A method and device for reading the address of a light point of an LED light string

Abstract

The present invention discloses a method and device for reading the address of a light point of an LED light string. The method comprises: a controller sending an address matching instruction to a light point; wherein the address matching instruction includes matching data; the controller controlling the light point to calculate the light point address and the matching data, and lighting or extinguishing the LED according to the calculation result; the controller controlling a photoreceptor to capture the on / off status information of the light point, and reading the light point address according to the on / off status information. The present invention adopts a parallel connection method of light point data lines in the control method of the LED light string, which can directly obtain the light point address of the light point. When a light point is damaged, the address of the light point adjacent to the damaged light point can be directly obtained, thereby obtaining the light point address of the damaged light point without disassembling and installing the light point.

Description

Technical Field

[0001] The present invention relates to the technical field of LED light strings, and in particular to a method and device for reading the light point addresses of an LED light string. Background Art

[0002] LED light strings are commonly controlled using a cascaded data line. This means the controller first sends data to the first LED light, which then intercepts the first set of data and sends the subsequent data to the second light. The second light intercepts the first set of data (corresponding to the second set of data output by the controller) and sends the subsequent data to the third light, and so on. However, if a bad light point appears in the light string, data cannot be sent further, resulting in the second half of the light string not displaying properly.

[0003] To avoid the problem of a bad LED pixel in an LED light string preventing data from being transmitted and causing the second half of the LED light string to not display properly, the existing solution connects the data lines of the LED light points in parallel so that each light point receives the same data. To display different colors, it is necessary to pre-assign a different address to each light point. Each light point then obtains the corresponding display data based on its own address. Even if a bad pixel occurs, it will not affect the display of other light points. However, because the light point data lines are connected in parallel, the address of each light point must be assigned in sequence during assembly. During maintenance, the address of the damaged light point cannot be directly obtained. The only way is to remove the adjacent normal light point, read the address, and then reinstall it.

[0004] Therefore, the existing technology still needs to be improved and developed. Summary of the Invention

[0005] In view of the above-mentioned deficiencies in the prior art, the purpose of the present invention is to provide a method and device for reading the address of the lamp points of an LED light string, so as to solve the problem that the existing control method of the LED light string adopts the method of connecting the lamp point data lines in parallel, and the address of each lamp point must be assigned in sequence during assembly, but the address of the damaged lamp point cannot be directly obtained during maintenance, and the address can only be read out after the adjacent normal lamp point is disassembled and reinstalled.

[0006] The technical solutions of the present invention are as follows:

[0007] A method for reading the address of a light point of an LED light string, comprising:

[0008] The controller sends an address matching instruction to the light point; wherein the address matching instruction includes matching data;

[0009] The controller controls the light point to calculate the light point address and the matching data, and turns on or off the LED according to the calculation result;

[0010] The controller controls the photoreceptor to capture the on / off status information of the light point, and reads the address of the light point according to the on / off status information.

[0011] In a further configuration of the present invention, the controller controls the light point to calculate the light point address and the matching data, and the step of lighting or extinguishing the LED according to the calculation result includes:

[0012] The controller controls the light point to calculate the light point address and the matching data, and lights up the LED if the calculation result meets the preset condition, and turns off the LED if the calculation result does not meet the preset condition.

[0013] In a further configuration of the present invention, the controller controls the light point to calculate the light point address and the matching data, and lights up the LED if the calculation result meets the preset condition, and turns off the LED if the calculation result does not meet the preset condition, including the following steps:

[0014] The controller controls the photoreceptor to aim at the light point whose address needs to be obtained;

[0015] The controller sends an address matching instruction to the light point, so that the light point address of the light point and the matching data are subjected to a bitwise AND operation, and if the operation result is not 0, the light point is turned on, otherwise the light point is turned off;

[0016] The controller obtains the value corresponding to the bit in the lamp point address according to the on / off status of the lamp point, and obtains the lamp point address of the lamp point according to the value corresponding to the bit in the lamp point address.

[0017] In a further configuration of the present invention, the controller controls the light point to calculate the light point address and the matching data, and lights up the LED if the calculation result meets the preset condition, and turns off the LED if the calculation result does not meet the preset condition, including the following steps:

[0018] The controller controls the photoreceptor to aim at the light point whose address needs to be obtained;

[0019] The controller sends an address matching instruction to the light point, so that the light point address of the light point and the matching data are bitwise ORed, and if the result of the operation is 0, the light point is lit, otherwise the light point is extinguished;

[0020] The controller obtains the value corresponding to the bit in the lamp point address according to the on / off status of the lamp point, and obtains the lamp point address of the lamp point according to the value corresponding to the bit in the lamp point address.

[0021] According to a further configuration of the present invention, the step of the controller controlling the photoreceptor to aim at the light point whose address needs to be obtained comprises:

[0022] The controller simultaneously controls the plurality of photoreceptors to aim at the light points whose addresses need to be obtained.

[0023] In a further configuration of the present invention, the controller obtains a value corresponding to a bit in a lamp point address according to the on / off status of the lamp point, and the step of obtaining the lamp point address of the lamp point according to the value corresponding to the bit in the lamp point address includes:

[0024] The controller parses the binary code of the light point address according to the on / off status of the light point, and converts the binary code into a hexadecimal number to obtain the light point address.

[0025] Based on the same inventive concept, the present invention also provides a device for reading the address of a light point of an LED light string, which is applied to the above-mentioned method for reading the address of a light point of an LED light string. The device is connected to an LED light string having a plurality of light points connected in parallel. The device for reading the address of a light point of an LED light string comprises: a controller and at least one photoreceptor; wherein,

[0026] The controller is connected to the LED light string and the photoreceptor respectively, and is used to send an address matching instruction to the light point, control the light point to calculate the light point address and matching data and turn on or off the LED according to the calculation result, and is also used to control the control photoreceptor to capture the on and off status information of the light point and read the light point address according to the on and off status information;

[0027] The photoreceptor is connected to the controller and arranged opposite to the light point, and is used to capture the on / off information of the light point according to the control instruction of the controller and feed it back to the controller.

[0028] According to a further configuration of the present invention, the photoreceptor is a photosensitive device, and the photosensitive device is used to convert the received light signal into an electrical signal and send the electrical signal to the controller.

[0029] According to a further configuration of the present invention, the photosensitive device is a photoresistor, a photodiode or a phototransistor.

[0030] According to a further configuration of the present invention, the speed at which the controller sends the address matching instruction is adjusted according to the response speed of the photoreceptor.

[0031] The present invention provides a method and device for reading the address of a light point of an LED light string. The method for reading the address of a light point of an LED light string includes: a controller sends an address matching instruction to a light point; wherein the address matching instruction includes matching data; the controller controls the light point to calculate the light point address and the matching data, and lights or extinguishes the LED according to the calculation result; the controller controls the photoreceptor to capture the on / off status information of the light point, and reads the light point address according to the on / off status information. The present invention sends an address matching instruction to the light point through the controller, controls the light point to calculate the light point address and the matching data, and lights or extinguishes the LED according to the calculation result, and then controls the photoreceptor to capture the on / off status information of the light point through the controller, and reads the light point address according to the on / off status information. In this way, in the control method of the LED light string using the parallel connection method of the light point data line, the light point address of the light point can be directly obtained. When a light point is damaged, the address of the light point adjacent to the damaged light point can be directly obtained, thereby obtaining the light point address of the damaged light point without the need to disassemble and install the light point. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary personnel in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0033] Figure 1 It is a flow chart of a method for reading the address of a light point of an LED light string in the present invention.

[0034] Figure 2 This is a circuit schematic diagram of a device for reading the address of a light point of an LED light string in the present invention. DETAILED DESCRIPTION

[0035] The present invention provides a method and device for reading the address of each light point in an LED light string, which can be used in the fields of LED lighting, LED display screens, LED backlights, LED lighting, etc. The method and device can read the address of each light point in the LED light string and realize independent control of each light point in the LED light string. To make the objectives, technical solutions, and effects of the present invention clearer and more specific, the present invention is further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.

[0036] In the embodiments and patent claims, unless otherwise specified herein, the words "a," "an," "the," and "the" may include plural forms. If the embodiments of the present invention include descriptions of "first," "second," etc., such descriptions are for descriptive purposes only and should not be understood as indicating or implying their relative importance or implicitly specifying the number of the technical features indicated. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include at least one of such features.

[0037] It should be further understood that the term "comprising" as used in the description of the present invention refers to the presence of the stated features, integers, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or groups thereof. It should be understood that when we refer to an element as being "connected" or "coupled" to another element, it can be directly connected or coupled to the other element, or there can be intermediate elements. In addition, "connected" or "coupled" as used herein can include wireless connections or wireless couplings. The term "and / or" as used herein includes all or any units and all combinations of one or more associated listed items.

[0038] It will be understood by those skilled in the art that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by those skilled in the art in the art to which the present invention belongs. It should also be understood that terms such as those defined in common dictionaries should be understood to have meanings consistent with their meanings in the context of the prior art and will not be interpreted in an idealized or overly formal sense unless specifically defined as herein.

[0039] In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to implement them. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0040] Please also see Figure 1 The present invention provides a preferred embodiment of a method for reading the address of a light point of an LED light string.

[0041] like Figure 1 As shown, the present invention provides a method for reading the address of a light point of an LED light string, which includes the following steps:

[0042] S100, the controller sends an address matching instruction to the light point; wherein the address matching instruction includes matching data;

[0043] S200, the controller controls the light point to calculate the light point address and the matching data, and turns on or off the LED according to the calculation result;

[0044] S300: The controller controls the photoreceptor to capture the on / off status information of the light point, and reads the address of the light point according to the on / off status information.

[0045] Specifically, the LED light string is formed by connecting a plurality of light points in parallel using data lines. The light points include a driving chip and a light-emitting device. In this embodiment, the light-emitting device of the light point is an LED light-emitting diode.

[0046] When reading the address of a light point in an LED light string, the controller first sends an address matching command with matching data to the light point. After receiving the address matching command, the light point calculates its own address (light point address) with the matching data to obtain a calculation result. Based on the calculation result, it chooses to drive the LED to light up or off. The photoreceptor can capture the on or off status information of the light point and feedback the on / off status information to the controller. The controller can then obtain the light point address of the light point based on the on / off status information.

[0047] Because the address of each light point in the LED light string is pre-assigned in the data line parallel connection scheme, when a light point in the LED light string is damaged, the light sensor can capture the on or off status information of the light point, and feedback the on and off status information to the controller to read the light point address of the light point adjacent to the damaged light point, and then the light point address of the damaged light point can be obtained. It can be seen that the present invention can read the address of each light point in the LED light string and realize independent control of each light point in the LED light string. This eliminates the need to disassemble and install the light points, facilitating the maintenance of the LED light string.

[0048] In a further implementation of an embodiment, step S200 includes the steps of:

[0049] S210, the controller controls the light point to calculate the light point address and the matching data, and lights up the LED if the calculation result meets the preset condition, and turns off the LED if the calculation result does not meet the preset condition.

[0050] Furthermore, step S210 includes the following steps:

[0051] S211, the controller controls the photoreceptor to aim at the light point whose address needs to be obtained;

[0052] S212, the controller sends an address matching instruction to the light point, so as to perform a bitwise AND operation on the light point address of the light point and the matching data, and if the operation result is not 0, the light point is turned on, otherwise the light point is turned off;

[0053] S213. The controller obtains a value corresponding to a bit in the lamp point address according to the on / off status of the lamp point, and obtains the lamp point address of the lamp point according to the value corresponding to the bit in the lamp point address.

[0054] Specifically, take the case where the lamp point address is an 8-bit value 0x00-0xff, the matching data includes 0x80, 0x40, 0x20, 0x10, 0x08, 0x04, 0x02, and 0x01, and the LED light string has 256 lamp points. During specific implementation, the controller controls the photoreceptor to align with the lamp point whose lamp point address needs to be obtained, and then sends 8 address matching instructions to the corresponding lamp point. After receiving the instruction matching instruction, the lamp point performs a bitwise AND operation on its own lamp point address and the matching data. If the operation result is not 0, the LED is driven to light up, and if the operation result is 0, the LED is turned off. The controller detects the on and off status of the LED through the photoreceptor and determines and obtains the value corresponding to the 8 bits of the lamp point address of the lamp point, and combines the values corresponding to the 8 bits to obtain the lamp point address of the lamp point.

[0055] In step S213, the controller parses the binary code of the light point address according to the on / off status of the light point, and converts the binary code into a hexadecimal number to obtain the light point address.

[0056] For example, when the light point address of a light point at a certain position is 0x6b, the results of the bitwise AND operation with the matching data (0x80, 0x40, 0x20, 0x10, 0x08, 0x04, 0x02, 0x01) are 0x00, 0x40, 0x20, 0x00, 0x80, 0x00, 0x02, 0x01, and the corresponding LED states are "off, on, on, off, on, off, on, on". After detecting the output of the photosensor, the controller parses the binary code of the light point address as 0b01101011, which is converted to hexadecimal as 0x6b. The data obtained after conversion is the information of the light point address.

[0057] In another embodiment, step S210 includes the steps of:

[0058] S214, the controller controls the photoreceptor to aim at the light point whose address needs to be obtained;

[0059] S215, the controller sends an address matching instruction to the light point, so that the light point address of the light point and the matching data are subjected to a bitwise OR operation, and if the operation result is 0, the light point is turned on, otherwise the light point is turned off;

[0060] S216. The controller obtains a value corresponding to a bit in the lamp point address according to the on / off status of the lamp point, and obtains the lamp point address of the lamp point according to the value corresponding to the bit in the lamp point address.

[0061] Assume that the light-emitting device of the lamp point is an LED light-emitting diode, the LED light string has 1024 lamp points, the lamp point address is a 10-bit value 0x000-0x3ff, the matching data bit is 10 bits long and only one bit is 0, including 0x3fe, 0x3fd, 0x3fb, 0x3f7, 0x3ef, 0x3df, 0x3bf, 0x37f, 0x2ff, and 0x1ff as an example.

[0062] In a specific implementation, the controller controls the photoreceptor to align with the light point whose address is to be obtained, and then sends 10 address matching instructions to the corresponding light point. After receiving the instruction matching instruction, the light point performs a bitwise OR operation on its own light point address and the matching data. If the operation result is not 0x3ff, the LED is driven to light up; if the operation result is 0x3ff, the LED is turned off. The controller detects the on and off status of the LED through the photoreceptor and determines and obtains the values corresponding to the 10 bits of the light point address of the light point. The corresponding values of the 10 bits are combined to obtain the light point address of the light point.

[0063] Similarly, the controller parses the binary code of the light point address according to the on / off status of the light point, and converts the binary code into a hexadecimal number to obtain the light point address.

[0064] For example, when the light point address of a light point at a certain position is 0x105, the results of the bitwise OR operation with the matching data (0x3fe, 0x3fd, 0x3fb, 0x3f7, 0x3ef, 0x3df, 0x3bf, 0x37f, 0x2ff, 0x1ff) are 0x3ff, 0x3fd, 0x3ff, 0x3f7, 0x3ef, 0x3df, 0x3bf, 0x37f, 0x3ff, 0x1ff), and the corresponding LED states are "off, on, off, on, on, on, on, on, off, on". After detecting the output of the photosensor, the controller parses the binary code of the light point address as "1, 0, 1, 0, 0, 0, 0, 0, 1, 0" from low to high, which is converted to hexadecimal 0x105. The data obtained after conversion is the light point address information.

[0065] In some embodiments, step S211 includes:

[0066] S2111. The controller simultaneously controls multiple photoreceptors to aim at the light point whose address needs to be obtained.

[0067] Specifically, the controller can simultaneously control multiple photoreceptors to aim at the light points whose addresses need to be obtained, so that the light point addresses of the multiple light points can be read in parallel using multiple photoreceptors.

[0068] See also Figure 2 In some embodiments, the present invention further provides a device for reading the address of a light point of an LED light string applied to the above-mentioned method for reading the address of a light point of an LED light string, which is connected to an LED light string in which several light points are connected in parallel. The device for reading the address of a light point of an LED light string comprises: a controller 100 and at least one photoreceptor; wherein the controller 100 is respectively connected to the LED light string and the photoreceptor, and is used to send an address matching instruction to the light point, control the light point to calculate the light point address and the matching data and light up or turn off the LED according to the calculation result, and is also used to control the control photoreceptor to capture the on and off status information of the light point, and read the light point address according to the on and off status information; the photoreceptor is connected to the controller and arranged opposite to the light point, and is used to capture the on and off information of the light point according to the control instruction of the controller and feed it back to the controller.

[0069] Specifically, the photoreceptor is a photosensitive device that converts the received light signal into an electrical signal and sends it to the controller 100. The photoreceptor can collect the on / off status information of the light point and feed it back to the controller. The controller obtains the light point address of the light point according to the on / off status information interface of the light point. In some embodiments, the LED light string has 256 light points, such as Figure 2 As shown, the LED light string includes light points L1, L2, L3...LN, where N is 256.

[0070] When a lamp in an LED light string is damaged, the light sensor can capture the on or off status information of the lamp, and feed back the on and off status information to the controller to read the lamp address of the lamp adjacent to the damaged lamp, and then obtain the lamp address of the damaged lamp. This eliminates the need to disassemble and install the lamp, facilitating the maintenance of the LED light string.

[0071] In some embodiments, the photosensitive device is a photoresistor, a photodiode, or a phototransistor, for example, a photodiode.

[0072] Furthermore, each of the photoreceptors is corresponding to one of the light points.

[0073] Specifically, taking the example of a lamp point address of 8 bits, if there is only one photoreceptor, the controller needs to send 8 address matching instructions to read the complete address of a lamp point. If there are multiple photoreceptors in parallel, the controller can send 8 address matching instructions to read the lamp point addresses of multiple lamp points. In one implementation, when the number of photoreceptors is 8, the controller can send 8 matching instructions to read the lamp point addresses of 8 lamp points, such as Figure 2 As shown, the photoreceptors are denoted as K1, K2, K3...Kn, where n is 8.

[0074] In some embodiments, the speed at which the controller sends the address matching instruction is adjusted according to the response speed of the photoreceptor.

[0075] Specifically, the photoreceptor is connected to the controller. When the photoreceptor senses the lighting status of the LED at the light point, its response speed is controlled by the controller. If the response speed of the photoreceptor is slow, the controller can slow down the speed of sending the address matching instruction so that the response speed of the photoreceptor can capture the lighting status of the LED.

[0076] It should be noted that when the speed of the LED lighting state of the lamp point does not change, there are higher requirements for the response speed of the sensor. Similarly, there are also higher requirements for the processing power of the controller.

[0077] In summary, the present invention provides a method and device for reading the address of a lamp point of an LED light string. The method for reading the address of a lamp point of an LED light string includes: a controller sends an address matching instruction to a lamp point; wherein the address matching instruction includes matching data; the controller controls the lamp point to calculate the lamp point address and the matching data, and lights up or turns off the LED according to the calculation result; the controller controls the photoreceptor to capture the on and off status information of the lamp point, and reads the lamp point address according to the on and off status information. The present invention sends an address matching instruction to the lamp point through the controller, controls the lamp point to calculate the lamp point address and the matching data, and lights up or turns off the LED according to the calculation result, and then controls the photoreceptor to capture the on and off status information of the lamp point through the controller, and reads the lamp point address according to the on and off status information. In this way, in the control method of the LED light string using the lamp point data line parallel connection method, the lamp point address of the lamp point can be directly obtained. When a lamp point is damaged, the address of the lamp point adjacent to the damaged lamp point can be directly obtained, thereby obtaining the lamp point address of the damaged lamp point without the need to disassemble and install the lamp point.

[0078] It should be understood that the application of the present invention is not limited to the above examples. For those skilled in the art, improvements or changes can be made based on the above description. All these improvements and changes should fall within the scope of protection of the claims attached to the present invention.

Claims

1. A method for reading the address of a light point of an LED light string, characterized in that: include: The controller sends an address matching instruction to the light point; wherein the address matching instruction includes N N-bit matching data; each light point is pre-assigned an N-bit light point address; The controller controls the light point to sequentially calculate the light point address and the matching data, and turns on or off the LED according to the result of each calculation; the controller controls the photoreceptor to capture the on / off status information of the light point and convert it into a 0 / 1 signal, and sequentially combines the 0 / 1 signals to obtain the light point address; wherein, the controller simultaneously controls multiple photoreceptors to aim at the light point for which the light point address needs to be obtained; The controller controls the light point to calculate the light point address and the matching data, and lights up or turns off the LED according to the calculation result, including: The controller controls the light point to perform a bitwise logic operation on the light point address and the matching data, and lights up the LED if the operation result meets the preset condition, and turns off the LED if the operation result does not meet the preset condition.

2. The method for reading the address of a light point of an LED light string according to claim 1, wherein: The controller controls the light point to calculate the light point address and the matching data, and lights up the LED if the calculation result meets the preset condition, and turns off the LED if the calculation result does not meet the preset condition. The steps include: The controller controls the photoreceptor to aim at the light point whose address needs to be obtained; The controller sends an address matching instruction to the light point, so that the light point address of the light point and the matching data are subjected to a bitwise AND operation, and if the operation result is not 0, the light point is turned on, otherwise the light point is turned off; The controller obtains the value corresponding to the bit in the lamp point address according to the on / off status of the lamp point, and obtains the lamp point address of the lamp point according to the value corresponding to the bit in the lamp point address.

3. The method for reading the address of a light point of an LED light string according to claim 1, wherein: The controller controls the light point to calculate the light point address and the matching data, and lights up the LED if the calculation result meets the preset condition, and turns off the LED if the calculation result does not meet the preset condition. The steps include: The controller controls the photoreceptor to aim at the light point whose address needs to be obtained; The controller sends an address matching instruction to the light point, so that the light point address of the light point and the matching data are bitwise ORed, and if the result of the operation is 0, the light point is lit, otherwise the light point is extinguished; The controller obtains the value corresponding to the bit in the lamp point address according to the on / off status of the lamp point, and obtains the lamp point address of the lamp point according to the value corresponding to the bit in the lamp point address.

4. The method for reading the address of a light point of an LED light string according to claim 2 or 3, wherein: The controller obtains a value corresponding to a bit in a lamp point address according to the on / off status of the lamp point, and obtains the lamp point address of the lamp point according to the value corresponding to the bit in the lamp point address, including: The controller parses the binary code of the light point address according to the on / off status of the light point, and converts the binary code into a hexadecimal number to obtain the light point address.

5. A device for reading the address of a light point of an LED light string, applied to the method for reading the address of a light point of an LED light string according to any one of claims 1 to 4, connected to an LED light string having a plurality of light points connected in parallel, characterized in that: include: A controller and at least one photoreceptor; wherein, The controller is connected to the LED light string and the photoreceptor respectively, and is used to send an address matching instruction to the light point, control the light point to calculate the light point address and matching data and turn on or off the LED according to the calculation result, and is also used to control the control photoreceptor to capture the on and off status information of the light point and read the light point address according to the on and off status information; The photoreceptor is connected to the controller and arranged opposite to the light point, and is used to capture the on / off information of the light point according to the control instruction of the controller and feed it back to the controller.

6. The device for reading the address of a light point of an LED light string according to claim 5, characterized in that: The photoreceptor is a photosensitive device, which is used to convert the received light signal into an electrical signal and send the electrical signal to the controller.

7. The device for reading the address of a light point of an LED light string according to claim 6, wherein: The photosensitive device is a photoresistor, a photodiode or a phototransistor.

8. The device for reading the address of a light point of an LED light string according to claim 5, wherein: The speed at which the controller sends the address matching instruction is adjusted according to the response speed of the photoreceptor.

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