CN114076905A - EDP and USB signal test tool board - Google Patents

Abstract

The invention relates to the technical field of electronics, in particular to an EDP (electronic data processing) and USB (universal serial bus) signal test jig board. The EDP and USB signal test fixture plate comprises a printed circuit board, an EDP signal path arranged on the printed circuit board and a USB signal path arranged on the printed circuit board. The EDP and USB signal test fixture plate can directly connect EDP signals on a mainboard of electronic equipment to a liquid crystal display panel through the fixture plate, and the fixture plate is also provided with a USB signal channel, so that the USB function of the mainboard can be tested through testing the USB signal channel, and therefore, the EDP and USB signals can be simply and quickly detected, and the requirement of a client on an extension function can be met.

Description

An EDP and USB signal test fixture board

【Technical field】

The invention relates to the field of electronic technology, in particular to an EDP and a USB signal test fixture board.

【Background technique】

With the continuous development of modern technology, notebook computers and other intelligent electronic devices are constantly updated, and users' requirements for electronic devices are getting higher and higher.

EDP is a communication interface method for computer display screens. It uses simpler connectors and fewer pins to transmit high-resolution signals and can achieve simultaneous transmission of multiple data. However, the EDP signal line and the USB signal line on the existing notebook computer are generally located on the motherboard of the notebook computer. During the test, the entire motherboard needs to be tested to detect whether the EDP signal line and the USB signal line are in good condition. Therefore, simple and fast detection of EDP signals and USB signals cannot be achieved in this way, and when the EDP signal lines and USB signal lines need to be functionally extended, they cannot meet the requirements. For example, in medical equipment, the EDP signals need to be extended separately.

Therefore, it is necessary to design an EDP and USB signal test fixture board to solve the above problems.

[Content of the invention]

The purpose of the present invention is to provide an EDP and USB signal testing jig board, which can simply and quickly detect EDP and USB signals, and can meet the extended function requirements of customers.

In order to achieve the above object, the present invention adopts the following technical scheme:

An EDP and USB signal test fixture board, comprising a printed circuit board, an EDP signal path arranged on the printed circuit board, and a USB signal path arranged on the printed circuit board; wherein,

The EDP signal path has an EDP input interface and an EDP output interface, and the signal between the EDP input interface and the EDP signal on the main board of the electronic device is conductive;

The USB signal path has a USB input interface and a USB output interface, and the signal is connected between the USB input interface and the USB interface on the main board of the electronic device.

Further, the electronic device is a notebook computer.

Further, the EDP output interface is communicated with the liquid crystal display panel.

Further, the USB output interface is communicated with a USB device.

Further, described EDP input interface and EDP output interface have 16 pins respectively, wherein the 1st pin and the 2nd pin, the 4th pin and the 5th pin, the 7th pin and the 8th pin, The 10th and 11th pins form four main channels, the 13th and 14th pins form an auxiliary channel, and the 3rd, 6th, 9th and 12th pins are unidirectional channels. The 15th pin and the 16th pin are ground pins and ground lines.

Further, the 3rd, 6th, 9th pins and the 12th pin are grounded.

Compared with the prior art, the EDP and USB signal test jig board of the present invention communicates with the EDP signal separated from the main board of the electronic device through the jig board, so that the EDP signal on the main board of the electronic device can be passed through the jig. The board is directly connected to the LCD panel to test whether the EDP signal of the main board is good; and a USB signal path is also set on the jig board, and the USB function of the main board can be tested by testing the USB signal path, so that the EDP can be tested simply and quickly. And USB signal detection, and can meet the customer's extended function requirements.

【Description of drawings】

FIG. 1 is a schematic block diagram of an EDP and USB signal test fixture board of the present invention.

FIG. 2 is a block diagram illustrating the use of the EDP and USB signal test jig board of the present invention.

FIG. 3 is a schematic diagram of an EDP input interface and an EDP output interface in the EDP and USB signal test fixture board of the present invention.

【Detailed ways】

In order to have a further understanding of the purpose, technical effect and technical means of the present invention, a detailed description is now given as follows in conjunction with the accompanying drawings.

Please refer to FIG. 1 and FIG. 2 , the present invention provides an EDP and USB signal test fixture board, which includes a printed circuit board, an EDP signal path 100 disposed on the printed circuit board, and a USB port disposed on the printed circuit board. Signal pathway 200; wherein,

The EDP signal path 100 has an EDP input interface 110 and an EDP output interface 120, the EDP input interface 120 and the EDP signal 11 on the electronic device mainboard 10 are in signal conduction, and the EDP signal 11 on the electronic device mainboard 10 is connected. Separated from the motherboard 10;

The USB signal path 200 has a USB input interface 210 and a USB output interface 220. Signals between the USB input interface 210 and the USB interface 20 on the electronic device mainboard 10 are connected, for example, through a flexible circuit board. The interface 20 is a USB2.0 interface.

Wherein, the electronic device is a notebook computer, and can also be other electronic devices. The EDP output interface 120 communicates with the liquid crystal display panel 300, and can connect the EDP signal to the liquid crystal display panel 300. The liquid crystal display panel 300 can not only test whether the EDP signal is normal, but also can be used as an extension of electronic equipment.

The USB output interface 220 is in communication with the USB device 400, for example, the USB device 400 is a U disk.

Please refer to FIG. 3 , since the EDP input interface 210 and the EDP output interface 220 are the same, only the schematic diagram of the EDP input interface 210 is shown in FIG. 3 . The EDP input interface 210 and the EDP output interface 220 respectively have 16 pins 211, wherein the 1st pin and the 2nd pin, the 4th pin and the 5th pin, the 7th pin and the 8th pin, Pins 10 and 11 form four main channels for transmitting various types of video data and audio data. Pins 13 and 14 form an auxiliary channel for transmitting data with low bandwidth requirements. Pins 3, 6, 9 and 12 are one-way channels, which are used to detect whether the E-layer device and the lower-layer device are connected, and the 15th and 16th pins are ground pins and ground wires. Further, the 3rd, 6th, 9th pins and the 12th pin are grounded.

Compared with the prior art, the EDP and USB signal test jig board of the present invention is connected with the EDP signal 11 separated from the electronic device main board 10 through the jig board, so that the EDP signal on the electronic device main board 10 can be connected. 11. Directly connect to the liquid crystal display panel 300 through the jig board to test whether the EDP signal 11 of the main board 10 is good; and also set the USB signal 200 path on the jig board, and test the USB function of the main board 10 by testing the USB signal path 200 , so that the EDP and USB signals can be detected simply and quickly, and the extended function requirements of customers can be met.

The technical principles of the present invention have been described above with reference to specific embodiments. These descriptions are only for explaining the principles of the present invention, and cannot be interpreted as limiting the protection scope of the present invention in any way. Based on the explanations herein, those skilled in the art can think of other specific embodiments of the present invention without creative efforts, and these methods will all fall within the protection scope of the present invention.

Claims (6)

1. an EDP and USB signal test fixture board, is characterized in that, comprises printed circuit board, the EDP signal path that is arranged on the printed circuit board and the USB signal path that is arranged on the printed circuit board; Wherein, The EDP signal path has an EDP input interface and an EDP output interface, and the signal between the EDP input interface and the EDP signal on the main board of the electronic device is conductive; The USB signal path has a USB input interface and a USB output interface, and the signal is connected between the USB input interface and the USB interface on the main board of the electronic device. 2 . The EDP and USB signal test fixture board according to claim 1 , wherein the electronic device is a notebook computer. 3 . 3 . The EDP and USB signal test fixture board according to claim 1 , wherein the EDP output interface is communicated with a liquid crystal display panel. 4 . 4 . The EDP and USB signal test fixture board according to claim 1 , wherein the USB signal output interface is communicated with a USB device. 5 . 5. EDP and USB signal test fixture board according to claim 1, is characterized in that, described EDP input interface and EDP output interface have 16 pins respectively, wherein the 1st pin and the 2nd pin, Pins 4 and 5, pins 7 and 8, pins 10 and 11 form four main channels, pins 13 and 14 form an auxiliary channel, and pins 3 and 14 form an auxiliary channel. , 6, 9 and 12 pins are unidirectional channels, and the 15th and 16th pins are ground pins and ground wires. 6 . The EDP and USB signal test fixture board according to claim 5 , wherein the 3rd, 6th, and 9th pins and the 12th pin are grounded. 7 .

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