Display function detection system

Abstract

A display function detection system includes an electronic device having both an external graphics card and an integrated graphics card, a first display screen electrically connected to the external graphics card, and a second display screen electrically connected to the integrated graphics card, wherein the electronic device includes a BIOS chip and a shielding unit. The BIOS chip includes a first detection module, a second detection module, and a restart module. The first detection module and the second detection module are used to test the display functions of the external graphics card and the integrated graphics card, respectively. The restart module is used to restart the electronic device after the first detection module tests the external graphics card or after the second detection module tests the integrated graphics card. The shielding unit is used to shield the display function of the integrated graphics card when the first detection module tests the external graphics card, or to shield the display function of the external graphics card when the second detection module tests the integrated graphics card. In this way, the detection efficiency will be improved.

Description

Technical Field

[0001] The invention relates to a display function detection system. Background Art

[0002] Computer devices need to be tested for their functions before leaving the factory, and testing the display function of the computer device is one of the important testing items. This testing item is usually divided into two parts: testing of external graphics cards and testing of integrated graphics cards.

[0003] However, when testing the integrated graphics card, the external graphics card needs to be manually unplugged from the electronic device so that the display is displayed through the integrated graphics card, which reduces the testing efficiency. Summary of the invention

[0004] In view of this, it is necessary to provide a display function detection system that can improve detection efficiency.

[0005] A display function detection system comprises an electronic device having both an external graphics card and an integrated graphics card, a first display screen electrically connected to the external graphics card and a second display screen electrically connected to the integrated graphics card, wherein the electronic device comprises a BIOS chip and a shielding unit;

[0006] The BIOS chip includes a first detection module, a second detection module and a restart module, the first detection module and the second detection module are respectively used to test the display function of the external graphics card and the integrated graphics card, and the restart module is used to restart the electronic device after the first detection module tests the display function of the external graphics card or the second detection module tests the display function of the integrated graphics card; and

[0007] The shielding unit is used to shield the display function of the integrated graphics card when the first detection module tests the display function of the external graphics card, or to shield the display function of the external graphics card when the second detection module tests the display function of the integrated graphics card.

[0008] Furthermore, the electronic device also includes a connection slot and a connector, the connection slot and the connector are both electrically connected to the BIOS chip, the connection slot is also electrically connected to the external graphics card, and the connector is also electrically connected between the integrated graphics card and the second display screen.

[0009] Further, when the first detection module tests the display function of the external graphics card, the BIOS chip controls the shielding unit to output a first shielding signal to the connector to shield the display function of the integrated graphics card; when the second detection module tests the display function of the integrated graphics card, the BIOS chip controls the shielding unit to output a second shielding signal to the connection slot to shield the display function of the external graphics card.

[0010] Furthermore, the electronic device also includes an input-output chip, which is electrically connected between the BIOS chip and the shielding unit. The input-output chip is used to send a control signal to the shielding unit under the control of the BIOS chip, and the shielding unit outputs a corresponding shielding signal according to the control signal to shield the display function of the external graphics card or the integrated graphics card.

[0011] Furthermore, the first shielding signal and the second shielding signal are both high-level signals.

[0012] Furthermore, the shielding unit includes an electronic switch and a first resistor, the connecting slot includes a first detection pin, the connector includes a second detection pin, the first end of the electronic switch is electrically connected to the first detection pin of the connecting slot, the first end of the electronic switch is also electrically connected to the input-output chip, the second end of the electronic switch is electrically connected to the second detection pin of the connector, the second end of the electronic switch is also electrically connected to a power supply through the first resistor, and the third end of the electronic switch is grounded.

[0013] Furthermore, the shielding unit further includes a second resistor, and the first end of the electronic switch is further electrically connected to the power supply through the second resistor.

[0014] Furthermore, the electronic switch is an N-channel enhancement type field effect transistor.

[0015] Furthermore, the first end, the second end and the third end of the electronic switch correspond to the gate, the drain and the source of the N-channel enhancement type field effect transistor respectively.

[0016] Furthermore, the power supply outputs a voltage of 3.3 volts.

[0017] The above-mentioned display function detection system tests the display functions of the external graphics card and the integrated graphics card respectively through the first detection module and the second detection module, restarts the electronic device after the first detection module tests the display function of the external graphics card or after the second detection module tests the display function of the integrated graphics card through the restart module, and shields the display function of the integrated graphics card when the first detection module tests the display function of the external graphics card or shields the display function of the external graphics card when the second detection module tests the display function of the integrated graphics card through the shielding unit. In this way, the display functions of the external graphics card and the integrated graphics card can be detected respectively without plugging in or out the external graphics card, thereby improving the detection efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1A block diagram of a preferred embodiment of the display function detection system of the present invention.

[0019] Figure 2 for Figure 1 Another block diagram of a preferred embodiment of the display function detection system in FIG.

[0020] Figure 3 for Figure 2 A module diagram of a preferred implementation of a BIOS chip.

[0021] Figure 4 for Figure 2 A circuit diagram of a preferred implementation of the display function detection system in FIG.

[0022] Main component symbols

[0023] Display function detection system 100

[0024] Electronic device 10

[0025] BIOS chip 11

[0026] The first detection module 111

[0027] The second detection module 112

[0028] Restart module 113

[0029] Input and output chip 12

[0030] Shielding unit 13

[0031] Connection slot 14

[0032] External graphics card 15

[0033] Connector 16

[0034] Integrated graphics 17

[0035] Display device 20

[0036] Display 22, 24

[0037] Resistors R1, R2

[0038] Electronic switch Q1

[0039] Power supply VCC

[0040] The following specific implementation manner will further illustrate the present invention in conjunction with the above-mentioned drawings. DETAILED DESCRIPTION

[0041] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0042] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the display function detection system of the present invention will be described in further detail and related explanations in conjunction with the accompanying drawings and implementation methods.

[0043] Please refer to Figures 1 to 3 A preferred embodiment of the present invention provides a display function detection system 100, which includes an electronic device 10 and a display device 20. The display function detection system 100 is used to detect the display function of the electronic device 10 and display the detection result through the display device 20. In this embodiment, the electronic device 10 can be a computer motherboard.

[0044] The electronic device 10 includes a basic input output system (BIOS) chip 11, an input output chip 12, a shielding unit 13, a connection slot 14, an external graphics card 15, a connector 16 and an integrated graphics card 17. The display device 20 includes a display screen 22 and a display screen 24.

[0045] The BIOS chip 11 is electrically connected to the connection slot 14 and the connector 16. The input-output chip 12 is electrically connected between the BIOS chip 11 and the shielding unit 13. The shielding unit 13 is electrically connected between the connection slot 14 and the connector 16. The external graphics card 15 is pluggable connected to the connection slot 14, and the external graphics card 15 is also electrically connected to the display screen 22. The connector 16 is electrically connected to the integrated graphics card 17. The connector 16 is also pluggable connected to the display screen 24.

[0046] In this embodiment, the BIOS chip 11 includes a first detection module 111, a second detection module 112 and a restart module 113. The first detection module 111 is used to detect the display function of the external graphics card 15. The second detection module 112 is used to detect the display function of the integrated graphics card 17. The restart module 113 is used to restart the electronic device 10 after the first detection module 111 tests the display function of the external graphics card 15 or the second detection module 112 tests the display function of the integrated graphics card 17.

[0047] The shielding unit 13 is used to shield the display function of the integrated graphics card 17 when the first detection module 111 tests the display function of the external graphics card 15, or to shield the display function of the external graphics card 15 when the second detection module 112 tests the display function of the integrated graphics card 17.

[0048] For example, when the electronic device 10 is turned on and enters the detection state, the shielding unit 13 shields the display function of the integrated graphics card 17, and the first detection module 111 detects the display function of the external graphics card 15. At this time, it can be determined whether the display function of the external graphics card 15 is normal through the display information output by the display screen 22. Then, when the first detection module 111 completes the detection of the display function of the external graphics card 15, the restart module 113 restarts the electronic device 10. The shielding unit 13 shields the display function of the external graphics card 15, and the second detection module 112 detects the display function of the integrated graphics card 17. At this time, it can be determined whether the display function of the integrated graphics card 17 is normal through the display information output by the display screen 24. It can be understood that the detection means for the first detection module 111 and the second detection module 112 to detect the external graphics card 15 and the integrated graphics card 17 respectively are both conventional detection means, which will not be repeated here.

[0049] Furthermore, the input-output chip 12 is used to send a control signal to the shielding unit 13 under the control of the first detection module 111 or the second detection module 112, and the shielding unit 13 shields the display function of the external graphics card 15 or the integrated graphics card 17 according to the control signal.

[0050] For example, when the first detection module 111 needs to test the display function of the external graphics card 15, the input-output chip 12 sends a control signal to the shielding unit 13 under the control of the first detection module 111, so that the shielding unit 13 outputs a first shielding signal to the connector 16 to shield the display function of the integrated graphics card 17.

[0051] When the second detection module 112 needs to test the display function of the integrated graphics card 17 , the input-output chip 12 sends a control signal to the connection slot 14 under the control of the second detection module 112 to shield the display function of the external graphics card 15 .

[0052] In this implementation manner, both the first shielding signal and the second shielding signal are high level signals.

[0053] Please refer to Figure 4 , Figure 41 is a circuit connection diagram of a preferred embodiment of the shielding unit 13 in the present application. The shielding unit 13 includes an electronic switch Q1 and two resistors R1-R2. The connecting slot 14 includes a detection pin IDO. The connector 16 includes a detection pin PRSENT.

[0054] The detection pin IDO of the connection slot 14 is electrically connected to the BIOS chip. The detection pin PRSENT of the connector 16 is electrically connected to the BIOS chip. The first end of the electronic switch Q1 is electrically connected to the detection pin IDO of the connection slot 14, and the first end of the electronic switch Q1 is also electrically connected to the power supply VCC through the resistor R1, and the first end of the electronic switch Q1 is also electrically connected to the input-output chip 12. The second end of the electronic switch Q1 is electrically connected to the detection pin PRSENT of the connector 16, and the second end of the electronic switch Q1 is also electrically connected to the power supply VCC through the resistor R2. The third end of the electronic switch Q1 is grounded.

[0055] In this embodiment, when the detection pin IDO of the connection slot 14 is at a high level, the display function of the external graphics card 15 will be shielded. When the detection pin PRSENT of the connector 16 is at a high level, the display function of the integrated graphics card 17 will be shielded.

[0056] When in use, the display screen 22 and the display screen 24 are both normally connected to the electronic device 10, and the display function detection system 100 is started. The first detection module 111 controls the input-output chip 12 to send a low-level control signal to the first end of the electronic switch Q1, and the electronic switch Q1 is turned off. The second end of the electronic switch Q1 will maintain a high level, thereby shielding the display function of the integrated graphics card 17. The first detection module 111 detects the display function of the external graphics card 15 and displays the detection result of the external graphics card 15 through the display screen 22. Then, when the first detection module 111 completes the detection of the external graphics card 15, the restart module 113 restarts the electronic device 10. After the electronic device 10 is restarted, the second detection module 112 will control the input-output chip 12 to send a high-level control signal to the first end of the electronic switch Q1, the electronic switch Q1 is turned on, and the second end of the electronic switch Q1 is at a low level, thereby shielding the display function of the external graphics card 15. The second detection module 112 detects the display function of the integrated graphics card 17 and displays the detection result of the integrated graphics card 17 through the display screen 24.

[0057] In a preferred embodiment, the electronic switch Q1 may be an N-channel enhancement type field effect transistor. The first terminal, the second terminal and the third terminal of the electronic switch Q1 correspond to the gate, the drain and the source of the N-channel enhancement type field effect transistor respectively.

[0058] In a preferred embodiment, the power source VCC can output a voltage of 3.3 volts.

[0059] The display function detection system 100 tests the display functions of the external graphics card 15 and the integrated graphics card 17 respectively through the first detection module 111 and the second detection module 112, restarts the electronic device 10 through the restart module 113 after the first detection module 111 tests the display function of the external graphics card 15 or after the second detection module 112 tests the display function of the integrated graphics card 17, and shields the display function of the integrated graphics card 17 when the first detection module 111 tests the display function of the external graphics card 15 or shields the display function of the external graphics card 15 when the second detection module 112 tests the display function of the integrated graphics card 17. In this way, the display functions of the external graphics card 15 and the integrated graphics card 17 can be detected respectively without plugging in or out the external graphics card 15, thereby improving the detection efficiency.

[0060] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit the present invention, although the present invention has been described in detail with reference to the preferred embodiments.

[0061] It should be understood by those skilled in the art that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention.

[0062] Furthermore, based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the scope of protection of the present invention.

Claims

1. A display function detection system, comprising an electronic device having both an external graphics card and an integrated graphics card, a first display screen electrically connected to the external graphics card, and a second display screen electrically connected to the integrated graphics card, characterized in that: The electronic device includes a BIOS chip and a shielding unit; The BIOS chip includes a first detection module, a second detection module and a restart module, wherein the first detection module and the second detection module are respectively used to test the display function of the external graphics card and the integrated graphics card, and the restart module is used to restart the electronic device after the first detection module tests the display function of the external graphics card or the second detection module tests the display function of the integrated graphics card; as well as The electronic device further comprises a connection slot and a connector, the BIOS chip is electrically connected to the connection slot and the connector, the shielding unit is electrically connected between the connection slot and the connector, the connection slot is electrically connected to the external graphics card, and the connector is electrically connected between the integrated graphics card and the second display screen; the BIOS chip is electrically connected to the detection pin of the connection slot and the detection pin of the connector respectively; the BIOS chip is used to determine the test state of the external graphics card based on the detection pin voltage of the connection slot, and to determine the test state of the integrated graphics card based on the detection pin voltage of the connector; The first detection module is also used to control the shielding unit to output a first shielding signal to the integrated graphics card when testing the display function of the external graphics card; the second detection module is also used to control the shielding unit to output a second shielding signal to the external graphics card when testing the display function of the integrated graphics card.

2. The display function detection system according to claim 1, characterized in that: When the first detection module tests the display function of the external graphics card, the BIOS chip controls the shielding unit to output a first shielding signal to the connector to shield the display function of the integrated graphics card; when the second detection module tests the display function of the integrated graphics card, the BIOS chip controls the shielding unit to output a second shielding signal to the connecting slot to shield the display function of the external graphics card.

3. The display function detection system according to claim 2, characterized in that: The electronic device also includes an input / output chip, which is electrically connected between the BIOS chip and the shielding unit. The input / output chip is used to send a control signal to the shielding unit under the control of the BIOS chip, and the shielding unit outputs a corresponding shielding signal according to the control signal to shield the display function of the external graphics card or the integrated graphics card.

4. The display function detection system according to claim 2, characterized in that: The first shielding signal and the second shielding signal are both high level signals.

5. The display function detection system according to claim 3, characterized in that: The shielding unit includes an electronic switch and a first resistor, the connecting slot includes a first detection pin, the connector includes a second detection pin, the first end of the electronic switch is electrically connected to the first detection pin of the connecting slot, the first end of the electronic switch is also electrically connected to the input / output chip, the second end of the electronic switch is electrically connected to the second detection pin of the connector, the second end of the electronic switch is also electrically connected to a power supply through the first resistor, and the third end of the electronic switch is grounded.

6. The display function detection system according to claim 5, characterized in that: The shielding unit further includes a second resistor, and the first end of the electronic switch is further electrically connected to the power supply through the second resistor.

7. The display function detection system according to claim 5, characterized in that: The electronic switch is an N-channel enhancement type field effect transistor.

8. The display function detection system according to claim 7, characterized in that: The first end, the second end and the third end of the electronic switch correspond to the gate, the drain and the source of the N-channel enhancement type field effect transistor respectively.

9. The display function detection system according to claim 5, characterized in that: The power supply outputs a voltage of 3.3 volts.

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