LED backlight display system

Abstract

This invention provides a light-emitting diode (LED) backlight display system, comprising: an image processing unit, a first driving unit, a second driving unit, and a multi-channel readback unit. The image processing unit includes a readback interface, and both the first and second driving units include LEDs. The first driving unit detects the LEDs to obtain first detection information and sends the first detection information to the multi-channel readback unit. The second driving unit detects the LEDs to obtain second detection information and sends the second detection information to the multi-channel readback unit. The multi-channel readback unit receives and determines target information based on the first and second detection information and sends the target information to the image processing unit. The image processing unit reads back the target information through the readback interface, thereby achieving the purpose of the image processing unit reading back the detection information of multiple driving paths through a single readback interface, and improving the information transmission efficiency of the multiple driving paths.

Description

Technical Field

[0001] This invention relates to the field of computer technology, and more particularly to a light-emitting diode backlight display system. Background Technology

[0002] Existing light-emitting diode (LED) backlight display systems are divided into two types: those directly driven by an image processing unit and those processed by an image processing unit and then driven by a drive control unit. The LED backlight display system directly driven by an image processing unit includes an image processing unit and a single drive unit path. The image processing unit includes a readback interface, and the single drive unit path includes at least one drive unit. The drive unit detects the detection information obtained from the LED and sends the detection information to the image processing unit; the image processing unit reads back the detection information through the readback interface.

[0003] However, since the image processing unit only has one readback interface, and the readback interface can only read back the detection information sent by the driving unit on a single driving unit path, it cannot read back the detection information sent by the driving unit on multiple driving paths. This makes it difficult for the LED backlight display system driven by the image processing unit to meet the requirement of the image processing unit to read back the detection information sent by the driving unit on multiple driving paths through a single readback interface. Summary of the Invention

[0004] This invention provides a light-emitting diode backlight display system with two driving paths, enabling the image processing unit to read back the detection information of multiple driving paths through a single readback interface. This satisfies the requirement of the image processing unit to read back the detection information sent by the driving units of multiple driving paths through a single readback interface, improves the information transmission efficiency of multiple driving paths, and increases the flexibility of information transmission in the LED backlight display system.

[0005] This invention provides a light-emitting diode backlight display system, the system comprising:

[0006] The system comprises an image processing unit, a first driving unit, a second driving unit, and a multi-channel readback unit. The image processing unit includes a readback interface. The first driving unit belongs to a first driving path, and the second driving unit belongs to a second driving path. Both the first driving unit and the second driving unit include light-emitting diodes (LEDs).

[0007] The first driving unit is used to detect the light-emitting diode to obtain first detection information, and send the first detection information to the multiplex readback unit;

[0008] The second driving unit is used to detect the light-emitting diode to obtain second detection information, and send the second detection information to the multiplex readback unit;

[0009] The multi-channel readback unit is used to receive the first detection information and the second detection information, determine the target information based on the first detection information and the second detection information, and send the target information to the image processing unit;

[0010] The image processing unit is used to read back the target information through the readback interface.

[0011] In the above embodiments, the first detection information includes a first voltage, the second detection information includes a second voltage, and the multiplex readback unit is specifically used to determine that the target information is low level when the first voltage / second voltage is low, and to determine that the target information is high level when both the first voltage and the second voltage are high.

[0012] In the above embodiments, the multi-channel readback unit includes a first readback pin, a second readback pin, and an AND gate. Specifically, the multi-channel readback unit is used to determine that the target information is at a low level when the first voltage / second voltage is low, and to determine that the target information is at a high level when both the first voltage and the second voltage are high. This includes: reducing the level of the readback pin with the received low voltage to a low level using the AND gate, and performing an AND operation on the first readback pin and the second readback pin based on their respective levels to output a low level, thus determining that the target information is at a low level; and when both the first voltage and the second voltage are high, raising the level of the first readback pin and the second readback pin to a low level using the AND gate, and performing an AND operation on the first readback pin and the second readback pin based on their respective levels to output a high level, thus determining that the target information is at a high level.

[0013] In the above embodiments, the image processing unit further includes a control power supply. Specifically, the image processing unit is used to determine a feedback voltage based on the target information and adjust the voltage of the control power supply to the feedback voltage.

[0014] In the above embodiments, the image processing unit is specifically used to determine the feedback voltage based on the target information and adjust the voltage of the control power supply to the feedback voltage, including: determining the feedback voltage to be low and adjusting the voltage of the control power supply to be low when the target information is low, and determining the feedback voltage to be high and adjusting the voltage of the control power supply to be high when the target information is high.

[0015] In the above embodiments, the first detection information further includes first communication information, the second detection information further includes second communication information, and the multi-channel readback unit is specifically used to determine the target information based on the first communication information and the second communication information.

[0016] In the above embodiments, the multi-channel readback unit is further specifically used to determine the target information based on the first communication information and the second communication information, including: raising the level of the first readback pin to a high level and lowering the level of the second readback pin to a low level through the AND gate, so that the first readback pin receives the first communication information and sends the first communication information to the AND gate, and determining the first communication information as the target information through the AND gate; or, lowering the level of the first readback pin to a low level and raising the level of the second readback pin to a high level through the AND gate, so that the second readback pin receives the second communication information and sends the second communication information to the AND gate, and determining the second communication information as the target information through the AND gate.

[0017] In the above embodiments, the first communication information includes a first address and a first current brightness of the light-emitting diode corresponding to the first address, and the second communication information includes a second address and a second current brightness of the light-emitting diode corresponding to the second address. The image processing unit is further specifically configured to determine the first preset brightness as the first target brightness of the light-emitting diode when the first current brightness and the first preset brightness corresponding to the first address are different, and send the first target brightness and the first address to the first driving unit; and to determine the second preset brightness as the second target brightness of the light-emitting diode when the second current brightness and the second preset brightness corresponding to the second address are different, and send the second target brightness to the second driving unit.

[0018] In the above embodiments, the first driving unit is further configured to adjust the first current brightness of the light-emitting diode corresponding to the first address to the first target brightness; the second driving unit is further configured to adjust the second current brightness of the light-emitting diode corresponding to the second address to the second target brightness.

[0019] In the above embodiments, the first communication information further includes a first current temperature corresponding to the first address, and the second communication information further includes a second current temperature corresponding to the second address. The image processing unit is further specifically configured to determine the first preset temperature as the first target temperature of the light-emitting diode when the first current temperature and the first preset temperature corresponding to the first address are different, and send the first target temperature and the first address to the first driving unit; and to determine the second target temperature of the light-emitting diode when the second current temperature and the second preset temperature corresponding to the second address are different, and send the second target temperature and the second address to the second driving unit.

[0020] In the above embodiments, the first driving unit is further configured to adjust the first current temperature corresponding to the first address to the first target temperature; the second driving unit is further configured to adjust the second current temperature corresponding to the second address to the second target temperature.

[0021] In the above embodiments, the first detection information further includes first anomaly report information, the second detection information further includes second anomaly report information, and the image processing unit is further configured to generate an anomaly handling prompt based on the first anomaly report information and / or the second anomaly report information.

[0022] The LED backlight display system provided by this invention includes: an image processing unit, a first driving unit, a second driving unit, and a multi-channel readback unit. The image processing unit includes a readback interface. The first driving unit belongs to a first driving path, and the second driving unit belongs to a second driving path. Both the first driving unit and the second driving unit include LEDs. The first driving unit is used to detect the LEDs in the first driving path to obtain first detection information and send the first detection information to the multi-channel readback unit. The second driving unit is used to detect the LEDs in the second driving path to obtain second detection information and send the second detection information to the multi-channel readback unit. The multi-channel readback unit is used to receive the first and second detection information, determine target information based on the first and second detection information, and send the target information to the image processing unit. The image processing unit is used to read back the target information through the readback interface. Therefore, compared with the prior art, the LED backlight display system provided by the present invention has two driving paths, and the detection information of the driving units of both driving paths can be used by a multi-path readback unit to determine the target information that the image processing unit needs to read back. Then, the multi-path readback unit sends the target information to the image processing unit, and the image processing unit reads back the target information through the readback interface. That is, the multi-path readback unit determines the target information based on the detection information sent by the driving units of the multiple driving paths and sends the target information to the image processing unit. The image processing unit reads back the target information corresponding to the detection information of the multiple driving paths through the readback interface, which is equivalent to the image processing unit reading back the target information of the multiple driving paths through a single readback interface. The target information corresponding to the detection information sent by the driving unit enables the image processing unit to read back the detection information of multiple driving paths through a single readback interface. This satisfies the requirement of the image processing unit to read back the detection information sent by the driving units of multiple driving paths through a single readback interface, improves the information transmission efficiency of multiple driving paths, increases the flexibility of information transmission in the LED backlight display system, and solves the problem that the LED backlight display system driven by the image processing unit cannot meet the requirement of the image processing unit to read back the detection information sent by the driving units of multiple driving paths through a single readback interface because the image processing unit can only read back the detection information sent by the driving units of a single driving path through a readback interface. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1This is a schematic diagram of a light-emitting diode backlight display system provided in an embodiment of the present invention;

[0025] Figure 2 This is a schematic diagram of a multi-channel readback unit in a light-emitting diode backlight display system provided in an embodiment of the present invention;

[0026] Figure 3 This is another structural schematic diagram of the LED backlight display system provided in an embodiment of the present invention;

[0027] Figure 4 This is another structural schematic diagram of the LED backlight display system provided in the embodiment of the present invention;

[0028] Figure 5 This is another structural schematic diagram of the multi-channel readback unit in the LED backlight display system provided in the embodiments of the present invention;

[0029] Figure 6 This is another structural schematic diagram of a multi-channel readback unit in a light-emitting diode backlight display system provided in an embodiment of the present invention. Detailed Implementation

[0030] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0031] The terms “first,” “second,” “third,” “fourth,” etc. (if present) in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that embodiments of the invention described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms “comprising” and “having,” and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0032] The technical solution of the present invention will be described in detail below with reference to specific embodiments. These specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described again in some embodiments.

[0033] Figure 1This is a schematic diagram of a light-emitting diode backlight display system provided in an embodiment of the present invention. Figure 1 As shown, the LED backlight display system provided by the present invention includes: an image processing unit 100, a first driving unit 110, a second driving unit 120, and a multi-channel readback unit 130. The image processing unit 100 includes a readback interface 1001. The first driving unit 110 belongs to a first driving path, and the second driving unit 120 belongs to a second driving path. Both the first driving unit 110 and the second driving unit 120 include LEDs 1101. The first driving unit 110 is used to detect the LEDs 1101 in the first driving path to obtain first detection information and send the first detection information to the multi-channel readback unit 130. The second driving unit 120 is used to detect the LEDs 1101 in the second driving path to obtain second detection information and send the second detection information to the multi-channel readback unit 130. The multi-channel readback unit 130 is used to receive the first and second detection information, determine target information based on the first and second detection information, and send the target information to the image processing unit 100. The image processing unit 100 is used to read back the target information through the readback interface 1001.

[0034] Here, the readback interface 1001 can be understood as a signal interface used to receive information; the first detection information can be understood as the detection information obtained by the first driving unit 110 from detecting the light-emitting diode 1101; the second detection information can be understood as the detection information obtained by the second driving unit 120 from detecting the light-emitting diode 1101. The target information can be understood as the information determined based on the first detection information and the second detection information.

[0035] like Figure 2 As shown, the multi-channel readback unit 130 may include a first readback pin 1301 and a second readback pin 1302. The first readback pin 1301 can be used to receive the first detection information of the first driving path, and the second readback pin 1302 is used to receive the second detection information of the second driving path.

[0036] In one optional implementation, the multi-channel readback unit 130 can receive first detection information through the first readback pin 1301 and second detection information through the second readback pin 1302, determine target information based on the first and second detection information, and send the target information to the image processing unit 100; the image processing unit 100 reads back the target information through the readback interface 1001.

[0037] For example, the first driving unit 110 detects the light-emitting diode 1101 to obtain first detection information S1, and sends the first detection information S1 to the multiplex readback unit 130; the second driving unit 120 detects the light-emitting diode 1101 to obtain first detection information S2, and sends the first detection information S2 to the multiplex readback unit 130; the multiplex readback unit 130 receives the first detection information S1 through the first readback pin 1301, receives the second detection information S2 through the second readback pin 1302, determines the target information T based on the first detection information S1 and the second detection information S2, and sends the target information T to the image processing unit 100; the image processing unit 100 reads back the target information T through the readback interface 1001.

[0038] In one alternative implementation, such as Figure 3 As shown, the first driving path may include multiple first driving units 110, each first driving unit 110 including a light-emitting diode 1101; the second driving path may include multiple second driving units 120, each second driving unit 120 including a light-emitting diode 1101; each first driving unit 110 may be used to detect the light-emitting diode 1101 to obtain first detection information and send the first detection information to the multiplex readback unit 130; each second driving unit 120 may be used to detect the light-emitting diode 1101 to obtain second detection information and send the second detection information to the multiplex readback unit 130; the multiplex readback unit 130 may be used to receive the first detection information through the first readback pin 1301 and the second detection information through the second readback pin 1302, determine target information based on the first and second detection information, and send the target information to the image processing unit 100; the image processing unit 100 may be used to read back the target information through the readback interface 1001.

[0039] In a specific embodiment of the present invention, the first detection information includes a first voltage, and the second detection information includes a second voltage. The multiplexer unit 130 is specifically used to determine that the target information is at a low level when the first voltage / second voltage is low, and to determine that the target information is at a high level when both the first voltage and the second voltage are high. The first voltage can be understood as the voltage of the first driving power supply on the first driving path obtained by the first driving unit 110 from the light-emitting diode 1101, and the second voltage can be understood as the voltage of the second driving power supply on the second driving path obtained by the second driving unit 120 from the light-emitting diode 1101. The first driving power supply can be understood as the power supply used to power the first driving unit 110, and the second driving power supply can be understood as the power supply used to power the second driving unit 120.

[0040] like Figure 2As shown, the multi-channel readback unit 130 may include an AND gate 1311, which is connected to the first readback pin 1301 and the second readback pin 1302 respectively. The AND gate 1311 can be used to receive the first detection information sent by the first readback pin 1301 and the second detection information sent by the second readback pin 1302, and determine the target information based on the first detection information and the second detection information. The AND gate 1311 can be understood as a basic logic gate circuit that performs the "AND" operation.

[0041] In an LED backlight display system, when the voltage fed back from the driving unit is low, the driving voltage of the power supply supplying the driving unit needs to be increased by decreasing the feedback voltage. This ensures that the voltage of the light-emitting diodes 1101 in each driving unit's path reaches a preset voltage. The preset voltage can be understood as a preset voltage of the light-emitting diodes 1101, and the feedback voltage can be understood as the voltage of the control power supply supplying the image processing unit 100. For the LED backlight display system with multiple driving paths in this embodiment, when the voltage of any driving path is low, the multi-path readback unit 130 can output a low level. The image processing unit 100 then determines to decrease the feedback voltage to a low level based on the low level, thus increasing the driving voltage of the driving unit. When the voltage of each driving path is high, the multi-path readback unit 130 can output a high level. The image processing unit 100 then determines to increase the feedback voltage to a high level based on the high level, thus increasing the feedback voltage and decreasing the driving voltage of the driving unit.

[0042] In one optional implementation, the multiplexer unit 130 can receive the first voltage of the first driving path through the first readback pin 1301 and send the first voltage to AND gate 1311 through the first readback pin 1301; it can also receive the second voltage of the second driving path through the second readback pin 1302 and send the second voltage to AND gate 1311 through the second readback pin 1302; when the first voltage / second voltage is low, the multiplexer unit 130 reduces the level of the first readback pin 1301 to a low level through AND gate 1311, and reduces the level of the second readback pin 1302 to a low level through AND gate 1311. 01 / When the level of the second read-back pin 1302 is low, after the AND operation of AND gate 1311, the multiplex read-back unit 130 outputs a low level through AND gate 1311, determining the target information as low, and sends the target information to the image processing unit 100. The image processing unit 100 can determine the feedback voltage as low based on the target information (low level); when both the first voltage and the second voltage are high, the multiplex read-back unit 130 raises the level of the first read-back pin 1301 to high through AND gate 1311, and raises the level of the second read-back pin 1302 to high through AND gate 1311, thus establishing a low level for the first read-back pin 1301 / second read-back pin 1302. When all pins 1302 are at a high level, after the AND operation of AND gate 1311, the multi-channel readback unit 130 outputs a high level through AND gate 1311, confirming the target information as high. The target information is then sent to the image processing unit 100. The image processing unit 100 can determine the feedback voltage to be high based on the target information (high level). This allows it to adjust the driving voltage of the power supply to the driving unit by lowering / raising the feedback voltage when the voltage fed back from the driving unit is low. This ensures that the voltage of the LEDs 1101 in each driving unit's path reaches the preset voltage, thus ensuring the LED backlight display system with multiple driving paths reaches its preset voltage. The normal transmission of voltage information obtained by the driving unit in the drive path enables the image processing unit 100 to adjust the voltage of the control power supply in real time according to the target information, which greatly reduces the overall power consumption of the LED backlight display system. In the LED backlight display system with multiple driving paths, the voltage information obtained by the driving unit in the drive path is the interrupt feedback signal of the LED backlight display system in interrupt mode. Therefore, it is equivalent to realizing the normal transmission of the interrupt feedback signal of the LED backlight display system with multiple driving paths in interrupt mode, and improving the transmission efficiency of the interrupt feedback signal of the LED backlight display system with multiple driving paths.

[0043] Table 1 Truth table of AND operation corresponding to AND gate 1311

[0044] DO1 DO2 OUT 0 0 0 0 1 0 1 0 0 1 1 1

[0045] Table 1 is the truth table of the AND operation corresponding to AND gate 1311 in the embodiment of the present invention. In the table, low level is represented by 0, high level is represented by 1, DO1 represents the first readback pin 1301, DO2 represents the second readback pin 1302, and OUT represents the output level of AND gate 1311. As can be seen from Table 1, when DO1 is 0 and DO2 is 0, the value of OUT is 0, that is, the output level of AND gate 1311 is low level; when DO1 is 1 and DO2 is 1, the value of OUT is 1, that is, the output level of AND gate 1311 is high level.

[0046] For example, the first voltage is a low voltage and the second voltage is a high voltage; the first driving unit 110 detects the voltage of the light-emitting diode 1101 to obtain the first voltage, and when the first voltage is less than a preset voltage, it determines the first voltage as a low voltage and sends the first voltage to the multiplexed readback unit 130; the second driving unit 120 is specifically used to detect the voltage of the light-emitting diode 1101 to obtain the second voltage, and when the second voltage is greater than the preset voltage, it determines the second voltage as a high voltage and sends the second voltage to the multiplexed readback unit 130. The multi-channel readback unit 130 can receive the first voltage of the first driving path through the first readback pin 1301 and send the first voltage to AND gate 1311 through the first readback pin 1301; it can also receive the second voltage of the second driving path through the second readback pin 1302 and send the second voltage to AND gate 1311 through the second readback pin 1302; the multi-channel readback unit 130 reduces the level of the first readback pin 1301 to a low level "0" through AND gate 1311 and reduces the level of the second readback pin 1302 to a low level "0" through AND gate 1311. When the levels of the first readback pin 1301 and the second readback pin 1302 are low, after the AND operation of AND gate 1311, the multi-channel readback unit 130 outputs a low level "0" through AND gate 1311, thus determining the target information as a low level.

[0047] In a specific embodiment of the present invention, the image processing unit 100 further includes a control power supply, which is used to supply power to the image processing unit 100. Specifically, the image processing unit 100 is used to determine the feedback voltage based on the target information and adjust the voltage of the control power supply to the feedback voltage. This ensures that the image processing unit 100 adjusts the voltage of the control power supply in real time according to the target information, and ensures that the voltage of the light-emitting diodes 1101 in the path where each driving unit is located is kept at the same voltage as the preset voltage in a timely manner, which greatly reduces the overall energy consumption of the LED backlight display system.

[0048] Since increasing the feedback voltage can reduce the voltage of the LED 1101 in each driving unit's path, and decreasing the feedback voltage can increase the voltage of the LED 1101 in each driving unit's path, in an optional embodiment, the image processing unit 100 can determine that the feedback voltage is low and adjust the control power supply voltage to low when the target information is low, and determine that the feedback voltage is high and adjust the control power supply voltage to high when the target information is high. This ensures that the image processing unit 100 in the LED backlight display system with multiple driving paths can adjust the control power supply voltage in real time according to the target information, ensuring that the voltage of the LED 1101 in each driving unit's path remains the same as the preset voltage, thus greatly reducing the overall power consumption of the LED backlight display system.

[0049] For example, the first voltage is a low voltage and the second voltage is a high voltage. The target information determined by the first voltage and the second voltage is a low level. When the target information is a low level, the image processing unit 100 determines that the feedback voltage is a low voltage and adjusts the voltage of the control power supply to a low voltage, thereby ensuring that the first voltage of the light-emitting diode 1101 in the path detected by the first driving unit 110 reaches the preset voltage.

[0050] In a specific embodiment of the present invention, the first detection information further includes first communication information, and the second detection information further includes second communication information. The multi-channel readback unit 130 is further specifically used to determine target information based on the first communication information and the second communication information. The first communication information can be understood as the communication information obtained by the first driving unit 110 from detecting the light-emitting diode 1101, and the second communication information can be understood as the communication information obtained by the second driving unit 120 from detecting the light-emitting diode 1101.

[0051] When the level of the first read-back pin 1301 is high, the multiplex read-back unit 130 can receive the first detection information through the first read-back pin 1301; when the level of the first read-back pin 1301 is low, the multiplex read-back unit 130 cannot receive the first detection information through the first read-back pin 1301. When the level of the second read-back pin 1302 is high, the multiplex read-back unit 130 can receive the second detection information through the second read-back pin 1302; when the level of the second read-back pin 1302 is low, the multiplex read-back unit 130 cannot receive the second detection information through the second read-back pin 1302.

[0052] Therefore, in one optional implementation, when the multiplex readback unit 130 receives the first communication information and the second communication information, it can raise the level of the first readback pin 1301 and lower the level of the second readback pin 1302 through AND gate 1311. This causes the first readback pin 1301 to receive the first communication information and send it to AND gate 1311. Then, AND gate 1311 determines the first communication information as target information and sends the target information to the image processing unit 100. Next, AND gate 1311 lowers the level of the first readback pin 1301 and raises the level of the second readback pin 1302. This causes the second readback pin 1302 to receive the second communication information and send it to AND gate 1311. Then, AND gate 1311 determines the second communication information as target information and sends the target information to the image processing unit 100. Unit 100 then lowers the level of the second readback pin 1302 through AND gate 1311. This enables the image processing unit 100 to read back the communication information of multiple drive paths through a readback interface 1001, thus meeting the requirement of the image processing unit 100 to read back the communication information sent by the drive units of multiple drive paths through a readback interface 1001. This improves the information transmission efficiency of multiple drive paths, increases the flexibility of information transmission in the LED backlight display system, and solves the problem that the LED backlight display system driven by the image processing unit 100 cannot meet the requirement of the image processing unit 100 to read back the communication information sent by the drive units of multiple drive paths through a readback interface 1001 because the image processing unit 100 can only read back the communication information sent by the drive units of a single drive path through the readback interface 1001.

[0053] In a specific embodiment of the present invention, the first communication information includes a first address and the first current brightness of the LED 1101 corresponding to the first address; the second communication information includes a second address and the second current brightness of the LED 1101 corresponding to the second address. The image processing unit 100 is specifically configured to, when the first current brightness and the first preset brightness corresponding to the first address are different, determine the first preset brightness as the first target brightness of the LED 1101, and send the first target brightness and the first address to the first driving unit 110. The first driving unit 110 is further configured to adjust the first current brightness of the LED 1101 corresponding to the first address to the first target brightness; and when the second current brightness and the second preset brightness corresponding to the second address are different, determine the second preset brightness as the second target brightness of the LED 1101, and send the second target brightness to the second driving unit 120. The second driving unit 120 is further configured to adjust the second current brightness of the LED 1101 corresponding to the second address to the second target brightness. This allows the image processing unit 100 to adjust the brightness according to the communication information. The brightness information (first current brightness and second current brightness) in the data is used to determine the target brightness information (first target brightness and second target brightness) in real time, and the target brightness information is sent to the driving unit through the output interface. The driving unit adjusts the brightness of the light-emitting diode 1101 to the target brightness in a timely manner, reducing the overall power consumption of the LED backlight display system. In addition, it enables the image processing unit 100 to read back the brightness information of multiple driving paths through a readback interface 1001, which meets the requirement of the image processing unit 100 to read back the brightness information sent by the driving units of multiple driving paths through a readback interface 1001, improves the information transmission efficiency of multiple driving paths, increases the flexibility of information transmission of the LED backlight display system, and solves the problem that the LED backlight display system driven by the image processing unit 100 cannot meet the requirement of the image processing unit 100 to read back the brightness information sent by the driving units of multiple driving paths through a readback interface 1001 because the image processing unit 100 can only read back the brightness information sent by the driving units of a single driving path through the readback interface 1001.

[0054] Wherein, the first address can be understood as the address of the light-emitting diode 1101 in the first driving unit 110, and the second address can be understood as the address of the light-emitting diode 1101 in the second driving unit 120; the first current brightness can be understood as the brightness obtained by the first driving unit 110 detecting the light-emitting diode 1101 at the current time, and the first preset brightness can be understood as the preset brightness of the light-emitting diode 1101 in the first driving unit 110; the second current brightness can be understood as the brightness obtained by the second driving unit 120 detecting the light-emitting diode 1101 at the current time, and the second preset brightness can be understood as the preset brightness of the light-emitting diode 1101 in the second driving unit 120. The first preset brightness and the second preset brightness can be the same or different.

[0055] In a specific embodiment of the present invention, the first communication information further includes a first current temperature corresponding to a first address, and the second communication information further includes a second current temperature corresponding to a second address. The image processing unit 100 is specifically configured to, when the first current temperature and the first preset temperature corresponding to the first address are different, determine the first preset temperature as the first target temperature of the light-emitting diode 1101, and send the first target temperature and the first address to the first driving unit 110. The first driving unit 110 is further configured to adjust the first current temperature corresponding to the first address to the first target temperature; when the second current temperature and the second preset temperature corresponding to the second address are different, determine the second preset temperature as the second target temperature of the light-emitting diode 1101, and send the second target temperature and the second address to the second driving unit 120. The second driving unit 120 is further configured to adjust the second current temperature corresponding to the second address to the second target temperature. This allows the image processing unit 100 to adjust the temperature information (first current temperature and second current temperature) in the communication information according to the temperature information (first current temperature and second current temperature). The system determines the target temperature information (first target temperature and second target temperature) in real time and sends the target temperature information to the driving unit through the output interface. The driving unit adjusts the temperature of the light-emitting diode 1101 to the target temperature in a timely manner, reducing the overall power consumption of the LED backlight display system. In addition, it enables the image processing unit 100 to read back the temperature information of multiple driving paths through a single readback interface 1001, meeting the requirement of the image processing unit 100 to read back the temperature information sent by the driving units of multiple driving paths through a single readback interface 1001. This improves the information transmission efficiency of multiple driving paths, increases the flexibility of information transmission in the LED backlight display system, and solves the problem that the LED backlight display system driven by the image processing unit 100 cannot meet the requirement of the image processing unit 100 to read back the temperature information sent by the driving units of multiple driving paths through a single readback interface 1001 because the image processing unit 100 can only read back the temperature information sent by the driving units of a single driving path through the readback interface 1001.

[0056] The first current temperature can be understood as the temperature obtained by the first driving unit 110 detecting the light-emitting diode 1101, and the first preset temperature can be understood as the preset temperature of the light-emitting diode 1101 in the first driving unit 110; the second current temperature can be understood as the temperature obtained by the second driving unit 120 detecting the light-emitting diode 1101, and the second preset temperature can be understood as the preset temperature of the light-emitting diode 1101 in the second driving unit 120. The first preset temperature and the second preset temperature can be the same or different.

[0057] In a specific embodiment of the present invention, the first detection information further includes first anomaly report information, and the second detection information further includes second anomaly report information. The image processing unit 100 is also used to generate an anomaly handling prompt based on the first anomaly report information and / or the second anomaly report information. This enables the image processing unit 100 to read back the anomaly information of the multiple driving paths through a readback interface 1001, meets the requirement of the image processing unit 100 to read back the anomaly information sent by the driving units of the multiple driving paths through a readback interface 1001, improves the information transmission efficiency of the multiple driving paths, and increases the flexibility of information transmission in the LED backlight display system.

[0058] The first abnormality report information can be understood as the abnormal information obtained by the first driving unit 110 based on the detection of the light-emitting diode 1101, which may include abnormal temperature information, abnormal voltage information, etc. of the light-emitting diode 1101 in the first driving path; the second abnormality report information can be understood as the abnormal information obtained by the second driving unit 120 based on the detection of the light-emitting diode 1101, which may include abnormal temperature information, abnormal voltage information, etc. of the light-emitting diode 1101 in the second driving path.

[0059] For example, the first anomaly report information may be a first voltage anomaly information. The image processing unit 100 can generate an anomaly handling prompt based on the first voltage anomaly information so that technicians can handle the first voltage anomaly in a timely manner.

[0060] Alternatively, if it is necessary to add driving paths to the LED backlight display system, it is only necessary to add the same number of AND gates and readback pins as the number of driving paths to be added to the multi-channel readback unit 130.

[0061] In specific embodiments of the present invention, such as Figure 4As shown, the LED backlight display system has three driving paths. The LED backlight display system may further include a third driving unit 140, which belongs to the third driving path. The third driving unit 140 includes a light-emitting diode 1101. The third driving unit 140 is used to detect the light-emitting diode 1101 to obtain third detection information and send the third detection information to a multi-channel readback unit 130. The multi-channel readback unit 130 is used to receive the first detection information, the second detection information, and the third detection information, determine the target information based on the first detection information, the second detection information, and the third detection information, and send the target information to the image processing unit 100. For an LED backlight display system with three driving paths, such as... Figure 5 As shown, an AND gate 1312 and a third read-back pin 1303 can be added to the multi-channel read-back unit 130. That is, the multi-channel read-back unit 130 may include AND gates 1311 and 1312. AND gate 1311 is connected to the first read-back pin 1301 and the second read-back pin 1302. AND gates 1311 and 1312 are connected. AND gate 1312 is connected to the third read-back pin 1303. The third read-back pin 1303 is used to receive the third detection information obtained by the third driving unit 140 from the light-emitting diode 1101. In this way, the LED backlight display system provided by the embodiment of the present invention can increase the driving path of the LED backlight display system by adding AND gates and read-back pins, so that the LED backlight display system has better scalability and information transmission flexibility.

[0062] In one optional implementation, the first detection information includes a first voltage, the second detection information includes a second voltage, and the third detection information includes a third voltage. The third voltage can be understood as the voltage of the third driving power supply on the third driving path obtained by the third driving unit 140 from the light-emitting diode 1101. The third driving power supply can be understood as the power supply used to power the third driving unit 140. The multiplex readback unit 130 is specifically used to determine that the target information is low level when the first voltage / second voltage / third voltage is low, and to determine that the target information is high level when the first voltage, second voltage, and third voltage are all high.

[0063] For example, the first voltage is a low voltage, the second voltage is a high voltage, and the third voltage is a low voltage; the first driving unit 110 detects the voltage of the light-emitting diode 1101 to obtain the first voltage, and when the first voltage is less than a preset voltage, it determines the first voltage as a low voltage and sends the first voltage to the multiplexed readback unit 130; the second driving unit 120 detects the voltage of the light-emitting diode 1101 to obtain the second voltage, and when the second voltage is greater than the preset voltage, it determines the second voltage as a high voltage and sends the second voltage to the multiplexed readback unit 130; the third driving unit 140 detects the voltage of the light-emitting diode 1101 to obtain the third voltage, and when the third voltage is less than the preset voltage, it determines the third voltage as a low voltage and sends the third voltage to the multiplexed readback unit 130. The multi-channel readback unit 130 can receive the first voltage of the first driving path through the first readback pin 1301 and send the first voltage to AND gate 1311 through the first readback pin 1301; the multi-channel readback unit 130 can receive the second voltage of the second driving path through the second readback pin 1302 and send the second voltage to AND gate 1311 through the second readback pin 1302; the multi-channel readback unit 130 can reduce the level of the first readback pin 1301 to a low level "0" through AND gate 1311, and reduce the level of the second readback pin 1302 to a low level "0" through AND gate 1311, in the first readback pin 1301 / second readback pin When the level of pin 1302 is low, after the AND operation of AND gate 1311, the multiplexer unit 130 outputs a low level "0" through AND gate 1311 and sends the low level "0" to AND gate 1312. The multiplexer unit 130 can receive the third voltage of the third driving path through the third readout pin 1303 and send the third voltage to AND gate 1312 through the third readout pin 1303. The multiplexer unit 130 can reduce the level of the third readout pin 1303 to a low level "0" through AND gate 1312 and output a low level "0" through the AND operation of AND gate 1312, sending the low level "0" to the image processing unit 100.

[0064] In one optional implementation, the first detection information further includes first communication information, the second detection information further includes second communication information, and the third detection information further includes third communication information. The multiplex readback unit 130 is specifically used to determine the first communication information, the second communication information, and the third communication information as target information. The third communication information can be understood as the communication information obtained by the third driving unit 140 from detecting the light-emitting diode 1101.

[0065] When the multi-channel readback unit 130 receives the first communication information, the second communication information, and the third communication information, it can raise the level of the first readback pin 1301 and lower the level of the second readback pin 1302 through AND gate 1311. This causes the first readback pin 1301 to receive the first communication information and send it to AND gate 1311. Then, AND gate 1311 determines the first communication information as target information and sends it to the image processing unit 100. Next, AND gate 1311 lowers the level of the first readback pin 1301 and raises the level of the second readback pin 1302. This causes the second readback pin 1302 to receive the second communication information and send it to AND gate 1311. Then, AND gate 1311 determines the second communication information as target information and sends it to the image processing unit 100. Finally, AND gate 1311 lowers the level of the second readback pin 1302 and AND gate 1312 raises the level of the third readback pin 1303. The third readback pin 1303 receives the third communication information and sends it to AND gate 1312. Then, AND gate 1312 determines the third communication information as the target information and sends it to the image processing unit 100. This enables the image processing unit 100 to read back the communication information of multiple driving paths through a readback interface 1001, meets the requirement of the image processing unit 100 to read back the communication information sent by the driving units of multiple driving paths through a readback interface 1001, improves the information transmission efficiency of multiple driving paths, increases the flexibility of information transmission in the LED backlight display system, and solves the problem that the LED backlight display system driven by the image processing unit 100 cannot meet the requirement of the image processing unit 100 to read back the communication information sent by the driving units of multiple driving paths through a readback interface 1001 because the image processing unit 100 can only read back the communication information sent by the driving units of a single driving path through the readback interface 1001.

[0066] Optionally, in specific embodiments of the present invention, such as Figure 6As shown, the multi-channel readback unit 130 may include a potential energy comparator 1330. The potential energy comparator 1330 is connected to the first readback pin 1301 and the second readback pin 1302. The potential energy comparator 1330 can be used to obtain the first potential energy of the path where the first driving unit 110 is located and the second potential energy of the path where the second driving unit 120 is located. The multi-channel readback unit 130 can be used to determine whether to receive the first detection information / second detection information based on the first potential energy / second potential energy through the potential energy comparator 1330. In this way, the potential energy comparator 1330 can determine whether to receive the first detection information / second detection information. The detection information is then used to determine the target information that the image processing unit needs to read back based on the first and second detection information through the multi-channel readback unit. The multi-channel readback unit sends the target information to the image processing unit, and the image processing unit reads back the target information through the readback interface. This achieves the purpose of the image processing unit reading back the detection information of multiple driving paths through a single readback interface, meets the requirement of the image processing unit to read back the detection information sent by the driving units of multiple driving paths through a single readback interface, improves the information transmission efficiency of multiple driving paths, and increases the flexibility of information transmission in the LED backlight display system.

[0067] In one optional implementation, the multiplexer unit 130 can be used to receive first detection information when the potential energy comparator 1330 determines that the first potential energy belongs to the first potential energy range, and raises the level of the first read-back pin 1301 to a high level and lowers the level of the second read-back pin 1302 to a low level. When the potential energy comparator 1330 determines that the second potential energy belongs to the second potential energy range, it lowers the level of the first read-back pin to a low level and raises the level of the second read-back pin 1302 to a high level. Then, the multiplexer unit 130 determines the target information based on the first and second detection information. The specific logic for determining the target information is the same as above and will not be repeated here.

[0068] Optionally, the multi-way readback unit 130 may not include, for example, Figure 2The AND gate 1311 shown; In a specific embodiment of the present invention, the multi-channel readback unit 130 can be used to determine a voltage combination based on a first voltage and a second voltage, and determine whether to receive the first detection information / second detection information based on the voltage combination. In this way, the first detection information / second detection information can be determined based on the voltage combination, thereby realizing the determination of the target information that the image processing unit needs to read back through the first detection information and the second detection information of the multi-channel readback unit. The multi-channel readback unit sends the target information to the image processing unit, and the image processing unit reads back the target information through the readback interface. This realizes the purpose of the image processing unit to read back the detection information of multiple driving paths through a readback interface, meets the requirement of the image processing unit to read back the detection information sent by the driving unit of multiple driving paths through a readback interface, improves the information transmission efficiency of multiple driving paths, and increases the flexibility of information transmission of the LED backlight display system.

[0069] For example, low voltage is represented as 0 and high voltage is represented as 1. The multiplexer unit 130 can be used to determine that when the voltage combination is (1, 0), the level of the first read-back pin 1301 is raised to a high level and the level of the second read-back pin 1302 is lowered to a low level, so as to receive the first detection information; the multiplexer unit 130 can also be used to determine that when the voltage combination is (0, 1), the level of the second read-back pin 1302 is raised to a high level and the level of the first read-back pin 1301 is lowered to a low level, so as to receive the second detection information.

[0070] The LED 1101 backlight display system provided by the present invention includes: an image processing unit 100, a first driving unit 110, a second driving unit 120, and a multi-channel readback unit 130. The image processing unit 100 includes a readback interface 1001. The first driving unit 110 belongs to a first driving path, and the second driving unit 120 belongs to a second driving path. Both the first driving unit 110 and the second driving unit 120 include LEDs 1101. The first driving unit 110 is used to detect the LEDs 1101 in the first driving path to obtain first detection information and send the first detection information to the multi-channel readback unit 130. The second driving unit 120 is used to detect the LEDs 1101 in the second driving path to obtain second detection information and send the second detection information to the multi-channel readback unit 130. The multi-channel readback unit 130 is used to receive the first and second detection information, determine target information based on the first and second detection information, and send the target information to the image processing unit 100. The image processing unit 100 is used to read back the target information through the readback interface 1001. Therefore, compared with the prior art, the LED 1101 backlight display system provided by the present invention has two driving paths, and the detection information of the driving units of the two driving paths can be used to determine the target information that the image processing unit 100 needs to read back through the multi-path readback unit 130. Then, the multi-path readback unit 130 sends the target information to the image processing unit 100, and the image processing unit 100 reads back the target information through the readback interface 1001. That is, the multi-path readback unit 130 determines the target information according to the detection information sent by the driving units of the multiple driving paths, and sends the target information to the image processing unit 100. The image processing unit 100 reads back the target information corresponding to the detection information of the multiple driving paths through the readback interface 1001. This is equivalent to the image processing unit 100 reading back the target information through one readback interface 1001. The image processing unit 100 reads back the detection information corresponding to the detection information sent by the driving unit of the single driving path through a readback interface 1001. This satisfies the requirement of the image processing unit 100 to read back the detection information sent by the driving unit of the single driving path through a readback interface 1001, improves the information transmission efficiency of the single driving path, increases the flexibility of information transmission in the LED backlight display system, and solves the problem that the LED backlight display system driven by the image processing unit 100 cannot meet the requirement of the image processing unit 100 to read back the detection information sent by the driving unit of the single driving path through a readback interface 1001 because the image processing unit 100 can only read back the detection information sent by the driving unit of the single driving path through a readback interface 1001.

[0071] Those skilled in the art will understand that all or part of the steps of the above-described method embodiments can be implemented by hardware related to program instructions. The aforementioned program can be stored in a computer-readable storage medium. When executed, the program performs the steps of the above-described method embodiments; and the aforementioned storage medium includes various media capable of storing program code, such as ROM, RAM, magnetic disks, or optical disks.

[0072] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A light-emitting diode backlight display system, characterized in that, The system includes: an image processing unit, a first driving unit, a second driving unit, and a multi-channel readback unit. The image processing unit includes a readback interface. The first driving unit belongs to a first driving path, and the second driving unit belongs to a second driving path. Both the first driving unit and the second driving unit include light-emitting diodes (LEDs). The first driving unit is used to detect the light-emitting diode to obtain first detection information, and send the first detection information to the multiplex readback unit; The second driving unit is used to detect the light-emitting diode to obtain second detection information, and send the second detection information to the multiplex readback unit; The multi-channel readback unit is used to receive the first detection information and the second detection information, determine the target information based on the first detection information and the second detection information, and send the target information to the image processing unit; The image processing unit is used to read back the target information through the readback interface; The first detection information includes a first voltage, and the second detection information includes a second voltage. The multiplex readback unit is specifically used to determine that the target information is low when the first voltage / second voltage is low, and to determine that the target information is high when both the first voltage and the second voltage are high. The multi-channel readback unit includes a first readback pin, a second readback pin, and an AND gate; The first detection information further includes first communication information, and the second detection information further includes second communication information. The multi-channel readback unit is further specifically used to determine the target information based on the first communication information and the second communication information. The multi-channel readback unit is further specifically configured to determine the target information based on the first communication information and the second communication information, including: raising the level of the first readback pin to a high level and raising the level of the second readback pin to a high level through the AND gate, so that the first readback pin receives the first communication information and sends the first communication information to the AND gate, and determining the first communication information as the target information through the AND gate; raising the level of the first readback pin to a high level and raising the level of the second readback pin to a high level through the AND gate, so that the second readback pin receives the second communication information and sends the second communication information to the AND gate, and determining the second communication information as the target information through the AND gate.

2. The system according to claim 1, wherein: The multi-channel readback unit is specifically used to determine that the target information is at a low level when the first voltage / second voltage is low, and to determine that the target information is at a high level when both the first voltage and the second voltage are high. This includes: using an AND gate to reduce the level of the readback pin with the received low voltage to a low level, and using the AND gate to perform an AND operation based on the levels of the first and second readback pins to output a low level, thus determining that the target information is at a low level; and using an AND gate to raise the levels of the first and second readback pins to a low level when both the first and second voltages are high, and using the AND gate to perform an AND operation based on the levels of the first and second readback pins to output a high level, thus determining that the target information is at a high level.

3. The system according to claim 1, wherein: The image processing unit further includes a control power supply. Specifically, the image processing unit is used to determine a feedback voltage based on the target information and adjust the voltage of the control power supply to the feedback voltage.

4. The system according to claim 3, characterized in that, The image processing unit is specifically configured to determine a feedback voltage based on the target information and adjust the voltage of the control power supply to the feedback voltage, including: determining the feedback voltage to be low and adjusting the voltage of the control power supply to be low when the target information is at the low level, and determining the feedback voltage to be high and adjusting the voltage of the control power supply to be high when the target information is at the high level.

5. The system according to claim 1, wherein: The first communication information includes a first address and a first current brightness of the light-emitting diode corresponding to the first address. The second communication information includes a second address and a second current brightness of the light-emitting diode corresponding to the second address. The image processing unit is further specifically configured to determine the first preset brightness as the first target brightness of the light-emitting diode when the first current brightness and the first preset brightness corresponding to the first address are different, and send the first target brightness and the first address to the first driving unit; and to determine the second preset brightness as the second target brightness of the light-emitting diode when the second current brightness and the second preset brightness corresponding to the second address are different, and send the second target brightness to the second driving unit.

6. The system according to claim 5, characterized in that, The first driving unit is further configured to adjust the first current brightness of the light-emitting diode corresponding to the first address to the first target brightness; the second driving unit is further configured to adjust the second current brightness of the light-emitting diode corresponding to the second address to the second target brightness.

7. The system according to claim 5, characterized in that, The first communication information further includes a first current temperature corresponding to the first address, and the second communication information further includes a second current temperature corresponding to the second address. The image processing unit is further specifically configured to determine the first preset temperature as the first target temperature of the light-emitting diode when the first current temperature and the first preset temperature corresponding to the first address are different, and send the first target temperature and the first address to the first driving unit; and to determine the second target temperature of the light-emitting diode when the second current temperature and the second preset temperature corresponding to the second address are different, and send the second target temperature and the second address to the second driving unit.

8. The system according to claim 7, characterized in that, The first driving unit is further configured to adjust the first current temperature corresponding to the first address to the first target temperature; the second driving unit is further configured to adjust the second current temperature corresponding to the second address to the second target temperature.

9. The system according to claim 1, characterized in that, The first detection information further includes first anomaly report information, and the second detection information further includes second anomaly report information. The image processing unit is also configured to generate an anomaly handling prompt based on the first anomaly report information and / or the second anomaly report information.

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