly connected to device B, meaning that there is a path between device a and device B, which may be a path including other devices or tools.
Fig. 1 is a schematic connection diagram of an external device and a terminal device provided by an embodiment of the present invention. The data conversion device can be arranged in the terminal equipment 2, the data conversion device comprises a TypeC interface 21, the external equipment 1 communicates with the terminal equipment 2 through the TypeC interface 21, for example, the external equipment 1 and the terminal equipment 2 are both provided with TypeC interfaces, the external equipment 1 is connected with the terminal equipment 2 through a TypeC cable, and when the TypeC interface on the external equipment 1 is a male connector, the corresponding TypeC interface on the terminal equipment 2 is a female connector; when the TypeC interface on the external device 1 is a female connector, the TypeC interface on the corresponding terminal device 2 is a male connector. The external device 1 can be classified as a media input device or a media output device according to the data role type, when the external device 1 is the media output device and the external device 1 is a signal source, the external device 1 sends the generated media data to the terminal device 1 for displaying; when the external device 1 is a media input device, the media data generated by the terminal device 2 is transmitted to the external device 1 and displayed.
Fig. 2 is a schematic structural diagram of an implementation manner of the data conversion device provided in the embodiment of the present invention, the data conversion device is disposed in the terminal device 2, and the data conversion device includes: a TypeC interface 21, a switch 22, a first data conversion chip 23, a second data conversion chip 24, a microprocessor 25 and a PD controller 26. The changeover switch 22 is provided with a first signal port 1, a second signal port 2, a third signal port 3, and a control signal port 4. The first data conversion chip 23 is used for converting the first format media data into DP format media data, and the second data conversion chip 24 is used for converting the DP format media data into the first format media data. The first format media data may be audio data or video data, such as: the first format media data includes, but is not limited to, HDMI format media data, DVI format media data, and VGA format media data. Optionally, the TypeC interface 21 may be a male or female. Optionally, the switch 22 is a single-pole double-throw switch, the switch 22 has two signal transmission channels, and only one signal transmission channel of the switch 22 is in a connected state at the same time. Optionally, the first data conversion chip 23 and the second data conversion chip 24 may be packaged in the same chip, so as to improve the integration level of the terminal device.
Wherein, the connection relation of each part in the data conversion device comprises: the TypeC interface 21 is connected to the first communication port 1 of the switch 22, the second communication port 2 of the switch 22 is connected to the microprocessor 25 through the first data conversion chip 23, and the third communication port 3 of the switch 22 is connected to the microprocessor 25 through the second data conversion chip 24. The TypeC interface 21 is connected to the microprocessor 25 through the PD controller 26, and the PD controller 26 is connected to the control signal port 4 of the changeover switch 22. The microprocessor 25 may be connected to the first data conversion chip 23, the second data conversion chip 24, and the PD controller 26 through different IO ports.
The working process of the data conversion device comprises the following steps: when an external device is inserted into the TypeC interface 21, the PD controller 26 identifies the data role type of the external device, and when the external device is a media output device (that is, the external device is a signal source), the PD controller 26 sends a first control signal to the switch 22 through the control signal port 4, and the switch 22 receives the first control signal and connects the first communication port 1 and the third communication port 3 according to the first control signal, so that the first communication port 1 and the second communication port 2 are in an off state; when the PD controller recognizes that the external device is the media output device, it sends a first notification signal to the microprocessor 25, and the microprocessor 25 knows that the external device is the media output device according to the first notification signal, and the microprocessor 25 is ready to receive the first format media data. The external device sends DP format media data to the data conversion device through the TypeC interface 21, the DP format media data can only be sent to the second data conversion chip 24 through the first signal port 1 and the third signal port 3, the second data conversion chip 24 converts the DP format media data into first format media data (such as HDMI format media data in fig. 2), the converted first format media data is sent to the microprocessor 25, the microprocessor 25 decompresses and decodes the first format media data, and when the first format media data is video data, the microprocessor 25 displays the processed first format media data on the display unit.
When the PD controller 26 recognizes that the external device is a media input device, the PD controller 26 sends a second control signal to the switch 22 through the control signal port 4, and the switch 22 receives the second control signal and connects the first signal port 1 and the second signal port 2 according to the second control signal, so that the first signal port 1 and the third signal port 3 are in an off state; in addition, when recognizing that the external device is the media input device, the PD controller 26 transmits a second notification signal to the microprocessor 25, and the microprocessor 25 recognizes that the external device is the media input device based on the second notification signal, and the microprocessor 25 prepares to transmit the DP format media data. The microprocessor 25 generates DP format media data, sends the DP format media data to the first data conversion chip 23 through the IO port, the first data conversion chip 23 performs format conversion on the DP format media data to obtain first format media data (such as HDMI format media data in fig. 1), the first data conversion chip 23 sends the first format media data to the switch 22, at this time, the first format media data can only send the first format media data to the TypeC interface 21 through the third signal port 3 and the first signal port 1, and then the TypeC interface 21 sends the first format media data to an external device.
The first control signal, the second control signal, the first notification signal, and the second notification signal may be level signals, and the switch 22 controls the conduction of the first signal channel (the first signal port 1 to the second signal port 2) or the second signal channel (the first signal port 1 to the third signal port 3) according to the level of the received control signal. The microprocessor 25 recognizes that the external device is a media input device or a media output device according to the level of the received notification signal.
Optionally, the TypeC interface 21 includes at least one pair of differential signal transmission pins, and the first signal port 1 of the switch 22 is connected to the at least one pair of differential signal transmission pins.
Referring to fig. 3, the pins a1 to a12 in fig. 3 are one row, and the pins B1 to B12 are the other row, which support forward insertion or reverse insertion. The TypeC interface 21 includes two pairs of power pins, two pairs of differential pins, see a9, B4, B9, and a4 in fig. 3, four pairs of differential pins, see a11, B2, a10, B3, a4, B10, a2, and B11 in fig. 3, and a CC channel configuration pin, see a5 in fig. 3, for paired communication when paired. Wherein, TX +, TX-, RX + and RX-in each group of pins are differential signal transmission pins, and each group of differential signal transmission pins support the operation in a USB mode or a DP (DisplayPort) mode. When the differential signal transmission pin pair works in a USB mode, the signal transmission pin pair transmits a USB3.0 signal; when the differential signaling pin pair operates in the DP mode, the signaling pin pair serves as a DP (displayport) interface.
Optionally, the TypeC interface 21 includes a channel configuration pin, the PD controller is connected to the channel configuration pin, and the PD controller identifies whether the external device inserted into the TypeC interface is a media input device or a media output device by detecting a voltage value on the channel configuration pin.
Optionally, when the PD controller detects that the level on the channel configuration pin is a high level, the first signal port and the second signal port are in a connected state; when the PD controller detects that the level on the channel configuration pin is low level, the first signal port and the third signal port are in a communication state; or
When the PD controller detects that the level on the channel configuration pin is low level, the first signal port and the second signal port are in a communication state; when the PD controller detects that the level on the channel configuration pin is a high level, the first signal port and the third signal port are in a connected state.
Referring to fig. 4, another schematic structural diagram of a data conversion apparatus provided in an embodiment of the present application is shown, where the data conversion apparatus includes: a TypeC interface 21, a switch 22, a first data conversion chip 23, a second data conversion chip 24, a microprocessor 25 and a PD controller 26. The changeover switch 22 is provided with a first signal port 1, a second signal port 2, a third signal port 3, and a control signal port 4.
The connection relationship between the components in the data conversion device of the present application and fig. 2 is different only in that: the PD controller 26 is not connected to the control signal port 4 of the changeover switch 22, and the microprocessor 25 is connected to the control signal port 4 of the changeover switch 22. The connection mode of other components in fig. 4 can be described with reference to fig. 2, and is not described again here.
The working process of the data conversion device in the application comprises the following steps:
when the external device is inserted into the TypeC interface 21, the PD controller 26 identifies the data role type of the external device, and when the external device is a media output device (i.e. the external device is a signal source), the PD controller 26 sends a first notification signal to the microprocessor 25, and the microprocessor 25 knows that the external device is the media output device according to the first notification signal, and the microprocessor 25 is ready to receive media data in the first format; then the microprocessor 25 sends a first control signal to the switch 22 through the control signal port 4, and the switch 22 receives the first control signal and connects the first communication port 1 and the third communication port 3 according to the first control signal, so that the first communication port 1 and the second communication port 2 are disconnected. The external device sends DP format media data to the data conversion device through the TypeC interface 21, the DP format media data can only be sent to the second data conversion chip 24 through the first signal port 1 and the third signal port 3, the second data conversion chip 24 converts the DP format media data into first format media data (such as HDMI format media data in fig. 2), the converted first format media data is sent to the microprocessor 25, the microprocessor 25 decompresses and decodes the first format media data, and when the first format media data is video data, the microprocessor 25 displays the processed first format media data on the display unit.
When the PD controller 26 recognizes that the external device is a media input device, the PD controller 26 sends a second notification signal to the microprocessor 25, the microprocessor 25 knows that the external device is a media input device according to the second notification signal, and the microprocessor 25 prepares to send DP format media data; then the microprocessor 25 sends a second control signal to the switch 22 through the control signal port 4, and the switch 22 receives the second control signal and connects the first signal port 1 and the second signal port 2 according to the second control signal, so that the first signal port 1 and the third signal port 3 are in an off state. The microprocessor 25 generates DP format media data, sends the DP format media data to the first data conversion chip 23 through the IO port, the first data conversion chip 23 performs format conversion on the DP format media data to obtain first format media data (such as HDMI format media data in fig. 1), the first data conversion chip 23 sends the first format media data to the switch 22, at this time, the first format media data can only send the first format media data to the TypeC interface 21 through the third signal port 3 and the first signal port 1, and then the TypeC interface 21 sends the first format media data to an external device.
The first control signal, the second control signal, the first notification signal, and the second notification signal may be level signals, and the switch 22 controls the conduction of the first signal channel (the first signal port 1 to the second signal port 2) or the second signal channel (the first signal port 1 to the third signal port 3) according to the level of the received control signal. The microprocessor 25 recognizes that the external device is a media input device or a media output device according to the level of the received notification signal.
Optionally, the TypeC interface 21 includes at least one pair of differential signal transmission pins, and the first signal port 1 of the switch 22 is connected to the at least one pair of differential signal transmission pins.
The TypeC interface 21 has 24 pins in total, including two rows of pins with the same function, and the specific pin distribution can be seen in fig. 3.
Optionally, the TypeC interface 21 includes a channel configuration pin, the PD controller is connected to the channel configuration pin, and the PD controller identifies whether the external device inserted into the TypeC interface is a media input device or a media output device by detecting a voltage value on the channel configuration pin.
Optionally, when the PD controller detects that the level on the channel configuration pin is a high level, the first signal port and the second signal port are in a connected state; when the PD controller detects that the level on the channel configuration pin is low level, the first signal port and the third signal port are in a communication state; or
When the PD controller detects that the level on the channel configuration pin is low level, the first signal port and the second signal port are in a communication state; when the PD controller detects that the level on the channel configuration pin is a high level, the first signal port and the third signal port are in a connected state.
According to the data conversion device provided by the embodiment, when the external device is connected to the TypeC interface, the DP controller detects the data role type of the external device, when the external device is a media input device, the PD controller or the microprocessor sends a control signal to the selector switch to control the first signal port and the second signal port to be communicated, so that the first data conversion chip converts the first format media data generated by the microprocessor into the DP format media data, and then sends the DP format media data to the external device through the TypeC interface. When the external device is a media output device, the DP controller or the microprocessor sends a control signal to the switch to control the switch to communicate the first signal port with the third signal port, so that the second data conversion chip can convert DP format media data sent by the external device through the type c interface into first format media data, and then sends the first format media data to the microprocessor, and receives media data from the external device through the type c interface and sends internally generated media data to the external device.
The embodiment of the utility model provides a meeting instrument system includes the utility model discloses the meeting instrument including peripheral unit and interface converter that arbitrary embodiment provided, consequently, possess corresponding beneficial effect.
It is to be noted that different embodiments or examples and features of different embodiments or examples described in this specification may be combined and combined by one skilled in the art without contradiction.
It should be noted that the foregoing is only a preferred embodiment of the present invention and the technical principles applied. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail with reference to the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the scope of the present invention.
Claims (10)
1. A data conversion apparatus, comprising: the system comprises a TypeC interface, a selector switch, a first data conversion chip, a second data conversion chip, a PD controller and a microprocessor; the change-over switch is provided with a first signal port, a second signal port, a third signal port and a control signal port;
the TypeC interface is connected with a first signal port of the change-over switch, a second signal port of the change-over switch is connected with the microprocessor through the first data conversion chip, and a third signal port of the change-over switch is connected with the microprocessor through the second data conversion chip; the PD controller is connected with a control signal port of the selector switch or the microprocessor is connected with a control signal port of the selector switch, and the TypeC interface is connected with the microprocessor through the PD controller;
the first data conversion chip is used for converting DP format media data from the TypeC interface into first format media data;
the second data conversion chip is used for converting the first format media data from the microprocessor into DP format media data.
2. The data conversion apparatus according to claim 1, wherein the first format media data is HDMI format media data, DVI format media data, or VGA format media data.
3. The data conversion device of claim 1, wherein the TypeC interface comprises at least one pair of differential signaling pins, and the first signal port of the switch is connected to the at least one pair of differential signaling pins.
4. The data conversion device of claim 1, wherein the TypeC interface comprises a channel configuration pin, and wherein the PD controller is coupled to the channel configuration pin.
5. The data conversion apparatus according to claim 4,
when the PD controller detects that the level on the channel configuration pin is a high level, the first signal port and the second signal port are in a communication state; when the PD controller detects that the channel configuration pin is at a low level, the first signal port and the third signal port are in a communication state; or
When the PD controller detects that the level on the channel configuration pin is low level, the first signal port and the second signal port are in a communication state; when the PD controller detects that the channel configuration pin is at a high level, the first signal port and the third signal port are in a connected state.
6. The data conversion device of claim 1, wherein the TypeC interface further comprises a USB2.0 data transfer pin, the USB2.0 data transfer pin being connected to the microprocessor.
7. The data conversion device according to claim 1, wherein the first data conversion chip and the second data conversion chip are provided integrally.
8. The data conversion device of claim 1, wherein the TypeC interface is a female header.
9. The data conversion device of claim 1, wherein the switch is a single pole double throw switch.
10. A terminal device, comprising: a data conversion device as claimed in any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020661517.6U CN212749821U (en) | 2020-04-26 | 2020-04-26 | Data conversion device and terminal equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020661517.6U CN212749821U (en) | 2020-04-26 | 2020-04-26 | Data conversion device and terminal equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212749821U true CN212749821U (en) | 2021-03-19 |
Family
ID=75003210
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020661517.6U Active CN212749821U (en) | 2020-04-26 | 2020-04-26 | Data conversion device and terminal equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212749821U (en) |
-
2020
- 2020-04-26 CN CN202020661517.6U patent/CN212749821U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109286770B (en) | Terminal equipment with USB Type-C interface and data communication method | |
| US10409752B2 (en) | Bidirectional signal conditioning chip including processor determining data transmission direction and type of transmitted data of USB type-C cable and USB type-C cable including the same | |
| US9886413B2 (en) | Displayport over USB mechanical interface | |
| US8151018B2 (en) | Dual-mode data transfer of uncompressed multimedia contents or data communications | |
| CN107301148B (en) | USB Type-C interface conversion module, system and connection method | |
| US8799537B1 (en) | Transfer of uncompressed multimedia contents and data communications | |
| CN107493462B (en) | Video processing apparatus | |
| US20140344494A1 (en) | Docking station with kvm switch | |
| US20220269326A1 (en) | Electronic device, interface control method of electronic device, and system | |
| CN210129132U (en) | Interactive intelligent tablet | |
| CN211831017U (en) | Function expansion device of display equipment and intelligent display system | |
| CN212749821U (en) | Data conversion device and terminal equipment | |
| CN216873301U (en) | Interface circuit, intelligent glasses and control system | |
| CN213880034U (en) | Display device without HDMI interface | |
| CN212324235U (en) | Video signal switching circuit and signal switching equipment | |
| CN212647458U (en) | Novel transmission interface capable of automatically identifying TYPEC or USB flash disk | |
| CN212624036U (en) | TYPE-C interface circuit | |
| CN217883623U (en) | Interface circuit | |
| EP2765571A1 (en) | Micro USB3.0 connector for simultaneous video, power and data transmission (NGC-e) | |
| CN216929106U (en) | Transmission channel control circuit and multi-interface system | |
| CN216085638U (en) | Signal transmission device | |
| CN220915319U (en) | Video matrix switcher and video matrix switching system | |
| CN218275426U (en) | Switching card and control system based on TYPEC interface | |
| CN213582142U (en) | LED integrated system card and display device | |
| US20220229801A1 (en) | Hdmi-free display device and method for type interface being compatible with hdmi |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |