WO2022007159A1 - Led控制系统、设备、方法及存储介质 - Google Patents

Led控制系统、设备、方法及存储介质 Download PDF

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Publication number
WO2022007159A1
WO2022007159A1 PCT/CN2020/112821 CN2020112821W WO2022007159A1 WO 2022007159 A1 WO2022007159 A1 WO 2022007159A1 CN 2020112821 W CN2020112821 W CN 2020112821W WO 2022007159 A1 WO2022007159 A1 WO 2022007159A1
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WIPO (PCT)
Prior art keywords
data
led driver
led
control
transmission
Prior art date
Application number
PCT/CN2020/112821
Other languages
English (en)
French (fr)
Inventor
金锺大
林荣镇
严丞辉
Original Assignee
北京显芯科技有限公司
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Publication date
Application filed by 北京显芯科技有限公司 filed Critical 北京显芯科技有限公司
Priority to KR1020237001332A priority Critical patent/KR20230023017A/ko
Publication of WO2022007159A1 publication Critical patent/WO2022007159A1/zh
Priority to US18/094,336 priority patent/US20230142268A1/en

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    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
    • G09G3/3406—Control of illumination source
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
    • H05B45/10—Controlling the intensity of the light
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B47/00—Circuit arrangements for operating light sources in general, i.e. where the type of light source is not relevant
    • H05B47/10—Controlling the light source
    • H05B47/175—Controlling the light source by remote control
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
    • H05B45/30—Driver circuits
    • H05B45/32—Pulse-control circuits
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B47/00—Circuit arrangements for operating light sources in general, i.e. where the type of light source is not relevant
    • H05B47/10—Controlling the light source
    • H05B47/175—Controlling the light source by remote control
    • H05B47/18—Controlling the light source by remote control via data-bus transmission
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2310/00—Command of the display device
    • G09G2310/08—Details of timing specific for flat panels, other than clock recovery
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/06—Adjustment of display parameters
    • G09G2320/0626—Adjustment of display parameters for control of overall brightness

Definitions

  • Embodiments of the present invention relate to the field of LED display, and in particular, to an LED control system, device, method, and storage medium.
  • LCD TVs liquid crystal televisions
  • LED Light Emitting Diode
  • the LED backlight can be used to improve the color performance of the LCD TV by arranging hundreds or even thousands of LEDs.
  • the controller is respectively connected with each LED driver, and transmits the corresponding data to each LED driver.
  • the disadvantage of the prior art is that, in order to realize the 1:N communication between the controller and the LED driver, it is necessary to set the addresses of the N LED drivers in advance, which is complicated and complicated, and the controller and the N LED drivers are respectively connected, and the wiring is complicated. higher cost.
  • Embodiments of the present invention provide an LED control system, device, method, and storage medium, so as to solve the technical problems of complicated wiring and high cost between the controller and the LED driver in the prior art.
  • an embodiment of the present invention provides an LED control system, including: a controller and a plurality of cascaded LED drivers;
  • the controller is used for: sending a data signal to the plurality of cascaded LED drivers, where the data signal includes data packets corresponding to the plurality of LED drivers arranged in sequence, and the data packet corresponding to each LED driver includes the LED driver Corresponding control data and end bit;
  • the LED driver includes a transmission switch; the LED driver is used to: obtain control data of a preset length from the controller or the previous LED driver, and detect whether the end bit is a preset value; if it is detected that the end bit is a preset value; If the value is set and the next LED driver exists, the transmission flag is set to the first state value; when the transmission flag is the first state value, the transmission switch is turned on to transmit the data signal after the end bit to Next driver; when the transmission flag is not the first state value, the transmission switch is turned off.
  • any two adjacent LED drivers are connected through a single signal line, and a first LED driver among the plurality of cascaded LED drivers is connected to the controller.
  • the LED driver is also used to:
  • the data collection completion flag is set to the second state value, so as to prevent the data after the control data of the preset length from being stored.
  • the data packet corresponding to each LED driver further includes a start code field before the control data
  • the LED driver When the LED driver stores the acquired control data, it is specifically used to: detect whether the start code field is correct; if it is correct, store the control data after the start code field; if it is not correct, discard the start code field. control data after the start code field.
  • the LED driver is also used to:
  • the LED driver is initialized.
  • each LED driver is connected to at least one LED
  • the control data is brightness data, which is used for the LED driver to perform brightness control on the LEDs connected to it;
  • control data is command data for controlling the state of the LED driver.
  • the data packet further includes: an indication bit set before the control data;
  • the indication bit is used to indicate whether the control data is luminance data or command data.
  • the command data includes at least one of the following:
  • a reset command used to set the transmission flag of each LED driver to the first state value
  • a start command used to set the transmission flag of each LED driver to a non-first state value
  • the display command is used to control each LED driver to drive the LED to work according to the corresponding brightness data
  • the watchdog control command is used to control the watchdog of each LED driver.
  • the controller is further configured to send a reset command before sending the luminance data, and then send a start command.
  • an embodiment of the present invention provides an electronic device, including the LED control system described in any one of the first aspect and a plurality of LEDs;
  • the LED control system is used to control the plurality of LEDs.
  • an embodiment of the present invention provides a data transmission method, which is applied to any LED driver among a plurality of cascaded LED drivers, wherein the LED driver includes a transmission switch, and the method includes:
  • the data signal includes data packets corresponding to a plurality of LED drivers arranged in sequence, and the data packet corresponding to each LED driver includes control data and an end bit corresponding to the LED driver;
  • the transmission flag is set to the first state value; wherein, when the transmission flag is the first state value, the transmission switch is turned on, so that all The data signal after the end bit is transmitted to the next driver; when the transmission flag is not the first state value, the transmission switch is turned off.
  • an embodiment of the present invention provides a data transmission method, which is applied to a controller, and the method includes:
  • the data signals include data packets corresponding to the multiple LED drivers arranged in sequence, and the data packets corresponding to each LED driver include the control data and the end bit corresponding to the LED driver.
  • the LED driver obtains control data of a preset length from the controller or the previous LED driver, and detects whether the end bit is a preset value.
  • the transmission flag is set to the first state value; when the transmission flag is the first state value, the transmission switch of the LED driver is turned on, so that the The data signal after the end bit is transmitted to the next driver; when the transmission flag is not the first state value, the transmission switch is turned off.
  • an embodiment of the present invention provides an LED driver, including: at least one processor and a memory;
  • the memory stores computer-executable instructions
  • the at least one processor executes computer-executable instructions stored in the memory to cause the at least one processor to perform the method of the third aspect.
  • an embodiment of the present invention provides a controller, including: at least one processor and a memory;
  • the memory stores computer-executable instructions
  • the at least one processor executes computer-implemented instructions stored in the memory, causing the at least one processor to perform the method of the fourth aspect.
  • an embodiment of the present invention provides a computer-readable storage medium, where computer-executable instructions are stored in the computer-readable storage medium, and when a processor executes the computer-executable instructions, the third aspect or the fourth aspect is implemented. the method described in the aspect.
  • the LED control system, device, method, and storage medium provided by the embodiments of the present invention can send data signals to multiple cascaded LED drivers through the controller, and the data signals include data packets corresponding to the multiple LED drivers arranged in sequence,
  • the data packet corresponding to each LED driver includes control data corresponding to the LED driver and an end bit.
  • the LED driver is used to obtain control data of a preset length from the controller or the previous LED driver, and to detect whether the end bit is. is a preset value. If it is detected that the end bit is a preset value and there is a next LED driver, the transmission flag is set to the first state value. When the transmission flag is the first state value, the transmission of the LED driver The switch is turned on to transmit the data signal after the end bit to the next driver. When the transmission flag is not the first state value, the transmission switch is turned off, so that the data transmission is realized by cascading without the need for Setting the address of the LED driver in advance has simple steps, high efficiency and accuracy, and simplifies wiring and effectively reduces costs.
  • FIG. 1 is a schematic diagram of an application scenario of an LED control system provided by an embodiment of the present invention.
  • FIG. 2 is a schematic structural diagram of an LED control system provided by an embodiment of the present invention.
  • FIG. 3 is a schematic diagram of a process of data signal transmission according to an embodiment of the present invention.
  • FIG. 4 is a schematic diagram of a principle of collecting data signals according to an embodiment of the present invention.
  • FIG. 5 is a schematic diagram of the working principle of an LED driver according to an embodiment of the present invention.
  • FIG. 6 is a working sequence diagram of an LED driver provided by an embodiment of the present invention.
  • FIG. 7 is a schematic diagram of a change of a transmission flag in a data signal transmission process according to an embodiment of the present invention.
  • FIG. 8 is a schematic diagram of a start code field provided by an embodiment of the present invention.
  • FIG. 9 is a schematic time sequence diagram of a transmission flag of an LED driver according to an embodiment of the present invention.
  • FIG. 10 is a schematic flowchart of controlling an LED according to an embodiment of the present invention.
  • the words “if”, “if” as used herein may be interpreted as “at” or “when” or “in response to determining” or “in response to detecting”.
  • the phrases “if determined” or “if detected (the stated condition or event)” can be interpreted as “when determined” or “in response to determining” or “when detected (the stated condition or event),” depending on the context )” or “in response to detection (a stated condition or event)”.
  • FIG. 1 is a schematic diagram of an application scenario of an LED control system provided by an embodiment of the present invention. As shown in FIG. 1 , a plurality of LEDs 20 are provided on the substrate 10 , and the LEDs 20 are controlled by the LED driver 30 . For simplicity of view, only a portion of the LED driver 30 is shown in the figure.
  • Each LED driver 30 can control one or more LEDs 20.
  • the specific scheme of the LED driver 30 to control the LED 20 is shown in the form of a dotted frame in FIG.
  • the four LEDs 20 in the dotted frame where the LED driver 30 is located are respectively connected, and control the brightness of the four connected LEDs 20 .
  • a plurality of LED drivers 30 may be in a cascaded state, and the data signals sent by the controller 40 are sequentially transmitted among the LED drivers 30.
  • Each LED driver 30 can determine whether its own signal has been normally received, thereby improving the accuracy of data transmission and meeting the data transmission requirements in the cascade state.
  • FIG. 2 is a schematic structural diagram of an LED control system according to an embodiment of the present invention.
  • the LED control system may include: a controller and a plurality of cascaded LED drivers.
  • the controller can act as a master device (Master), the LED driver can act as a slave device (Slave), and the controller controls the LED driver.
  • Master master
  • Slave slave device
  • any two adjacent LED drivers may be connected through a single signal line, and the first LED driver in the plurality of cascaded LED drivers is connected to the controller.
  • the first LED driver is connected to the controller
  • the output of the controller is used as the input of the first LED driver
  • the input of each subsequent LED driver is the previous LED drive output.
  • the controller is used for: sending a data signal to the plurality of cascaded LED drivers, where the data signal includes data packets corresponding to the plurality of LED drivers arranged in sequence, and the data packet corresponding to each LED driver includes the LED driver Corresponding control data and stop bit.
  • the LED driver includes a transmission switch; the LED driver is used to: obtain control data of a preset length from the controller or the previous LED driver, and detect whether the end bit is a preset value; if it is detected that the end bit is a preset value; Set the value and there is the next LED driver, then set the transmission flag (Bypass flag) to the first state value; when the transmission flag is the first state value, the transmission switch is turned on, so that the The data signal is transmitted to the next driver; when the transmission flag is not the first state value, the transmission switch is turned off.
  • the controller is configured to send a data signal
  • the data signal may include data packets corresponding to a plurality of LED drivers.
  • the arrangement sequence of the data packets is consistent with the cascading sequence of the LED drivers. That is to say, in the data signal, the ith data packet is a data packet corresponding to the ith LED driver, wherein i ranges from 0 to N, and N is the number of LED drivers.
  • Each LED driver is used to obtain its own corresponding data packet, and perform corresponding operations according to the corresponding data packet.
  • Each data packet may include control data and an end bit, the control data may be a preset length, and the control data may be set in front of the end bit. The end bit must be a preset value before continuing to transmit the data signal downward.
  • the length of the control data corresponding to each LED driver is 4 and the preset value is 0 as an example for description.
  • each LED driver After each LED driver obtains 4-bit control data, it can detect whether the 5th bit of data, that is, the end bit, is 0. If it is 0, it will pass the data signal after the end bit to the next LED driver. If it is not 0, Then it can not be passed down.
  • FIG. 3 is a schematic diagram of a data signal transmission process according to an embodiment of the present invention.
  • the data signal sent by the controller can be 1010 0 1001 0 001....
  • the first LED driver collects the 4-bit control data as 1010, and then detects the 5th bit, that is, the end bit is 0, which meets the requirements, and the subsequent data can be passed down to the second LED driver. Therefore, the output signal of the first LED driver is 1001 0 001....
  • the second LED driver collects the 4-bit control data 1001, it detects that the fifth bit, that is, the end bit is 0, which meets the requirements, and can pass the following data down to the third LED driver. Therefore, the output of the second LED driver will have a signal of 001.... And so on, until the data is transferred to the last LED driver, so that the configuration of all LED drivers can be completed.
  • the LED driver may set the transmission flag to a first state value when detecting that the end bit is a preset value, so as to transmit the data signal after the end bit to the next LED driver.
  • the LED driver controls the transmission switch to be turned on to transmit data to the next LED driver; when the transmission flag is not the first state value, the LED driver controls the The transmit switch is open so that no data is passed backwards.
  • the end bit can be set to 1 to indicate that the data is correct, or, two or more LED drivers can be set between two adjacent LED drivers.
  • the data line is connected to transmit more data at one time and improve the data transmission efficiency.
  • the LED control system includes a controller and a plurality of cascaded LED drivers, wherein the controller is configured to send a data signal to the plurality of cascaded LED drivers, and the data signal includes sequentially arranged LED drivers.
  • Data packets corresponding to multiple LED drivers, the data packets corresponding to each LED driver include control data and end bits corresponding to the LED driver, and the LED driver is used to obtain a preset length from the controller or the previous LED driver control data, and detect whether the end bit is a preset value, if it is detected that the end bit is a preset value and there is the next LED driver, the transmission flag is set to the first state value, and the transmission flag is the first state value, the transmission switch of the LED driver is turned on to transmit the data signal after the end bit to the next driver, and when the transmission flag is not the first state value, the transmission switch is turned off, so as to pass the
  • the cascading method realizes data transmission without setting the address of the LED driver in advance, the steps are simple, the efficiency and accuracy are high,
  • the LED driver can also be used to: store the acquired control data; after acquiring the preset length of control data, set the data collection completion flag (Data received flag) to the second state value to prevent Data after the control data of the preset length is stored.
  • Data received flag data collection completion flag
  • FIG. 4 is a schematic diagram of a principle of collecting data signals according to an embodiment of the present invention.
  • the transmission of one-bit (bit) data can occupy time t 0
  • t 0 can be decomposed into four periods of t 1 , t 2 , t 3 , and t 4 , the period t 1 is high level, and t 4 low period, t 2, and t 3 period used to transmit data, if time t 2 and t 3 is high, then the data transmission is 1, t 2 and t 3 if the period is low, then the transmission data is 0.
  • Table 1 shows an example of the duration corresponding to each time period.
  • the LED driver can detect the rising edge (Detect rising point) at the beginning of time t1, and then, after t 0 /2 or 3 microseconds (usec), sample data at a fixed delay point ( Sample the data at fixed delayed point) to determine whether the current data is 0 or 1.
  • Fig. 4 represents the moment of detecting the rising edge or data sampling. It can be seen from Fig. 4 that the potentials of t 2 and t 3 remain the same, and sampling between t 2 and t 3 can effectively ensure sampling correctness of data. Data transmission between the controller and the LED driver and between adjacent LED drivers can be realized through the solution shown in FIG. 4 .
  • FIG. 5 is a schematic diagram of a working principle of an LED driver according to an embodiment of the present invention.
  • the LED driver may include:
  • Input bit detection module used to detect the rising edge of the input signal (Input signal);
  • the clock generation part is used to generate the clock signal, so as to realize the detection of the input signal through the clock signal;
  • t 0 /2 delay module (t 0 /2 time delay part), used to delay the time of t 0 /2;
  • the data capture module (Data Capture part) is used to capture data at t 0 /2 to determine whether the transmitted data is 1 or 0;
  • M-bit memory module (Mbit Memory part), used to store control data with a preset length of M bits
  • the Mbit receive detection part is used to judge whether the received data reaches M bits, and after reaching the M bits, the data collection completion flag is set to the second state value, thereby controlling the M-bit storage module to no longer Continue to store the following data; in addition, the M-bit receiving detection module can also determine whether the M+1th bit is 0 after determining that the received data reaches M-bit, and if so, set the transmission flag to the first state value, such as 1 ;
  • the data selector (MUX) is used to not transfer data backward when the transfer flag is 0, and transfer data backward when the transfer flag is 1.
  • the data selector can be used as a transmission switch here, and through the transmission switch, it is possible to control whether the data is transmitted backwards.
  • FIG. 6 is a working timing diagram of an LED driver according to an embodiment of the present invention. As shown, an input signal each time data occupancy 6 t 0, the rising edge detecting data corresponding to the start line in the input signal, specifically using two DFF (Data Flip-Flop / Delay Flip-Flop, D flip-flop) to achieve detection, the clock signal generated by the clock generation module is faster than the speed of sampling t1 at least twice.
  • DFF Data Flip-Flop / Delay Flip-Flop, D flip-flop
  • the data capture flag (Data capture flag) becomes 1 to capture the input signal (Capture).
  • the captured data is sequentially stored in M-bit memory blocks.
  • FIG. 7 is a schematic diagram of a change of a transmission flag in a data signal transmission process according to an embodiment of the present invention.
  • Fig. 7 is based on Fig. 3, with the change of the transmission flag added.
  • the data signal sent by the controller can be 1010 0 1001 0 001..., and each bit of data can be transmitted as shown in Figure 3.
  • the first LED driver collects the 4-bit control data as 1010, and then detects the 5th bit, that is, the end bit is 0, which meets the requirements, and can raise the transmission flag to 1, so as to transmit the following data downward. Therefore, the output signal of the first LED driver is 1001 0 001....
  • the second LED driver After the second LED driver collects the 4-bit control data 1001, it detects that the 5th bit, that is, the end bit is 0. If it meets the requirements, the transmission flag can be raised to 1, so that the following data can be passed down to the third LED driver. . Therefore, the output of the second LED driver will have a signal of 001.... And so on, until the data is transferred to the last LED driver, so that the configuration of all LED drivers can be completed.
  • the transmission flag can realize the control of whether to transmit the data signal backward, can effectively prevent errors in the transmission process, and improve the accuracy and efficiency of transmission.
  • the backward transmission of data is realized by controlling a transmission switch such as a data selector through a transmission flag, which has a simple structure and is easy to implement. After obtaining the control data of the preset length, by changing the data collection completion flag to prevent the data after the control data of the preset length from being stored, it can ensure that the LED driver only stores the data belonging to itself, effectively reducing the occupation of storage space, And it is convenient to control the LED according to the stored data subsequently.
  • the data packet corresponding to each LED driver may further include a start code (Preamble code) field located before the control data.
  • start code Preamble code
  • the LED driver can specifically be used to: detect whether the start code field is correct; if it is correct, store the control data after the start code field; if it is not correct, discard the Control data after the start code field.
  • FIG. 8 is a schematic diagram of a start code field according to an embodiment of the present invention.
  • the start code may be 0xA6, that is, 10100110, or may be other preset values.
  • the internal pseudo chip enable can be realized, and the writing error caused by panel noise can also be avoided (Error-writing by Panel Noise).
  • the LED driver may also be used to initialize the LED driver if the start code field is incorrect, and/or data is not received within a preset time.
  • no data is received within a preset time, which may mean that no data is received within a preset time after the start code field is obtained, or it may be detected every preset time, and if no data is received, the Initialization to improve the stability of the LED driver.
  • control data in the data packets received by each LED driver is brightness data, which is used for the LED driver to perform brightness control on the LEDs connected to it; or , the control data is command data, which is used to control the state of the LED driver.
  • the data packet may further include: an indication bit set before the control data, the indication bit is used to indicate whether the control data is brightness data or command data, to ensure that the transmitted data is normally used by the LED driver. .
  • the data packet start code field (8 bits) + indication bit (1 bit) + brightness data (48 bits) / command data (8 bits) + end bit (1 bit), a total of 58 bits / 18 bits.
  • the indicator bit when the indicator bit is 1, it represents command data in the data packet, when the indicator bit is 0, it represents brightness data in the data packet, and the end bit must be 0 to change the transmission flag. That is, when command data is transmitted, the data packet is: 8-bit start code field+"0"+8-bit command data+"0". When transmitting luminance data, the data packet is: 8-bit start code field + "1" + 48-bit luminance data + "0".
  • the number of bits in each of the above parts can vary depending on the application conditions. For example, 48-bit luminance data can be used to control 4 LEDs, each corresponding to 12-bit luminance data. If 16 bits of brightness data are used to control a single LED, the total brightness data in the packet may reach 64 bits.
  • command data may include at least one of the following:
  • the reset command is used to set the transmission flag of each LED driver to the first state value, so that all LED drivers cannot transmit data backwards;
  • a start command used to set the transmission flag of each LED driver to a non-first state value, so that all LED drivers can transmit data backwards;
  • the display command is used to control each LED driver to drive the LED to work according to the corresponding brightness data
  • the watchdog control command is used to control the watchdog of each LED driver.
  • the watchdog control command may be a watchdog clearing command, so as to clear the watchdog count.
  • reset command, start command and display command, etc. can also achieve clear watchdog count.
  • Table 2 shows an example of command data provided by an embodiment of the present invention.
  • the controller may also send a reset command before sending the brightness data, and then send a start command.
  • FIG. 9 is a schematic time sequence diagram of a transmission flag of an LED driver according to an embodiment of the present invention. From top to bottom in FIG. 9 are the transmission marks of the first to fourth LED drivers respectively. As shown in Figure 9, after sending the reset command, the transmission flags of all LED drivers are set to 1, allowing the signal to be transmitted backwards. Then, a start command can be sent, which will set the transmit flag of each LED driver to 0, and all LED drivers will not be allowed to transmit signals backwards.
  • the rectangular box in the figure represents the data packet received by each LED driver when its own transmission flag is 0.
  • the number in the rectangular box indicates that the data packet is sent by the controller.
  • the number of data packets in the data signal is a prefix 0
  • the first LED driver After the first LED driver obtains the corresponding brightness data, it detects that the end bit is 0, and at this time, the transmission flag is set to 1, so that the data signal can be transmitted to the second LED driver. Similarly, after obtaining the corresponding brightness data, the second LED driver detects that the end bit is 0, and sets the transmission flag to 1, so that the data signal can be transmitted to the third LED driver, and so on, until all LEDs The drivers all get the luminance data and all transfer flags are set to 1.
  • a display command can be used to enable the LED drivers to control the display of the LEDs according to the acquired data.
  • a start command can be sent first, the transmission flag of each LED driver is set to 0, and all LED drivers are not allowed to transmit backwards, and then transmit the brightness data.
  • FIG. 10 is a schematic flowchart of controlling an LED according to an embodiment of the present invention. As shown in Figure 10, after power-on, or when there is a control command to clear the watchdog, the LED driver can be controlled by a reset command, so that all LED drivers are allowed to pass backwards and reset the watchdog count .
  • the data is packaged and sent to the LED driver. After the LED driver continuously receives its corresponding data, it is changed to allow backward transmission, and the internal update is locked. Multiple LED drivers receive data one by one, until the last LED driver has also received data, all LED drivers change to allow backward pass mode. During the whole process, the watchdog count can be cleared after the LED driver receives command data or brightness data.
  • An embodiment of the present invention further provides an electronic device, including the LED control system described in any of the above embodiments and a plurality of LEDs; the LED control system is used to control the plurality of LEDs.
  • the electronic device may be any device provided with LEDs, such as a liquid crystal TV, which is not limited in this embodiment of the present invention.
  • Embodiments of the present invention further provide a data transmission method, which is applied to any LED driver among a plurality of cascaded LED drivers, wherein the LED driver includes a transmission switch, and the method may include: a slave controller or a previous LED driver Acquire a data signal, the data signal includes data packets corresponding to a plurality of LED drivers arranged in sequence, and the data packet corresponding to each LED driver includes control data and an end bit corresponding to the LED driver; after obtaining the preset length control After the data, it is detected whether the end bit is a preset value; if the end bit is a preset value and there is the next LED driver, the transmission flag is set to the first state value; wherein, the transmission flag is the first state When the transfer flag is not the first state value, the transfer switch is turned on to transfer the data signal after the end bit to the next driver; when the transfer flag is not the first state value, the transfer switch is turned off.
  • An embodiment of the present invention further provides an LED driver, comprising: at least one processor and a memory; the memory stores computer-executed instructions; the at least one processor executes the computer-executed instructions stored in the memory, so that the at least one processing The controller implements the method as described above applied to the LED driver.
  • An embodiment of the present invention further provides a data transmission method, which is applied to a controller.
  • the method includes: determining a data signal corresponding to a plurality of cascaded LED drivers, where the data signal includes data corresponding to a plurality of LED drivers arranged in sequence. packet, the data packet corresponding to each LED driver includes control data corresponding to the LED driver and an end bit; sending a data signal to the plurality of cascaded LED drivers, so that the LED driver can be sent from the controller or the front An LED driver obtains control data of a preset length, and detects whether the end bit is a preset value.
  • the transmission flag is set to the first state value;
  • the transmission switch of the LED driver is turned on to transmit the data signal after the end bit to the next driver;
  • the transmission flag is not the first state value, the The transfer switch is open.
  • An embodiment of the present invention further provides a controller, comprising: at least one processor and a memory; the memory stores computer-executable instructions; the at least one processor executes the computer-executable instructions stored in the memory, so that the at least one process The controller executes the data transfer method applied to the controller as described above.
  • the LED driver and/or the controller may also be implemented by a hardware circuit.
  • An embodiment of the present invention further provides a computer-readable storage medium, where computer-executable instructions are stored in the computer-readable storage medium, and when a processor executes the computer-executable instructions, any of the foregoing methods is implemented.
  • the disclosed apparatus and method may be implemented in other manners.
  • the device embodiments described above are only illustrative.
  • the division of the modules is only a logical function division. In actual implementation, there may be other division methods.
  • multiple modules may be combined or integrated. to another system, or some features can be ignored, or not implemented.
  • the shown or discussed mutual coupling or direct coupling or communication connection may be through some interfaces, indirect coupling or communication connection of devices or modules, and may be in electrical, mechanical or other forms.
  • modules described as separate components may or may not be physically separated, and components shown as modules may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the modules may be selected according to actual needs to implement the solution of this embodiment.
  • each functional module in each embodiment of the present invention may be integrated into one processing unit, or each module may exist physically alone, or two or more modules may be integrated into one unit.
  • the units formed by the above modules can be implemented in the form of hardware, or can be implemented in the form of hardware plus software functional units.
  • the above-mentioned integrated modules implemented in the form of software functional modules can be stored in a computer-readable storage medium.
  • the above-mentioned software function modules are stored in a storage medium, and include several instructions to cause a computer device (which may be a personal computer, a server, or a network device, etc.) or a processor to execute some steps of the methods described in the various embodiments of the present application.
  • processor may be a central processing unit (Central Processing Unit, referred to as CPU), or other general-purpose processors, digital signal processors (Digital Signal Processor, referred to as DSP), application specific integrated circuit (Application Specific Integrated Circuit, Referred to as ASIC) and so on.
  • CPU Central Processing Unit
  • DSP Digital Signal Processor
  • ASIC Application Specific Integrated Circuit
  • a general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
  • the steps of the method disclosed in conjunction with the invention can be directly embodied as executed by a hardware processor, or executed by a combination of hardware and software modules in the processor.
  • the memory may include high-speed RAM memory, and may also include non-volatile storage NVM, such as at least one magnetic disk memory, and may also be a U disk, a removable hard disk, a read-only memory, a magnetic disk or an optical disk, and the like.
  • NVM non-volatile storage
  • the bus can be an Industry Standard Architecture (ISA for short) bus, a Peripheral Component Interconnect (PCI for short) bus or an Extended Industry Standard Architecture (EISA for short) bus or the like.
  • ISA Industry Standard Architecture
  • PCI Peripheral Component Interconnect
  • EISA Extended Industry Standard Architecture
  • the bus can be divided into address bus, data bus, control bus and so on.
  • the buses in the drawings of the present application are not limited to only one bus or one type of bus.
  • the above-mentioned storage medium may be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read only memory (EEPROM), erasable Except programmable read only memory (EPROM), programmable read only memory (PROM), read only memory (ROM), magnetic memory, flash memory, magnetic disk or optical disk.
  • SRAM static random access memory
  • EEPROM electrically erasable programmable read only memory
  • EPROM erasable except programmable read only memory
  • PROM programmable read only memory
  • ROM read only memory
  • magnetic memory flash memory
  • flash memory magnetic disk or optical disk.
  • a storage medium can be any available medium that can be accessed by a general purpose or special purpose computer.
  • An exemplary storage medium is coupled to the processor, such that the processor can read information from, and write information to, the storage medium.
  • the storage medium can also be an integral part of the processor.
  • the processor and the storage medium may be located in Application Specific Integrated Circuits (ASIC for short).
  • ASIC Application Specific Integrated Circuits
  • the processor and the storage medium may also exist in the electronic device or the host device as discrete components.
  • the aforementioned program can be stored in a computer-readable storage medium.
  • the steps including the above method embodiments are executed; and the aforementioned storage medium includes: ROM, RAM, magnetic disk or optical disk and other media that can store program codes.

Abstract

一种LED控制系统、设备、方法及存储介质，系统包括：控制器（40）以及多个级联的LED驱动器（30）；控制器（40）用于：向多个级联的LED驱动器（30）发送数据信号，数据信号包括依次排列的多个LED驱动器（30）对应的数据包，每一LED驱动器（30）对应的数据包包括LED驱动器（30）对应的控制数据以及结束位；LED驱动器（30）用于：从控制器（40）或前一LED驱动器（30）获取预设长度的控制数据，并检测结束位是否为预设数值；若结束位为预设数值且存在下一LED驱动器（30），则将结束位后的数据信号传输给下一LED驱动器（30）。LED控制系统、设备、方法及存储介质，可以通过级联的方式实现数据传输，简化了布线，有效降低成本。

Description

LED控制系统、设备、方法及存储介质 技术领域
本发明实施例涉及LED显示领域，尤其涉及一种LED控制系统、设备、方法及存储介质。
背景技术
随着电子科技的不断发展，图像显示设备如液晶电视(LCD TV)等的性能不断增强，应用也越来越广泛。
目前，在液晶电视中常常利用发光二极管(Light Emitting Diode，LED)来增强显示效果。例如，可以采用LED背光(backlight)的方式，通过设置数百个乃至数千个LED，增进液晶电视显示的色彩表现。现有技术中，为了实现对LED的控制，需要设置多个LED驱动器。控制器与各LED驱动器分别连接，向各LED驱动器传输其对应的数据。
现有技术的不足之处在于，为了实现控制器与LED驱动器的1：N通信，需要事先分别设置N个LED驱动器的地址，步骤繁琐，且控制器与N个LED驱动器分别连接，布线复杂，成本较高。
发明内容
本发明实施例提供一种LED控制系统、设备、方法及存储介质，以解决现有技术中控制器与LED驱动器之间布线复杂、成本较高的技术问题。
第一方面，本发明实施例提供一种LED控制系统，包括：控制器以及多个级联的LED驱动器；
所述控制器用于：向所述多个级联的LED驱动器发送数据信号，所述数据信号包括依次排列的多个LED驱动器对应的数据包，每一LED驱动器对应的数据包包括所述LED驱动器对应的控制数据以及结束位；
所述LED驱动器包括传输开关；所述LED驱动器用于：从所述控制器或前一LED驱动器获取预设长度的控制数据，并检测结束位是否为预设数值；若检测到结束位为预设数值且存在下一LED驱动器，则将传输标志设置为第一状态值；在所述传输标志为第一状态值时，所述传输开关打开，以将所述结束位后的数据信号传输给下一驱动器；在所述传输标志不为第一状态值时， 所述传输开关断开。
在一种可能的设计中，任意两相邻的LED驱动器之间通过单一信号线连接，所述多个级联的LED驱动器中的第一个LED驱动器与所述控制器连接。
在一种可能的设计中，所述LED驱动器还用于：
存储获取到的控制数据；
在获取到预设长度的控制数据后，将数据收集完成标志设置为第二状态值，以阻止存储所述预设长度的控制数据之后的数据。
在一种可能的设计中，每一LED驱动器对应的数据包还包括位于控制数据前的起始代码字段；
所述LED驱动器在存储获取到的控制数据时，具体用于：检测起始代码字段是否正确；若正确，则存储所述起始代码字段之后的控制数据；若不正确，则舍弃所述起始代码字段之后的控制数据。
在一种可能的设计中，所述LED驱动器还用于：
若所述起始代码字段不正确，和/或，在预设时间内未接收到数据，则初始化所述LED驱动器。
在一种可能的设计中，每一LED驱动器与至少一LED连接；
所述控制数据为亮度数据，用于供所述LED驱动器对与其连接的LED进行亮度控制；
或者，所述控制数据为命令数据，用于对所述LED驱动器的状态进行控制。
在一种可能的设计中，所述数据包还包括：设置在所述控制数据之前的指示位；
所述指示位用于指示所述控制数据是亮度数据还是命令数据。
在一种可能的设计中，所述命令数据包括下述至少一项：
复位命令，用于将各LED驱动器的传输标志设置为第一状态值；
开始命令，用于将各LED驱动器的传输标志设置为非第一状态值；
显示命令，用于控制各LED驱动器根据对应的亮度数据驱动LED工作；
看门狗控制命令，用于控制各LED驱动器的看门狗。
在一种可能的设计中，所述控制器还用于：在发送亮度数据之前，先发送复位命令，再发送开始命令。
第二方面，本发明实施例提供一种电子设备，包括第一方面任一项所述的LED控制系统以及多个LED；
所述LED控制系统用于对所述多个LED进行控制。
第三方面，本发明实施例提供一种数据传输方法，应用于级联的多个LED驱动器中的任一LED驱动器，所述LED驱动器包括传输开关，所述方法包括：
从控制器或前一LED驱动器获取数据信号，所述数据信号包括依次排列的多个LED驱动器对应的数据包，每一LED驱动器对应的数据包包括所述LED驱动器对应的控制数据以及结束位；
在获取到预设长度的控制数据后，检测结束位是否为预设数值；
若所述结束位为预设数值且存在下一LED驱动器，则将传输标志设置为第一状态值；其中，在所述传输标志为第一状态值时，所述传输开关打开，以将所述结束位后的数据信号传输给下一驱动器；在所述传输标志不为第一状态值时，所述传输开关断开。
第四方面，本发明实施例提供一种数据传输方法，应用于控制器，所述方法包括：
确定多个级联的LED驱动器对应的数据信号，所述数据信号包括依次排列的多个LED驱动器对应的数据包，每一LED驱动器对应的数据包包括所述LED驱动器对应的控制数据以及结束位；
向所述多个级联的LED驱动器发送数据信号，以使所述LED驱动器从所述控制器或前一LED驱动器获取预设长度的控制数据，并检测结束位是否为预设数值，若检测到结束位为预设数值且存在下一LED驱动器，则将传输标志设置为第一状态值；在所述传输标志为第一状态值时，所述LED驱动器的传输开关打开，以将所述结束位后的数据信号传输给下一驱动器；在所述传输标志不为第一状态值时，所述传输开关断开。
第五方面，本发明实施例提供一种LED驱动器，包括：至少一个处理器和存储器；
所述存储器存储计算机执行指令；
所述至少一个处理器执行所述存储器存储的计算机执行指令，使得所述至少一个处理器执行如第三方面所述的方法。
第六方面，本发明实施例提供一种控制器，包括：至少一个处理器和存储器；
所述存储器存储计算机执行指令；
所述至少一个处理器执行所述存储器存储的计算机执行指令，使得所述至少一个处理器执行如第四方面所述的方法。
第七方面，本发明实施例提供一种计算机可读存储介质，所述计算机可读存储介质中存储有计算机执行指令，当处理器执行所述计算机执行指令时，实现如第三方面或第四方面所述的方法。
本发明实施例提供的LED控制系统、设备、方法及存储介质，可以通过控制器向多个级联的LED驱动器发送数据信号，所述数据信号包括依次排列的多个LED驱动器对应的数据包，每一LED驱动器对应的数据包包括所述LED驱动器对应的控制数据以及结束位，所述LED驱动器用于从所述控制器或前一LED驱动器获取预设长度的控制数据，并检测结束位是否为预设数值，若检测到结束位为预设数值且存在下一LED驱动器，则将传输标志设置为第一状态值，在所述传输标志为第一状态值时，所述LED驱动器的传输开关打开，以将所述结束位后的数据信号传输给下一驱动器，在所述传输标志不为第一状态值时，所述传输开关断开，从而通过级联的方式实现数据传输，无需事先设置LED驱动器的地址，步骤简单，效率和准确率较高，并且简化了布线，有效降低成本。
附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作一简单地介绍，显而易见地，下面描述中的附图是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动性的前提下，还可以根据这些附图获得其他的附图。
图1为本发明实施例提供的一种LED控制系统的应用场景示意图；
图2为本发明实施例提供的一种LED控制系统的结构示意图；
图3为本发明实施例提供的一种数据信号传输的过程示意图；
图4为本发明实施例提供的一种采集数据信号的原理示意图；
图5为本发明实施例提供的一种LED驱动器的工作原理示意图；
图6为本发明实施例提供的一种LED驱动器的工作时序图；
图7为本发明实施例提供的一种数据信号传输过程中传输标志的变化示意图；
图8为本发明实施例提供的一种起始代码字段的示意图；
图9为本发明实施例提供的一种LED驱动器的传输标志的时序示意图；
图10为本发明实施例提供的一种对LED进行控制的流程示意图。
具体实施方式
为使本发明实施例的目的、技术方案和优点更加清楚，下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
在本申请实施例中使用的术语是仅仅出于描述特定实施例的目的，而非旨在限制本发明。在本申请实施例中所使用的单数形式的“一种”和“该”也旨在包括多数形式，除非上下文清楚地表示其他含义。
应当理解，本文中使用的术语“和/或”仅仅是一种描述关联对象的关联关系，表示可以存在三种关系，例如，A和/或B，可以表示：单独存在A，同时存在A和B，单独存在B这三种情况。另外，本文中字符“/”，一般表示前后关联对象是一种“或”的关系。
取决于语境，如在此所使用的词语“如果”、“若”可以被解释成为“在……时”或“当……时”或“响应于确定”或“响应于检测”。类似地，取决于语境，短语“如果确定”或“如果检测(陈述的条件或事件)”可以被解释成为“当确定时”或“响应于确定”或“当检测(陈述的条件或事件)时”或“响应于检测(陈述的条件或事件)”。
还需要说明的是，术语“包括”、“包含”或者其任何其他变体意在涵盖非排他性的包含，从而使得包括一系列要素的商品或者系统不仅包括那些要素，而且还包括没有明确列出的其他要素，或者是还包括为这种商品或者系统所固有的要素。在没有更多限制的情况下，由语句“包括一个……”限定的要素，并不排除在包括所述要素的商品或者系统中还存在另外的相同要 素。
图1为本发明实施例提供的一种LED控制系统的应用场景示意图。如图1所示，基板10上设置有多个LED20，LED20由LED驱动器30来控制，图中基板10上的各正方形表示LED20，长方形表示LED驱动器30。为了简便视图，图中仅示出了部分LED驱动器30。
每个LED驱动器30可以控制一个或多个LED20，图1中以虚线框的形式表示了LED驱动器30控制LED20的具体方案，对于每个LED驱动器30来说，可以与周围的四个LED20，即所述LED驱动器30所在虚线框内的四个LED20分别连接，并控制所连接的四个LED20的亮度。
在本发明实施例中，多个LED驱动器30可以呈级联(Cascade)的状态，控制器40发送的数据信号在各个LED驱动器30之间依次传递，通过在数据信号中设置结束位，使得每个LED驱动器30可以确定属于自身的信号是否被正常接收完毕，从而提高数据传输的准确性，满足级联状态下的数据传输需求。
图2为本发明实施例提供的一种LED控制系统的结构示意图。如图2所示，所述LED控制系统可以包括：控制器以及多个级联的LED驱动器。所述控制器可以作为主设备(Master)，LED驱动器可以作为从设备(Slave)，由控制器对LED驱动器进行控制。
可选的，任意两相邻的LED驱动器之间可以通过单一信号线连接，所述多个级联的LED驱动器中的第一个LED驱动器与所述控制器连接。
如图2所示，多个LED驱动器之间串联起来，第一个LED驱动器与控制器连接，控制器的输出作为第一个LED驱动器的输入，其后每一个LED驱动器的输入为前一个LED驱动器的输出。
所述控制器用于：向所述多个级联的LED驱动器发送数据信号，所述数据信号包括依次排列的多个LED驱动器对应的数据包，每一LED驱动器对应的数据包包括所述LED驱动器对应的控制数据以及结束位。
所述LED驱动器包括传输开关；所述LED驱动器用于：从所述控制器或前一LED驱动器获取预设长度的控制数据，并检测结束位是否为预设数值；若检测到结束位为预设数值且存在下一LED驱动器，则将传输标志(Bypass flag)设置为第一状态值；在所述传输标志为第一状态值时，所述传输开关打 开，以将所述结束位后的数据信号传输给下一驱动器；在所述传输标志不为第一状态值时，所述传输开关断开。
具体来说，所述控制器用于发送数据信号，所述数据信号可以包括多个LED驱动器对应的数据包，在所述数据信号中，数据包的排列顺序与LED驱动器的级联顺序一致。也就是说，所述数据信号中，第i个数据包为第i个LED驱动器对应的数据包，其中i在0至N之间取值，N为LED驱动器的个数。
每个LED驱动器用于获取自身对应的数据包，并根据所述对应的数据包进行相应的操作。每个数据包均可以包括控制数据以及结束位，控制数据可以为预设长度，且控制数据可以设置在结束位的前面。结束位必须是预设数值，才向下继续传递数据信号。
为了便于描述，本发明实施例中以每个LED驱动器对应的控制数据的长度为4、所述预设数值为0为例来进行说明。
每个LED驱动器在获取到4位控制数据之后，可以检测第5位数据即结束位是否为0，若为0，则将结束位之后的数据信号传递给下一LED驱动器，若不为0，则可以不向下传递。
图3为本发明实施例提供的一种数据信号传输的过程示意图。如图3所示，控制器发出的数据信号可以为1010 0 1001 0 001……。第一个LED驱动器采集到4位控制数据为1010，然后，检测第5位即结束位为0，符合要求，可以将后面的数据向下传递给第二个LED驱动器。因此，第一个LED驱动器的输出的信号为1001 0 001……。
第二个LED驱动器采集到4位控制数据1001后，检测第5位即结束位为0，符合要求，可以将后面的数据向下传递给第三个LED驱动器。因此，第二个LED驱动器的输出的信号为001……。以此类推，直至数据被传输至最后一个LED驱动器，从而可以完成全部LED驱动器的配置。
本实施例中，所述LED驱动器可以在检测到结束位为预设数值时，将传输标志设置为第一状态值，以将所述结束位后的数据信号传输给所述下一LED驱动器。在所述传输标志为第一状态值时，LED驱动器控制所述传输开关打开，以向所述下一LED驱动器传输数据；在所述传输标志不为第一状态值时，LED驱动器控制所述传输开关断开，从而不向后传递数据。
以上通过具体的示例描述了本发明实施例的工作原理及过程。本领域技术人员可以理解的是，以上示例可以根据实际需要来调整，例如，可以设置结束位为1才代表数据是正确的，或者，可以设置相邻两LED驱动器之间通过两根或更多的数据线连接，以一次传输更多的数据，提高数据传输效率。
本实施例提供的LED控制系统，包括控制器以及多个级联的LED驱动器，其中，所述控制器用于向所述多个级联的LED驱动器发送数据信号，所述数据信号包括依次排列的多个LED驱动器对应的数据包，每一LED驱动器对应的数据包包括所述LED驱动器对应的控制数据以及结束位，所述LED驱动器用于从所述控制器或前一LED驱动器获取预设长度的控制数据，并检测结束位是否为预设数值，若检测到结束位为预设数值且存在下一LED驱动器，则将传输标志设置为第一状态值，在所述传输标志为第一状态值时，所述LED驱动器的传输开关打开，以将所述结束位后的数据信号传输给下一驱动器，在所述传输标志不为第一状态值时，所述传输开关断开，从而通过级联的方式实现数据传输，无需事先设置LED驱动器的地址，步骤简单，效率和准确率较高，并且简化了布线，有效降低成本。
可选的，所述LED驱动器还可以用于：存储获取到的控制数据；在获取到预设长度的控制数据后，将数据收集完成标志(Data received flag)设置为第二状态值，以阻止存储所述预设长度的控制数据之后的数据。
为了便于更好地理解本发明实施例的方案，下面首先描述采集数据信号的过程。
图4为本发明实施例提供的一种采集数据信号的原理示意图。如图4所示，一位(bit)数据的传输可以占用t 0时间，t 0可以分解为t 1、t 2、t 3、t 4四个时段，t 1时段为高电平，t 4时段为低电平，t 2和t 3时段用于传输数据，如果t 2和t 3时段为高电平，那么传输的数据为1，如果t 2和t 3时段为低电平，那么传输的数据为0。表1示出了各时段对应的时长示例。
表1
时段 名称 时长
t 0 1比特时期(1bit period) 6usec
t 1 前置时间(Pre time)/时钟边缘(Clock edge) 1usec
t 2 数据设置时间(Setup time for data) 2usec
t 3 数据保持时间(Hold time for data) 2usec
t 4 后期时间(Post time)/返回边缘(Return edge) 1usec
如图4和表1所示，LED驱动器可以在t1时刻开始时，检测上升沿(Detect rising point)，然后，经过t 0/2即3微秒(usec)后，在固定延迟点采样数据(Sample the data at fixed delayed point)，从而确定当前数据是0还是1。
图4中向上的箭头代表了检测上升沿或者数据采样的时刻，通过图4可以看出，t 2和t 3时段的电位保持一致，在t 2和t 3之间进行采样，能够有效保证采样数据的正确性。通过图4所示的方案可以实现控制器与LED驱动器之间以及各相邻LED驱动器之间的数据传输。
图5为本发明实施例提供的一种LED驱动器的工作原理示意图。如图5所示，所述LED驱动器可以包括：
输入位检测模块(Input bit detection part)，用于检测输入信号(Input signal)的上升沿；
时钟生成模块(Clock generation part)，用于产生时钟信号，从而通过时钟信号实现输入信号的检测；
看门狗模块；
t 0/2延时模块(t 0/2 time delay part)，用于延迟t 0/2的时间；
数据捕获模块(Data Capture part)，用于在t 0/2处捕获数据，确定传输的数据是1还是0；
M位存储模块(Mbit Memory part)，用于存储预设长度为M位的控制数据；
M位接收检测模块(Mbit receive detection part)，用于判断接收的数据是否达到M位，并在达到M位之后，将数据收集完成标志设置为第二状态值，从而控制M位存储模块不再继续存储后面的数据；另外，M位接收检测模块还可以在确定接收到的数据达到M位后，判断第M+1位是否为0，若是，则将传输标志设置为第一状态值例如1；
数据选择器(MUX)，用于在传输标志为0时，不向后传递数据，在传输标志为1时，向后传递数据。数据选择器在这里可以作为传输开关来使用，通过传输开关可以实现对数据是否向后传递的控制。
图6为本发明实施例提供的一种LED驱动器的工作时序图。如图6所示， 输入信号中每一位数据占用t 0时间，在输入信号线上检测相当于数据开始的上升沿，具体可以利用2个DFF(Data Flip-Flop/Delay Flip-Flop，D触发器)来实现检测，时钟生成模块生成的时钟信号要快于将t1取样至少两次的速度。
输入位检测标志(Input bit detection flag)，等于第一次采样结果和第二次采样结果的相反值之间相与的结果，即输入位检测标志＝1 st&not 2 nd。因此，只有当第一次采样为高电平，第二次采样为低电平时，输入位检测标志才为1。
在输入位检测标志变为1后，延迟t 0/2，数据捕获标志(Data capture flag)变为1，以对输入的信号进行捕获(Capture)。捕获的数据按照顺序存储到M位存储模块。
在捕获到M位后，改变数据收集完成标志以阻止进一步存储。在第M+1位将传输标志变为1，使得数据选择器将数据信号向后传递。第M+1位必须为0。
图7为本发明实施例提供的一种数据信号传输过程中传输标志的变化示意图。图7是在图3的基础上，增加了传输标志的变化。如图7所示，控制器发出的数据信号可以为1010 0 1001 0 001……，每一位数据可以按照图3所示的方式传输。第一个LED驱动器采集到4位控制数据为1010，然后，检测第5位即结束位为0，符合要求，可以将传输标志升高为1，从而将后面的数据向下传递。因此，第一个LED驱动器的输出的信号为1001 0 001……。
第二个LED驱动器采集到4位控制数据1001后，检测第5位即结束位为0，符合要求，可以将传输标志升高为1，从而将后面的数据向下传递给第三个LED驱动器。因此，第二个LED驱动器的输出的信号为001……。以此类推，直至数据被传输至最后一个LED驱动器，从而可以完成全部LED驱动器的配置。
通过以上所示的方案，可以实现通过各标志来对数据传输过程进行控制。具体来说，传输标志可以实现对是否将数据信号向后传输的控制，能够有效防止在传输过程中出现错误，提高传输的准确率和效率。通过传输标志控制传输开关例如数据选择器等来实现数据的向后传递，结构简单，易于实现。在获取到预设长度的控制数据后，通过改变数据收集完成标志以阻止存储所述预设长度的控制数据之后的数据，能够保证LED驱动器仅存储属于自身的 数据，有效减少存储空间的占用，且便于后续根据存储的数据对LED进行控制。
在上述实施例提供的技术方案的基础上，可选的是，每一LED驱动器对应的数据包还可以包括位于控制数据前的起始代码(Preamble code)字段。
所述LED驱动器在存储获取到的控制数据时，具体可以用于：检测起始代码字段是否正确；若正确，则存储所述起始代码字段之后的控制数据；若不正确，则舍弃所述起始代码字段之后的控制数据。
图8为本发明实施例提供的一种起始代码字段的示意图。如图8所示，起始代码可以为0xA6，即10100110，或者也可以为其它预设的数值。在起始代码字段后再开始传输控制数据，可以实现内部伪装的芯片使能(Internal pseudo chip enable)，还可以避免面板噪声导致的写入错误(Error-writing by Panel Noise)。
可选的，所述LED驱动器还可以用于：若所述起始代码字段不正确，和/或，在预设时间内未接收到数据，则初始化所述LED驱动器。这里在预设时间内未接收到数据，可以是指在获取到起始代码字段后预设时间内未接收到数据，也可以是每隔预设时间进行检测，若未接收到数据，则进行初始化，提高LED驱动器的稳定性。
在上述实施例提供的技术方案的基础上，可选的是，每个LED驱动器接收到数据包中的控制数据为亮度数据，用于供所述LED驱动器对与其连接的LED进行亮度控制；或者，所述控制数据为命令数据，用于对所述LED驱动器的状态进行控制。
可选的，所述数据包还可以包括：设置在所述控制数据之前的指示位，所述指示位用于指示所述控制数据是亮度数据还是命令数据，保证传输的数据被LED驱动器正常使用。
具体来说，可以定义数据包＝起始代码字段(8位)+指示位(1位)+亮度数据(48位)/命令数据(8位)+结束位(1位)，共计58位/18位。
其中，所述指示位为1时，代表数据包中是命令数据，指示位为0时，代表数据包中是亮度数据，结束位必须是0才能改变传输标志。即，在传输命令数据时，数据包为：8位起始代码字段+“0”+8位命令数据+“0”。在传输亮度数据时，数据包为：8位起始代码字段+“1”+48位亮度数据+“0”。
以上各部分的位数可以根据应用条件发生变化。例如，48位亮度数据可以应用于控制4个LED且每个LED对应12位亮度数据的情况。如果使用16位的亮度数据控制单个LED,那么数据包中总亮度数据可能会达到64位。
可选的，所述命令数据可以包括下述至少一项：
复位命令，用于将各LED驱动器的传输标志设置为第一状态值，以使全部LED驱动器不能向后传递数据；
开始命令，用于将各LED驱动器的传输标志设置为非第一状态值，以使全部LED驱动器可以向后传递数据；
显示命令，用于控制各LED驱动器根据对应的亮度数据驱动LED工作；
看门狗控制命令，用于控制各LED驱动器的看门狗，例如所述看门狗控制命令可以具体为看门狗清零命令，从而使看门狗计数清零。此外，复位命令、开始命令和显示命令等也可以实现清除看门狗计数。
每种命令对应的具体数值可以根据实际需要来设置。表2示出了本发明实施例提供的一种命令数据的示例。
表2
Figure PCTCN2020112821-appb-000001
可选的，所述控制器还可以在发送亮度数据之前，先发送复位命令，再发送开始命令。
图9为本发明实施例提供的一种LED驱动器的传输标志的时序示意图。图9中从上至下分别为第一个至第四个LED驱动器的传输标志。如图9所示，发送复位命令后，全部LED驱动器的传输标志被设置为1，允许信号向后传输。然后，可以发送开始命令，开始命令会将各LED驱动器的传输标志设置为0，所有LED驱动器都不允许向后传输信号。
在开始命令之后，发送包含有亮度数据的数据包，图中的矩形框表示各LED驱动器在自身的传输标志为0时接收到的数据包，矩形框中的数字表示该数据包是控制器发出的数据信号中的第几个数据包。
第一个LED驱动器在获取到对应的亮度数据后，检测到结束位为0，此时将传输标志置1，从而可以向第二个LED驱动器传递数据信号。类似的，第二个LED驱动器在获取到对应的亮度数据后，检测到结束位为0，将传输标志置1，从而可以向第三个LED驱动器传递数据信号，以此类推，直到所有的LED驱动器都获取到亮度数据且全部的传输标志都被设置为1。
全部LED驱动器获取到亮度数据后，可以通过显示命令使得LED驱动器根据获取到的数据对LED的显示进行控制。类似的，在传输下一轮数据时，可以先发送开始命令，将各LED驱动器的传输标志设置为0，所有LED驱动器都不允许向后传输，然后再传输亮度数据。
图10为本发明实施例提供的一种对LED进行控制的流程示意图。如图10所示，在上电后，或者在有看门狗清零的控制命令时，可以通过复位命令对LED驱动器进行控制，使得全部LED驱动器允许向后传递，并且重置看门狗计数。
然后，判断是否出现同步(Vsync)信号，若没有出现，则继续等待，反之，则发送开始命令，将全部LED驱动器更改为不允许向后传递，并重置看门狗计数，这样只有第一个LED驱动器可以接收到数据。
进而，将数据打包发送给LED驱动器，LED驱动器连续接收完自身对应的数据后，更改为允许向后传递，内部更新被锁定。多个LED驱动器逐个接收数据，直到最后一个LED驱动器也接收完毕数据，所有的LED驱动器都 变为允许向后传递的模式。在整个过程中，LED驱动器接收到命令数据或亮度数据后，看门狗计数可以被清零。
最后，发送显示命令，启用LED的亮度数据，并继续等待同步信号。通过图10所示方案可以有效实现对LED的控制。
本发明实施例还提供一种电子设备，包括上述任一实施例所述的LED控制系统以及多个LED；所述LED控制系统用于对所述多个LED进行控制。
可选的，所述电子设备可以为液晶电视等任意设置有LED的设备，本发明实施例对此不作限制。
本实施例提供的电子设备中各部件的结构、功能和连接关系以及具体实现原理、过程和效果可以参见上述实施例，此处不再赘述。
本发明实施例还提供一种数据传输方法，应用于级联的多个LED驱动器中的任一LED驱动器，所述LED驱动器包括传输开关，所述方法可以包括：从控制器或前一LED驱动器获取数据信号，所述数据信号包括依次排列的多个LED驱动器对应的数据包，每一LED驱动器对应的数据包包括所述LED驱动器对应的控制数据以及结束位；在获取到预设长度的控制数据后，检测结束位是否为预设数值；若所述结束位为预设数值且存在下一LED驱动器，则将传输标志设置为第一状态值；其中，在所述传输标志为第一状态值时，所述传输开关打开，以将所述结束位后的数据信号传输给下一驱动器；在所述传输标志不为第一状态值时，所述传输开关断开。
本发明实施例还提供一种LED驱动器，包括：至少一个处理器和存储器；所述存储器存储计算机执行指令；所述至少一个处理器执行所述存储器存储的计算机执行指令，使得所述至少一个处理器执行如上所述的应用于LED驱动器的方法。
本发明实施例还提供一种数据传输方法，应用于控制器，所述方法包括：确定多个级联的LED驱动器对应的数据信号，所述数据信号包括依次排列的多个LED驱动器对应的数据包，每一LED驱动器对应的数据包包括所述LED驱动器对应的控制数据以及结束位；向所述多个级联的LED驱动器发送数据信号，以使所述LED驱动器从所述控制器或前一LED驱动器获取预设长度的控制数据，并检测结束位是否为预设数值，若检测到结束位为预设数值且存在下一LED驱动器，则将传输标志设置为第一状态值；在所述传输标志为 第一状态值时，所述LED驱动器的传输开关打开，以将所述结束位后的数据信号传输给下一驱动器；在所述传输标志不为第一状态值时，所述传输开关断开。
本发明实施例还提供一种控制器，包括：至少一个处理器和存储器；所述存储器存储计算机执行指令；所述至少一个处理器执行所述存储器存储的计算机执行指令，使得所述至少一个处理器执行如上所述的应用于控制器的数据传输方法。
在其他可选的实现方式中，所述LED驱动器和/或所述控制器也可以通过硬件电路来实现。
本发明实施例还提供一种计算机可读存储介质，所述计算机可读存储介质中存储有计算机执行指令，当处理器执行所述计算机执行指令时，实现上述任一方法。
本发明实施例提供的方法、LED驱动器、控制器和计算机可读存储介质的具体工作原理、过程和效果可以参见上述实施例，此处不再赘述。
在本发明所提供的几个实施例中，应该理解到，所揭露的设备和方法，可以通过其它的方式实现。例如，以上所描述的设备实施例仅仅是示意性的，例如，所述模块的划分，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式，例如多个模块可以结合或者可以集成到另一个系统，或一些特征可以忽略，或不执行。另一点，所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口，装置或模块的间接耦合或通信连接，可以是电性，机械或其它的形式。
所述作为分离部件说明的模块可以是或者也可以不是物理上分开的，作为模块显示的部件可以是或者也可以不是物理单元，即可以位于一个地方，或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部模块来实现本实施例方案。
另外，在本发明各个实施例中的各功能模块可以集成在一个处理单元中，也可以是各个模块单独物理存在，也可以两个或两个以上模块集成在一个单元中。上述模块成的单元既可以采用硬件的形式实现，也可以采用硬件加软件功能单元的形式实现。
上述以软件功能模块的形式实现的集成的模块，可以存储在一个计算机 可读取存储介质中。上述软件功能模块存储在一个存储介质中，包括若干指令用以使得一台计算机设备(可以是个人计算机，服务器，或者网络设备等)或处理器执行本申请各个实施例所述方法的部分步骤。
应理解，上述处理器可以是中央处理单元(Central Processing Unit，简称CPU)，还可以是其他通用处理器、数字信号处理器(Digital Signal Processor，简称DSP)、专用集成电路(Application Specific Integrated Circuit，简称ASIC)等。通用处理器可以是微处理器或者该处理器也可以是任何常规的处理器等。结合发明所公开的方法的步骤可以直接体现为硬件处理器执行完成，或者用处理器中的硬件及软件模块组合执行完成。
存储器可能包含高速RAM存储器，也可能还包括非易失性存储NVM，例如至少一个磁盘存储器，还可以为U盘、移动硬盘、只读存储器、磁盘或光盘等。
总线可以是工业标准体系结构(Industry Standard Architecture，简称ISA)总线、外部设备互连(Peripheral Component Interconnect，简称PCI)总线或扩展工业标准体系结构(Extended Industry Standard Architecture，简称EISA)总线等。总线可以分为地址总线、数据总线、控制总线等。为便于表示，本申请附图中的总线并不限定仅有一根总线或一种类型的总线。
上述存储介质可以是由任何类型的易失性或非易失性存储设备或者它们的组合实现，如静态随机存取存储器(SRAM)，电可擦除可编程只读存储器(EEPROM)，可擦除可编程只读存储器(EPROM)，可编程只读存储器(PROM)，只读存储器(ROM)，磁存储器，快闪存储器，磁盘或光盘。存储介质可以是通用或专用计算机能够存取的任何可用介质。
一种示例性的存储介质耦合至处理器，从而使处理器能够从该存储介质读取信息，且可向该存储介质写入信息。当然，存储介质也可以是处理器的组成部分。处理器和存储介质可以位于专用集成电路(Application Specific Integrated Circuits，简称ASIC)中。当然，处理器和存储介质也可以作为分立组件存在于电子设备或主控设备中。
本领域普通技术人员可以理解：实现上述各方法实施例的全部或部分步骤可以通过程序指令相关的硬件来完成。前述的程序可以存储于一计算机可读取存储介质中。该程序在执行时，执行包括上述各方法实施例的步骤；而 前述的存储介质包括：ROM、RAM、磁碟或者光盘等各种可以存储程序代码的介质。
最后应说明的是：以上各实施例仅用以说明本发明的技术方案，而非对其限制；尽管参照前述各实施例对本发明进行了详细的说明，本领域的普通技术人员应当理解：其依然可以对前述各实施例所记载的技术方案进行修改，或者对其中部分或者全部技术特征进行等同替换；而这些修改或者替换，并不使相应技术方案的本质脱离本发明各实施例技术方案的范围。

Claims (15)

  1. 一种LED控制系统，其特征在于，包括：控制器以及多个级联的LED驱动器；
    所述控制器用于：向所述多个级联的LED驱动器发送数据信号，所述数据信号包括依次排列的多个LED驱动器对应的数据包，每一LED驱动器对应的数据包包括所述LED驱动器对应的控制数据以及结束位；
    所述LED驱动器包括传输开关；所述LED驱动器用于：从所述控制器或前一LED驱动器获取预设长度的控制数据，并检测结束位是否为预设数值；若检测到结束位为预设数值且存在下一LED驱动器，则将传输标志设置为第一状态值；在所述传输标志为第一状态值时，所述传输开关打开，以将所述结束位后的数据信号传输给下一驱动器；在所述传输标志不为第一状态值时，所述传输开关断开。
  2. 根据权利要求1所述的系统，其特征在于，任意两相邻的LED驱动器之间通过单一信号线连接，所述多个级联的LED驱动器中的第一个LED驱动器与所述控制器连接。
  3. 根据权利要求1所述的系统，其特征在于，所述LED驱动器还用于：
    存储获取到的控制数据；
    在获取到预设长度的控制数据后，将数据收集完成标志设置为第二状态值，以阻止存储所述预设长度的控制数据之后的数据。
  4. 根据权利要求3所述的系统，其特征在于，每一LED驱动器对应的数据包还包括位于控制数据前的起始代码字段；
    所述LED驱动器在存储获取到的控制数据时，具体用于：检测起始代码字段是否正确；若正确，则存储所述起始代码字段之后的控制数据；若不正确，则舍弃所述起始代码字段之后的控制数据。
  5. 根据权利要求4所述的系统，其特征在于，所述LED驱动器还用于：
    若所述起始代码字段不正确，和/或，在预设时间内未接收到数据，则初始化所述LED驱动器。
  6. 根据权利要求1-5任一项所述的系统，其特征在于，每一LED驱动器与至少一LED连接；
    所述控制数据为亮度数据，用于供所述LED驱动器对与其连接的LED 进行亮度控制；
    或者，所述控制数据为命令数据，用于对所述LED驱动器的状态进行控制。
  7. 根据权利要求6所述的系统，其特征在于，所述数据包还包括：设置在所述控制数据之前的指示位；
    所述指示位用于指示所述控制数据是亮度数据还是命令数据。
  8. 根据权利要求6所述的系统，其特征在于，所述命令数据包括下述至少一项：
    复位命令，用于将各LED驱动器的传输标志设置为第一状态值；
    开始命令，用于将各LED驱动器的传输标志设置为非第一状态值；
    显示命令，用于控制各LED驱动器根据对应的亮度数据驱动LED工作；
    看门狗控制命令，用于控制各LED驱动器的看门狗。
  9. 根据权利要求8所述的系统，其特征在于，所述控制器还用于：在发送亮度数据之前，先发送复位命令，再发送开始命令。
  10. 一种电子设备，其特征在于，包括权利要求1-9任一项所述的LED控制系统以及多个LED；
    所述LED控制系统用于对所述多个LED进行控制。
  11. 一种数据传输方法，其特征在于，应用于级联的多个LED驱动器中的任一LED驱动器，所述LED驱动器包括传输开关，所述方法包括：
    从控制器或前一LED驱动器获取数据信号，所述数据信号包括依次排列的多个LED驱动器对应的数据包，每一LED驱动器对应的数据包包括所述LED驱动器对应的控制数据以及结束位；
    在获取到预设长度的控制数据后，检测结束位是否为预设数值；
    若所述结束位为预设数值且存在下一LED驱动器，则将传输标志设置为第一状态值；其中，在所述传输标志为第一状态值时，所述传输开关打开，以将所述结束位后的数据信号传输给下一驱动器；在所述传输标志不为第一状态值时，所述传输开关断开。
  12. 一种数据传输方法，其特征在于，应用于控制器，所述方法包括：
    确定多个级联的LED驱动器对应的数据信号，所述数据信号包括依次排列的多个LED驱动器对应的数据包，每一LED驱动器对应的数据包包括所 述LED驱动器对应的控制数据以及结束位；
    向所述多个级联的LED驱动器发送数据信号，以使所述LED驱动器从所述控制器或前一LED驱动器获取预设长度的控制数据，并检测结束位是否为预设数值，若检测到结束位为预设数值且存在下一LED驱动器，则将传输标志设置为第一状态值；在所述传输标志为第一状态值时，所述LED驱动器的传输开关打开，以将所述结束位后的数据信号传输给下一驱动器；在所述传输标志不为第一状态值时，所述传输开关断开。
  13. 一种LED驱动器，其特征在于，包括：至少一个处理器和存储器；
    所述存储器存储计算机执行指令；
    所述至少一个处理器执行所述存储器存储的计算机执行指令，使得所述至少一个处理器执行如权利要求11所述的方法。
  14. 一种控制器，其特征在于，包括：至少一个处理器和存储器；
    所述存储器存储计算机执行指令；
    所述至少一个处理器执行所述存储器存储的计算机执行指令，使得所述至少一个处理器执行如权利要求12所述的方法。
  15. 一种计算机可读存储介质，其特征在于，所述计算机可读存储介质中存储有计算机执行指令，当处理器执行所述计算机执行指令时，实现如权利要求11或12所述的方法。
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111540318B (zh) * 2020-07-10 2020-10-23 北京显芯科技有限公司 Led控制系统、设备、方法及存储介质
CN113889031A (zh) * 2021-09-30 2022-01-04 东莞阿尔泰显示技术有限公司 新型显示模组的显示数据分配方法及系统
CN116406048A (zh) * 2022-01-05 2023-07-07 Lx半导体科技有限公司 Led驱动电路和显示装置
CN114495814B (zh) * 2022-03-02 2023-05-05 深圳市绿源半导体技术有限公司 Led显示传输系统
CN115966182B (zh) * 2022-12-29 2024-02-09 北京显芯科技有限公司 一种数据处理方法、led控制系统及电子设备
CN116798362B (zh) * 2023-06-30 2024-01-16 北京显芯科技有限公司 一种显示信号的采样方法、设备、装置及显示设备

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1519811A (zh) * 2003-01-29 2004-08-11 �����ɷ� 包括多个级联驱动器集成电路的显示装置
US20090284445A1 (en) * 2008-05-15 2009-11-19 Sheng-Chang Kuo Led data input scheme with sequential scan method and cascade connection for light emitting diode (led) display system
CN101783116A (zh) * 2010-03-01 2010-07-21 友达光电股份有限公司 一种用于液晶显示器背光模块中的led驱动装置
CN101916543A (zh) * 2010-07-07 2010-12-15 杭州士兰微电子股份有限公司 一种led显示系统的数据通信方法
CN102472906A (zh) * 2009-08-31 2012-05-23 夏普株式会社 驱动装置、背光源单元和图像显示装置
CN104517569A (zh) * 2014-12-15 2015-04-15 深圳市明微电子股份有限公司 串联显示系统及其数据传输方法
CN105246186A (zh) * 2014-07-08 2016-01-13 苏州卓能微电子技术有限公司 一种led驱动芯片输出电流的精确控制技术
CN107068072A (zh) * 2017-06-01 2017-08-18 青岛海信电器股份有限公司 背光亮度控制装置、图像显示装置
CN111540318A (zh) * 2020-07-10 2020-08-14 北京显芯科技有限公司 Led控制系统、设备、方法及存储介质

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100968865B1 (ko) * 2007-12-17 2010-07-09 주식회사 애트랩 시리얼 통신 시스템 및 이의 ｉｄ 부여방법
JP2009294282A (ja) * 2008-06-03 2009-12-17 Videocon Industries Ltd バックライトおよび液晶ディスプレイ
CN102129838B (zh) * 2011-04-28 2013-01-23 深圳市天微电子有限公司 Led显示数据的处理方法及装置

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1519811A (zh) * 2003-01-29 2004-08-11 �����ɷ� 包括多个级联驱动器集成电路的显示装置
US20090284445A1 (en) * 2008-05-15 2009-11-19 Sheng-Chang Kuo Led data input scheme with sequential scan method and cascade connection for light emitting diode (led) display system
CN102472906A (zh) * 2009-08-31 2012-05-23 夏普株式会社 驱动装置、背光源单元和图像显示装置
CN101783116A (zh) * 2010-03-01 2010-07-21 友达光电股份有限公司 一种用于液晶显示器背光模块中的led驱动装置
CN101916543A (zh) * 2010-07-07 2010-12-15 杭州士兰微电子股份有限公司 一种led显示系统的数据通信方法
CN105246186A (zh) * 2014-07-08 2016-01-13 苏州卓能微电子技术有限公司 一种led驱动芯片输出电流的精确控制技术
CN104517569A (zh) * 2014-12-15 2015-04-15 深圳市明微电子股份有限公司 串联显示系统及其数据传输方法
CN107068072A (zh) * 2017-06-01 2017-08-18 青岛海信电器股份有限公司 背光亮度控制装置、图像显示装置
CN111540318A (zh) * 2020-07-10 2020-08-14 北京显芯科技有限公司 Led控制系统、设备、方法及存储介质

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