WO2019205257A1 - 一种三合一多媒体线和电子画板系统 - Google Patents

一种三合一多媒体线和电子画板系统 Download PDF

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Publication number
WO2019205257A1
WO2019205257A1 PCT/CN2018/091497 CN2018091497W WO2019205257A1 WO 2019205257 A1 WO2019205257 A1 WO 2019205257A1 CN 2018091497 W CN2018091497 W CN 2018091497W WO 2019205257 A1 WO2019205257 A1 WO 2019205257A1
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WO
WIPO (PCT)
Prior art keywords
pin
plug
differential
usb
type
Prior art date
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PCT/CN2018/091497
Other languages
English (en)
French (fr)
Inventor
李远志
Original Assignee
深圳市友基技术有限公司
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 深圳市友基技术有限公司 filed Critical 深圳市友基技术有限公司
Priority to EP18916054.2A priority Critical patent/EP3790127A4/en
Priority to JP2021504555A priority patent/JP7150971B2/ja
Priority to US17/048,246 priority patent/US11360922B2/en
Publication of WO2019205257A1 publication Critical patent/WO2019205257A1/zh

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Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
    • G06F13/38—Information transfer, e.g. on bus
    • G06F13/40—Bus structure
    • G06F13/4004—Coupling between buses
    • G06F13/4027—Coupling between buses using bus bridges
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R31/00—Coupling parts supported only by co-operation with counterpart
    • H01R31/06—Intermediate parts for linking two coupling parts, e.g. adapter
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R11/00—Individual connecting elements providing two or more spaced connecting locations for conductive members which are, or may be, thereby interconnected, e.g. end pieces for wires or cables supported by the wire or cable and having means for facilitating electrical connection to some other wire, terminal, or conductive member, blocks of binding posts
    • H01R11/11—End pieces or tapping pieces for wires, supported by the wire and for facilitating electrical connection to some other wire, terminal or conductive member
    • H01R11/32—End pieces with two or more terminations
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
    • G06F13/38—Information transfer, e.g. on bus
    • G06F13/382—Information transfer, e.g. on bus using universal interface adapter
    • G06F13/385—Information transfer, e.g. on bus using universal interface adapter for adaptation of a particular data processing system to different peripheral devices
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
    • G06F13/38—Information transfer, e.g. on bus
    • G06F13/42—Bus transfer protocol, e.g. handshake; Synchronisation
    • G06F13/4282—Bus transfer protocol, e.g. handshake; Synchronisation on a serial bus, e.g. I2C bus, SPI bus
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/046—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by electromagnetic means
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R12/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, specially adapted for printed circuits, e.g. printed circuit boards [PCB], flat or ribbon cables, or like generally planar structures, e.g. terminal strips, terminal blocks; Coupling devices specially adapted for printed circuits, flat or ribbon cables, or like generally planar structures; Terminals specially adapted for contact with, or insertion into, printed circuits, flat or ribbon cables, or like generally planar structures
    • H01R12/50—Fixed connections
    • H01R12/51—Fixed connections for rigid printed circuits or like structures
    • H01R12/53—Fixed connections for rigid printed circuits or like structures connecting to cables except for flat or ribbon cables
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/02—Contact members
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R24/00—Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure
    • H01R24/60—Contacts spaced along planar side wall transverse to longitudinal axis of engagement
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R27/00—Coupling parts adapted for co-operation with two or more dissimilar counterparts
    • H01R27/02—Coupling parts adapted for co-operation with two or more dissimilar counterparts for simultaneous co-operation with two or more dissimilar counterparts
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2213/00—Indexing scheme relating to interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
    • G06F2213/0042—Universal serial bus [USB]
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2213/00—Indexing scheme relating to interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
    • G06F2213/40—Bus coupling
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/14—Digital output to display device ; Cooperation and interconnection of the display device with other functional units
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2370/00—Aspects of data communication
    • G09G2370/12—Use of DVI or HDMI protocol in interfaces along the display data pipeline
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2370/00—Aspects of data communication
    • G09G2370/20—Details of the management of multiple sources of image data
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R2107/00—Four or more poles
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R2201/00—Connectors or connections adapted for particular applications
    • H01R2201/18—Connectors or connections adapted for particular applications for television

Definitions

  • the present invention relates to the field of data lines, and more particularly to a three-in-one multimedia line and electronic drawing board system.
  • the electronic drawing board generally includes a display with touch function.
  • the electronic drawing board needs to be connected to the computer during work.
  • the electronic drawing board needs to obtain image information from the computer, transmit touch data to the computer, and obtain sufficient working power from the computer or other power source.
  • products on the market generally use one HDMI or VGA cable, one power cable and one USB cable to meet the above three requirements.
  • an object of the present invention is to provide a three-in-one multimedia line and an electronic drawing board system which are convenient to use.
  • a three-in-one multimedia cable comprising a USB-type-C plug, an HDMI plug, a USB-type-A plug and a power plug, the USB-type-C plug including A1 to A12 pins and B1 to B12 pin, where The A2 pin and the A3 pin are the first differential pin group, and the B2 pin and the B3 pin are the second differential pin group.
  • A6 pin and A7 pin are the third differential pin group
  • B6 pin and B7 pin are the fourth differential pin group
  • A10 pin and A11 pin are the fifth differential pin group
  • the pin is a sixth differential pin group
  • the HDMI plug includes a seventh differential pin group, an eighth differential pin group, a ninth differential pin group, a tenth differential pin group, a hot plug detection pin, a serial data pin, a serial clock pin, and a 5V power input pin
  • the USB-type-A plug includes an eleventh differential pin set
  • the seventh differential pin set is coupled to the first differential pin set
  • the eighth differential pin set is coupled to the second differential pin set
  • the ninth differential pin set is coupled to the fifth differential pin set
  • the tenth differential pin group is connected to the ground six differential pin group
  • the eleventh differential pin group is respectively connected to the third differential pin group and the fourth differential pin group;
  • the USB-type- The power positive pin of the A plug and the positive power pin of the power plug are connected to at least one of the A4 pin, the B4 pin, the A9 pin, and the B9 pin of the USB-type-C plug, the USB-type
  • the grounding pin of the -A plug, the grounding pin of the power supply plug, and the grounding pin of the HDMI plug are connected to at least one of the A1 pin, the B1 pin, the A12 pin, and the B12 pin of the USB-type-C plug.
  • the 5V power input pin, hot plug detection pin, serial data pin, and serial clock pin are all connected to the A5 pin, B5 pin, A8 pin, and B8 of the USB-type-C plug. One of the pins is connected, and the 5V power input pin, the hot plug detection pin, the serial data pin, and the serial clock pin are not connected to each other.
  • the power supply plug is a USB-type-A type plug.
  • an adapter board is disposed in the HDMI plug, and the USB-type-C plug is respectively connected to the HDMI plug, the USB-type-A plug and the power plug through the adapter board.
  • the hot plug detection pin is connected to the A5 pin
  • the 5V power input pin is connected to the B5 pin.
  • serial data pin is connected to the A8 pin
  • serial clock pin is connected to the B8 pin
  • one of the seventh differential pin group, the eighth differential pin group, the ninth differential pin group, and the tenth differential pin group is a differential clock pin group.
  • the eleventh differential pin group includes a D+ pin and a D- pin of a USB-type-A plug, and the D+ pin is connected to the A6 pin and the B6 pin, and the D- pin is coupled with A7 and B7 pins are connected.
  • An electronic drawing board system comprising a USB-type-C socket, an analog switch, a electromagnetic screen module and a three-in-one multimedia line, the USB-type-C plug of the multimedia line being connected with a USB-type-C socket, the USB The output of the -type-C socket is connected to the input of the analog switch, and the output of the analog switch is connected to the input of the electromagnetic screen module.
  • the three-in-one multimedia cable of the present invention has the beneficial effects of including a USB-type-C plug, an HDMI plug, a USB-type-A plug and a power plug, and the three-in-one multimedia cable transmits video data and data control.
  • the three functions of the transmission and power supply are integrated into one USB-type-C plug, so that users do not need to use a variety of wires when using the electronic drawing board, which is convenient for users.
  • the electronic drawing board system of the invention has the beneficial effects that the three-in-one multimedia line is included, so that the user does not need to use a plurality of wires when using the electronic drawing board, and is convenient for the user to use.
  • the electronic drawing board system also adds an analog switch, which can be based on the three-in-one
  • the insertion direction of the USB-type-C plug of a multimedia cable automatically switches the connection relationship between the USB-type-C socket and the electromagnetic screen module, which makes the user more convenient to use.
  • FIG. 1 is a structural view showing the appearance of a three-in-one multimedia cable according to the present invention
  • Figure 2 is a standard pin definition diagram of USB-type-C
  • FIG. 3 is a block diagram of a module of an electronic drawing board system of the present invention.
  • FIG. 4 is a schematic diagram of an analog switch of the present invention.
  • a three-in-one multimedia cable includes a USB-type-C plug, an HDMI plug, a USB-type-A plug and a power plug, and the USB-type-C plug includes A1 to A12. Foot and B1 to B12 pins, of which The A2 pin and the A3 pin are the first differential pin group, and the B2 pin and the B3 pin are the second differential pin group.
  • A6 pin and A7 pin are the third differential pin group
  • B6 pin and B7 pin are the fourth differential pin group
  • A10 pin and A11 pin are the fifth differential pin group
  • the pin is a sixth differential pin group
  • the HDMI plug includes a seventh differential pin group, an eighth differential pin group, a ninth differential pin group, a tenth differential pin group, a hot plug detection pin, a serial data pin, a serial clock pin, and a 5V power input pin
  • the USB-type-A plug includes an eleventh differential pin set
  • the seventh differential pin set is coupled to the first differential pin set
  • the eighth differential pin set is coupled to the second differential pin set
  • the ninth differential pin set is coupled to the fifth differential pin set
  • the tenth differential pin group is connected to the ground six differential pin group
  • the eleventh differential pin group is respectively connected to the third differential pin group and the fourth differential pin group;
  • the USB-type- The power positive pin of the A plug and the positive power pin of the power plug are connected to at least one of the A4 pin, the B4 pin, the A9 pin, and the B9 pin of the USB-type-C plug, the USB-type
  • the grounding pin of the -A plug, the grounding pin of the power supply plug, and the grounding pin of the HDMI plug are connected to at least one of the A1 pin, the B1 pin, the A12 pin, and the B12 pin of the USB-type-C plug.
  • the 5V power input pin, hot plug detection pin, serial data pin, and serial clock pin are all connected to the A5 pin, B5 pin, A8 pin, and B8 of the USB-type-C plug.
  • One of the pins is connected, and the 5V power input pin, the hot plug detection pin, the serial data pin, and the serial clock pin are not connected to each other.
  • the A4 pin, B4 pin, A9 pin and B9 pin are connected to the positive polarity pin of the USB-type-A plug and the positive power supply of the power supply plug.
  • A1 pin, B1 pin, A12 pin and B12 pin are connected to the ground pin of the USB-type-A plug, the ground pin of the power plug, and the ground pin of the HDMI plug.
  • those skilled in the art can connect only a part of the pins according to actual needs.
  • the power supply plug is a USB-type-A type plug.
  • an adapter board is disposed in the HDMI plug, and the USB-type-C plug is respectively connected to the HDMI plug, the USB-type-A plug, and the power plug through the adapter board.
  • the hot plug detection pin is connected to the A5 pin, and the 5V power input pin is connected to the B5 pin.
  • serial data pin is connected to the A8 pin
  • serial clock pin is connected to the B8 pin
  • one of the seventh differential pin group, the eighth differential pin group, the ninth differential pin group, and the tenth differential pin group is a differential clock pin group.
  • the eleventh differential pin group includes a D+ pin and a D- pin of a USB-type-A plug, and the D+ pin is connected to the A6 pin and the B6 pin, The D- pin is connected to the A7 and B7 pins.
  • an electronic drawing board system includes a USB-type-C socket, an analog switch, a electromagnetic screen module and a three-in-one multimedia cable, and the USB-type-C plug of the multimedia cable is connected with a USB-type-C socket.
  • the output end of the USB-type-C socket is connected to the input end of the analog switch, and the output end of the analog switch is connected to the input end of the electromagnetic screen module.
  • the present embodiment discloses a three-multimedia cable including a USB-type-C plug 100, an HDMI plug 200, a USB-type-A plug 300, and a power plug 400.
  • An adapter board is disposed in the HDMI plug 200, and the USB-type-C plug 100 is connected to the HDMI plug 200, the USB-type-A plug 300, and the power plug 400 through an adapter board in the HDMI plug 200, respectively.
  • the connection between the other plug and the adapter board is connected by wires (the HDMI plug can be directly soldered to the adapter board).
  • the adapter board is placed in the HDMI plug 200 because the HDMI plug is bulky and can accommodate the PCB board.
  • the purpose of the power supply plug 400 of the present invention is to provide a sufficient current for the electronic drawing board (generally the computer USB interface power supply does not exceed 500 mA, which is insufficient to drive the electronic drawing board), and the power supply plug 400 can be implemented by a USB-type-A type plug. In order to directly plug in the computer's USB, charging treasure or charging socket to obtain current.
  • connection relationship between the plurality of plugs in this embodiment is as shown in Table 1:
  • the header “pin” refers to the pin on the USB-type-C plug
  • the header “definition” refers to the HDMI plug and USB-type connected to the pin on the USB-type-C plug.
  • -A plug or pin on the power plug the item prefixed with “USB” in Table 1 indicates the pin of the USB-type-A plug
  • the item prefixed with "HDMI” indicates the pin of the HDMI plug.
  • 5V IN indicates the positive pin of the power supply of each plug except the HDMI plug.
  • A2 and A3, B2 and B3, A6 and A7, B6 and B7, A10 and A11, and B10 and B11 are differential data pin groups. Referring to Table 1 and FIG.
  • USB-type-A plug of the present invention does not change the standard pin definition of the USB-type-C, so the present invention can also be regarded as ordinary.
  • the USB data cable is used.
  • the present invention also utilizes the remaining differential data pins of the USB-type-C and other pins to implement the integration of the HDMI interface.
  • an analog switch can be provided using the electronic drawing board of the data line of the embodiment, and the switch is used for Detect the 5V power input of the HDMI interface, and determine the connection relationship inside the electronic drawing board according to the position of the 5V power input pin of the HDMI plug. For example, the 5V power input pin is connected to the B5 pin.
  • the analog switch only needs to detect the A5 pin and the B5 pin of the USB-type-C plug. Which is the 5V level to know the insertion direction of the USB-type-C plug? At this time, the analog switch switches the connection relationship between the USB-type-C plug and the electronic drawing board display according to the detection result.
  • connection relationship between the HDMI plug and the USB-type-C plug can be adjusted according to actual needs. For example, swap HDMI-SCL and HDMI-SDA, or swap the positions of multiple differential pins.
  • the embodiment provides an electronic drawing board system, which includes a three-in-one multimedia line, a USB-type-C socket, an analog switch, and a electromagnetic screen module as described in FIG.
  • the type-C plug is connected to the USB-type-C socket, and the output end of the USB-type-C socket is connected to the input end of the analog switch, and the output end of the analog switch is connected to the input end of the electromagnetic screen module.
  • FIG. 4 shows a schematic diagram of a type of ratio switch.
  • the switch S1 and the switch S2 are controlled by the input level of the interface D.
  • the interface D of FIG. 4 is connected to the HDMI-5V
  • the states of the switch S1 and the switch S2 are as shown in FIG. 4, and the USB-type-C plug (socket)
  • the A10 pin is connected to the A10' pin of the electro-optical board's electromagnetic module
  • the B10 pin is connected to the B10' pin. If the USB-type-C plug is inserted in the reverse direction and the interface D does not detect the high level of the HDMI-5V (or when the other detection interface detects the high level of the HDMI-5V), the states of the switches S1 and S2 will change.
  • the A10 pin is connected to the B10' pin
  • the B10 pin is connected to the A10' pin.
  • the connection relationship between the multimedia line and the electromagnetic screen module is automatically switched by detecting the position of the HDMI-5V, so that the USB-type-C interface can be inserted and used without any positive or negative, which is further convenient for the user to use. Since the function of the pin is determined after the design of the wire is completed, in the actual application, the person skilled in the art only needs to redesign the connection relationship between the analog switch and the USB-type-C socket according to the actual situation, and the present invention does not Limit the specific connection between the analog switch and the USB-type-C socket and between the analog switch and the electromagnetic screen module, and do not limit the specific model and quantity of the analog switch.

Abstract

一种三合一多媒体线和电子画板系统，该三合一多媒体线包括一个USB-type-C插头（100）、一个HDMI插头（200）、一个USB-type-A插头（300）和一个供电插头（400），所述USB-type-C插头（100）分别与HDMI插头（200）、USB-type-A插头（300）和供电插头（400）连接；该电子画板系统包括三合一多媒体线、USB-type-C插座、类比开关和电磁屏模块，所述多媒体线的USB-type-C插头（100）与USB-type-C插座连接，所述USB-type-C插座的输出端与类比开关的输入端连接，所述类比开关的输出端与电磁屏模块的输入端连接。所述三合一多媒体线可以减少线材的数量，方便用户使用，可以广泛应用于数据线领域。

Description

一种三合一多媒体线和电子画板系统
技术领域
本发明涉及数据线领域，尤其是一种三合一多媒体线和电子画板系统。
背景技术
对于艺术工作者来说，电子画板已经成了为他们必要的工作设备。而电子画板一般包括一个具有触控功能的显示屏。电子画板在工作时需要与电脑连接，电子画板在工作时需要从电脑处获取图像信息、向电脑传输触控数据以及从电脑或者其他电源处获取足够的工作电源。而目前市面上产品一般使用一条HDMI或者VGA线、一条电源线和一条USB线来分别满足上述三个需求。
然而，对于电子画板这样的移动工具，使用多条连接线并不方便。
发明内容
为解决上述技术问题，本发明的目的在于：提供一种使用方便的三合一多媒体线和电子画板系统。
本发明所采取的第一种技术方案是：
一种三合一多媒体线，包括一个USB-type-C插头、一个HDMI插头、一个USB-type-A插头和一个供电插头，所述USB-type-C插头包括A1至A12引脚以及B1至B12引脚，其中， A2引脚和A3引脚为第一差分引脚组， B2引脚和B3引脚为第二差分引脚组， A6引脚和A7引脚为第三差分引脚组，B6引脚和B7引脚为第四差分引脚组，A10引脚和A11引脚为第五差分引脚组，B10引脚和B11引脚为第六差分引脚组；所述HDMI插头包括第七差分引脚组、第八差分引脚组、第九差分引脚组、第十差分引脚组、热插拔检测引脚、串行数据引脚、串行时钟引脚和5V电源输入引脚；所述USB-type-A插头包括第十一差分引脚组；
所述第七差分引脚组与第一差分引脚组连接，所述第八差分引脚组与第二差分引脚组连接，所述第九差分引脚组与第五差分引脚组连接，所述第十差分引脚组与地六差分引脚组连接，所述第十一差分引脚组分别与第三差分引脚组和第四差分引脚组连接；所述USB-type-A插头的电源正极引脚和供电插头的电源正极引脚均与USB-type-C插头的A4引脚、B4引脚、A9引脚和B9引脚中的至少一个连接，所述USB-type-A插头的接地引脚、供电插头的接地引脚和HDMI插头的接地引脚均与USB-type-C插头的A1引脚、B1引脚、A12引脚和B12引脚中的至少一个连接，所述5V电源输入引脚、热插拔检测引脚、串行数据引脚和串行时钟引脚均与USB-type-C插头的A5引脚、B5引脚、A8引脚和B8引脚的其中一个连接，并且所述5V电源输入引脚、热插拔检测引脚、串行数据引脚和串行时钟引脚两两之间互不连接。
进一步，所述供电插头为USB-type-A型的插头。
进一步，所述HDMI插头中设有转接板，所述USB-type-C插头通过所述转接板分别与HDMI插头、USB-type-A插头和供电插头连接。
进一步，所述热插拔检测引脚与A5引脚连接，所述5V电源输入引脚与B5引脚连接。
进一步，所述串行数据引脚与A8引脚连接，所述串行时钟引脚与B8引脚连接。
进一步，所述第七差分引脚组、第八差分引脚组、第九差分引脚组和第十差分引脚组的其中一组为差分时钟引脚组。
进一步，所述第十一差分引脚组包括USB-type-A插头的D+引脚和D-引脚，所述D+引脚与A6引脚和B6引脚连接，所述D-引脚与A7和B7引脚连接。
本发明所采取的第二种技术方案是：
一种电子画板系统，包括USB-type-C插座、类比开关、电磁屏模块和三合一多媒体线，所述多媒体线的USB-type-C插头与USB-type-C插座连接，所述USB-type-C插座的输出端与类比开关的输入端连接，所述类比开关的输出端与电磁屏模块的输入端连接。
本发明的三合一多媒体线有益效果是：包括一个USB-type-C插头、一个HDMI插头、一个USB-type-A插头和一个供电插头，本三合一多媒体线将视频数据传输、数据控制传输和供电三个功能的连接线集成到一个USB-type-C插头中，使得用户在使用电子画板时无需使用多种线材，便于用户使用。
本发明的电子画板系统的有益效果是：包括三合一多媒体线，使得用户在使用电子画板时无需使用多种线材，便于用户使用，此外本电子画板系统还增设了类比开关，能够根据三合一多媒体线的USB-type-C插头的插入方向自动切换USB-type-C插座与电磁屏模块之间的连接关系，使得用户使用起来更加方便。
附图说明
图1为本发明一种三合一多媒体线的外观结构图；
图2为USB-type-C的标准引脚定义图；
图3为本发明一种电子画板系统的模块框图；
图4为本发明一种类比开关的原理图。
具体实施方式
参照图1，一种三合一多媒体线，包括一个USB-type-C插头、一个HDMI插头、一个USB-type-A插头和一个供电插头，所述USB-type-C插头包括A1至A12引脚以及B1至B12引脚，其中， A2引脚和A3引脚为第一差分引脚组， B2引脚和B3引脚为第二差分引脚组， A6引脚和A7引脚为第三差分引脚组，B6引脚和B7引脚为第四差分引脚组，A10引脚和A11引脚为第五差分引脚组，B10引脚和B11引脚为第六差分引脚组；所述HDMI插头包括第七差分引脚组、第八差分引脚组、第九差分引脚组、第十差分引脚组、热插拔检测引脚、串行数据引脚、串行时钟引脚和5V电源输入引脚；所述USB-type-A插头包括第十一差分引脚组；
所述第七差分引脚组与第一差分引脚组连接，所述第八差分引脚组与第二差分引脚组连接，所述第九差分引脚组与第五差分引脚组连接，所述第十差分引脚组与地六差分引脚组连接，所述第十一差分引脚组分别与第三差分引脚组和第四差分引脚组连接；所述USB-type-A插头的电源正极引脚和供电插头的电源正极引脚均与USB-type-C插头的A4引脚、B4引脚、A9引脚和B9引脚中的至少一个连接，所述USB-type-A插头的接地引脚、供电插头的接地引脚和HDMI插头的接地引脚均与USB-type-C插头的A1引脚、B1引脚、A12引脚和B12引脚中的至少一个连接，所述5V电源输入引脚、热插拔检测引脚、串行数据引脚和串行时钟引脚均与USB-type-C插头的A5引脚、B5引脚、A8引脚和B8引脚的其中一个连接，并且所述5V电源输入引脚、热插拔检测引脚、串行数据引脚和串行时钟引脚两两之间互不连接。一般情况下，为了保证多媒体线的供电能力和抗干扰能力，A4引脚、B4引脚、A9引脚和B9引脚均与USB-type-A插头的电源正极引脚和供电插头的电源正极引脚连接，同理，A1引脚、B1引脚、A12引脚和B12引脚均与USB-type-A插头的接地引脚、供电插头的接地引脚和HDMI插头的接地引脚连接。但本领域技术人员可以根据实际需要只连接部分引脚。
参照图1，进一步作为优选的实施方式，所述供电插头为USB-type-A型的插头。
进一步作为优选的实施方式，所述HDMI插头中设有转接板，所述USB-type-C插头通过所述转接板分别与HDMI插头、USB-type-A插头和供电插头连接。
进一步作为优选的实施方式，所述热插拔检测引脚与A5引脚连接，所述5V电源输入引脚与B5引脚连接。
进一步作为优选的实施方式，所述串行数据引脚与A8引脚连接，所述串行时钟引脚与B8引脚连接。
进一步作为优选的实施方式，所述第七差分引脚组、第八差分引脚组、第九差分引脚组和第十差分引脚组的其中一组为差分时钟引脚组。
进一步作为优选的实施方式，所述第十一差分引脚组包括USB-type-A插头的D+引脚和D-引脚，所述D+引脚与A6引脚和B6引脚连接，所述D-引脚与A7和B7引脚连接。
参照图3，一种电子画板系统，包括USB-type-C插座、类比开关、电磁屏模块和三合一多媒体线，所述多媒体线的USB-type-C插头与USB-type-C插座连接，所述USB-type-C插座的输出端与类比开关的输入端连接，所述类比开关的输出端与电磁屏模块的输入端连接。
下面结合说明书附图和具体的实施例对本发明进行进一步的说明。
参照图1，本实施例公开了一种三个一多媒体线，该多媒体线包括一个USB-type-C插头100、一个HDMI插头200、一个USB-type-A插头300和一个供电插头400。所述HDMI插头200内设有转接板，所述USB-type-C插头100通过HDMI插头200内的转接板分别与HDMI插头200、USB-type-A插头300和供电插头400连接。其中，除了HDMI插头以外，其他插头与转接板之间的连接是通过线材连接的（HDMI插头可以直接焊接在转接板上）。将转接板设置在HDMI插头200中是因为HDMI插头的体积较大，可以容纳PCB板。
本发明增设供电插头400的目的在于为电子画板提供足够大的电流（一般电脑USB接口供电不超过500mA，不足以驱动电子画板），所述供电插头400可以采用USB-type-A型的插头实现，以便于直接插在电脑的USB、充电宝或者充电插座上获取电流。
本实施例中多个插头之间的连接关系如表1所示：
表1
引脚 定义 引脚 定义
A1 GND B1 GND
A2 HDMI-D0+（数据差分引脚的正相） B2 HDMI-CLK+（时钟差分引脚的正相）
A3 HDMI-D0-（数据差分引脚的负相） B3 HDMI-CLK+（时钟差分引脚的正相）
A4 5V IN B4 5V IN
A5 HDMI-HPD（热插拔检测引脚） B5 HDMI-5V（5V电源输入引脚）
A6 USB-D+（数据差分引脚的正相） B6 USB-D+（数据差分引脚的正相）
A7 USB-D-（数据差分引脚的负相） B7 USB-D-（数据差分引脚的负相）
A8 HDMI-SCL（串行时钟引脚） B8 HDMI-SDA（串行数据引脚）
A9 5V IN B9 5V IN
A10 HDMI-D2-（差分引脚的负相） B10 HDMI-D1-（差分引脚的负相）
A10 HDMI-D2+（差分引脚的正相） B11 HDMI-D1+（差分引脚的正相）
A12 GND B12 GND
其中，表头项“引脚”是指USB-type-C插头上的引脚，表头项“定义”是指USB-type-C插头上的引脚所对应连接的HDMI插头、USB-type-A插头或者供电插头上的引脚。其中，表1中前缀为“USB”的项表示USB-type-A插头的引脚，前缀为“HDMI”的项表示HDMI插头的引脚。各个插头之间共地，5V IN表示除HDMI插头外的各插头的电源正极引脚。其中，A2和A3、B2和B3、A6和A7、B6和B7、A10和A11以及B10和B11为差分数据引脚组。参照表1和图2，可以知道，本发明的USB-type-A插头与USB-type-C插头的连接关系并没有改变USB-type-C的标准引脚定义，因此本发明还能当普通的USB数据线来用。此外，本发明还利用了USB-type-C剩余的差分数据引脚和其他引脚来实现HDMI接口的集成。由于USB-type-C插头是不分正反面的，而本实施例的HDMI的引脚并非对称地分布，因此使用本实施例的数据线的电子画板，可以设置一个类比开关，该开关用于检测HDMI接口的5V电源输入，并根据HDMI插头的5V电源输入引脚的位置确定切换电子画板内部的连接关系。例如，5V电源输入引脚与B5引脚连接，类比开关只需要检测USB-type-C插头的A5引脚和B5引脚哪个是5V的电平即可知道USB-type-C插头的插入方向，此时，类比开关根据检测结果切换USB-type-C插头与电子画板显示屏之间连接关系。
此外，在另一些实施例中，可以根据实际需要调整HDMI插头与USB-type-C插头之间的连接关系。例如将HDMI-SCL和HDMI-SDA互换，或者将多个差分引脚的位置互换。
参照图3，本实施例提供一种电子画板系统，该系统包括如图1所述的三合一多媒体线、USB-type-C插座、类比开关和电磁屏模块，所述多媒体线的USB-type-C插头与USB-type-C插座连接，所述USB-type-C插座的输出端与类比开关的输入端连接，所述类比开关的输出端与电磁屏模块的输入端连接。
图4示出了一种类比开关的原理图。其中，开关S1和开关S2受控于接口D的输入电平，当图4中接口D连接HDMI-5V时，开关S1和开关S2的状态如图4所示，USB-type-C插头（插座）的A10引脚连接到电子画板的电磁屏模块的A10’引脚，B10引脚连接到B10’引脚。如果USB-type-C插头反向插入，接口D检测不到HDMI-5V的高电平时（或者其他检测接口检测到HDMI-5V的高电平时），则开关S1和开关S2的状态会发生改变，即A10引脚连接到B10’引脚，B10引脚连接到A10’引脚。本实施例通过检测HDMI-5V的位置来自动切换多媒体线和电磁屏模块之间的连接关系，使得USB-type-C接口可以不分正反地插入使用，进一步方便用户使用。由于线材完成设计后，其引脚的功能是确定的，因此在实际应用中，本领域技术人员只需要根据实际情况重新设计类比开关与USB-type-C插座的连接关系即可，本发明不限制类比开关与USB-type-C插座之间以及类比开关与电磁屏模块之间的具体连接关系，也不限制类比开关的具体型号和数量。
以上是对本发明的较佳实施进行了具体说明，但本发明并不限于所述实施例，熟悉本领域的技术人员在不违背本发明精神的前提下还可做作出种种的等同变形或替换，这些等同的变形或替换均包含在本申请权利要求所限定的范围内。

Claims (8)

  1. 一种三合一多媒体线，其特征在于：包括一个USB-type-C插头、一个HDMI插头、一个USB-type-A插头和一个供电插头，所述USB-type-C插头包括A1至A12引脚以及B1至B12引脚，其中， A2引脚和A3引脚为第一差分引脚组， B2引脚和B3引脚为第二差分引脚组， A6引脚和A7引脚为第三差分引脚组，B6引脚和B7引脚为第四差分引脚组，A10引脚和A11引脚为第五差分引脚组，B10引脚和B11引脚为第六差分引脚组；所述HDMI插头包括第七差分引脚组、第八差分引脚组、第九差分引脚组、第十差分引脚组、热插拔检测引脚、串行数据引脚、串行时钟引脚和5V电源输入引脚；所述USB-type-A插头包括第十一差分引脚组；
    所述第七差分引脚组与第一差分引脚组连接，所述第八差分引脚组与第二差分引脚组连接，所述第九差分引脚组与第五差分引脚组连接，所述第十差分引脚组与地六差分引脚组连接，所述第十一差分引脚组分别与第三差分引脚组和第四差分引脚组连接；所述USB-type-A插头的电源正极引脚和供电插头的电源正极引脚均与USB-type-C插头的A4引脚、B4引脚、A9引脚和B9引脚中的至少一个连接，所述USB-type-A插头的接地引脚、供电插头的接地引脚和HDMI插头的接地引脚均与USB-type-C插头的A1引脚、B1引脚、A12引脚和B12引脚中的至少一个连接，所述5V电源输入引脚、热插拔检测引脚、串行数据引脚和串行时钟引脚均与USB-type-C插头的A5引脚、B5引脚、A8引脚和B8引脚的其中一个连接。
  2. 根据权利要求1所述的一种三合一多媒体线，其特征在于：所述供电插头为USB-type-A型的插头。
  3. 根据权利要求1所述的一种三合一多媒体线，其特征在于：所述HDMI插头中设有转接板，所述USB-type-C插头通过所述转接板分别与HDMI插头、USB-type-A插头和供电插头连接。
  4. 根据权利要求1所述的一种三合一多媒体线，其特征在于：所述热插拔检测引脚与A5引脚连接，所述5V电源输入引脚与B5引脚连接。
  5. 根据权利要求1所述的一种三合一多媒体线，其特征在于：所述串行数据引脚与A8引脚连接，所述串行时钟引脚与B8引脚连接。
  6. 根据权利要求1所述的一种三合一多媒体线，其特征在于：所述第七差分引脚组、第八差分引脚组、第九差分引脚组和第十差分引脚组的其中一组为差分时钟引脚组。
  7. 根据权利要求1所述的一种三合一多媒体线，其特征在于：所述第十一差分引脚组包括USB-type-A插头的D+引脚和D-引脚，所述D+引脚与A6引脚和B6引脚连接，所述D-引脚与A7和B7引脚连接。
  8. 一种电子画板系统，其特征在于：包括USB-type-C插座、类比开关、电磁屏模块和如权利要求1所述的三合一多媒体线，所述多媒体线的USB-type-C插头与USB-type-C插座连接，所述USB-type-C插座的输出端与类比开关的输入端连接，所述类比开关的输出端与电磁屏模块的输入端连接，所述类比开关用于检测USB-type-C插头中与5V电源输入引脚连接的引脚的位置，并根据检测的结果切换USB-type-C插座与电磁屏模块之间的连接关系。
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