Hot plug control device, display screen and display equipment

Abstract

The invention relates to a hot plug control device, a display screen and display equipment, the display screen comprises a box body and a plurality of display modules, each display module is detachably connected with the box body, and the hot plug control device comprises a detection circuit and a control circuit. The connection state between the box body and each display module is detected through a detection circuit, and a feedback signal is generated under the condition that the display screen is in a power-on state and the first display module is inserted into the target insertion area again; the target insertion area is an area where the display screen is in a power-on state and the second display module is pulled out of the box body; the control circuit generates an initialization signal according to the feedback signal, and sends the initialization signal to the driving circuit so as to indicate the driving circuit to perform initialization processing; the initialized driving circuit is used for driving the display module inserted into the box body to display, so that the whole box body does not need to be electrified again, and the lightening time of the display module inserted again is greatly shortened.

Description

Technical Field

[0001] The present application relates to the technical field of display screens, and in particular to a hot-swap control device, a display screen, and a display apparatus. Background Art

[0002] An LED display consists of an LED cabinet housing multiple LED modules, which are typically hot-swappable. In current LED displays, inserting another module into a cabinet that has been hot-swappable will cause the screen to go black. This typically requires powering the entire cabinet down before the display can illuminate. This lengthy power-up process can negatively impact the user experience. Summary of the Invention

[0003] Based on this, it is necessary to provide a hot-swap control device, a display screen and a display device.

[0004] In a first aspect, the present application provides a hot-swap control device, which is applied to a display screen, wherein the display screen includes a housing and a plurality of display modules, each of the display modules being detachably connected to the housing, and the hot-swap control device includes:

[0005] a detection circuit for detecting a connection status between the housing and each of the display modules, and generating a feedback signal when the display screen is powered on and the first display module is reinserted into a target insertion area; the target insertion area being an area when the display screen is powered on and the second display module is removed from the housing;

[0006] The control circuit is respectively connected to the detection circuit and the driving circuit of the display screen, and is used to generate an initialization signal according to the feedback signal and send the initialization signal to the driving circuit to instruct the driving circuit to perform initialization processing; the driving circuit is connected to the display module that has been inserted into the box, and the initialized driving circuit is used to drive the display module that has been inserted into the box to display.

[0007] In one embodiment, the detection circuit includes:

[0008] The detection module is configured with a plurality of detection pins; wherein, when the detection pins are connected to the display module inserted into the housing, the level signal of the detection pins is a first level signal; when the detection pins are not connected to the display module, the level signal of the detection pins is a second level signal; the first level signal and the second level signal are different;

[0009] The processing module is connected to the detection module and the control circuit respectively, and is used for generating the feedback signal when the level signal of each detection pin meets a preset initialization condition.

[0010] In one embodiment, the processing module is further configured to set the module status of the corresponding display module to a first flag when the level signal is the first level signal, and to set the module status bit of the corresponding display module to a second flag when the level signal is the second level signal;

[0011] The processing module is further configured to generate the feedback signal when the module status bit of any display module is the second flag and the level signal corresponding to the display module is the first level signal.

[0012] In one embodiment, the processing module is further configured to generate the feedback signal when the level signal of any detection pin is converted from the second level signal to the first level signal.

[0013] In one embodiment, the detection module further includes a plurality of detection units, each of the detection units includes at least a first resistor;

[0014] The first end of the first resistor is connected to the detection pin, and the second end of the first resistor is connected to the power supply; the first end of the first resistor is also used to connect to the display module inserted into the box.

[0015] In one embodiment, the initialization signal includes a reset signal and configuration information;

[0016] The control circuit is also connected to the reset circuit of the display screen, and the control circuit is further used to send the reset signal to the reset circuit to instruct the reset circuit to reset the drive circuit;

[0017] The control circuit is further configured to send the configuration information to the drive circuit to instruct the drive circuit to perform configuration processing after the reset processing.

[0018] In a second aspect, the present application further provides a display screen, comprising:

[0019] Box;

[0020] A plurality of display modules, each of the display modules being detachably connected to the housing;

[0021] The hot-swap control device provided by any of the above embodiments;

[0022] A driving circuit is connected to the display module inserted into the box and is used to perform initialization processing according to the initialization signal sent by the hot plug control device. The initialized driving circuit is used to drive the display module inserted into the box to display.

[0023] In one embodiment, the initialization signal includes a reset signal and configuration information;

[0024] The driving circuit includes multiple registers; the driving circuit is also used to receive the configuration information when receiving the reset signal, obtain register parameters according to the configuration information, and configure the multiple registers according to the register parameters to drive the display module inserted into the box to display.

[0025] In one embodiment, the display screen further includes a reset circuit; the reset circuit is connected to the hot-swap control device and is configured to reset the drive circuit according to the initialization signal.

[0026] In a third aspect, the present application also provides a display device, comprising the display screen provided by any of the above embodiments.

[0027] In the aforementioned hot-swap control device, display screen, and display device, the hot-swap control device includes a detection circuit and a control circuit. The detection circuit is configured to detect the connection status between the housing and each display module and generate a feedback signal when the display screen is powered on and the first display module is reinserted into the target insertion area. The control circuit is configured to generate an initialization signal based on the feedback signal and send the initialization signal to the driver circuit to instruct the driver circuit to perform initialization processing, thereby driving the display module inserted into the housing to display. The detection circuit detects whether a display module has been hot-swapped and then returned to the housing. If so, the control circuit sends an initialization signal to each driver circuit of the display screen to instruct the driver circuit to perform initialization processing, thereby driving the corresponding display module to operate. This eliminates the need to repower the entire housing, significantly shortening the lighting time of the reinserted display module and improving the user experience. Furthermore, when repairing the display screen, the shorter lighting time of the reinserted display module can save on-site work time and improve repair efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the conventional technology, the following briefly introduces the drawings required for use in the embodiments or the conventional technology descriptions. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0029] Figure 1 A block diagram of a hot-swap control device provided in one embodiment;

[0030] Figure 2 This is one of the structural block diagrams of a detection circuit in a hot-swap control device provided in one embodiment;

[0031] Figure 3 This is a second structural block diagram of a detection circuit in a hot-swap control device provided in an embodiment;

[0032] Figure 4 This is a third structural block diagram of a detection circuit in a hot-swap control device provided in an embodiment;

[0033] Figure 5 This is a structural block diagram of a reset circuit in a hot-swap control device provided by one embodiment.

[0034] Description of reference numerals:

[0035] 100-detection circuit, 110-detection module, 111-detection pin, 112-detection unit, 120-processing module, 200-control circuit, 300-display module, 400-drive circuit, 500-cabinet, 600-reset circuit. DETAILED DESCRIPTION

[0036] To facilitate understanding of the present application, the present application will be described more fully below with reference to the accompanying drawings. The accompanying drawings provide embodiments of the present application. However, the present application may be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to make the disclosure of the present application more thorough and comprehensive.

[0037] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application pertains. The terms used herein in the specification of this application are for the purpose of describing specific embodiments only and are not intended to limit this application.

[0038] It will be understood that the terms "first," "second," etc., used herein may be used to describe various elements, but these elements are not limited by these terms. These terms are only used to distinguish a first element from another element. For example, a first resistor may be referred to as a second resistor, and similarly, a second resistor may be referred to as a first resistor without departing from the scope of this application. The first resistor and the second resistor are both resistors, but they are not the same resistor.

[0039] It can be understood that the “connection” in the following embodiments should be understood as “electrical connection”, “communication connection”, etc. if there is transmission of electrical signals or data between the connected circuits, modules, units, etc.

[0040] It is understood that “at least one” refers to one or more, “a plurality” refers to two or more, and “at least a portion of an element” refers to a portion or all of an element.

[0041] As used herein, the singular forms "a," "an," and "the" may also include the plural forms, unless the context clearly indicates otherwise. It should also be understood that the terms "include," "comprising," "having," and the like specify the presence of stated features, integers, steps, operations, components, parts, or combinations thereof, but do not preclude the presence or addition of one or more other features, integers, steps, operations, components, parts, or combinations thereof. Furthermore, the term "and / or" as used in this specification includes any and all combinations of the relevant listed items.

[0042] The hot-swap control device provided in this application can be applied to a display screen. Figure 1 As shown, the display screen includes a housing 500 and multiple display modules 300, each of which is detachably connected to the housing 500. The display modules 300 may include one or more LED light panels. The display screen supports hot swapping, meaning that while the screen is powered on, a display module 300 can be removed from the housing 500 or inserted into the housing 500 without affecting normal operation of the screen.

[0043] In one embodiment, Figure 1 As shown, the hot-swap control device includes a detection circuit 100 and a control circuit 200. The detection circuit 100 and the control circuit 200 may also be disposed in a box 500.

[0044] The detection circuit 100 is used to detect the connection status between the housing 500 and each display module 300, and to generate a feedback signal when the display screen is powered on and the first display module is reinserted into the target insertion area. The target insertion area is the area where the display screen is powered on and the second display module is removed from the housing 500. The second display module is one or more of the multiple display modules 300 in the housing 500, and the first display module can be the removed second display module or a new display module. The feedback signal is used to indicate that a display module 300 has been hot-swapped and then placed back into the housing 500. The feedback signal can be a level signal or a software trigger signal.

[0045] The control circuit 200 is connected to the detection circuit 100 and the drive circuit 400 of the display screen respectively. The control circuit 200 can be integrated on the control card of the display screen. The control circuit 200 is used to generate an initialization signal based on the feedback signal and send the initialization signal to the drive circuit 400 to instruct the drive circuit 400 to perform an initialization process. The drive circuit 400 is connected to the display module 300 that has been inserted into the box 500. The initialized drive circuit 400 is used to drive the display module 300 that has been inserted into the box 500 to display. The initialization process of the drive circuit 400 includes a reset process and a configuration process of each register inside the drive circuit 400. One drive circuit 400 can be connected to one display module 300, or it can be connected to multiple display modules 300 at the same time. Different drive circuits 400 are connected to different display modules 300.

[0046] It can be understood that after the second display module is pulled out of the box 500, although the display screen is still in a powered-on state and other display modules that have not been pulled out are still operating normally, the driving circuit 400 connected to the unplugged second display module is in a powered-off state. Therefore, after the first display module is inserted, the control circuit 200 needs to send an initialization signal to the driving circuit 400 to initialize the driving circuit 400 to drive the display module 300 that has been inserted into the box 500 to display.

[0047] In an embodiment of the present application, the hot-swap control device includes a detection circuit 100 and a control circuit 200. The detection circuit 100 is configured to detect the connection status between the housing 500 and each display module 300 and generate a feedback signal when the display screen is powered on and the first display module is reinserted into the target insertion area. The control circuit 200 is configured to generate an initialization signal based on the feedback signal and send the initialization signal to the driver circuit 400, instructing the driver circuit 400 to perform initialization processing, thereby driving the display module 300 inserted into the housing 500 to display. The detection circuit 100 detects whether a display module 300 has been hot-swapped and then placed back into the housing 500. If so, the control circuit 200 sends an initialization signal to each driver circuit 400 of the display screen, instructing the driver circuit 400 to perform initialization processing and drive the corresponding display module 300 to operate. This eliminates the need to repower the entire housing 500, significantly shortening the lighting time of the reinserted display module 300 and improving the user experience. Furthermore, when repairing the display screen, the shorter lighting time of the reinserted display module 300 can save on-site work time and improve repair efficiency.

[0048] In one embodiment, Figure 2-Figure 4 As shown, the detection circuit 100 includes a detection module 110 and a processing module 120 .

[0049] The detection module 110 is configured with a plurality of detection pins 111. The detection pins 111 are used to connect to the display module 300 in the housing 500. By inserting the display module 300 into the housing 500, the connection between the display module 300 and the detection pins 111 can be achieved. In which, when the detection pin 111 is connected to the display module 300 inserted into the housing 500, the level signal of the detection pin 111 is a first level signal; when the pin of the detection unit 112 is not connected to the display module 300, the level signal of the detection pin 111 is a second level signal. The first level signal and the second level signal are different. For example, the first level signal can be a high level signal, and the second level signal can be a low level signal. Optionally, the first level signal can be a low level signal, and the second level signal can be a high level signal.

[0050] The processing module 120 is connected to the detection module 110 and the control circuit 200, respectively. The processing module 120 is configured to generate a feedback signal when the level signal of each detection pin 111 meets a preset initialization condition. The preset initialization condition is used to indicate that the display module 300 is reinserted into the housing 500 when the display screen is powered on.

[0051] Furthermore, the processing module 120 is further configured to set the module status of the corresponding display module 300 to a first flag when the level signal is a first level signal, and to set the module status bit of the corresponding display module 300 to a second flag when the level signal is a second level signal. Exemplarily, the first flag may be 1, and the second flag may be 0. Alternatively, the first flag may be 0, and the second flag may be 1.

[0052] The preset initialization condition can be that the module status bit of any display module 300 is the second identifier, and the level signal corresponding to the display module 300 is the first level signal. That is, the processing module 120 is also used to generate a feedback signal when the module status bit of any display module 300 is the second identifier, and the level signal corresponding to the display module 300 is the first level signal. It can be understood that the detection module 110 detects the connection status of each display module 300 and the box 500 in real time, and feeds back the connection status to the processing module 120 in real time. When the module status bit of the display module 300 is the second identifier, the processing module 120 determines whether the level signal of the corresponding detection pin 111 is the second level signal. If the level signal of the corresponding detection pin 111 is the first level signal, a feedback signal is generated, and the module status bit of the display module 300 is updated to the first identifier; if the level signal of the corresponding detection pin 111 is the second level signal, no processing is performed. When the module status bit of the display module 300 is the first identifier, the processing module 120 determines whether the level signal of the corresponding detection pin 111 is the first level signal. If the level signal of the corresponding detection pin 111 is the first level signal, no processing is performed; if the level signal of the corresponding detection pin 111 is the second level signal, the module status bit of the display module 300 is updated to the second identifier, and no feedback signal is generated.

[0053] Optionally, the preset initialization condition may be that the level signal of any detection pin 111 is converted from the second level signal to the first level signal. That is, the processing module 120 is further configured to generate a feedback signal when the level signal of any detection pin 111 is converted from the second level signal to the first level signal.

[0054] In one embodiment, the detection module 110 further includes a plurality of detection units 112. Figure 2 As shown, the detection unit 112 includes a first resistor R1, a first end of the first resistor R1 is connected to the detection pin 111, and a second end of the first resistor is connected to the power supply VCC. The first end of the first resistor R1 is also used to connect to the display module 300 inserted into the housing 500. When the display module 300 is connected to the detection pin 111, the detection pin 111 is grounded, and the level signal at the detection pin 111 is a low-level signal; when the detection pin 111 is not connected to the display module 300, the detection pin 111 is connected to the power supply VCC, and the level signal at the detection pin 111 is a high-level signal.

[0055] Alternatively, in one embodiment, Figure 3As shown, the detection unit 112 includes a first resistor R1 and a second resistor R2, wherein the first end of the first resistor R1 and the first end of the second resistor R2 are connected at two levels, the second end of the first resistor R1 is connected to the power supply VCC, and the second end of the second resistor R2 is connected to the detection pin 111. The first end of the first resistor R1 is also used to connect to the display module 300 inserted into the housing 500. When the display module 300 is connected to the detection pin 111, the detection pin 111 is grounded, and the level signal at the detection pin 111 is a low-level signal; when the detection pin 111 is not connected to the display module 300, the detection pin 111 is connected to the power supply VCC, and the level signal at the detection pin 111 is a high-level signal.

[0056] Alternatively, in one embodiment, Figure 4 As shown, the detection unit 112 may include a first resistor R1, a second resistor R2, a diode D1 and a transient voltage suppressor TVS1.

[0057] The first end of the first resistor R1 is connected to the first end of the second resistor R2 and the anode of the diode D1, respectively. The second end of the first resistor R1 is connected to the power supply VCC, the second end of the second resistor R2 is connected to the detection pin 111, and the cathode of the diode D1 is connected to the cathode of the transient voltage suppressor (TVS1), which is grounded. The cathode of the diode D1 is connected to the display module 300 inserted into the housing 500. When the display module 300 is connected to the detection pin 111, the detection pin 111 is grounded, and the level signal at the detection pin 111 is a low-level signal. When the detection pin 111 is not connected to the display module 300, the detection pin 111 is connected to the power supply VCC, which is a high-level signal. The diode D1 acts as a level isolation device, preventing the power supply VCC from being directly short-circuited to ground through the first resistor R1. The transient voltage suppressor (TVS1) can be used to clamp high-voltage pulses.

[0058] In one embodiment, the initialization signal includes a reset signal and configuration information.

[0059] like Figure 5 As shown, the control circuit 200 is also connected to the reset circuit 600 of the display screen. The control circuit 200 is also used to send a reset signal to the reset circuit 600 to instruct the reset circuit 600 to reset the driving circuit 400. The control circuit 200 is also used to send configuration information to the driving circuit 400 to instruct the reset circuit 400 to perform a configuration process after the reset process.

[0060] The reset circuit 600 receives a reset signal from the control circuit 200 and transmits the reset signal to each driver circuit 400 to reset each driver circuit 400. For example, the reset circuit 600 may be an HC245 IC, with its input connected to the control circuit 200 and its output connected one-to-one with each driver circuit 400. The driver circuit 400 includes multiple registers. Only after the driver circuit 400 has completed a reset will it receive configuration information from the control circuit 200 and configure the registers based on this information. Only then can the driver circuit 400 drive the display module 300 to display.

[0061] In addition, each display module 300 in the box 500 may need to be displayed in sequence according to a specific timing. Therefore, in this embodiment, after receiving the feedback signal sent by the detection circuit 100, the control circuit 200 will send an initialization signal to all the driving circuits 400 to initialize all the driving circuits 400 in the display screen.

[0062] Based on the same inventive concept, the present application also provides a display screen, such as Figure 1 As shown, it includes a box 500, multiple display modules 300, a hot-swap control device and a driving circuit 400.

[0063] Each display module 300 is detachably connected to the housing 500. The hot-swap control device can be found in the description of the hot-swap control device provided in any of the above embodiments and will not be further described here. The drive circuit 400 is connected to the display module 300 inserted into the housing 500. The drive circuit 400 is configured to perform initialization processing based on an initialization signal sent by the hot-swap control device. After initialization, the drive circuit 400 is configured to drive the display module 300 inserted into the housing 500 to display.

[0064] In the embodiment of the present application, since the hot-swap control device can send an initialization signal to each driver circuit 400 of the display screen when the display module 300 is hot-swapped and placed back into the housing 500, instructing the driver circuit 400 to perform initialization processing and drive the corresponding display module 300 to operate, it is no longer necessary to repower the entire housing 500. This greatly shortens the lighting time of the reinserted display module 300 and improves the user experience. In addition, when repairing the display screen, the shorter lighting time of the reinserted display module 300 can save on-site work time and improve repair efficiency.

[0065] In one embodiment, the initialization signal includes a reset signal and configuration information.

[0066] The driver circuit 400 includes multiple registers. Upon receiving a reset signal, the driver circuit 400 is further configured to receive configuration information, obtain register parameters based on the configuration information, and configure the multiple registers based on the register parameters to drive the display module 300 inserted into the housing 500 for display. It will be appreciated that only after the driver circuit 400 completes a reset will it receive configuration information from the control circuit 200 and complete register configuration based on this configuration information before driving the display module 300 for display.

[0067] In one embodiment, the display screen further includes a reset circuit 600. The reset circuit 600 is connected to the hot-swap control device and is configured to reset the driving circuit 400 according to the initialization signal.

[0068] Based on the same inventive concept, in one embodiment, the present application further provides a display device, which includes the display screen provided by any of the above embodiments. The display device can be a television, a tablet, a personal computer, etc.

[0069] In the description of this specification, reference to the terms "some embodiments" or "other embodiments" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic descriptions of the above terms do not necessarily refer to the same embodiment or example.

[0070] The technical features of the above embodiments can be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0071] The above embodiments merely illustrate several embodiments of the present application. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present application. It should be noted that a person of ordinary skill in the art may make various modifications and improvements without departing from the spirit of the present application, all of which fall within the scope of protection of the present application. Therefore, the scope of protection of the present application shall be determined by the appended claims.

Claims

1. A hot-swap control device, characterized in that: Applied to a display screen, the display screen includes a box and multiple display modules, each of the display modules is detachably connected to the box, and the hot-swap control device includes: a detection circuit for detecting a connection status between the housing and each of the display modules, and generating a feedback signal when the display screen is powered on and the first display module is reinserted into a target insertion area; the target insertion area being an area when the display screen is powered on and the second display module is removed from the housing; The control circuit is respectively connected to the detection circuit and the driving circuit of the display screen, and is used to generate an initialization signal according to the feedback signal and send the initialization signal to the driving circuit to instruct the driving circuit to perform initialization processing; the driving circuit is connected to the display module that has been inserted into the box, and the initialized driving circuit is used to drive the display module that has been inserted into the box to display.

2. The hot-swap control device according to claim 1, wherein: The detection circuit comprises: The detection module is configured with a plurality of detection pins; wherein, when the detection pins are connected to the display module inserted into the housing, the level signal of the detection pins is a first level signal; when the detection pins are not connected to the display module, the level signal of the detection pins is a second level signal; the first level signal and the second level signal are different; The processing module is connected to the detection module and the control circuit respectively, and is used for generating the feedback signal when the level signal of each detection pin meets a preset initialization condition.

3. The hot-swap control device according to claim 2, wherein: The processing module is further configured to set the module status of the corresponding display module to a first flag when the level signal is the first level signal, and to set the module status bit of the corresponding display module to a second flag when the level signal is the second level signal; The processing module is further configured to generate the feedback signal when the module status bit of any display module is the second flag and the level signal corresponding to the display module is the first level signal.

4. The hot-swap control device according to claim 2, wherein: The processing module is further configured to generate the feedback signal when the level signal of any detection pin is converted from the second level signal to the first level signal.

5. The hot-swap control device according to any one of claims 2 to 4, characterized in that: The detection module further includes a plurality of detection units, each of the detection units including at least a first resistor; The first end of the first resistor is connected to the detection pin, the second end of the first resistor is connected to the power supply, and the first end of the first resistor is also used to connect to the display module inserted into the box.

6. The hot-swap control device according to any one of claims 1 to 4, characterized in that: The initialization signal includes a reset signal and configuration information; The control circuit is also connected to the reset circuit of the display screen, and the control circuit is further used to send the reset signal to the reset circuit to instruct the reset circuit to reset the drive circuit; The control circuit is further configured to send the configuration information to the drive circuit to instruct the drive circuit to perform configuration processing after the reset processing.

7. A display screen, characterized in that: include: Box; A plurality of display modules, each of the display modules being detachably connected to the housing; The hot-swap control device according to any one of claims 1 to 6; A driving circuit is connected to the display module inserted into the box and is used to perform initialization processing according to the initialization signal sent by the hot plug control device. The initialized driving circuit is used to drive the display module inserted into the box to display.

8. The display screen according to claim 7, characterized in that The initialization signal includes a reset signal and configuration information; The driving circuit includes multiple registers; the driving circuit is also used to receive the configuration information when receiving the reset signal, obtain register parameters according to the configuration information, and configure the multiple registers according to the register parameters to drive the display module inserted into the box to display.

9. The display screen according to claim 7 or 8, characterized in that: The display screen further includes a reset circuit; the reset circuit is connected to the hot-swap control device and is used to reset the drive circuit according to the initialization signal.

10. A display device, characterized in that: Comprising the display screen according to any one of claims 7 to 9.

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