Multimedia line and hand drawing device

Abstract

The utility model relates to the field of data cables, in particular to a multimedia cable and hand drawing equipment. The multimedia line comprises a first Type-C plug, a second Type-C plug, an HDMI plug and a USB plug, the first Type-C plug and the second Type-C plug are connected through a channel configuration differential pin pair and support a power transmission protocol, the first Type-C plug is connected with the HDMI plug, and the first Type-C plug is connected with the USB plug. The multimedia line supports self-adaptive power supply and is wide in power supply range.

Description

Technical Field

[0001] This utility model relates to the field of data cables, and more particularly to a multimedia cable and a hand-drawing device. Background Art

[0002] The host computer connects to an external device with a display screen via a multimedia cable. This external device requires power and needs to communicate with the host computer. Existing multimedia cables use Type-A plugs or DC interfaces as power supplies, providing 5V or 12V voltage to the external device depending on the adapter. Therefore, the current multimedia cables have limited power supply voltage and capacity. Utility Model Content

[0003] In order to solve the technical problems of limited power supply voltage and limited power supply capacity of existing multimedia cables, this utility model provides an adaptive power supply multimedia cable and hand-drawing device.

[0004] A multimedia cable includes a first Type-C plug, a second Type-C plug, an HDMI plug, and a USB plug. The first Type-C plug and the second Type-C plug are connected via a channel-configured differential pin pair, supporting a power delivery protocol. The first Type-C plug is connected to the HDMI plug, and the first Type-C plug is connected to the USB plug.

[0005] In some embodiments, the first Type-C plug and the second Type-C plug are connected via a power pin, a ground pin, and a power delivery protocol pin pair; the first Type-C plug and the HDMI plug are connected via a data pin and a clock pin; and the first Type-C plug and the USB plug are connected via a USB differential data pin pair.

[0006] In some embodiments, the data pins include serial data pins and HDMI data differential pin pairs, and the clock pins include serial clock pins and clock differential pin pairs.

[0007] In some embodiments, the number of HDMI data differential pin pairs is three.

[0008] In some embodiments, the first Type-C plug includes pins A1 to A12 and pins B1 to B12, pins A5 and B5 are differential pin pairs, pins A6 and A7 are differential pin pairs, pins B6 and B7 are differential pin pairs, pins A8 and B8 are differential pin pairs, any one of the four differential pin pairs can be defined as the channel configuration differential pin pair, any one of the four differential pin pairs other than the channel configuration differential pin pair can be defined as the USB differential data pin pair, and any one of the four differential pin pairs other than the channel configuration differential pin pair and the USB differential data pin pair can be defined as the serial data pin and the serial clock pin.

[0009] In some embodiments, pins A1, B1, and B12 are defined as the ground pins, all connected to pin C6 of the second Type-C connector; pins A4, A9, B4, and B9 are defined as the power pins, all connected to pin C1 of the second Type-C connector; and pins C4 and C5 of the second Type-C connector are the power delivery protocol pin pair, connected to the channel configuration differential pin pair.

[0010] In some embodiments, pins A2 and A3 are defined as the HDMI data differential pins and are connected to pins D1 and D3 of the HDMI plug, respectively; pins A10 and A11 are defined as the HDMI data differential pins and are connected to pins D1 and D3 of the HDMI plug, respectively; pins B2 and B3 are defined as the clock differential pin pair and are connected to pins D10 and D12 of the HDMI plug, respectively; pins B10 and B11 are defined as the HDMI data differential pins and are connected to pins D7 and D9 of the HDMI plug, respectively; pin D15 of the HDMI plug is connected to the serial clock pin; and pin D16 of the HDMI plug is connected to the serial data pin.

[0011] In some embodiments, pin A12 is defined as a hot-plug detection pin and is connected to pin D19 of the HDMI plug.

[0012] In some embodiments, the USB plug is a Type-A plug, and the E2 and E3 pins of the USB plug are connected to the USB differential data pin pair.

[0013] A drawing device includes a drawing screen and a multimedia cable. The multimedia cable includes a first Type-C plug, a second Type-C plug, an HDMI plug, and a USB plug. The first Type-C plug and the second Type-C plug are connected via differential pin pairs configured through a channel, supporting a power delivery protocol. The first Type-C plug is connected to the HDMI plug and the first Type-C plug is connected to the USB plug. The drawing screen includes a Type-C port that matches the first Type-C plug.

[0014] Compared to existing technologies, the second Type-C plug of the multimedia cable provided by this utility model is used to connect to a power adapter. Through channel configuration of differential pin pairs, based on the power transmission protocol, the drawing screen can send a request to the power adapter to provide the corresponding voltage and current. After receiving the request, the power adapter will adjust the output voltage and current according to the needs of the device, realizing adaptive power supply and a wide power supply range. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort, wherein:

[0016] Figure 1 A schematic diagram of a hand-drawing device provided for an embodiment of this utility model;

[0017] Figure 2 for Figure 1 A schematic diagram of the multimedia lines shown;

[0018] Figure 3A , 3B 3C are respectively Figure 2 The diagram shows three different perspectives of the first Type-C plug;

[0019] Figure 4 for Figure 2 A schematic diagram of the head of the second Type-C plug is shown;

[0020] Figure 5A , 5B They are respectively Figure 2 The diagram shows two different angles from which the second HDMI plug is shown;

[0021] Figure 6 for Figure 2 A schematic diagram of the head of the USB plug is shown. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of this utility model will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0023] In this invention, "at least one" means one or more, and "more than one" means two or more. The terms "first" and "second" are used only to describe the purpose and to distinguish the purposes, such as substances, from one another, and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated.

[0024] Please see Figure 1 This is a schematic diagram of a hand-drawing device provided in an embodiment of the present utility model. The hand-drawing device 100 includes a hand-drawing screen 10 and a multimedia cable 20. The hand-drawing screen 10 is connected to a host computer via the multimedia cable 20. The host computer can be a desktop computer, a laptop computer, or a tablet computer, etc.

[0025] Please see Figure 2-6 ,in, Figure 2 for Figure 1 A schematic diagram of the multimedia lines shown. Figures 3A-3C They are respectively Figure 2 The diagram shows three different perspectives of the first Type-C plug. Figure 4 for Figure 2 The diagram shown is of the head of the second Type-C plug. Figure 5A , 5B They are respectively Figure 2 The diagram shows two different angles from which the second HDMI plug is shown. Figure 6 for Figure 2 The diagram shows the head of the USB plug. The multimedia cable 20 includes a first Type-C plug 21, a second Type-C plug 24, an HDMI plug 26, and a USB plug 28. The drawing screen 10 is equipped with a Type-C port that matches the first Type-C plug 21, and the Type-C port is connected to the first Type-C plug 21. The second Type-C plug 24 is used to connect a power adapter to power the drawing screen 10. The HDMI plug 26 is used to connect to the host computer to realize image information transmission between the host computer and the drawing screen 10. The USB plug 28 is used to connect to the host computer to realize handwriting information transmission between the host computer and the drawing screen 10.

[0026] It is understood that the power adapter connected to the second Type-C plug 24 can be a separate power adapter or a power supply interface set by the host computer.

[0027] The first Type-C plug 21 has a Configuration Channel (CC) differential pin pair CC1 and CC2 connected, and the second Type-C plug 24 has a Power Delivery Protocol (PD) pin pair. The Configuration Channel (CC) differential pin pair is connected to the PD pin pair, supporting the PD protocol. The first Type-C plug 21 is connected to the HDMI plug 26 via data pins and clock pins, and the first Type-C plug 21 is connected to the USB plug 28 via a USB differential data pin pair.

[0028] The first Type-C plug 21 and the second Type-C plug 24 are also connected via a power pin and a ground pin. The data pins include a serial data line (SDA) pin and an HDMI data differential pin pair, and the clock pins include a serial clock line (SCL) pin and a clock differential pin pair. The number of pairs of HDMI data differential pins is three.

[0029] In some embodiments, the multimedia line can provide a voltage from 5V to 20V and a maximum current of 5A.

[0030] In this embodiment, the first Type-C plug 21 is a 24-pin plug, including pins A1 to A12 and pins B1 to B12. The second Type-C plug 24 is a 6-pin plug, including pins C1 to C6. The HDMI plug 26 is a 19-pin plug, including pins D1 to D19. The USB plug 28 is a 4-pin plug, specifically a 4-pin Type-A plug, including pins E1 to E4.

[0031] Among them, pins A5 and B5 are differential pin pairs, pins A6 and A7 are differential pin pairs, pins B6 and B7 are differential pin pairs, pins A8 and B8 are differential pin pairs, any one of the four differential pin pairs can be defined as CC1 and CC2 pins, any one of the four differential pin pairs other than CC1 and CC2 pins can be defined as the USB differential data pin pair, and any one of the four differential pin pairs other than CC1, CC2 pins and the USB differential data pin pair can be defined as SDA and SCL pins.

[0032] Please refer to Table 1 below, which shows the pin function definitions and connection methods of the multimedia cable 10.

[0033] Table 1

[0034]

[0035]

[0036] Specifically, pins A5 and B5 are defined as CC1 and CC2 pins, respectively, and connected to pins C4 and C5. Pins C4 and C5 are the power delivery protocol pin pair, transmitting power supply signals. Pins A6 and A7 are defined as USB differential data pins, respectively, and connected to pins E3 and E2, transmitting USB differential data. Pin A8 is defined as the SDA pin, connected to pin D16, transmitting serial data. Pin B8 is defined as the SCL pin, connected to pin D15, transmitting the serial clock signal.

[0037] Pins A1, B1, and B12 are defined as ground pins and are all connected to pin C6. Pins A4, A9, B4, and B9 are defined as power supply pins and are all connected to pin C1.

[0038] Pins A2 and A3 are defined as the HDMI data differential pins, connected to pins D1 and D3 respectively, to transmit HDMI data. Pins A10 and A11 are defined as the HDMI data differential pins, connected to pins D1 and D3 respectively, to transmit HDMI data. Pins B2 and B3 are defined as the clock differential pin pair, connected to pins D10 and D12 respectively, to transmit the HDMI clock signal. Pins B10 and B11 are defined as the HDMI data differential pins, to transmit HDMI data, and connected to pins D7 and D9 respectively.

[0039] Pin A12 is defined as the hot-plug detection pin and is connected to pin D19.

[0040] It is understood that in this embodiment, four pins of the second Type-C plug 24 are connected to the first Type-C plug 21, nine pins of the HDMI plug 26 are connected to the first Type-C plug 21, and two pins of the USB plug 28 are connected to the first Type-C plug 21. In other embodiments, the second Type-C plug includes at least four pins C1, C4, C5, and C6; the HDMI plug includes at least nine pins D1, D3, D7, D9, D10, D12, D15, D16, and D19; and the USB plug includes at least two pins E3 and E2.

[0041] Compared to existing technologies, the second Type-C plug 24 of the multimedia cable 20 provided by this utility model connects to the power adapter. Through the CC1 and CC2 pins, based on the power transmission protocol, the drawing screen 10 can send a request to the power adapter to request the corresponding voltage and current. After receiving the request, the power adapter will adjust the output voltage and current according to the needs of the device, realizing adaptive power supply and a wide power supply range.

[0042] The above description is only a part of the embodiments of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the contents of the utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A multimedia cable, characterized in that, It includes a first Type-C plug, a second Type-C plug, an HDMI plug, and a USB plug. The first Type-C plug and the second Type-C plug are connected via a channel-configured differential pin pair, supporting a power delivery protocol. The first Type-C plug is connected to the HDMI plug, and the first Type-C plug is connected to the USB plug.

2. The multimedia cable according to claim 1, characterized in that, The first Type-C plug and the second Type-C plug are connected via a power pin, a ground pin, and a power transfer protocol pin pair. The first Type-C plug and the HDMI plug are connected via a data pin and a clock pin. The first Type-C plug and the USB plug are connected via a USB differential data pin pair.

3. The multimedia line according to claim 2, characterized in that, The data pins include serial data pins and HDMI data differential pin pairs, and the clock pins include serial clock pins and clock differential pin pairs.

4. The multimedia line according to claim 3, characterized in that, The number of HDMI data differential pin pairs is three.

5. The multimedia cable according to claim 3, characterized in that, The first Type-C plug includes pins A1 to A12 and pins B1 to B12. Pins A5 and B5 are differential pin pairs, pins A6 and A7 are differential pin pairs, pins B6 and B7 are differential pin pairs, and pins A8 and B8 are differential pin pairs. Any one of the four differential pin pairs can be defined as the channel configuration differential pin pair. Any one of the four differential pin pairs other than the channel configuration differential pin pair can be defined as the USB differential data pin pair. Any one of the four differential pin pairs other than the channel configuration differential pin pair and the USB differential data pin pair can be defined as the serial data pin and the serial clock pin.

6. The multimedia line according to claim 5, characterized in that, Pins A1, B1, and B12 are defined as ground pins and are all connected to pin C6 of the second Type-C connector. Pins A4, A9, B4, and B9 are defined as power pins and are all connected to pin C1 of the second Type-C connector. Pins C4 and C5 of the second Type-C connector are the power transfer protocol pin pair and are connected to the channel configuration differential pin pair.

7. The multimedia cable according to claim 5, characterized in that, Pins A2 and A3 are defined as the HDMI data differential pins and are connected to pins D1 and D3 of the HDMI connector, respectively. Pins A10 and A11 are defined as the HDMI data differential pins and are connected to pins D1 and D3 of the HDMI connector, respectively. Pins B2 and B3 are defined as the clock differential pin pair and are connected to pins D10 and D12 of the HDMI connector, respectively. Pins B10 and B11 are defined as the HDMI data differential pins and are connected to pins D7 and D9 of the HDMI connector, respectively. Pin D15 of the HDMI connector is connected to the serial clock pin, and pin D16 of the HDMI connector is connected to the serial data pin.

8. The multimedia line according to claim 7, characterized in that, Pin A12 is defined as a hot-plug detection pin and is connected to pin D19 of the HDMI plug.

9. The multimedia cable according to claim 5, characterized in that, The USB plug is a Type-A plug, and the E2 and E3 pins of the USB plug are connected to the USB differential data pin pair.

10. A hand-drawing device, comprising a hand-drawing screen and a multimedia cable, characterized in that, The multimedia cable is the multimedia cable as described in any one of claims 1-9, and the drawing screen includes a Type-C port that matches the first Type-C plug.

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