A dual-input and dual-output breakpoint resuming LED driving method, circuit and device

Abstract

This disclosure provides a dual-input dual-output breakpoint resume LED driving method, applied to an LED driver chip and system, comprising: receiving first input data and second input data respectively; performing a first shift register processing on the first input data to obtain first registered data, and outputting the first input data as first output data; the first shift register processing is x bits of data at the front end of the shift register data, where x is the number of data bits required by a single-stage driver chip; performing a second shift register processing on the second input data to obtain second registered data; the second shift register processing is data from the (x+1)th bit to the 2xth bit at the front end of the shift register data; comparing the first registered data and the second registered data, taking the first x bits of non-zero data to obtain driving data, and inputting the x bits of data at the front end of the driving data into the LED driver circuit to drive the LED to light up; and latching the data after removing the x bits of driving data and outputting it as second output data.

Description

Technical Field

[0001] This disclosure relates to the field of LED control technology, and more specifically, to a dual-input dual-output breakpoint resume LED driving method, circuit, and device. Background Technology

[0002] In the field of LED display technology, cascaded driving is a common driving scheme. Existing technologies typically employ an N-stage cascaded driving chip approach, with driving data transmitted from the preceding stage to the following stage. Each stage of the driving chip extracts only the driving data required for its own stage to drive the connected LEDs and achieve the corresponding display effect, while simultaneously transmitting the remaining data to the next stage.

[0003] While this series-driven approach simplifies system design to some extent, it also has significant drawbacks. When a driver chip in a series system fails, it cannot transmit data properly, causing all subsequent driver chips to lose data and thus fail to drive the connected LEDs for display. This type of failure severely impacts the overall display quality and can even lead to large-area display failure, reducing the system's reliability and stability. Summary of the Invention

[0004] This disclosure provides at least one method for breakingpoint resume LED driving with dual input and dual output, which can improve the stability and reliability of the system.

[0005] This disclosure provides a dual-input dual-output breakpoint resume LED driving method, applied to LED driver chips and systems, including:

[0006] Receive the first input data and the second input data respectively;

[0007] The first input data is subjected to a first shift register process to obtain the first register data, and the first input data is output as the first output data; the first shift register process is x bits of data at the front end of the shift register data, where x is the number of data bits required by the single-level driver chip;

[0008] The second input data is subjected to a second shift register process to obtain the second register data; the second shift register process is the data from the (x+1)th bit to the 2xth bit at the beginning of the shift register data;

[0009] The first register data and the second register data are compared, and the first x non-zero bits are taken to obtain the driving data. The first x bits of the driving data are then input into the LED driving circuit to drive the LED to light up.

[0010] After removing x bits of the required driver data for this level, the data is latched and then output as the second output data.

[0011] In some embodiments, the drive data is latched and then output as the second output data, including:

[0012] Extract the x bits of the driver data from the front end and output the remaining driver data as the second output data.

[0013] In some embodiments, the first output terminal is connected to the first input terminal of the next-stage LED driver chip, and the second output terminal is connected to the second input terminal of the next-stage LED driver chip.

[0014] In some embodiments, the LED driver chip includes a first input terminal, a second input terminal, a first shift register, a data comparator, a data latch, a data backuper, a data selector, an LED driver terminal, a first output terminal, and a second output terminal; the first input data is input through the first input terminal, the second input data is input through the second input terminal, the first output data is output through the second output terminal, and the second output data is output through the first output terminal.

[0015] In some embodiments, the first input terminal is connected to the data backup unit and the first shift register; the data backup unit is connected to the second output terminal; the second input terminal is connected to the second shift register; the first shift register and the second shift register are connected to the data comparator; the data comparator is connected to the data latch; the data latch is connected to the data selector and the first output terminal; and the data selector is connected to the LED driver terminal.

[0016] In some embodiments, the first input terminal is connected to the second output terminal via a security line; the security line includes buried lines and other reliable connection methods.

[0017] In some embodiments, when the LED driver chip is the first driver chip in the driver chip circuit, the second input terminal is grounded.

[0018] This disclosure also provides a dual-input dual-output breakpoint resume LED driving circuit. The driving circuit includes at least two LED driving chips. Each LED driving chip includes a first input terminal, a second input terminal, a first output terminal, and a second output terminal. The first input terminal of each LED driving chip is connected to the second output terminal through a safety line. The first output terminal of each LED driving chip is connected to the first input terminal of the next stage, and the second output terminal of each LED driving chip is connected to the second input terminal of the next stage.

[0019] This disclosure also provides a dual-input dual-output breakpoint resume LED driving device, applied to LED driver chips and systems, including:

[0020] The data receiving module is used to receive the first input data and the second input data respectively;

[0021] The first data processing module is used to perform a first shift register processing on the first input data to obtain the first registered data, and output the first input data as the first output data; the first shift register processing is xbit data at the front end of the shift register data, where x is the number of data bits required by the single-level driver chip;

[0022] The second data processing module is used to perform a second shift register processing on the second input data to obtain second register data; the second shift register processing is the data from the (x+1)th bit to the 2xth bit of the front end of the shift register data;

[0023] The data comparison module is used to compare the first registered data with the second registered data, take the first x non-zero data to obtain the driving data, and input the first x bits of the driving data into the LED driving circuit to drive the LED to light up.

[0024] The latch module is used to latch the data after removing the x bits of the required driving data at this level and then output it as the second output data.

[0025] In some embodiments, the data comparison module includes:

[0026] The data truncation unit is used to truncate the x-bit data at the front end of the driving data and output the remaining driving data as the second output data.

[0027] This disclosure provides a dual-input dual-output breakpoint resume LED driving method. When a driver chip at a certain stage fails, the faulty node can be skipped, and data can be transmitted to a subsequently functioning driver chip. This avoids overall display failure due to a single point of failure, significantly improving system stability and reliability.

[0028] To make the above-mentioned objects, features and advantages of this disclosure more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0029] To more clearly illustrate the technical solutions of the embodiments of this disclosure, the accompanying drawings used in the embodiments will be briefly described below. These drawings are incorporated in and constitute a part of this specification. They illustrate embodiments conforming to this disclosure and, together with the specification, serve to explain the technical solutions of this disclosure. It should be understood that the following drawings only show some embodiments of this disclosure and should not be considered as limiting the scope. Those skilled in the art can obtain other related drawings based on these drawings without creative effort.

[0030] Figure 1 A flowchart of a breakpoint resume LED driving method provided in an embodiment of this disclosure is shown;

[0031] Figure 2 A schematic diagram of a dual-input dual-output LED driver chip provided in an embodiment of this disclosure is shown;

[0032] Figure 3 A schematic diagram of a dual-input dual-output breakpoint resume LED driving circuit provided in an embodiment of this disclosure is shown.

[0033] Figure 4 This diagram illustrates a schematic of the input and output data of a dual-input dual-output breakpoint resume LED driver circuit provided in an embodiment of this disclosure;

[0034] Figure 5 A schematic diagram of a dual-input dual-output breakpoint resume LED driving device provided in an embodiment of this disclosure is shown. Detailed Implementation

[0035] To make the objectives, technical solutions, and advantages of the embodiments of this disclosure clearer, the technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this disclosure, and not all of them. The components of the embodiments of this disclosure described and shown in the accompanying drawings can generally be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of this disclosure provided in the accompanying drawings is not intended to limit the scope of the claimed disclosure, but merely represents selected embodiments of this disclosure. All other embodiments obtained by those skilled in the art based on the embodiments of this disclosure without inventive effort are within the scope of protection of this disclosure.

[0036] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0037] In this document, the term "and / or" merely describes a relationship, indicating that three relationships can exist. For example, A and / or B can represent three cases: A alone, A and B simultaneously, and B alone. Furthermore, the term "at least one" in this document means any combination of at least two of any one or more elements. For example, including at least one of A, B, and C can mean including any one or more elements selected from the set consisting of A, B, and C.

[0038] Based on research, this disclosure provides a dual-input dual-output breakpoint resume LED driving method, apparatus, electronic device, and storage medium. By using a dual-input dual-output circuit structure, the first input data is directly output as backup data to the next-level driver chip, and the driving data for the LED is determined within the driver chip through data comparison. This allows the system to skip a node when a driver chip fails, transmitting data to a subsequent normally functioning driver chip, avoiding overall display failure due to a single point of failure, and significantly improving system stability and reliability.

[0039] To facilitate understanding of this embodiment, a detailed description of the dual-input dual-output breakpoint resume LED driving method disclosed in this disclosure embodiment will be provided first. The executing entity of the dual-input dual-output breakpoint resume LED driving method provided in this disclosure embodiment is generally a computer device with a certain computing capability. This computer device may include, for example, a terminal device, a server, or other processing devices. The terminal device may be a user equipment (UE), mobile device, user terminal, terminal, cellular phone, cordless phone, personal digital assistant (PDA), handheld device, computing device, in-vehicle device, wearable device, etc. In some possible implementations, this dual-input dual-output breakpoint resume LED driving method can be implemented by the processor calling computer-readable instructions stored in memory.

[0040] like Figure 1 As shown, Figure 1 A flowchart of a breakpoint resume LED driving method provided in this disclosure embodiment, the method including:

[0041] S101, Receive the first input data and the second input data respectively;

[0042] Specifically, the driver chip receives first input data and second input data from the preceding driver chip. The first input data is the main data channel, and the second input data is the backup data channel.

[0043] S102. Perform a first shift register process on the first input data to obtain the first register data, and output the first input data as the first output data; the first shift register process is x bit data at the front end of the shift register data, where x is the number of data bits required by the single-level driver chip;

[0044] Specifically, the first x bits of the first input data are shifted and stored to obtain the first stored data. Simultaneously, the first input data is directly output as the first output data and transmitted to the next-level driver chip.

[0045] S103. Perform a second shift register process on the second input data to obtain the second register data; the second shift register process is the data from the (x+1)th bit to the 2xth bit at the beginning of the shift register data;

[0046] Specifically, the data from the (x+1)th bit to the 2xth bit of the second input data is shifted and stored to obtain the second registered data. The purpose of this step is to extract data related to the current driver chip from the backup data channel.

[0047] S104. Compare the first registered data with the second registered data, take the first x bits of non-zero data to obtain the driving data, and latch the driving data as the second output data.

[0048] Specifically, the first and second registered data are compared. If the first registered data is valid, it is used as the driving data; if the first registered data is invalid (e.g., data loss due to a failure of the preceding chip), the second registered data is selected as the driving data. The driving data is latched to ensure data stability and then output as the second output data to the next-stage driver chip.

[0049] S105. Input the x bit data from the front end of the drive data circuit to the LED driver circuit to drive the LED to light up.

[0050] Specifically, the first x bits of the driving data are input into the LED driving circuit to drive the currently connected LEDs to light up, thereby achieving the corresponding display effect.

[0051] Through the above steps, the dual-input dual-output breakpoint resume LED driving method of the present invention can effectively solve the system failure problem caused by single-point failure in the prior art, and significantly improve the reliability and fault tolerance of the LED display system.

[0052] In some embodiments, the drive data in S104 is latched and then output as the second output data, including:

[0053] Extract the x bits of the driver data from the front end and output the remaining driver data as the second output data.

[0054] Specifically, the x-bit data at the front end of the driver data is the driver data segment used by the current driver chip, and the second output data serves as the first input data for the next stage driver chip. The used driver data segments are removed to improve the driving efficiency of subsequent driver chips.

[0055] In some embodiments, the first output terminal is connected to the first input terminal of the next-stage LED driver chip, and the second output terminal is connected to the second input terminal of the next-stage LED driver chip.

[0056] In some embodiments, such as Figure 2 As shown, Figure 2 An LED driver chip provided in this embodiment includes a first input terminal, a second input terminal, a first shift register, a data comparator, a data latch, a data backuper, a data selector, an LED driver terminal, a first output terminal, and a second output terminal; first input data is input through the first input terminal, second input data is input through the second input terminal, first output data is output through the second output terminal, and second output data is output through the first output terminal.

[0057] The first input terminal is connected to the data backup unit and the first shift register; the data backup unit is connected to the second output terminal; the second input terminal is connected to the second shift register; the first shift register and the second shift register are connected to the data comparator; the data comparator is connected to the data latch; the data latch is connected to the data selector and the first output terminal; the data selector is connected to the LED driver terminal.

[0058] In some embodiments, the first input terminal is connected to the second output terminal via a security line; the security line includes buried lines and other reliable connection methods.

[0059] Specifically, during the chip design phase, a safety line is planned and designed, directly connecting the first input terminal to the second output terminal. This safety line can be implemented using buried layer technology. The buried layer is located between multiple layers of metal wiring inside the chip and is isolated from other signal lines by an insulating layer to avoid signal interference.

[0060] The first input terminal transmits the signal directly to the second output terminal via a safety line, forming an independent signal channel. This channel serves as a redundant backup for the main signal channel. When the main signal channel is interrupted due to a fault, the safety line ensures that signal transmission continues, preventing system failure.

[0061] In some embodiments, when the LED driver chip is the first driver chip in the driver chip circuit, the second input terminal is grounded.

[0062] like Figure 3 As shown, Figure 3 This is a schematic diagram of a dual-input dual-output breakpoint resume LED driving circuit provided in an embodiment of this disclosure. Figure 3 As shown in the figure, the driving circuit provided in this embodiment includes at least two LED driver chips. Each LED driver chip includes a first input terminal, a second input terminal, a first output terminal, and a second output terminal. The first input terminal of the LED driver chip is connected to the second output terminal through a safety line. The first output terminal of each LED driver chip is connected to the first input terminal of the next stage, and the second output terminal of each LED driver chip is connected to the second input terminal of the next stage.

[0063] Specifically, the driving circuit is composed of multiple identical dual-input dual-output driving chips cascaded together. Each driving chip consists of two data input ports, the first input terminal DI1 and the second input terminal DI2, and two data output ports, the first output terminal DO1 and the second output terminal DO2.

[0064] Each stage driver chip receives data simultaneously from the first input terminal DI1 and the second input terminal DI2;

[0065] Each stage driver chip simultaneously outputs data from the first output terminal DO1 and the second output terminal DO2;

[0066] The data at the first input terminal DI1 of each level driver chip is transmitted to the second output terminal DO2 via a safety backup circuit for use by the next level driver chip.

[0067] The data at the first input terminal DI1 and the second input terminal DI2 of each level driver chip are compared, and the first x bits of data are extracted, transmitted to the driver chip of this level and converted into a current signal to light up the LED of this level.

[0068] In this circuit, the second input terminal DI2 of the first-stage driver chip is grounded, and the drive data is input only through the first input terminal DI1. When all stages of the driver chips in the circuit are working normally, the input and output data of each chip are as follows: Figure 4 As shown, Figure 4 This is a schematic diagram of the input and output data of a dual-input dual-output LED driver circuit with breakpoint resume transmission provided in an embodiment of this disclosure.

[0069] Even if a chip at one stage fails, the safety circuit can still ensure that backup data is transmitted from the first input terminal DI1 to the second output terminal DO2. Even if the LED at this stage fails to light up, the second output terminal DO2 still outputs data, ensuring that the second input terminal DI2 of the next-stage driver chip receives input data, thus guaranteeing normal data transmission and allowing the LED to light up normally. Figure 3 Taking C2 damage as an example:

[0070] In the series circuit, the driver chip C1 is working normally, and data transmission is as before;

[0071] In the series circuit, the driver chip C2 is not working properly. The output signal C2DO1 of the driver chip C2 is zero, and there is no data transmission.

[0072] The output signal C2DO2 of the driver chip C2 is connected to C2DI through a buried layer circuit or other security circuit, and does not pass through the internal processing circuit of the chip. Therefore, C2DO2 = C2DI1.

[0073] Since the driver chip C2DO1 has no output, C3DI1 has no input signal;

[0074] Driver chip C3, input signals C3DI2= C2DO2=C2DI1;

[0075] Inside the driver chip C3, the input signal of C3DI2 is shifted through a shift register to take x+1 to 2x bits and sent to a comparator to be compared with C3DI1. Then, x bits of data are taken from the shift register (x+1 to 2x bits) and sent to the LED driver circuit to light up the LED.

[0076] Based on the same inventive concept, this disclosure also provides a dual-input dual-output breakpoint resume LED driving device corresponding to the dual-input dual-output breakpoint resume LED driving method. Since the principle of the device in this disclosure for solving the problem is similar to the dual-input dual-output breakpoint resume LED driving method described above in this disclosure, the implementation of the device can refer to the implementation of the method, and the repeated parts will not be described again.

[0077] like Figure 5 As shown, Figure 5 This is a schematic diagram of a dual-input dual-output breakpoint resume LED driving device provided in an embodiment of this disclosure. Figure 5 As shown in the figure, the dual-input dual-output breakpoint resume LED driving device 300 provided in this embodiment includes:

[0078] Data receiving module 301 is used to receive first input data and second input data respectively;

[0079] The first data processing module 302 is used to perform a first shift register processing on the first input data to obtain first registered data, and output the first input data as first output data; the first shift register processing is x bit data at the front end of the shift register data, where x is the number of data bits required by the single-level driver chip;

[0080] The second data processing module 303 is used to perform a second shift register processing on the second input data to obtain second register data; the second shift register processing is the data from the (x+1)th bit to the 2xth bit of the front end of the shift register data;

[0081] The data comparison module 304 is used to compare the first registered data with the second registered data, take the first x bits of non-zero data to obtain the driving data, and input the first x bits of the driving data into the LED driving circuit to drive the LED to light up.

[0082] The latch module 305 is used to latch the data after removing the x bits of the required driving data at this level and output it as the second output data.

[0083] In some embodiments, the data comparison module 304 includes:

[0084] The data truncation unit is used to truncate the x-bit data at the front end of the driving data and output the remaining driving data as the second output data.

[0085] The processing flow of each module in the device and the interaction flow between each module can be referred to the relevant descriptions in the above method embodiments, and will not be detailed here.

[0086] Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working processes of the systems and devices described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here. In the several embodiments provided in this disclosure, it should be understood that the disclosed systems, devices, and methods can be implemented in other ways. The device embodiments described above are merely illustrative. For example, the division of units is only a logical functional division; in actual implementation, there may be other division methods. Furthermore, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Another point is that the displayed or discussed mutual coupling or direct coupling or communication connection may be through some communication interfaces; the indirect coupling or communication connection of devices or units may be electrical, mechanical, or other forms.

[0087] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0088] In addition, the functional units in the various embodiments of this disclosure can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit.

[0089] Finally, it should be noted that the above-described embodiments are merely specific implementations of this disclosure, used to illustrate the technical solutions of this disclosure, and not to limit it. The protection scope of this disclosure is not limited thereto. Although this disclosure has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that any person skilled in the art can still modify or easily conceive of changes to the technical solutions described in the foregoing embodiments, or make equivalent substitutions for some of the technical features, within the scope of the technology disclosed in this disclosure. Such modifications, changes, or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this disclosure, and should all be covered within the protection scope of this disclosure. Therefore, the protection scope of this disclosure should be determined by the protection scope of the claims.

Claims

1. A method for dual-input dual-output resumeable break-point LED driving, applied to an LED driving chip and system, characterized in that, The method includes: Receive the first input data and the second input data respectively; The first input data is subjected to a first shift register process to obtain first register data, and the first input data is output as first output data; the first shift register process is x bit data at the front end of the shift register data, where x is the number of data bits required by the single-level driver chip; The second input data is subjected to a second shift register process to obtain the second register data; the second shift register process is the data from the (x+1)th bit to the 2xth bit at the beginning of the shift register data; The first registered data and the second registered data are compared, and the first x bits of non-zero data are taken to obtain the driving data. The first x bits of the driving data are then input into the LED driving circuit to drive the LED to light up. The data after removing the x bit driver data is latched and then output as the second output data.

2. The method of claim 1, wherein, The data after removing x bit drive data is latched and output as the second output data, including: The driver data front-end x bits are truncated, and the remaining driver data is output as the second output data.

3. The method of claim 1, wherein, The LED driver chip includes a first input terminal, a second input terminal, a first shift register, a data comparator, a data latch, a data backuper, a data selector, an LED driver terminal, a first output terminal, and a second output terminal; the first input data is input through the first input terminal, the second input data is input through the second input terminal, the first output data is output through the second output terminal, and the second output data is output through the first output terminal.

4. The method as described in claim 3, characterized in that, The first input terminal is connected to the data backup unit and the first shift register; the data backup unit is connected to the second output terminal; the second input terminal is connected to the second shift register; the first shift register and the second shift register are connected to the data comparator; the data comparator is connected to the data latch; the data latch is connected to the data selector and the first output terminal; the data selector is connected to the LED driver terminal.

5. The method as described in claim 3, characterized in that, The first output terminal is connected to the first input terminal of the next-stage LED driver chip, and the second output terminal is connected to the second input terminal of the next-stage LED driver chip.

6. The method as described in claim 3, characterized in that, The first input terminal is connected to the second output terminal via a secure line; the secure line includes buried lines and other reliable connection methods.

7. The method as described in claim 3, characterized in that, When the LED driver chip is the first-stage driver chip in the driver chip circuit, the second input terminal is grounded.

8. A dual-input dual-output breakpoint resume LED driving device, applied to LED driver chips and systems, characterized in that, The device includes: The data receiving module is used to receive the first input data and the second input data respectively; The first data processing module is used to perform a first shift register processing on the first input data to obtain first registered data, and output the first input data as first output data; the first shift register processing is x bit data at the front end of the shift register data, where x is the number of data bits required by the single-level driver chip; The second data processing module is used to perform a second shift register processing on the second input data to obtain second register data; the second shift register processing is the data from the (x+1)th bit to the 2xth bit of the front end of the shift register data; The data comparison module is used to compare the first registered data with the second registered data, take the first x non-zero data to obtain the driving data, and input the first x bits of the driving data into the LED driving circuit to drive the LED to light up. The latch module is used to latch the data after removing the x bits of the required driving data at this level and then output it as the second output data.

9. The apparatus as claimed in claim 8, characterized in that, The data comparison module includes: The data truncation unit is used to truncate the x-bit data at the front end of the driving data and output the remaining driving data as the second output data.

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