CN220292070U - DP version judging circuit and connection equipment with same - Google Patents
DP version judging circuit and connection equipment with same Download PDFInfo
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- CN220292070U CN220292070U CN202321569455.6U CN202321569455U CN220292070U CN 220292070 U CN220292070 U CN 220292070U CN 202321569455 U CN202321569455 U CN 202321569455U CN 220292070 U CN220292070 U CN 220292070U
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Abstract
The utility model provides a DP version judging circuit and a connecting device with the same, wherein the DP version judging circuit is used for judging the DP version of terminal equipment and comprises an interface, a video conversion circuit used for processing video signals transmitted by the terminal equipment through the interface, a DP protocol circuit used for reading information of the video conversion circuit to judge the DP version of the terminal equipment and a prompting component used for prompting the DP version of the terminal equipment, the interface is connected with the terminal equipment, the video conversion circuit is connected with the interface, and the DP protocol circuit is respectively connected with the video conversion circuit and the prompting component. The proposal provided by the utility model can judge the DP version of the terminal equipment more conveniently, help the user to know and master the compatibility of various equipment, realize the support and expansion of various terminal equipment, has wide application range, can provide richer and intelligent video transmission experience for the user, and is also beneficial to improving the compatibility and the use convenience of the equipment.
Description
Technical Field
The utility model belongs to the technical field of electronic circuits, and particularly relates to a DP version judging circuit and a connecting device with the DP version judging circuit.
Background
Various standards and interfaces for accomplishing transmission of video signals between a terminal device and a display device, such as HDMI, displayPort (DP), DVI, etc., have been developed, and DP, which is a high-performance video transmission standard, has advantages of high definition, high refresh rate, etc., and has been widely used in various terminal devices.
However, in practical use, there may be a compatibility problem between DP protocols of different versions and specifications, and the user may not be able to know the version and specification of the DP protocol exactly, that is, the most adapted resolution and frame rate may not be known, which may cause a certain trouble to the user.
For such cases, many related solutions and related products have appeared on the market, such as DP version identification chips, DP adapters, etc. However, these prior art techniques have some drawbacks, such as that some DP identification chips require additional software or driver support, and the operation is not simple and fast enough; while some DP adapters, while powerful, are expensive, the use experience is not satisfactory.
Disclosure of Invention
In order to overcome the defects of the prior art, the utility model provides a DP version judging circuit which is used for judging the DP version of terminal equipment and comprises an interface, a video conversion circuit, a DP protocol circuit and a prompting component, wherein the video conversion circuit is used for processing video signals transmitted by the terminal equipment through the interface, the DP protocol circuit is used for reading information of the video conversion circuit to judge the DP version of the terminal equipment, and the prompting component is used for prompting the DP version of the terminal equipment:
the interface is connected with the terminal equipment, the video conversion circuit is connected with the interface, and the DP protocol circuit is respectively connected with the video conversion circuit and the prompt component.
Optionally, the prompting component includes:
the display circuit is connected with the DP protocol circuit;
and/or an audio circuit connected with the DP protocol circuit.
Specifically, the display circuit includes a first indicator light for lighting when the DP version of the terminal device is the first DP version, and a second indicator light for lighting when the DP version of the terminal device is the second DP version.
Preferably, the first indicator light and the second indicator light have different hues.
Specifically, the video conversion circuit includes a first transmission line supporting a video signal of a first DP version and a second transmission line supporting a video signal of a second DP version.
Specifically, the video conversion circuit comprises a video conversion chip, and the DP protocol circuit comprises a DP protocol chip for reading register information of the video conversion chip.
Specifically, the interface includes a Type-C port and a CC protocol chip, where the Type-C port is used to connect to the terminal device, and the CC protocol chip is used to connect to the DP protocol circuit.
Further, the DP version judging circuit further includes:
the HUB expansion circuit is connected with the interfaces and used for expanding data of one interface of the terminal equipment into a plurality of groups of data signals;
and a plurality of expansion ports, each of which is connected to the HUB expansion circuit to receive the data signal.
The utility model also provides a connecting device for connecting terminal equipment and playing equipment, comprising the DP version judging circuit, wherein the connecting device is connected with the terminal equipment through the interface and is connected with the playing equipment through the video conversion circuit
Optionally, the connection device comprises a USB hub or a docking station.
The utility model has at least the following beneficial effects:
the proposal provided by the utility model can rapidly and accurately judge the DP version of the terminal equipment by reading the information of the video conversion circuit, has the advantage of efficiently judging the DP version, effectively avoids the compatibility problem between the DP protocols of different versions, and is convenient for users to adjust the video resolution and the frame rate which are most suitable for the terminal equipment; the DP version of the terminal equipment is judged by adopting the video conversion chip, so that compared with the traditional method using software or a driving program, the DP version of the terminal equipment is more intelligent and convenient, the judging efficiency and the using convenience can be improved, and the DP version judging method has a wider application range and can be suitable for various terminal equipment to realize video output;
furthermore, the scheme provided by the utility model further comprises a display circuit and a HUB expansion circuit, DP version information of the terminal equipment can be intuitively displayed for a user through the indicator lamp, and the expansion of data of one interface of the terminal equipment into a plurality of groups of data signals is supported, so that the expandability of the connecting equipment is improved.
Therefore, the utility model provides the DP version judging circuit and the connecting device with the DP version judging circuit, the DP version of the terminal device is conveniently judged by the scheme provided by the utility model, the user is helped to know and master the compatibility of various devices, the support and expansion of various terminal devices are realized, the application range is wide, the richer and intelligent video transmission experience can be provided for the user, and the compatibility and the use convenience of the device are improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic block diagram of a DP version determination circuit according to embodiment 1;
fig. 2 is a schematic diagram of specific connection structures of each module of the DP version determination circuit provided in embodiment 1.
Reference numerals
1-interface; a 2-video conversion circuit; a 3-DP protocol circuit; 4-a display circuit; 5-HUB expansion circuit.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Hereinafter, various embodiments of the present utility model will be described more fully. The utility model is capable of various embodiments and of modifications and variations therein. However, it should be understood that: there is no intention to limit the various embodiments of the utility model to the specific embodiments disclosed herein, but rather the utility model is to be understood to cover all modifications, equivalents, and/or alternatives falling within the spirit and scope of the various embodiments of the utility model.
Hereinafter, the terms "comprises" or "comprising" as may be used in various embodiments of the present utility model indicate the presence of the disclosed functions, operations or elements, and are not limiting of the addition of one or more functions, operations or elements. Furthermore, as used in various embodiments of the utility model, the terms "comprises," "comprising," and their cognate terms are intended to refer to a particular feature, number, step, operation, element, component, or combination of the foregoing, and should not be interpreted as first excluding the existence of or increasing likelihood of one or more other features, numbers, steps, operations, elements, components, or combinations of the foregoing.
In various embodiments of the utility model, the expression "or" at least one of a or/and B "includes any or all combinations of the words listed simultaneously. For example, the expression "a or B" or "at least one of a or/and B" may include a, may include B or may include both a and B.
Expressions (such as "first", "second", etc.) used in the various embodiments of the utility model may modify various constituent elements in the various embodiments, but the respective constituent elements may not be limited. For example, the above description does not limit the order and/or importance of the elements. The above description is only intended to distinguish one element from another element. For example, the first user device and the second user device indicate different user devices, although both are user devices. For example, a first element could be termed a second element, and, similarly, a second element could be termed a first element, without departing from the scope of various embodiments of the present utility model.
It should be noted that: in the present utility model, unless explicitly specified and defined otherwise, terms such as "mounted," "connected," "secured," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium; may be a communication between the interiors of the two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.
In the present utility model, it should be understood by those of ordinary skill in the art that the terms indicating an orientation or a positional relationship are based on the orientation or positional relationship shown in the drawings, and are merely for convenience of description and simplicity of description, not to indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the utility model.
The terminology used in the various embodiments of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the various embodiments of the utility model. As used herein, the singular is intended to include the plural as well, unless the context clearly indicates otherwise. Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which various embodiments of the utility model belong. The terms (such as those defined in commonly used dictionaries) will be interpreted as having a meaning that is the same as the context of the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein in connection with the various embodiments of the utility model.
Example 1
Referring to fig. 1 and 2, the present embodiment proposes a DP version determining circuit for determining a DP version of a terminal device, including:
an interface 1, wherein the interface 1 is used for connecting terminal equipment;
the video conversion circuit 2 is connected with the interface 1 and is used for processing video signals transmitted by the terminal equipment through the interface 1;
a DP protocol circuit 3, the DP protocol circuit 3 being connected to the video conversion circuit 2, for reading information of the video conversion circuit 2 to determine a DP version of the terminal device;
and the prompting component is connected with the DP protocol circuit 3 and is used for prompting the DP version judgment result of the terminal equipment.
Specifically, the DP protocol circuit 3 includes a DP protocol chip, the video conversion circuit 2 includes a video conversion chip, the DP protocol chip and the video conversion chip include, but are not limited to, any optional chip of a known model, and the model of the DP protocol chip in this embodiment is FL7102;
the DP protocol circuit 3 reads the information of the video circuit, and further determines the DP version of the terminal device, specifically by reading the register information of the video conversion chip through the DP protocol chip.
It should be noted that a register is a hardware unit for storing and processing computer data, and each register has a unique register address or name, where data can be accessed and operated on by designating the register address or name during program operation.
In this embodiment, only two lanes (lines) are used in the transmission of the video conversion circuit 2, and the two lanes support the first DP version and the second DP version respectively, where the first DP version is DP1.4 version and the second DP version is DP1.2 version in this embodiment; the bandwidth of the line under the DP1.2 standard is 5.4Gbps, and the bandwidth of the line under the DP1.4 standard is 8.1Gbps.
A register (00100 h) is a specific register address or name, which is used to represent a certain parameter or set Value (hereinafter referred to as a register Value), where Main Link Bandwidth Setting =value×0.27Gbps corresponds to a main bandwidth=a Value x0.27gbps, and the following is a use example:
when the register Value of the video circuit chip is 14H, the result obtained by converting the Value into decimal is 20, the bandwidth result obtained by calculation is 5.4GGbps through the formula Main Link Bandwidth Setting =value 0.27Gbps, namely the terminal equipment is the DP1.2 version;
when the register Value of the video circuit chip is 1EH, the result obtained by converting the Value into decimal is 30, the bandwidth result obtained by calculation through the formula Main Link Bandwidth Setting =value 0.27Gbps is 8.1GGbps, namely the terminal equipment is the DP1.4 version.
It should be noted that DP is an abbreviation of DisplayPort, DP is a digital video interface standard, and DP interface is a digital signal interface, which is mainly used for connecting a terminal device to an output device such as a display, a projector, etc.; in this embodiment, the DP protocol chip establishes a connection with the video conversion chip through the I2C connection manner, so as to read information of the video circuit from the video conversion chip.
In particular, the prompting component may include a display circuit 4 for displaying the DP version of the terminal device information to the user and/or an audio circuit for broadcasting the DP version of the terminal device information to the user.
In this embodiment, the prompting component includes a display circuit 4, where the display circuit 4 includes a first indicator light and a second indicator light, and when the terminal device is judged to be in DP1.2 version, that is, the high-definition video requirement of 30 frames with 4K resolution is satisfied, the second indicator light is turned on; when the terminal equipment is judged to be in the DP1.4 version, namely the high-definition video requirement of 60 frames with 4K resolution or 30 frames with 8K resolution is met, the first indicator lamp is lighted; specifically, the DP protocol chip is connected with the first indicator lamp through the GPIO1 interface, and the DP protocol chip is connected with the second indicator lamp through the GPIO2 interface.
The general term GPIO is General Purpose Input/Output, which is a general purpose input/Output in chinese, and GPIO is a general purpose interface for processing digital signals, and is mainly applied to development of various electronic products and computer devices, where GPIO may be used to read digital signals such as external sensors or switches as input, or may send digital signals to the outside as functions such as a switch, a light, etc. of an Output control circuit or other devices.
Preferably, the first indicator light and the second indicator light may have different hues so as to be convenient for a user to distinguish, and in a specific embodiment, the first indicator light is in a green light state, and the second indicator light is in a red light state; in other embodiments, the first indicator light and the second indicator light may be preset to have a combination of two different colors.
Further, the DP protocol chip is provided with a corresponding program to make the DP protocol chip light a corresponding indicator lamp based on the value of the register of the video circuit chip, specifically:
the DP protocol chip reads the register value of the video circuit chip to be 14H, namely when the terminal equipment is judged to be the DP1.2 version, the GPIO1 outputs an invalid level, the GPIO2 outputs an effective level, so that the first indicator lamp connected with the DP protocol chip through the GPIO1 is not lighted, and the second indicator lamp connected with the DP protocol chip through the GPIO2 is lighted to be red;
the DP protocol chip reads that the register value of the video circuit chip is 1EH, namely when the terminal equipment is judged to be the DP1.4 version, the GPIO1 outputs an effective level, the GPIO2 outputs an ineffective level, so that the first indicator lamp connected with the DP protocol chip through the GPIO1 is lighted to be green, and the second indicator lamp connected with the DP protocol chip through the GPIO2 is not lighted.
In one embodiment, the active level of GPIO1 is 0 and the inactive level is 1; the active level of GPIO2 is 0 and the inactive level is 1, i.e.:
when the terminal equipment is judged to be in the DP1.2 version, setting the level of GPIO1 to be 1 and setting the level of GPIO2 to be 0; when the terminal device is judged to be in the DP1.4 version, the level of GPIO1 is set to 0, and the level of GPIO2 is set to 1.
In this embodiment, the interface 1 includes a Type-C port and a CC protocol chip, where the Type-C port is used to connect to an external terminal device, and the CC protocol chip is used to connect to a DP protocol chip, so as to transmit terminal device data acquired through the Type-C port to the DP protocol chip, to complete communication between the terminal device and the DP protocol chip, and simultaneously, can support the requirement that both the Type-C interface can be plugged in forward and backward, so that the circuit realizes intelligent and flexible video transmission adjustment and adaptation, and is convenient for users to use;
the interface 1 is also connected with the video conversion chip through a CC protocol chip, and the connection between the CC protocol chip and the video conversion chip is completed based on SSTX2 and SSRX2 channels.
It should be noted that SSTX2 and SSRX2 are overspeed signal paths designed for Type-C ports, and are used to construct a high-speed data transmission path to connect the Type-C ports and the video IC. SSTX2 and SSRX2 are commonly used in the DisplayPort over USB Type-C (DP-Alt Mode) protocol;
wherein SSTX2, collectively SuperSpeed Transmit Lane 2, the second overdrive channel on the Type-C port, is used to transmit local audio, image or video data from the host or source device to the target display device or television;
the second overspeed reception channel on the Type-C port, collectively SuperSpeed Receive Lane 2 of SSRX2, is used to receive local audio, image, video or other data from a display or television and transmit it back to the host or source device.
Preferably, the DP version judging circuit further comprises a HUB expansion circuit 5 connected to the interface 1, wherein the HUB expansion circuit 5 is configured to expand data of one interface of the terminal device into a plurality of groups of data signals, and send the data signals to a plurality of expansion ports (not shown in the figure) respectively, so that the simultaneous connection and data transmission of the plurality of devices are realized through the expansion ports;
in this embodiment, the HUB expansion circuit 5 includes a HUB chip, which is configured to expand data of one interface of the terminal device into multiple sets of data signals, so that a user can access more external devices without adding hardware devices, and make the terminal device establish a connection with the external devices.
Example 2
The present embodiment proposes a connection device for connecting a terminal device and a playback device, the connection device including the DP version judging circuit proposed in embodiment 1.
Specifically, the connection device is connected with the terminal device through the interface 1, is connected with the playing device through the video conversion circuit 2, is used for converting the video signal of the terminal device into a standard compatible with the playing device, so that the terminal device realizes video output through the playing device,
optionally, the connection device comprises a USB HUB (USB HUB) or Docking Station (Docking Station).
It should be noted that the USB hub is an external device, and the USB hub can extend a single USB port into multiple ports, which provides a convenient way to connect multiple USB devices (such as a printer, a mouse, a keyboard, a storage device, etc.) to one terminal device at the same time, so as to enhance the functionality of the terminal device;
the docking station refers to an external accessory capable of expanding the port of the terminal equipment, and comprises a large number of peripheral expansion interfaces such as USB ports, HDMI interfaces, network cable interfaces and the like, so that the terminal equipment can enrich the originally fixed terminal equipment interfaces to meet the requirement of simultaneously connecting a plurality of equipment.
In summary, the present utility model provides a DP version judging circuit and a connection device having the same, which are provided by the present utility model, so that the DP version of a terminal device is conveniently judged, the user is helped to understand and master the compatibility of various devices, the support and expansion of various terminal devices are realized, the application range is wide, and a richer and intelligent video transmission experience can be provided for the user, and meanwhile, the compatibility and the use convenience of the device are also improved.
The foregoing description of the preferred embodiments of the utility model is not intended to limit the utility model to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and scope of the utility model are intended to be included within the scope of the utility model.
Claims (10)
1. The DP version judging circuit is characterized by comprising an interface, a video conversion circuit, a DP protocol circuit and a prompting component, wherein the video conversion circuit is used for processing video signals transmitted by the terminal equipment through the interface, the DP protocol circuit is used for reading information of the video conversion circuit to judge the DP version of the terminal equipment, and the prompting component is used for prompting the DP version of the terminal equipment:
the interface is connected with the terminal equipment, the video conversion circuit is connected with the interface, and the DP protocol circuit is respectively connected with the video conversion circuit and the prompt component.
2. The DP version determination circuit according to claim 1, wherein said prompting component comprises:
the display circuit is connected with the DP protocol circuit;
and/or an audio circuit connected with the DP protocol circuit.
3. The DP version judging circuit according to claim 2, wherein the display circuit includes a first indicator lamp for lighting when the DP version of the terminal device is the first DP version and a second indicator lamp for lighting when the DP version of the terminal device is the second DP version.
4. The DP version judging circuit according to claim 3, wherein said first indicator light and said second indicator light have different hues.
5. The DP version judging circuit according to claim 1, wherein the video converting circuit includes a first transmission line supporting a video signal of a first DP version and a second transmission line supporting a video signal of a second DP version.
6. The DP version judging circuit according to claim 1 or 5, wherein the video converting circuit includes a video converting chip, and the DP protocol circuit includes a DP protocol chip for reading register information of the video converting chip.
7. The DP version judging circuit according to claim 1, wherein the interface includes a Type-C port for connecting the terminal device and a CC protocol chip for connecting the DP protocol circuit.
8. The DP version judging circuit according to claim 1 or 7, further comprising:
the HUB expansion circuit is connected with the interfaces and used for expanding data of one interface of the terminal equipment into a plurality of groups of data signals;
and a plurality of expansion ports, each of which is connected to the HUB expansion circuit to receive the data signal.
9. A connection device for connecting a terminal device and a playback device, comprising the DP version judging circuit according to any one of claims 1 to 8, said connection device being connected to said terminal device via said interface, said playback device being connected via said video converting circuit.
10. The connection device of claim 9, wherein the connection device comprises a USB hub or docking station.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321569455.6U CN220292070U (en) | 2023-06-19 | 2023-06-19 | DP version judging circuit and connection equipment with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321569455.6U CN220292070U (en) | 2023-06-19 | 2023-06-19 | DP version judging circuit and connection equipment with same |
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| Publication Number | Publication Date |
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| CN220292070U true CN220292070U (en) | 2024-01-02 |
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| CN202321569455.6U Active CN220292070U (en) | 2023-06-19 | 2023-06-19 | DP version judging circuit and connection equipment with same |
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- 2023-06-19 CN CN202321569455.6U patent/CN220292070U/en active Active
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