CN112203035B - Image input adapter board and image signal detection system - Google Patents

Abstract

The invention discloses an image input switching board and an image signal detection system. The image input transfer board includes a first port, a second port and a transfer port; the first port includes a first signal transmission pin, the second port includes a second signal transmission pin, and the transfer port is provided with a A signal transmission pin and a pin corresponding to the second signal transmission pin, the first signal transmission pin and the second signal transmission pin are respectively connected to the pins of the transfer port correspondingly, and the transfer port is also connected to the detection device; Among them, through the design of the image input adapter board, the first image signal output by the first screen line port (such as a 51-bit screen line port) of the main board or the second screen line port (such as a 30-bit screen line port) can be output. All the second image signals can be sent to the detection device for detection, which reduces the number of manual transfers and improves the compatibility of the detection device.

Description

Image input adapter board and image signal detection system

technical field

The invention relates to the field of mainboard testing, in particular to an image input switching board and an image signal detection system.

Background technique

Electronic devices such as flat-panel TVs, computers or mobile phones usually output image signals from the main board through screen cables and display them on the display screen. When testing the image signal, usually one end of the screen cable is connected to the motherboard, and the other end is connected to professional testing equipment, which is then tested by professional testing equipment.

The image signal in LVDS format is usually transmitted through a 51-bit screen line or a 30-bit screen line. However, at present, professional testing equipment only has 51-bit ports, so it can only detect the image signal output by the 51-bit screen line, and cannot access the 30-bit screen line. The output image signal has poor compatibility.

SUMMARY OF THE INVENTION

The main purpose of the present invention is to provide an image input adapter board and an image signal detection system, aiming at solving the technical problem of poor compatibility of the image signal detection equipment in the prior art.

In order to achieve the above object, the present invention provides an image input adapter board, the image input adapter board includes: a first port, a second port and an adapter port; the first port includes a first signal transmission pin, The second port includes a second signal transmission pin, the transfer port is provided with pins corresponding to the first signal transmission pin and the second signal transmission pin, and the first signal transmission pin The pins and the second signal transmission pins are respectively connected with the pins of the transfer port, and the transfer port is also connected with the detection device; wherein,

The first port is used to receive the first image signal output by the first screen line port of the main board, and send the first image signal to the transfer port through the first signal transmission pin;

The second port is used to receive the second image signal output by the second screen line port of the main board, and send the second image signal to the transfer port through the second signal transmission pin;

The transfer port is used to receive the first image signal or the second image signal through a pin corresponding to the first signal transmission pin or the second signal transmission pin, and send the the first image signal or the second image signal to the detection device.

Preferably, the first port further includes a first voltage output pin, a second voltage output pin and a third voltage output pin; the image input adapter board further includes a voltage detection port and a first resistor; the The first voltage output pin, the second voltage output pin and the third voltage output pin are respectively connected with the first end of the first resistor; the second end of the first resistor is connected with the voltage detection port connect.

Preferably, the second port further includes a fourth voltage output pin, a fifth voltage output pin, a sixth voltage output pin and a seventh voltage output pin; the fourth voltage output pin, the The fifth voltage output pin, the sixth voltage output pin and the seventh voltage output pin are respectively connected to the first end of the first resistor.

Preferably, the image input adapter board further includes a second resistor, a third resistor and a fourth resistor; the first end of the second resistor is connected to the first voltage output pin, and the third resistor is connected to the first voltage output pin. The first end is connected to the second voltage output pin, the first end of the fourth resistor is connected to the third voltage output pin, the second end of the second resistor, the The second end and the second end of the fourth resistor are connected to the first end of the first resistor.

Preferably, the second resistor, the third resistor and the fourth resistor are all 0Ω resistors.

The present invention also provides an image signal detection system, the image signal detection system includes the above-mentioned image input adapter board.

Preferably, the image signal detection system further includes a detection device, and the detection device is connected to the adapter port.

Preferably, the image signal detection system further comprises a connecting line, one end of the connecting line is provided with a third port corresponding to the first port, and the other end of the connecting line is provided with a third port corresponding to the switching port The fourth port is connected to the first port, and the fourth port is connected to the transfer port.

Preferably, the first port is connected to a 51-bit screen line port of the mainboard.

Preferably, the second port is connected to the 30-bit screen line port of the main board

In the present invention, a first port, a second port and a transfer port are arranged in the image input transfer board; the first port includes a first signal transmission pin, the second port includes a second signal transmission pin, and the transfer port is provided with There are pins corresponding to the first signal transmission pin and the second signal transmission pin, the first signal transmission pin and the second signal transmission pin are respectively connected with the pins of the transfer port, and the transfer port is also connected to the detection port. device connection; the first port is used to receive the first image signal output by the first screen line port of the main board, and send the first image signal to the transfer port through the first signal transmission pin; the second port is used to receive the main board The second image signal output from the second screen line port, and the second image signal is sent to the transfer port through the second signal transmission pin; the transfer port is used to transmit the second image signal through the first signal transmission pin or the second signal The pin corresponding to the pin receives the first image signal or the second image signal, and sends the first image signal or the second image signal to the detection device. Through the design of the image input adapter board, the first screen of the main board can be The first image signal output by the line port (such as the 51-bit screen line port) or the second image signal output by the second screen line port (such as the 30-bit screen line port) can be sent to the detection equipment for detection, reducing manual transfer. The number of connections improves the compatibility of testing equipment.

Description of drawings

In order to explain the embodiments of the present invention or the technical solutions in the prior art more clearly, the following briefly introduces the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present invention, and for those of ordinary skill in the art, other drawings can also be obtained according to the structures shown in these drawings without creative efforts.

1 is a functional schematic diagram of an embodiment of an image input adapter board of the present invention;

2 is a schematic structural diagram of an embodiment of an image input adapter board of the present invention;

FIG. 3 is a functional schematic diagram of an embodiment of an image signal detection system of the present invention.

Description of reference numbers:

The realization, functional characteristics and advantages of the present invention will be further described with reference to the accompanying drawings in conjunction with the embodiments.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

It should be noted that if there are directional indications (such as up, down, left, right, front, back, etc.) involved in the embodiments of the present invention, the directional indications are only used to explain a certain posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication also changes accordingly.

In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only used for the purpose of description, and should not be construed as indicating or implying Its relative importance or implicitly indicates the number of technical features indicated. Thus, a feature delimited with "first", "second" may expressly or implicitly include at least one of that feature. In addition, the technical solutions between the various embodiments can be combined with each other, but must be based on the realization by those of ordinary skill in the art. When the combination of technical solutions is contradictory or cannot be realized, it should be considered that the combination of such technical solutions does not exist. , is not within the scope of protection required by the present invention.

The invention provides an image input switching board.

Referring to FIG. 1, in one embodiment, the image input adapter board includes a first port P1, a second port P2 and a transfer port PT; the first port P1 includes a first signal transmission pin RX0, the The second port P2 includes a second signal transmission pin RXE0. The transfer port PT is provided with pins corresponding to the first signal transmission pin RX0 and the second signal transmission pin RXE0. A signal transmission pin RX0 and the second signal transmission pin RXE0 are respectively connected to the pins of the transfer port PT, and the transfer port PT is also connected to a detection device (not shown); The first port P1 is used to receive the first image signal output by the first screen line port of the main board, and send the first image signal to the transfer port PT through the first signal transmission pin RX0; The second port P2 is used to receive the second image signal output by the second screen line port of the main board, and send the second image signal to the transfer port PT through the second signal transmission pin RXE0; The transfer port PT is used to receive the first image signal or the second image signal corresponding to the pin corresponding to the first signal transmission pin RX0 or the second signal transmission pin RXE0, and Sending the first image signal or the second image signal to the detection device.

It is understandable that the first screen line port may be a 51-bit screen line port on the main board, and the second screen line port may be a 30-bit screen line port on the main board. Since there are only 51-bit ports and no 30-bit ports in the detection device, the second image signal output by the 30-bit screen line port of the main board cannot be detected. In this embodiment, an image input adapter board is designed, and the adapter port PT can be compatible with 51-bit ports at the same time. The first image signal output from the screen line port and the second image signal output from the 30-bit screen line port can be detected by connecting the transfer port PT to the 51-bit port on the detection device through a connecting line. .

It should be noted that the first port P1 is a 51-bit port, and the definition of the port can refer to the following table 1:

1 foot VCC1 2 feet VCC2 3 feet VCC3 11 feet RX05+ 12 feet RX05- 13 feet RX04+ 14 feet RX04- 16 feet RX03+ 17 feet RX03- 19 feet RX02+ 20 feet RX02- 21 feet RX01+ 22 feet RX01- 23 feet RX00+ 24 feet RX00-

Table I

Among them, the 1st to 3rd pins are the first voltage output pin VCC1, the second voltage output pin VCC2 and the third voltage output pin VCC3, the 11th to 12th pins, the 13th to 14th pins, and the 16th to 17th pins. , The 19th to 20th feet, the 21st to 22nd feet, and the 23rd to 24th feet are respectively six pairs of signal transmission pins, namely the first signal transmission pin RX0.

The second port P2 is a 30-bit port, and the definition of the port can refer to the following table 2:

1 foot VCC4 2 feet VCC5 3 feet VCC6 4 feet VCC7 12 feet RXE0- 13 feet RXE0+ 15 feet RXE1- 16 feet RXE1+ 18 feet RXE2- 19 feet RXE2+ 21 feet RXE3- 22 feet RXE3+ 24 feet RXE4- 25 feet RXE4+ 27 feet RXE5- 28 feet RXE5+

Table II

Among them, the 1st to 4th pins are the fourth voltage output pin VCC4, the fifth voltage output pin VCC5, the sixth voltage output pin VCC6 and the seventh voltage output pin VCC7, the 12th to 13th pins, the 15th to the Pins 16, 18-19, 21-22, 24-25, and 27-28 are six pairs of signal transmission pins, namely the second signal transmission pin RXE0.

The transfer port PT is a 36-bit port, and the definition of the port can refer to the following table 3:

Table 3

Among them, the 5th to 16th pins are the pins RX0' corresponding to the first signal transmission pin RX0, and the 23rd to 34th pins are the pins RXE0' corresponding to the second signal transmission pin RXE0. The connection relationship between the first signal transmission pin RX0 on the first port P1 and the corresponding pin on the transfer port PT, and the second signal transmission pin RXE0 on the second port P2 and the corresponding pin on the transfer port PT. The connection relationship of the feet can be referred to in FIG. 2 , which will not be repeated here.

Further, the image input adapter board further includes a voltage detection port PV and a first resistor R1; the first voltage output pin VCC1, the second voltage output pin VCC2 and the third voltage output pin VCC3 is respectively connected to the first end of the first resistor R1; the second end of the first resistor R1 is connected to the voltage detection port PV.

The second port P2 also includes a fourth voltage output pin VCC4, a fifth voltage output pin VCC5, a sixth voltage output pin VCC6 and a seventh voltage output pin VCC7; the fourth voltage output pin VCC4, The fifth voltage output pin VCC5, the sixth voltage output pin VCC6 and the seventh voltage output pin VCC7 are respectively connected to the first end of the first resistor R1.

It should be understood that the voltage detection port PV is used to detect the voltage of the first port P1 or the second port P2 when a screen cable is connected.

Further, the image input adapter board further includes a second resistor R2, a third resistor R3 and a fourth resistor R4; the first end of the second resistor R2 is connected to the first voltage output pin VCC1, so The first end of the third resistor R3 is connected to the second voltage output pin VCC2, the first end of the fourth resistor R4 is connected to the third voltage output pin VCC3, and the second resistor R2 The second end, the second end of the third resistor R3 and the second end of the fourth resistor R4 are connected to the first end of the first resistor R1. The second resistor R2, the third resistor R3 and the fourth resistor R4 are all 0Ω resistors.

It should be understood that when the screen cable is connected to the first port P1, the first voltage output pin VCC1, the second voltage output pin VCC2 and the third voltage output pin VCC3 can all output the voltage of the first port P1 (that is, the screen The voltage of the first port P1 when the line is connected), the three pins can be protected by connecting 0Ω resistors to the three pins respectively to prevent the components from being burned out due to abnormal voltages on the three pins.

In a specific implementation, the 51-bit screen cable port of the main board can be connected to the first port P1 on the adapter board through the screen cable, and the 36-bit port of the connection cable can be connected to the adapter port PT on the adapter board. The 51-bit port is connected to the 51-bit port of the detection device, and the voltage indicator light of the detection device is connected to the voltage detection port PV. When the mainboard is powered on, it can transmit the first image signal to the detection device and detect whether the first port P1 has voltage;

Connect the 30-bit screen cable port of the motherboard to the second port P2 on the adapter board through the screen cable, connect the 36-bit port of the cable to the adapter port PT on the adapter board, and connect the 51-bit port of the cable to the detection device The 51-bit port is connected, and the voltage indicator of the detection device is connected to the voltage detection port PV. When the mainboard is powered on, it can transmit the second image signal to the detection device and detect whether the second port P2 has voltage.

In this embodiment, a first port, a second port and a transfer port are set in the image input transfer board; the first port includes a first signal transmission pin, the second port includes a second signal transmission pin, and the transfer port Pins corresponding to the first signal transmission pin and the second signal transmission pin are provided, and the first signal transmission pin and the second signal transmission pin are respectively connected to the pins of the transfer port, and the transfer port is also connected to the transfer port. The detection device is connected; the first port is used to receive the first image signal output by the first screen line port of the main board, and send the first image signal to the transfer port through the first signal transmission pin; the second port is used to receive The second image signal output by the second screen line port of the main board, and the second image signal is sent to the transfer port through the second signal transmission pin; the transfer port is used for passing the first signal transmission pin or the second signal The pin corresponding to the transmission pin correspondingly receives the first image signal or the second image signal, and sends the first image signal or the second image signal to the detection device. The first image signal output by the screen line port (such as the 51-bit screen line port) or the second image signal output by the second screen line port (such as the 30-bit screen line port) can be sent to the detection equipment for detection, reducing manual labor. The number of transfers improves the compatibility of detection equipment.

The present invention also provides an image signal detection system, the image signal detection system includes the above-mentioned image input adapter board, the circuit structure of the image input adapter board of the image signal detection system can refer to the above-mentioned embodiment, in It is not repeated here; it can be understood that, because the image signal detection system of this embodiment adopts the technical solution of the image input adapter board, the image signal detection system has all the above-mentioned beneficial effects.

Please also refer to FIG. 3 , the image signal detection system further includes a detection device (not shown), and the detection device is connected to the transfer port PT.

Further, the image signal detection system further includes a connecting line L, one end of the connecting line L is provided with a third port P3 corresponding to the first port P1, and the other end of the connecting line L is provided with a third port P3 corresponding to the first port P1. The fourth port P4 corresponding to the transit port PT, the third port P3 is connected to the first port P1, and the fourth port P4 is connected to the transit port PT.

The first port P1 is connected to a 51-bit screen line port (not shown) of the mainboard.

The second port P2 is connected to a 30-bit screen cable port (not marked) of the mainboard.

It is understandable that the first port P1 is connected to the 51-bit screen cable port of the main board through a 51-bit screen cable, and the first image signal can be obtained, and the second port P2 is connected to the 30-bit screen cable port of the main board through a 30-bit screen cable. A second image signal can be obtained.

The third port P3 is 51 ports, and the fourth port P4 is 36 ports. By using the connecting line L with two kinds of ports, the first image signal or the second image signal in the transfer port PT on the transfer board can be transmitted. into the port 51 of the detection device, so that the detection device can detect the image signal.

In this embodiment, through the design of the image signal detection system, the detection device can be connected to the first image signal output by the 51-bit screen line port of the main board, and the second image signal output by the 30-bit screen line port of the main board, so that it is not necessary to use The original screen detection improves the efficiency of equipment use and reduces the increase in the purchase cost of the original screen; at the same time, the use of professional testing equipment for testing, without the need to repeatedly mount the original screen, reduce the number of manual transfers and the operation intensity of manual transfer of the original screen, improve The test efficiency is improved, and to a certain extent, the original screen can be prevented from being damaged during the handling process.

The above are only preferred embodiments of the present invention, and are not intended to limit the scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the description and drawings of the present invention, or directly or indirectly applied in other related technical fields , are similarly included in the scope of patent protection of the present invention.

Claims (8)

1. An image input adapter board, characterized in that it comprises a first port, a second port, an adapter port, a voltage detection port and a first resistor; the first port includes a first signal transmission pin, a first a voltage output pin, a second voltage output pin and a third voltage output pin, the second port includes a second signal transmission pin, a fourth voltage output pin, a fifth voltage output pin, and a sixth voltage output pin pin and a seventh voltage output pin, the transfer port is provided with pins corresponding to the first signal transmission pin and the second signal transmission pin, the first signal transmission pin and the The second signal transmission pins are respectively connected with the pins of the transfer port, the transfer port is also connected with the detection equipment, the first voltage output pin, the second voltage output pin and the The third voltage output pin, the fourth voltage output pin, the fifth voltage output pin, the sixth voltage output pin, and the seventh voltage output pin are respectively connected to the first resistor of the first resistor. The second end of the first resistor is connected to the voltage detection port; wherein, The first port is used to receive the first image signal output by the first screen line port of the main board, and send the first image signal to the transfer port through the first signal transmission pin; The second port is used to receive the second image signal output by the second screen line port of the main board, and send the second image signal to the transfer port through the second signal transmission pin; The transfer port is used to receive the first image signal or the second image signal through a pin corresponding to the first signal transmission pin or the second signal transmission pin, and send the The first image signal or the second image signal is sent to the detection device, and the adapter port is compatible with the first image signal output by the 51-bit screen line port and the second image signal output by the 30-bit screen line port. 2. The image input adapter board according to claim 1, wherein the image input adapter board further comprises a second resistor, a third resistor and a fourth resistor; the first end of the second resistor is connected to the the first voltage output pin is connected, the first end of the third resistor is connected with the second voltage output pin, the first end of the fourth resistor is connected with the third voltage output pin, The second end of the second resistor, the second end of the third resistor and the second end of the fourth resistor are connected to the first end of the first resistor. 3 . The image input adapter board of claim 2 , wherein the second resistor, the third resistor and the fourth resistor are all 0Ω resistors. 4 . 4. An image signal detection system, characterized in that it comprises the image input adapter board according to any one of claims 1 to 3. 5 . The image signal detection system according to claim 4 , wherein the image signal detection system further comprises a detection device, and the detection device is connected to the switching port. 6 . 6 . The image signal detection system according to claim 5 , wherein the image signal detection system further comprises a connecting line, one end of the connecting line is provided with a third port corresponding to the first port, and the The other end of the connecting line is provided with a fourth port corresponding to the transfer port, the third port is connected with the first port, and the fourth port is connected with the transfer port. 7 . The image signal detection system according to claim 6 , wherein the first port is connected to a 51-bit screen line port of the mainboard. 8 . 8 . The image signal detection system according to claim 6 , wherein the second port is connected to a 30-bit screen line port of the motherboard. 9 .

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