CN201440468U - an HDMI connector - Google Patents

Abstract

The utility model discloses an HDMI connector, comprising a USB joint and an HDMI line; one end of the HDMI line is connected with the USB joint, the GND pin of the HDMI is connected with the GND pin of the USB joint, and the NC lead foot of the HDMI is connected with +5V lead foot of the USB joint. In the utility model, the HDMI and the USB (universal serial bus, universal serial bus) joint are combined to overcome the disadvantages caused by external power supply of an electricity and/or optical fiber HDMI signal amplifying system and a special power plug. The USB plug is a standard plug of TV and a DVD product; the HDMI system and the USB standard plug are combined to be helpful to reducing the system cost.

Description

an HDMI connector

technical field

The utility model relates to a low-cost, high-bandwidth novel optical transmission system, in particular to an optical HDMI (high definition multimedia interface) system and its electrical interface and HDMI signal amplifier.

Background technique

HDCP (high-bandwidth digital content protection, high-bandwidth digital content protection) specification is to protect the digital entertainment content transmitted through the HDMI interface, completed by Intel Corporation. The HDCP specification provides a complete solution for sending and receiving digital entertainment content to HDMI-compatible digital displays.

Currently, there are two ways to achieve high bandwidth: stranded shielded copper wire or fiber optics. The first generation HDMI transmission system is a parallel shielded copper cable. As data transmission rates continue to increase, the distance over which shielded copper cables can transmit high-bandwidth data is dramatically shortened. Due to the advantages of bandwidth, HDMI uses single-core/multi-core parallel optical fibers. A quadruple-fiber mode combined with copper wire can overcome the bandwidth deficiency of copper wire cable. There is also a two-core fiber mode in the industry, which has six sets of optical transceivers operating at three different wavelengths, such as 850nm, 1310nm and 1550nm. Single-mode fiber is also included in HDMI applications. However, the above-mentioned models are not only bulky, but also require an external power port to be provided on the main body of the model.

Utility model content

In view of this, the purpose of this utility model is to provide a kind of HDMI connector, by combining USB (universal serial bus, universal serial bus) interface and HDMI to provide power for equipment.

To achieve the above object, the utility model provides an HDMI connector, comprising: a USB connector; and an HDMI cable, one end of the HDMI cable is connected to the USB connector, wherein the GND pin of the HDMI is connected to the GND pin of the USB connector Connect, the NC pin of the HDMI is connected with the +5V pin of the USB connector.

Further, the HDMI connector further includes an HDMI plug for connecting devices, the HDMI plug is connected to the other end of the HDMI cable, and is connected to a USB connector through the HDMI cable.

Further, the HDMI connector further includes an HDMI socket for connecting devices, the HDMI socket is connected to the other end of the HDMI cable, and is connected to a USB connector through the HDMI cable.

Further, the CEC pin of the HDMI is multiplexed for low data rate signals, and when a signal with a priority level higher than the low data rate signal needs to be transmitted, the CEC pin stops transmitting the low data rate signal, Until the transmission of the signal with the priority level higher than the low data rate signal is completed.

To achieve the above object, the utility model also provides another HDMI connector, including: a USB connector; and an HDMI connector connected to the USB connector, the HDMI connector includes two ports, wherein the GND pin of the HDMI is connected to the USB The GND pin of the connector is connected, and the NC pin of the HDMI is connected with the +5V pin of the USB connector.

Further, the two ports of the HDMI connector are respectively an HDMI plug and an HDMI socket.

Based on the above technical solution, the utility model combines the new HDMI and USB connector to overcome the defects caused by the external power supply and the special power plug for the electrical and/or optical fiber HDMI signal amplification system, and help reduce the cost of the system. From a package design perspective, the main advantage of this is space savings. From a consumer standpoint, fewer ports are often an option users want.

Description of drawings

The accompanying drawings described here are used to provide further explanation of the utility model and constitute a part of the utility model. The exemplary embodiment of the utility model and its description are only used to explain the utility model, but do not constitute an improper limitation of the utility model. In the attached picture:

Fig. 1 is a structural diagram of an HDMI connector according to an embodiment of the present invention.

Fig. 2 is a structural diagram of an HDMI connector according to another embodiment of the present invention.

Fig. 3 is a structural diagram of an HDMI connector according to a further embodiment of the present invention.

Fig. 4 is a schematic diagram of pins of a USB interface according to an embodiment of the present invention.

FIG. 5 is a schematic diagram of the pins and physical layout of Type A HDMI according to an embodiment of the present invention.

Detailed ways

The utility model is described in more detail below with reference to the accompanying drawings, in which exemplary embodiments of the utility model are illustrated.

FIG. 1 is a structural diagram of an HDMI connector 100 according to an embodiment of the present invention. As shown in FIG. 1 , the HDMI connector 100 includes a USB connector 102 , an HDMI cable 104 and an HDMI plug 106 . One end of the HDMI cable 104 can be connected to the USB connector 102 . The GND pin of the USB interface can be connected with the GND pin of the HDMI. The +5V pin of the USB interface can be connected with the NC pin of HDMI. The other pins of HDMI are connected normally. In one embodiment, for type A HDMI, pin 4 of the type A USB interface can be connected to pin 17 of type A HDMI; pin 1 of the type A USB interface can be connected to pin 14 of type A HDMI. In another embodiment, for Type B HDMI, pin 4 of the Type A USB interface can be connected to pin 27 of Type B HDMI; pin 1 of the Type A USB interface can be connected to pin 23 or 24 of Type B HDMI . In a further embodiment, for Type-C HDMI, pin 4 of the Type-A USB interface can be connected to pin 13 of Type-C HDMI; pin 1 of the Type-A USB interface can be connected to pin 17 of Type-C HDMI. Wherein, the schematic diagram and description of the pins of the Type A USB interface are shown in FIG. 4 and Table 1 below. See Table 2, Table 3, and Table 4 below for the pins and signal assignments of Type A, B, and C HDMI.

The other end of the HDMI cable can be connected with an HDMI plug 106 for connecting devices. The USB connector 102 can obtain power from a device with a USB socket, such as HDTV (high definition television, high-definition television). Through the HDMI cable 104, the HDMI plug 106 can provide 5V and 500mA power for other devices, such as HDMI signal amplifiers. With this configuration, the HDMI signal amplifier does not need to obtain power through a dedicated DC power plug, but obtains power from the USB interface controller through the HDMI cable 104 . Digital audio and video signals can be normally transmitted through the HDMI cable 104 . From a package design perspective, the main advantage of this is space savings. From a consumer standpoint, fewer ports are often the performance users want. In one embodiment, pin 14 of Type A HDMI may not be connected to a near-end HDMI connector, however, pin 14 may still be connected to a remote HDMI plug 106 or receptacle. In another embodiment, the other end of the HDMI cable 104 may be a connector, such as a VGA (video graphic array, display graphics array) or a component connector with a power port.

FIG. 2 is a structural diagram of an HDMI connector 200 according to another embodiment of the present invention. As shown in FIG. 2 , the HDMI connector 200 includes a USB connector 102 , an HDMI cable 104 and an HDMI socket 206 . Both types of connectors with HDMI plugs and HDMI sockets as shown in Fig. 1 and Fig. 2 are applicable to the interface of the HDMI signal amplifier. Commercial HDMI systems have HDMI sockets on both the signal receiving end and the signal sending end. Therefore, the USB plug and HDMI are integrated.

FIG. 3 is a structural diagram of an HDMI connector 300 according to a further embodiment of the present invention. The HDMI connector 300 shown in FIG. 3 includes a USB connector 102 and an HDMI connector 304 . The HDMI connector 300 in FIG. 3 is similar to the HDMI connector 100 or 200 in FIG. 1 or FIG. 2 , and the length of the HDMI cable of the HDMI connector 300 is shortened into a small HDMI connector 304 . The HDMI connector 304 has two ports. The two ports can be the same or different, for example, one port is an HDMI plug and the other port is an HDMI socket. The small size of the HDMI connector 300 can provide convenience for some special applications.

Fig. 4 is a schematic diagram of pins of a USB interface according to an embodiment of the present invention. No USB data cables are used in this configuration. The USB interface can be a USB plug or a USB socket, and the VCC and GND pins of the USB interface can be used to obtain power in the utility model.

The following table 1 is the pins corresponding to Type A HDMI in Figure 4 and their corresponding descriptions.

Pin pin name describe color 1 VCC +5V DC red 2 D- data- white 3 D+ data+ green 4 GND land black

Table 1

FIG. 5 is a schematic diagram of the pins and physical layout of Type A HDMI according to an embodiment of the present invention. The pins and physical layout of Type A HDMI as shown in Figure 5 conform to the HDMI 1.3a standard. Table 2 below lists the pins and signal assignments of Type A HDMI. Among them, 13 (CEC) pin can be used to transmit the signal of low data rate. In one embodiment, pin 13 can be multiplexed with a low data rate signal as long as the signal remains low priority. For example, when pin 13 is in an idle state, it can be used to send an IR (infrared, infrared) signal. During the transmission of the IR signal, if it is necessary to start transmitting a signal with a high priority, the transmission of the IR signal will be stopped until the transmission of the signal with a high priority is completed.

Table 2

Table 3 lists the pins of Type B HDMI and their signal assignments.

table 3

Table 4 lists the pins of Type C HDMI and their signal assignments.

Pin Signal distribution 1 TMDS Data2Shield 2 TMDS Data2+ 3 TMDS Dsta2- 4 TMDS Data1 Shield 5 TMDS Data1+ 6 TMDS Data1- 7 TMDS Data0 Shield

Pin Signal distribution 8 TMDS Data0+ 9 TMDS Data0- 10 TMDS Clock Shield 11 TMDS Clock+ 12 TMDS Clock- 13 DDC/CEC Ground 14 CEC 15 SCL 16 SDA 17 Reserved 18 +5V Power 19 Hot Plug Detect

Table 4

As listed in Table 2, 3, and 4, the pins and signal assignments of Type A, Type B, and Type C HDMI are in line with the HDMI 1.3a standard.

The description of the present invention has been presented for purposes of illustration and description, but is not intended to be exhaustive or limited to the invention in the form disclosed. Many modifications and changes will be apparent to those of ordinary skill in the art. The embodiment was chosen and described in order to better explain the principle and practical application of the invention, and to enable those of ordinary skill in the art to understand the invention and design various embodiments with various modifications suitable for particular purposes.

Claims (6)

1. a HDMI connector is characterized in that, comprising:

The USB joint; With

The HDMI line, an end of described HDMI line is connected with the USB joint, and the GND pin of wherein said HDMI is connected with the GND pin of USB joint, the NC pin of described HDMI and USB joint+the 5V pin is connected.

2. HDMI connector according to claim 1 is characterized in that, also comprises:

Be used for the HDMI plug of connection device, described HDMI plug is connected in the other end of described HDMI line, is connected with the USB joint by described HDMI line.

3. HDMI connector according to claim 1 is characterized in that, also comprises:

Be used for the HDMI socket of connection device, described HDMI socket is connected in the other end of described HDMI line, is connected with the USB joint by described HDMI line.

4. HDMI connector according to claim 1, it is characterized in that, the CEC pin of described HDMI is for the signal multiplexing of low data rate, when priority level is higher than the signal demand transmission of described low data rate signal, described CEC pin stops to transmit the signal of described low data rate, is higher than the signal end of transmission of described low data rate signal up to described priority level.

5. a HDMI connector is characterized in that, comprising:

The USB joint; With

The HDMI joint that is connected with the USB joint, described HDMI joint comprises two ports, the GND pin of wherein said HDMI is connected with the GND pin of USB joint, the NC pin of described HDMI and USB joint+the 5V pin is connected.

6. HDMI connector according to claim 5 is characterized in that, two ports of described HDMI joint are respectively HDMI plug and HDMI socket.

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