CN219394910U - Bidirectional conversion circuit and bidirectional adapter - Google Patents
Bidirectional conversion circuit and bidirectional adapter Download PDFInfo
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- CN219394910U CN219394910U CN202320303210.2U CN202320303210U CN219394910U CN 219394910 U CN219394910 U CN 219394910U CN 202320303210 U CN202320303210 U CN 202320303210U CN 219394910 U CN219394910 U CN 219394910U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
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Abstract
The application discloses a bidirectional conversion circuit and a bidirectional adapter, comprising a TYPE-C interface, a DP interface, a multimedia digital signal conversion circuit and a display setting control signal conversion circuit. The multimedia digital signal conversion circuit is used for converting multimedia digital signals between the TYPE-C interface and the DP interface, and the display setting control signal conversion circuit is used for mutually converting EDID information signals and display control signals between the TYPE-C interface and the DP interface. Because the bidirectional conversion circuit can realize bidirectional adaptation of TYPE-C and the DP interface, a user can realize bidirectional conversion of TYPE-C and the DP interface through one bidirectional adapter, thereby facilitating the user and improving the user experience.
Description
Technical Field
The application relates to the technical field of computer peripherals, in particular to a bidirectional conversion circuit and a bidirectional adapter.
Background
The DP interface is a DisplayPort interface, which is a standardized digital video interface, and is mainly used for connecting a video source with a display, and also supports carrying audio, USB and other forms of data. The transmission bandwidth of the DP interface 2.0 is as high as 80Gbps, and is a video connection interface which must be arranged between a high-end display card and a display. The TYPE-C interface is a general-purpose interface widely used for various devices, and also becomes a general-purpose connection interface for display devices. At present, when a user needs to change the DP interface into the Type-C interface and the Type-C interface into the DP interface, two different converters are needed to be prepared, so that the equipment use cost of the user is increased.
Disclosure of Invention
The technical problem that this application was solved in advance is how to realize the bidirectional conversion of TYPE-C and DP interface.
In a first aspect, in one embodiment, a bidirectional conversion circuit is disclosed, including a TYPE-C interface, a DP interface, a multimedia digital signal conversion circuit, and a display setting control signal conversion circuit;
the TYPE-C interface is respectively connected with the multimedia digital signal conversion circuit and the display setting control signal conversion circuit;
the DP interface is respectively connected with the multimedia digital signal conversion circuit and the display setting control signal conversion circuit;
the multimedia digital signal conversion circuit is used for converting multimedia digital signals between the TYPE-C interface and the DP interface, and when the DP interface is used as the input end of the bidirectional conversion circuit, video signals input by the DP interface are converted by the multimedia digital signal conversion circuit and then sent to the TYPE-C interface;
the display setting control signal conversion circuit is used for mutually converting the EDID information signal and the display control signal between the TYPE-C interface and the DP interface, and when the TYPE-C interface is used as the input end of the bidirectional conversion circuit, the video signal input by the TYPE-C interface is converted by the display setting control signal conversion circuit and then sent to the DP interface.
In one embodiment, the multimedia digital signal conversion circuit comprises a VL170 chip; and completing the conversion of the multimedia digital signals between the DP interface and the TYPE-C interface through the VL170 chip.
In one embodiment, the display setting control signal conversion circuit includes a CH7213 chip, and the mutual conversion of the EDID information signal and the display control signal between the DP interface and the TYPE-C interface is completed through the CH7213 chip.
In one embodiment, the TYPE-C interface comprises a TYPE-C connector and a TYPE-C interface chip, wherein the TYPE-C connector is connected with a TX1+ signal connection end, a TX 1-signal connection end, a TX2+ signal connection end, a TX 2-signal connection end, a RX1+ signal connection end, a RX 1-signal connection end, a RX2+ signal connection end and a RX 2-signal connection end of the TYPE-C interface chip; and the TYPE-C interface chip is respectively connected with the multimedia digital signal conversion circuit and the display setting control signal conversion circuit.
In one embodiment, the TYPE-C connector is a female connector or a male connector.
In one embodiment, the DP interface includes a DP connector and a DP interface chip, where the DP connector is connected to an ml0+ signal connection terminal, an ML 0-signal connection terminal, an ml1+ signal connection terminal, an ML 1-signal connection terminal, an ml2+ signal connection terminal, an ML 2-signal connection terminal, an ml3+ signal connection terminal, and an ML 3-signal connection terminal of the DP interface chip; the DP interface chip is respectively connected with the multimedia digital signal conversion circuit and the display setting control signal conversion circuit.
In an embodiment, the DP connector is a female connector or a male connector.
In an embodiment, the DP interface further includes an electrostatic protection circuit, and the electrostatic protection circuit is connected between the DP connector and the DP interface chip.
In one embodiment, the bidirectional conversion circuit further comprises a power conversion circuit, and the power conversion circuit is connected with the TYPE-C interface; the power supply conversion circuit is used for converting a first direct current power supply connected with the TYPE-C interface into a second direct current power supply supporting the DP interface when the TYPE-C interface is used as an input end of the bidirectional conversion circuit, and using the second direct current power supply as a power supply of the bidirectional conversion circuit.
In a second aspect, an embodiment discloses a bidirectional adapter, including the bidirectional conversion circuit of the first aspect, where the bidirectional adapter is used for bidirectional conversion of a TYPE-C interface and a DP interface.
According to the bidirectional adapter of the embodiment, the bidirectional conversion circuit can realize bidirectional adaptation of the TYPE-C and the DP interface, so that a user can realize bidirectional conversion of the TYPE-C and the DP interface through one bidirectional adapter, and further convenience is brought to the user, and user experience is improved.
Drawings
FIG. 1 is a schematic diagram of a circuit frame of a bi-directional conversion circuit in one implementation;
FIG. 2 is a schematic diagram of the connection of VL170 chip circuitry in one embodiment;
FIG. 3 is a schematic diagram showing the circuit connection of a CH7213 chip in one embodiment;
FIG. 4 is a schematic diagram of circuit connections of a TYPE-C interface chip in one embodiment;
FIG. 5 is a schematic diagram showing a circuit connection of a DP interface chip according to one embodiment;
fig. 6 is a schematic circuit diagram of a power conversion circuit in an embodiment.
Detailed Description
The utility model will be described in further detail below with reference to the drawings by means of specific embodiments. Wherein like elements in different embodiments are numbered alike in association. In the following embodiments, numerous specific details are set forth in order to provide a better understanding of the present application. However, one skilled in the art will readily recognize that some of the features may be omitted, or replaced by other elements, materials, or methods in different situations. In some instances, some operations associated with the present application have not been shown or described in the specification to avoid obscuring the core portions of the present application, and may not be necessary for a person skilled in the art to describe in detail the relevant operations based on the description herein and the general knowledge of one skilled in the art.
Furthermore, the described features, operations, or characteristics of the description may be combined in any suitable manner in various embodiments. Also, various steps or acts in the method descriptions may be interchanged or modified in a manner apparent to those of ordinary skill in the art. Thus, the various orders in the description and drawings are for clarity of description of only certain embodiments, and are not meant to be required orders unless otherwise indicated.
The numbering of the components itself, e.g. "first", "second", etc., is used herein merely to distinguish between the described objects and does not have any sequential or technical meaning. The terms "coupled" and "connected," as used herein, are intended to encompass both direct and indirect coupling (coupling), unless otherwise indicated.
Example 1
Referring to fig. 1, a schematic circuit diagram of a bidirectional conversion circuit in an embodiment is shown, and the bidirectional conversion circuit includes a TYPE-C interface 10, a DP interface 20, a multimedia digital signal conversion circuit 30, and a display setting control signal conversion circuit 40. The TYPE-C interface 10 is connected to the multimedia digital signal conversion circuit 30 and the display setting control signal conversion circuit 40, respectively. The DP interface 20 is connected to the multimedia digital signal conversion circuit 30 and the display setting control signal conversion circuit 40, respectively. The multimedia digital signal conversion circuit 30 is used for converting multimedia digital signals between the TYPE-C interface 10 and the DP interface 20, and when the DP interface 20 is used as an input terminal of the bidirectional conversion circuit, video signals input by the DP interface 20 are converted by the multimedia digital signal conversion circuit 30 and then transmitted to the TYPE-C interface 10. The display setting control signal conversion circuit 40 is used for mutual conversion of the EDID information signal and the display control signal between the TYPE-C interface 10 and the DP interface 20, and when the TYPE-C interface 10 is used as an input terminal of the bidirectional conversion circuit, the video signal input by the TYPE-C interface 10 is converted by the display setting control signal conversion circuit 40 and then transmitted to the DP interface 20. In one embodiment, the multimedia digital signal conversion circuit 30 includes a VL170 chip, and the conversion of the multimedia digital signal between the DP interface 20 and the TYPE-C interface 10 is performed through the VL170 chip. In one embodiment, the display setting control signal conversion circuit 40 includes a CH7213 chip, and the mutual conversion of the EDID information signal and the display control signal between the DP interface 20 and the TYPE-C interface 10 is accomplished through the CH7213 chip.
Referring to FIG. 2, a schematic diagram of the connection of VL170 chip circuitry in one embodiment, the VL170 chip supporting the use of a crossbar between the four-channel DisplayPort source input and the two-channel USB3.1 host input to the USB-C connector. The VL170 chip incorporates an internal low-dropout voltage regulator with a supply voltage of 3.3V and uses QFN-28-3.5X4.5mm green packaging.
Please refer to fig. 3, which is a schematic diagram illustrating a circuit connection of a CH7213 chip in an embodiment, wherein the CH7213 chip is a logic chip, and the conversion between DP and Type-C interface protocol is implemented through different applications. The CH7213 chip is a low-cost and low-power-consumption device aiming at a TYPE-C interface, is specially designed for a video converter and a multifunctional docking station, and realizes the conversion of interface data through a decoding/encoding algorithm carried by the CH7213 chip.
In one embodiment, TYPE-C interface 10 comprises a TYPE-C connector and a TYPE-C interface chip. Referring to FIG. 4, a schematic circuit connection diagram of a TYPE-C interface chip in an embodiment is shown, wherein a TYPE-C connector is connected with a TX1+ signal connection end, a TX 1-signal connection end, a TX2+ signal connection end, a TX 2-signal connection end, a RX1+ signal connection end, a RX 1-signal connection end, a RX2+ signal connection end and a RX 2-signal connection end of the TYPE-C interface chip. The TYPE-C interface chip is connected to the multimedia digital signal conversion circuit 30 and the display setting control signal conversion circuit 40, respectively. In one embodiment, the TYPE-C connector is a female or male connector.
In one embodiment, the DP interface 20 includes a DP connector and a DP interface chip. Please refer to fig. 5, which is a schematic diagram illustrating a circuit connection of the DP interface chip in an embodiment, wherein the DP connector is connected to the ml0+ signal connection terminal, the ML 0-signal connection terminal, the ml1+ signal connection terminal, the ML 1-signal connection terminal, the ml2+ signal connection terminal, the ML 2-signal connection terminal, the ml3+ signal connection terminal, and the ML 3-signal connection terminal of the DP interface chip. The DP interface chip is connected to the multimedia digital signal conversion circuit 30 and the display setting control signal conversion circuit 40, respectively. In one embodiment, the DP interface 20 further includes an electrostatic protection circuit, and the electrostatic protection circuit is connected between the DP connector and the DP interface chip. In one embodiment, the electrostatic protection circuit includes a RCLAMP0524P protection chip, where the RCLAMP0524P protection chip is an ultra low capacitance TVS tube that protects the high speed data interface from over voltage damage caused by electrostatic discharge (ESD), cable Discharge (CDE), and Electrical Fast Transient (EFT), and has a typical capacitance between input/output pins of only 0.30pf, which makes it applicable to circuits with operating frequencies exceeding 3GHz and no signal attenuation. The RCLAMP0524P protection chip adopts SLP2510P8 (2.5X1.0X0.58 mm) 10 pins for packaging, is convenient for the continuous production of a circuit chip mounter, and has the advantages of small-size packaging, low capacitance value and high-level electrostatic protection effect. In one embodiment, the DP connector is a female connector or a male connector.
As shown in FIG. 1, in one embodiment, the bi-directional conversion circuit further comprises a power conversion circuit 50, wherein the power conversion circuit 50 is connected to the TYPE-C interface 10. The power conversion circuit 50 is configured to convert a first dc power input by the TYPE-C interface 10 into a second dc power supporting the DP interface 20 when the TYPE-C interface 10 is used as an input terminal of the bidirectional conversion circuit, and to use the second dc power as a power supply of the bidirectional conversion circuit, i.e. to supply power to the VL170 chip and the CH7213 chip.
Referring to fig. 6, a schematic circuit diagram of a power conversion circuit in an embodiment is shown, and in an embodiment, the power conversion circuit includes a buck regulator AMS1117. In one embodiment, the voltage value of the first dc power supply is 5V, and the voltage value of the second dc power supply is 3.3V. In one embodiment, when the DP interface is used as the input terminal of the bi-directional conversion circuit, the dc power input by the DP interface is used as the second dc power source to supply power to the VL170 chip and the CH7213 chip.
The embodiment of the application also discloses a bidirectional adapter of the TYPE-C interface and the DP interface, which comprises the bidirectional conversion circuit for bidirectional conversion of the TYPE-C interface and the DP interface.
In one embodiment, the working principle of the bidirectional adapter of the TYPE-C interface and the DP interface is as follows:
when the DP connector is used as an input end, the bidirectional adapter transmits a video signal (the highest support 7680 is 4320@60 Hz) of the DP interface to one data channel of the VL170 chip through a first data line, the VL170 chip is used for switching an internal switch to transmit the video signal to a connecting end of the Type-C interface, EDID information, control signals and the like output by the DP interface are connected into the CH7213 chip through an AUX auxiliary channel, and an internal logic conversion circuit of the CH7213 chip is used for converting a DP interface protocol into a protocol supporting the Type-C interface, so that the process of converting the DP signal into the Type-C signal is realized.
When the Type-C connector is used as an input end, the bidirectional adapter transmits video signals (the highest support is 7680 x 4320@60 Hz) input by the Type-C interface to the VL170 chip through the second data line, the other path of data channels of the VL170 chip transmits the Type-C signals to the DP interface through the internal switch of the VL170 chip, EDID information, control signals and the like output by the Type-C interface are connected to the CH7213 chip, and the Type-C interface protocol is converted into the support DP interface protocol through the logic conversion circuit in the CH7213 chip, so that the process of converting the Type-C signals into the DP signals is realized.
The bidirectional adapter disclosed in an embodiment of the application can convert an 8K60Hz ultra-high definition signal source (such as a computer host/PC notebook or other devices) with a DP interface into HDMI high definition interface signal output, is more suitable for display devices (such as an ultra-high definition television/display and the like) with HDMI interfaces, avoids the problem of incompatibility between the DP signal source and the rear display device interface, and is more convenient for users to use; secondly, the secondary bidirectional adapter supports 8K60Hz (7680 x 4320@60 Hz) ultrahigh resolution conversion, which is 4 times that of the traditional 4K60Hz resolution (3840 x 2160@60 Hz) pixel point, the image quality is finer and smoother, the definition is higher, the brought visual experience is stronger, and the resolutions of 4K@120Hz, 4K@240Hz, 1080P@240Hz, 720P@60Hz and the like are supported; in addition, the bidirectional adapter supports VRR variable refresh rate, and the technology aims at a display, other display devices of a television, reduces or eliminates picture delay, blocking and tearing, and can still keep smooth and tearing-free pictures when receiving the images with the variable frame rate of a game; in addition, this bi-directional adapter supports QMS, QFT and all, wherein QMS: quick Media Switching- -fast media switching in the past, when a television picture is switched under different frame rates, particularly when different images of a television program, game, movie, etc., are played at the source, a black picture of about 1-3 seconds appears. The QMS uses the characteristic of variable frame rate of VRR to change the player, such as game host, from playing to playing, without black screen, and can switch between 24Hz to 60 Hz. QFT: quick Frame Transport-fast frame transmission the HDMI 2.1 increases the transmission rate per frame of frames, and the QFT technique can effectively reduce the Display Latency and increase the interactive response rate. The Display Latency is composed of a plurality of parts such as an input circuit, image transmission, GPU processing and the like, and HDMI only occupies one part of the parts. The improved transmission speed of QFT can reduce delay and provide smoother game experience and instant interaction experience. ALLM: auto Low Latency Mode-automatic low delay Mode ALLM when the television detects that a Game screen is input, the ideal delay Mode, such as Game Mode, is automatically set to achieve smooth, non-stagnant, and uninterrupted screen effects and interactivity. Typically, such a Game Mode television will turn off part of the screen optimization function and the motion picture processing to reduce the delay of the image, so that the video Mode is not the optimal video Mode, but is quite practical for playing games.
The bidirectional conversion circuit disclosed in the application embodiment comprises a TYPE-C interface, a DP interface, a multimedia digital signal conversion circuit and a display setting control signal conversion circuit. The multimedia digital signal conversion circuit is used for converting multimedia digital signals between the TYPE-C interface and the DP interface, and the display setting control signal conversion circuit is used for mutually converting EDID information signals and display control signals between the TYPE-C interface and the DP interface. Because the bidirectional conversion circuit can realize bidirectional adaptation of TYPE-C and the DP interface, a user can realize bidirectional conversion of TYPE-C and the DP interface through one bidirectional adapter, thereby facilitating the user and improving the user experience.
The foregoing description of specific examples has been presented only to aid in the understanding of the present application and is not intended to limit the present application. Several simple deductions, modifications or substitutions may also be made by the person skilled in the art to which the present application pertains, according to the idea of the present application.
Claims (10)
1. The bidirectional conversion circuit is characterized by comprising a TYPE-C interface, a DP interface, a multimedia digital signal conversion circuit and a display setting control signal conversion circuit;
the TYPE-C interface is respectively connected with the multimedia digital signal conversion circuit and the display setting control signal conversion circuit;
the DP interface is respectively connected with the multimedia digital signal conversion circuit and the display setting control signal conversion circuit;
the multimedia digital signal conversion circuit is used for converting multimedia digital signals between the TYPE-C interface and the DP interface, and when the DP interface is used as the input end of the bidirectional conversion circuit, video signals input by the DP interface are converted by the multimedia digital signal conversion circuit and then sent to the TYPE-C interface;
the display setting control signal conversion circuit is used for mutually converting the EDID information signal and the display control signal between the TYPE-C interface and the DP interface, and when the TYPE-C interface is used as the input end of the bidirectional conversion circuit, the video signal input by the TYPE-C interface is converted by the display setting control signal conversion circuit and then sent to the DP interface.
2. The bi-directional conversion circuit of claim 1 wherein said multimedia digital signal conversion circuit comprises a VL170 chip; and completing the conversion of the multimedia digital signals between the DP interface and the TYPE-C interface through the VL170 chip.
3. The bi-directional conversion circuit according to claim 1, wherein the display setting control signal conversion circuit includes a CH7213 chip, and the mutual conversion of the EDID information signal and the display control signal between the DP interface and the TYPE-C interface is accomplished through the CH7213 chip.
4. The bi-directional switching circuit of claim 1 wherein said TYPE-C interface comprises a TYPE-C connector and a TYPE-C interface chip, said TYPE-C connector being connected to a TX1+ signal connection, a TX 1-signal connection, a TX2+ signal connection, a TX 2-signal connection, a RX1+ signal connection, a RX2+ signal connection, and a RX 2-signal connection of said TYPE-C interface chip; and the TYPE-C interface chip is respectively connected with the multimedia digital signal conversion circuit and the display setting control signal conversion circuit.
5. The bi-directional switching circuit of claim 4 wherein said TYPE-C connector is either a female or male connector.
6. The bi-directional conversion circuit according to claim 1, wherein the DP interface comprises a DP connector and a DP interface chip, the DP connector being connected to an ml0+ signal connection terminal, an ML 0-signal connection terminal, an ml1+ signal connection terminal, an ML 1-signal connection terminal, an ml2+ signal connection terminal, an ML 2-signal connection terminal, an ml3+ signal connection terminal, and an ML 3-signal connection terminal of the DP interface chip; the DP interface chip is respectively connected with the multimedia digital signal conversion circuit and the display setting control signal conversion circuit.
7. The bi-directional switching circuit of claim 6 wherein said DP connector is a female connector or a male connector.
8. The bi-directional conversion circuit of claim 6, wherein the DP interface further comprises an electrostatic protection circuit connected between the DP connector and the DP interface chip.
9. The bi-directional conversion circuit of claim 1 further comprising a power conversion circuit, said power conversion circuit being connected to said TYPE-C interface; the power supply conversion circuit is used for converting a first direct current power supply connected with the TYPE-C interface into a second direct current power supply supporting the DP interface when the TYPE-C interface is used as an input end of the bidirectional conversion circuit, and using the second direct current power supply as a power supply of the bidirectional conversion circuit.
10. A bi-directional adapter comprising a bi-directional translation circuit as recited in any of claims 1-9 for bi-directional translation of a TYPE-C interface and a DP interface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320303210.2U CN219394910U (en) | 2023-02-14 | 2023-02-14 | Bidirectional conversion circuit and bidirectional adapter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320303210.2U CN219394910U (en) | 2023-02-14 | 2023-02-14 | Bidirectional conversion circuit and bidirectional adapter |
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| Publication Number | Publication Date |
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| CN219394910U true CN219394910U (en) | 2023-07-21 |
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| CN202320303210.2U Active CN219394910U (en) | 2023-02-14 | 2023-02-14 | Bidirectional conversion circuit and bidirectional adapter |
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