CN115665924A - Lamp point address distribution method and device for LED lamp string - Google Patents

Abstract

The invention discloses a method and a device for distributing lamp point addresses of LED lamp strings, wherein the method comprises the following steps: the controller obtains initial addresses of all lamp points in the LED lamp string; the initial addresses of the lamp points comprise a first initial address and a second initial address; the controller judges whether the first initial address and the second initial address of each lamp point are repeated or not, and rewrites the lamp point address according to the repetition condition of the first initial address and the second initial address of the lamp point to obtain a new lamp point address. The invention sets two initial addresses for the lamp points, reduces the situation of repeated initial addresses in the same LED lamp string, and when the lamp points are allocated with addresses, if the two initial addresses of each lamp point in the LED lamp string are different or only one initial address is the same, the controller only needs to allocate a new address to the lamp points through one initial address.

Description

Method and device for allocating light point addresses of LED light strings

technical field

The present invention relates to the technical field of LED light strings, in particular to a method and device for assigning address points of LED light strings.

Background technique

The light point has an initial address. After processing and producing the LED light string, it is necessary to use the initial address of the light point and the position of the light point in the LED light string to generate a new light point address. In subsequent normal use, the controller can use the new address. The address of the light point performs data interaction with the light point in the LED light string. Because the bit width of the initial address of the light point is limited, it is easy to have two or more initial addresses of the light point in the same LED light string overlap during large-scale production, causing the controller to access the LED light string according to the initial address. When assigning new addresses to different light points in the network, one initial address corresponds to multiple light points, resulting in incorrect allocation of new addresses.

In order to solve the above problems, the method of increasing the bit width of the initial address of the light point is usually used. However, while the bit width of the initial address of the light point is increased, the bit width of the new address of the light point is also increased, so that the access between the controller and the light point The length of the instruction increases, resulting in less efficient data transfer. Another way is to connect all the light points in the LED light string in series through the address line by adding a serial address assignment line, and then coordinate with the address assignment instruction to assign the address of the light points sequentially, but this method requires a separate address line, Additional wiring overhead is added, resulting in higher costs.

Therefore, the prior art still needs to be improved and developed.

Contents of the invention

In view of the above deficiencies in the prior art, the object of the present invention is to provide a method and device for assigning address of LED light strings to solve the problem of low data transmission efficiency or cost higher question.

Technical scheme of the present invention is as follows:

A method for assigning address points of LED light strings, comprising:

The controller obtains the initial address of each light point in the LED light string; wherein, the initial address of the light point includes a first initial address and a second initial address;

The controller judges whether the first initial address and the second initial address of each light point are repeated, and rewrites the light point address according to the duplication of the first initial address and the second initial address of the light point to obtain a new light point address;

Among them, if the first initial address and the second initial address of each light point in the LED light string are different, the controller rewrites the address of the light point according to the first initial address or the second initial address of the light point; The first initial address of the light point is different but the second initial address is the same, the controller rewrites the light point address according to the first initial address, or the first initial address is the same but the second initial address is different, the controller rewrites the light point address according to the second initial address Address; if the first initial address and the second initial address of some light points in the LED light string are the same, and the light points with the same first initial address and the second initial address are different light points, the controller according to the first initial address Rewrite the lamp point address with the second initial address.

In a further setting of the present invention, the controller judges whether the first initial address and the second initial address of each light point are duplicated, and rewrites the light point address according to the duplication of the first initial address and the second initial address of the light point to obtain The steps for a new light point address include:

The controller rewrites the address of the light point according to the first initial address, the second initial address, or the first initial address and the second initial address of the light point in combination with the position number of the light point in the LED light string.

In a further setting of the present invention, the controller rewrites the address of the light point according to the first initial address, the second initial address, or the first initial address and the second initial address of the light point in combination with the position number of the light point in the LED light string Steps include:

The controller sends the initial address of each light point and the position number of the corresponding light point in the LED light string to the LED light string. If the initial address received by each light point in the LED light string is equal to its own initial address, the corresponding light The initial address of the point itself is changed to the position number to obtain the new address of the corresponding light point.

In a further setting of the present invention, the controller judges whether the first initial address and the second initial address of each light point are duplicated, and rewrites the light point address according to the duplication of the first initial address and the second initial address of the light point to obtain The steps for the new light point address also include:

If the first initial address and the second initial address of some light points in the LED light string are the same, and the light points with the same first initial address and the second initial address are the same light point, one of the light point pairs will be repeated Replace and then reassign addresses.

In a further setting of the present invention, the step of the controller obtaining the initial address of each light point in the LED light string includes:

The controller sends an address reading command to each light point in the LED light string; among them, after receiving the address reading command, the light point will control the on-off state of the light-emitting component according to the address reading command;

The controller controls the photoreceptor to read the on-off state of the light point and obtains the on-off state information fed back by the photoreceptor;

The controller obtains the initial addresses of the light points according to the on-off status information, and reads the initial addresses of all the light points according to the order in which the light points are arranged in the LED light string.

In a further setting of the present invention, after the address is rewritten, the light point will record that its initial address has been rewritten, and the light point whose address has been rewritten will not rewrite its own new light point address.

In a further setting of the present invention, before the step of the controller obtaining the initial address of each light point in the LED light string, the step further includes:

Pre-set the first initial address and the second initial address at the light point;

Wherein, when rewriting the address of the lamp point, the first initial address remains unchanged, and the second initial address is modified to obtain a new address of the lamp point.

In a further setting of the present invention, the controller judges whether the first initial address and the second initial address of each light point are duplicated, and rewrites the light point address according to the duplication of the first initial address and the second initial address of the light point to obtain After the steps of the new light point address also include:

The controller performs display data interaction with the corresponding light point through the address of the new light point, so as to control the corresponding light point to display different grayscale images according to the display data.

A light point address allocation device for LED light strings, which is applied to the light point address allocation method of LED light strings, is connected with LED light strings, and includes: a controller and a photoreceptor; wherein,

The photoreceptor is connected to the controller and arranged opposite to the light point in the LED light string, the photoreceptor is used to read the on-off state of the light point and feed back the on-off state information to the controller;

The controller is respectively connected to the photoreceptor and the LED light string, and the controller is used to obtain the initial address of each light point in the LED light string according to the on-off state information, and determine the first address of each light point. Whether the initial address and the second initial address are repeated, according to the duplication of the first initial address and the second initial address of the light point, rewrite the light point address to obtain a new light point address.

In a further aspect of the present invention, the photoreceptor is a photosensitive device.

The present invention provides a method and device for assigning addresses of LED light points, the method includes: the controller obtains the initial address of each light point in the LED light string; wherein, the initial address of the light point includes the first initial address and the second initial address Two initial addresses: the controller judges whether the first initial address and the second initial address of each light point are repeated, and rewrites the light point address according to the repetition of the first initial address and the second initial address of the light point to obtain a new light point address ; Wherein, if the first initial address and the second initial address of each light point in the LED light string are different, the controller rewrites the light point address according to the first initial address or the second initial address of the light point; if the LED light string If the first initial address of some light points is different but the second initial address is the same, the controller rewrites the address of the light point according to the first initial address, or if the first initial address is the same but the second initial address is different, the controller rewrites the address according to the second initial address Light point address; if the first initial address and the second initial address of some light points in the LED light string are the same, and the light points with the same first initial address and second initial address are different light points, the controller according to the first The initial address and the second initial address rewrite the lamp address. The present invention reduces the repetition of initial addresses in the same LED light string by setting two initial addresses for the light points. When assigning addresses to light points, if the two initial addresses of each light point in the LED light string are different or only The initial address is the same, and the controller only needs to assign a new address to the light point through one initial address. Compared with accessing through two initial addresses, the data transmission efficiency is improved, and there is no need for address assignment lines, which saves wiring space and reduces costs.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present invention. For those skilled in the art, other drawings can also be obtained according to the structures shown in these drawings without creative effort.

FIG. 1 is a schematic flow chart of a method for assigning address points of LED light strings in the present invention.

Fig. 2 is a schematic flowchart of a method for assigning address points of LED light strings in a specific application embodiment of the present invention.

Fig. 3 is a schematic circuit diagram of the light point address distribution device of the LED light string in the present invention.

Detailed ways

The invention provides a method and device for allocating addresses of LED lamp strings, which are applied in the fields of LED lighting, LED screen display, LED backlight, LED lighting and the like. In order to make the object, technical solution and effect of the present invention more clear and definite, the present invention will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

In the embodiments and claims, unless the article is specifically limited, "a", "an", "the" and "the" may also include plural forms. If there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. Significance or implicitly indicates the number of technical features indicated. Thus, the features defined as "first" and "second" may explicitly or implicitly include at least one of these features.

It should be further understood that the word "comprising" used in the description of the present invention refers to the presence of said 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 will be understood that when an element is referred to as being "connected" or "coupled" to another element, it can be directly connected or coupled to the other element or intervening elements may also be present. Additionally, "connected" or "coupled" as used herein may include wireless connection or wireless coupling. The expression "and/or" used herein includes all or any elements and all combinations of one or more associated listed items.

Those skilled in the art can understand that, unless otherwise defined, all terms (including technical terms and scientific terms) used herein have the same meaning as commonly understood by those of ordinary skill in the art to which this invention belongs. It should also be understood that terms, such as those defined in commonly used dictionaries, should be understood to have meanings consistent with their meaning in the context of the prior art, and unless specifically defined as herein, are not intended to be idealized or overly Formal meaning to explain.

In addition, the technical solutions of the various embodiments can be combined with each other, but it must be based on the realization of those skilled in the art. When the combination of technical solutions is contradictory or cannot be realized, it should be considered that the combination of technical solutions does not exist , nor within the scope of protection required by the present invention.

The inventor found that, in order to avoid the situation that one initial address corresponds to multiple light points when the controller accesses different light points in the LED light string according to the initial address to assign new addresses to the light points, the new address cannot be correctly assigned The problem is that the method of increasing the bit width of the initial address of the light point is usually used, but this also increases the bit width of the new address, which eventually leads to an increase in the length of the access instruction between the controller and the light point, and lower data transmission efficiency. The system of this type of technology uses a single-line data line to transmit display data, and the transmission rate itself is low, and any additional data will reduce the image refresh rate. Another way is not to use the initial address to assign a new address, but to add a serial address assignment line to connect all the light points in the LED light string in series through the address line, and then cooperate with the address assignment command of the control to Sequentially assigning the address of the light points, this method requires a separate address line, which increases additional wiring overhead and increases the cost, and in the application of a transparent screen, the added address line will affect the transparency effect.

Aiming at the above-mentioned technical problems, the method and device for assigning addresses of LED light strings provided by the present invention set two initial addresses for the light points, thus reducing the repetition of initial addresses in the same LED light string. When addressing, if the two initial addresses of each light point in the LED light string are different or only one initial address is the same, the controller only needs to assign a new address to the light point through one initial address. Compared with the way of accessing through two initial addresses, it improves the data transmission efficiency and saves the test time, and the bit width of the new light point address of the light point is equal to the bit width of any one of the initial addresses, and the controller is used with the light point When the new light point address is used to interactively display data, the data transmission efficiency is high, and the refresh rate of the image is improved. In addition, the present invention does not need address distribution lines, saves wiring space, reduces system cost, and avoids the problem of affecting the transparent effect due to the addition of address lines in the application of transparent screens.

Please refer to FIG. 1 and FIG. 2 at the same time. The present invention provides a preferred embodiment of a method for assigning addresses of LED light strings.

As shown in Figure 1, a method for allocating lamp point addresses of LED light strings provided by the present invention includes steps:

S100. The controller obtains the initial address of each light point in the LED light string; wherein, the initial address of the light point includes a first initial address and a second initial address;

S200. The controller judges whether the first initial address and the second initial address of each light point are duplicated, and rewrites the light point address according to the duplication of the first initial address and the second initial address of the light point to obtain a new light point address;

Among them, if the first initial address and the second initial address of each light point in the LED light string are different, the controller rewrites the address of the light point according to the first initial address or the second initial address of the light point; The first initial address of the light point is different but the second initial address is the same, the controller rewrites the light point address according to the first initial address, or the first initial address is the same but the second initial address is different, the controller rewrites the light point address according to the second initial address Address; if the first initial address and the second initial address of some light points in the LED light string are the same, and the light points with the same first initial address and the second initial address are different light points, the controller according to the first initial address Rewrite the lamp point address with the second initial address.

Specifically, the initial address of each light point includes a first initial address and a second initial address, and the controller can send different instructions through the first initial address or the second initial address to address the corresponding light point, or At the same time, the corresponding light point is addressed through the combination of the first initial address and the second initial address (that is, the combination of the first initial address and the second initial address).

After the controller obtains the initial addresses of all the light points in the LED light string, it judges whether the first initial address and the second initial address of each light point are repeated, and judges whether the first initial address is repeated, the second initial address is repeated, or Both the first initial address and the second initial address are repeated. First, the controller judges whether the first initial address and the second initial address of each light point are different. If the first initial address and the second initial address of each light point in the LED light string are different, then the controller can according to The first initial address rewrites the address of the light point, or rewrites the address of the light point through the second initial address; if the first initial address of some light points is the same as the second initial address, it is further judged whether the first initial address is the same or the second initial address The two initial addresses are the same. If the first initial address of some light points in the LED light string is different but the second initial address is the same, the controller rewrites the address of the light point according to the first initial address, or the first initial address is the same and the second initial address is the same. Different, the controller rewrites the light point address according to the second initial address; if the controller judges that the first initial address and the second initial address of some light points in the LED light string are the same, and the first initial address and the second initial address are the same The lamp points are different lamp points, and the controller rewrites the address of the lamp point according to the first initial address and the second initial address.

It can be seen that the present invention sets two initial addresses for the light point, and the light point has two initial addresses, which is equivalent to the lengthening of the address bit width, which reduces the repetition of initial addresses in the same LED light string. When assigning addresses to the light point, if The two initial addresses of each light point in the LED light string are different or only one initial address is the same. The controller only needs to assign a new address to the light point through one initial address, and the bit width of the new light point address is equal to any of the initial addresses. Compared with the way of accessing through two initial addresses, when the controller uses the new address of the light point to interactively display data, the data transmission efficiency is improved, thereby improving the refresh rate of the image, and no address is required. The distribution line saves the wiring space, reduces the cost, and avoids the problem of affecting the transparency effect due to the addition of address lines in the application of the transparent screen.

For example, an LED light string has 20 light points, each light point includes three colors of R (red), G (green) and B (blue), each color corresponds to 8-bit display data, and the initial address of the light point is B-bit wide 8 bits, the probability of two duplicate addresses appearing in the initial address B is 20/256, about 8%. If the address bit width of 8 bits is increased, the probability of two duplicate addresses appearing is 20/65536, about 3/10,000. A total of 24 bits of RGB display data plus an 8-bit address is 32 bits, and after adding an 8-bit address, it becomes 40 bits. That is to say, the controller needs to send at least 40 bits of data to control a single light point. Compared with the 8-bit address, the instruction efficiency of the 16-bit address is reduced by 25%, and the length of the instruction is correspondingly increased by 8 bits.

If the present invention is used, on the premise of 8-bit initial address B, add 8-bit initial address A, the probability that both initial address B and initial address A are the same is only 20/65536, and the controller uses a new lamp when accessing the lamp point In the case of a dot address, the instruction length is not increased, and it is still an 8-bit address.

In a further implementation of an embodiment, step S200 also includes the steps of:

S210. If the first initial address and the second initial address of some light points in the LED light string are the same, and the light points with the same first initial address and the second initial address are the same light point, repeat the pairing of light points. One of them is replaced and then the address is reassigned.

Specifically, if the controller detects that there is a light point in the LED light string that has the same first initial address and the second initial address, and appears in the same pair of light points, that is, two lights with the same first initial address If the two light points with the same second initial address are the same pair of light points, then the address of the light point is repeated and one of the light point pairs is replaced with another new light point, and then the address of the light point in the LED light string is further judged , and rewrite the address of the light point according to the repetition of the first initial address and the second initial address of the light point to obtain a new light point address.

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

S220. The controller rewrites the address of the light point according to the first initial address, the second initial address, or the first initial address and the second initial address of the light point in combination with the position number of the light point in the LED light string.

Specifically, the control reads the initial addresses of all the light points sequentially according to the regular arrangement of the light points in the LED light string.

If the controller judges that the first initial address and the second initial address of each light point in the LED light string are not repeated, then according to the position of each light point in the LED light string, through the first initial address or the second initial address One of them accesses the light point and rewrites its second initial address to obtain a new light point address. For example, if the second initial address of the light point arranged at the head of the LED light string in the LED light string is changed to 0x00, the second The second initial address of the light point is changed to 0x01, and so on;

If the second initial address of the light point in the controller LED light string is repeated, but the first initial address is not repeated, then according to the position of the light point in the LED light string, access the light point through the first initial address access and rewrite it The second initial address, for example, if the second initial address of the light point arranged at the head of the team in the LED light string is changed to 0x00, the second initial address of the light point arranged in the second place is changed to 0x01, and so on;

If the controller judges that the first initial address of the light point in the LED light string is repeated, and the second initial address is not repeated, then according to the position of the light point in the LED light string, access the light point through the second initial address and rewrite it The second initial address, for example, if the second initial address of the light point arranged at the head of the team in the LED light string is changed to 0x00, the initial address of the second light point arranged in the second place is changed to 0x01, and so on;

If the first initial address and the second initial address of the light points in the LED light string are repeated, but they do not appear in the same pair of light points, that is to say, two light points with the same first initial address and the second initial address If there is no intersection between the same two light points, then according to the position of the light point in the LED light string, use the first initial address and the second initial address to access the light point and rewrite its second initial address, for example, if the LED light The second initial address of the light point arranged at the head of the queue in the string is changed to 0x00, the second initial address of the light point arranged in the second place is changed to 0x01, and so on;

If the controller judges that the first initial address and the second initial address of the light point in the LED light string are repeated and appear in the same pair of light points, that is to say, two light points with the same first initial address and the second Two light points with the same initial address are the same pair of light points, replace one of the light point pairs with duplicate addresses with a new light point, and repeat the above process.

In a further implementation of an embodiment, step S220 includes the steps of:

S221. The controller sends the initial address of each light point and the position number of the corresponding light point in the LED light string to the LED light string. If the initial address received by each light point in the LED light string is equal to its own initial address, the The initial address of the corresponding light point itself is changed to the position number to obtain the new light point address of the corresponding light point.

Specifically, if the corresponding relationship between the address of the new light point and the position of the light point in the LED light string is its position number in the LED light string, the controller sends the initial address of the light point and the position of the light point in the LED light string Numbered to the LED light string, the light point in the LED light string compares the received initial address with its own initial address, and if they are equal, rewrites its second initial address as the position number, and the position number is the new light of the light point point address, at this time, the bit width of the new light point address is equal to the bit width of the second initial address.

It should be noted that the address of the new light point must correspond to its position in the LED light string one by one, but it may not be repeated. The new addresses are repeated. For example, if there are 20 light points in a light string, and the same content is displayed between every 5 light points, then the 1-20 light points only need to be addressed according to 0x00-0x04, and repeat 4 groups. When sending a command, it only needs to send 5 data to realize the circular display of 20 light points, and the command length is saved by 75%.

It should be further noted that the second initial address and the first initial address of the light point are interchangeable, that is, the first initial address can be used as the second initial address, and the second initial address can also be used as the first initial address. address. In one implementation manner, the present invention uses rewriting the second initial address as a new light point address, and in another implementation manner, may also rewrite the first initial address as a new light point address.

In a further implementation of an embodiment, step S100 includes the steps of:

S110. The controller sends an address reading instruction to each light point in the LED light string; wherein, after receiving the address reading instruction, the light point controls the on-off state of the light-emitting component according to the address reading instruction;

S120. The controller controls the photoreceptor to read the on-off state of the light point and obtains the on-off state information fed back by the photoreceptor;

S130. The controller obtains the initial addresses of the light points according to the on-off state information, and reads the initial addresses of all the light points according to the order in which the light points are arranged in the LED light string.

Specifically, the controller sends an address reading command to each light point in the LED light string, and the light point outputs its own initial address by turning on and off the light-emitting part (LED) of the controller. The controller controls the photoreceptor to align with the light-emitting parts of the light point, captures the on-off state information of the light point, and feeds it back to the controller to realize the conversion from optical signal to electrical signal, and the controller analyzes the on-off state fed back by the photoreceptor Information, read the first initial address and the second initial address of the corresponding light point according to the arrangement order of the light point in the LED light string.

In a further implementation of an embodiment, before step S100, it also includes:

S101, pre-setting the first initial address and the second initial address at the lamp point;

Wherein, when rewriting the address of the lamp point, the first initial address remains unchanged, and the second initial address is modified to obtain a new address of the lamp point.

Specifically, each light point has two initial addresses, among which, the first initial address is preset before the light point is processed into an LED light string, and does not need to be modified in subsequent production, processing or application, and the second initial address It will also be preset before the light points are processed into LED light strings. After processing into LED light strings, the second initial address needs to be re-modified according to the arrangement position of the light points in the LED light string to obtain the new light point addresses of the light points, or In the application process, when a broken lamp point is replaced, the second initial address of the lamp point is modified according to the position of the lamp point in the LED light string to obtain a new lamp point address of the lamp point.

In a further implementation of an embodiment, after the address is rewritten, the light point will record that its initial address has been rewritten, and the light point whose address has been rewritten will not rewrite its own new light point address.

Specifically, after rewriting the second initial address, the place where the light point originally stored the second initial address is replaced by the new light point address, and the new light point address may be the same as other second initial addresses that have not been rewritten, so the light point needs to Record that the second initial address of itself has been modified to the address of the new light point. If the address rewriting command sent by the controller continues to be received later, the light point whose address has been rewritten will not rewrite its new address.

In a further implementation of an embodiment, after step S200, further steps are included:

S300. The controller performs display data interaction with the corresponding light point through the new light point address, so as to control the corresponding light point to display different grayscale images according to the display data.

Specifically, after the controller completes the address redistribution of LED light strings, that is, after the controller modifies the second initial addresses of all light points to obtain new light point addresses, the addresses of all new light points must be the same as those of the light points in the LED light string. The positions of the LEDs are in one-to-one correspondence, and the corresponding lamp points can be accessed through addressing the new lamp point address, and the control lamp points display different grayscale images according to the display data, so that the color output of the LED light string can be controlled.

For a better understanding of the present invention, please refer to FIG. 2 , and the present invention will be described below with a specific application embodiment.

As shown in Figure 2, when the controller reassigns the address of the LED light string, the controller first sends an address read command to each light point in the LED light string, and at this time the light point controls the light-emitting components (the light point includes the driver chip and Light-emitting component, the light-emitting component can be the on and off status of LED) to output its first initial address and second initial address, the controller reads the on and off status of the light point through the photoreceptor, and demodulates the first initial address with the second initial address. Then the controller judges whether the first initial address and the second initial address of all lamp points are different, and if so, the controller writes the new lamp address to the corresponding otherwise, it is further judged whether the first initial address of all the lamp points is different and the second initial address of some lamp points is the same, if so, the controller writes the new address of the lamp point to the corresponding lamp point through the first initial address, otherwise further Determine whether the second initial addresses of all light points are different and the first initial addresses of some light points are the same, if so, the controller writes the new light point address to the corresponding light point through the second initial address, and further judges whether some light points The first initial address and the second initial address of the point are both the same and the light points overlap. If the controller writes the new light point address into the corresponding light point through the first initial address and the second initial address, otherwise it needs to use Replace one of the overlapping light points with a new light point, and then perform address reassignment, that is, the controller sends an address read command to each light point in the LED light string to perform the above judgment process. After the controller finishes updating the addresses of all the light points of the LED light string, the controller can communicate display data with the light points through the new addresses of the light points, and control the light points to display different grayscale images.

Please refer to Fig. 3, in some embodiments, the present invention also provides a light point address allocation device for LED light strings applied to the light point address allocation method of LED light strings, connected with LED light strings, which includes: control sensor 100 and a photoreceptor; wherein, the photoreceptor is connected to the controller 100 and set opposite to the light point in the LED light string, and the photoreceptor is used to read the on-off state of the light point and feedback the on-off state State information to the controller; the controller 100 is respectively connected to the photoreceptor and the LED light string, and the controller 100 is used to obtain the status of each light point in the LED light string according to the on-off state information The initial address, and judge whether the first initial address and the second initial address of each light point are duplicated, and rewrite the light point address according to the duplication of the first initial address and the second initial address of the light point to obtain a new light point address.

Specifically, the controller 100 sends an address reading command to each light point in the LED light string, and the light point outputs its own initial address by turning on and off the light-emitting part (LED) of the controller. The controller 100 controls the photoreceptor to align with the light-emitting parts of the light point, captures the on-off status information of the light point, and feeds it back to the controller to realize the conversion from optical signal to electrical signal. The state information reads the first initial address and the second initial address of the corresponding light point according to the arrangement order of the light point in the LED light string.

After the controller obtains the initial addresses of all the light points in the LED light string, it judges whether the first initial address and the second initial address of each light point are repeated, and judges whether the first initial address is repeated, the second initial address is repeated, or Both the first address and the second address are repeated. First, the controller 100 judges whether the first initial address and the second initial address of each light point are different, if the first initial address and the second initial address of each light point in the LED light string are different, then the controller can Rewrite the address of the lamp point according to the first initial address, or rewrite the address of the lamp point through the second initial address; if the first initial address of some lamp points is the same as the second initial address, then further judge whether the first initial address The second initial address is the same. If the first initial address of some light points in the LED light string is different but the second initial address is the same, the controller 100 rewrites the address of the light point according to the first initial address, or the first initial address is the same and the second initial address is the same. If the initial address is different, the controller 100 rewrites the address of the light point according to the second initial address; if the controller judges that the first initial address and the second initial address of some light points in the LED light string are the same, and the first initial address and the second initial address Light points with the same address are different light points, and the controller 100 rewrites the address of the light point according to the first initial address and the second initial address.

It can be seen that the present invention reduces the duplication of initial addresses in the same LED light string by setting two initial addresses for the light points. When assigning addresses to light points, if the two initial addresses of each light point in the LED light string are different or Only one initial address is the same, the controller only needs to assign a new address to the light point through one initial address, and the bit width of the new light point address is equal to the bit width of any of the initial addresses, compared to accessing through two initial addresses In this way, when the controller uses the new address of the light point to interactively display data with the light point, the efficiency of data transmission is improved, and no address allocation line is needed, which saves wiring space and reduces costs.

In a further implementation of one embodiment, the photoreceptor is a photosensitive device.

Specifically, the photosensitive device is used to convert the received light signal into an electrical signal and send it to the controller. In some embodiments, the photosensitive device may be, but not limited to, a photoresistor, a photodiode or a phototransistor, for example, a photodiode.

Please refer to FIG. 3 , in some embodiments, there are multiple photoreceptors, and each photoreceptor is correspondingly arranged opposite to one of the light spots.

Specifically, the LED light string has 256 light points. As shown in FIG. 3 , the light points of the LED light string include L1 , L2 , L3 . . . LN, where N is 256.

Because the address of a light point is 8 bits, if there is only one photoreceptor, the controller 100 needs to send an address matching command 8 times to read the complete address of a light point. If there are multiple photoreceptors in parallel, the controller 100 can read the address of the light point corresponding to multiple light points by sending the address matching command 8 times. In one implementation, the number of photoreceptors is set to 8. When the number of photoreceptors is 8, the controller 100 can read the address of 8 light points by sending 8 matching instructions. As shown in Figure 3, the photoreceptors are marked as K1, K2, K3...Kn, where n is 8.

To sum up, a method and device for assigning addresses of LED light strings provided by the present invention have the following beneficial effects:

Two initial addresses are set for the light points, which reduces the duplication of initial addresses in the same LED light string. When assigning addresses to light points, if the two initial addresses of each light point in the LED light string are different or only one initial address is the same, The controller only needs to assign a new address to the light point through an initial address, and the bit width of the new light point address is equal to the bit width of any of the initial addresses. When the light point uses the new light point address to interactively display data, the data transmission efficiency is improved;

There is no need for address distribution lines, which saves wiring space, reduces costs, and avoids the problem of affecting the transparency effect due to the addition of address lines in the application of transparent screens.

It should be understood that the application of the present invention is not limited to the above examples, and those skilled in the art can make improvements or transformations according to the above descriptions, and all these improvements and transformations should belong to the protection scope of the appended claims of the present invention.

Claims (10)

1. A method for allocating lamp point addresses of LED light strings, characterized in that it comprises: The controller obtains the initial address of each light point in the LED light string; wherein, the initial address of the light point includes a first initial address and a second initial address; The controller judges whether the first initial address and the second initial address of each light point are repeated, and rewrites the light point address according to the duplication of the first initial address and the second initial address of the light point to obtain a new light point address; Among them, if the first initial address and the second initial address of each light point in the LED light string are different, the controller rewrites the address of the light point according to the first initial address or the second initial address of the light point; The first initial address of the light point is different but the second initial address is the same, the controller rewrites the light point address according to the first initial address, or the first initial address is the same but the second initial address is different, the controller rewrites the light point address according to the second initial address Address; if the first initial address and the second initial address of some light points in the LED light string are the same, and the light points with the same first initial address and the second initial address are different light points, the controller according to the first initial address Rewrite the lamp point address with the second initial address. 2. The method for allocating addresses of light points of LED light strings according to claim 1, wherein the controller judges whether the first initial address and the second initial address of each light point overlap, and according to the first initial address of the light point The step of rewriting the lamp point address to obtain a new lamp point address in case of repetition of the initial address and the second initial address includes: The controller rewrites the address of the light point according to the first initial address, the second initial address, or the first initial address and the second initial address of the light point in combination with the position number of the light point in the LED light string. 3. The method for allocating lamp point addresses of LED light strings according to claim 2, wherein the controller according to the first initial address, the second initial address or the first initial address and the second initial address of the light point The steps of rewriting the address of the light point in combination with the position number of the light point in the LED light string include: The controller sends the initial address of each light point and the position number of the corresponding light point in the LED light string to the LED light string. If the initial address received by each light point in the LED light string is equal to its own initial address, the corresponding light The initial address of the point itself is changed to the position number to obtain the new address of the corresponding light point. 4. The method for allocating addresses of light points of LED light strings according to claim 1, wherein the controller judges whether the first initial address and the second initial address of each light point overlap, and according to the first initial address of the light point The step of rewriting the address of the lamp point to obtain a new address of the lamp point also includes: If the first initial address and the second initial address of some light points in the LED light string are the same, and the light points with the same first initial address and the second initial address are the same light point, one of the light point pairs will be repeated Replace and then reassign addresses. 5. The method for allocating addresses of light points of LED light strings according to claim 1, wherein the step of the controller obtaining the initial addresses of each light point in the LED light string comprises: The controller sends an address reading command to each light point in the LED light string; among them, after receiving the address reading command, the light point will control the on-off state of the light-emitting component according to the address reading command; The controller controls the photoreceptor to read the on-off state of the light point and obtains the on-off state information fed back by the photoreceptor; The controller obtains the initial addresses of the light points according to the on-off status information, and reads the initial addresses of all the light points according to the order in which the light points are arranged in the LED light string. 6. The method for allocating addresses of LED light strings according to claim 1, characterized in that, after the address is rewritten, the address of the lamp will record that its initial address has been rewritten, and the address of the lamp whose address has been rewritten will not be rewritten. Its own new light point address. 7. The method for allocating addresses of light points of LED light strings according to claim 1, wherein the step of obtaining the initial addresses of each light point in the LED light string by the controller further includes: Pre-set the first initial address and the second initial address at the light point; Wherein, when rewriting the address of the lamp point, the first initial address remains unchanged, and the second initial address is modified to obtain a new address of the lamp point. 8. The method for allocating addresses of light points of LED light strings according to claim 1, wherein the controller judges whether the first initial address and the second initial address of each light point overlap, and according to the first initial address of the light point The step of rewriting the address of the lamp point to obtain a new address of the lamp point after the repetition of the initial address and the second initial address further includes: The controller performs display data interaction with the corresponding light point through the address of the new light point, so as to control the corresponding light point to display different grayscale images according to the display data. 9. A light point address allocation device for LED light strings applied to the light point address allocation method for LED light strings according to any one of claims 1-8, connected to the LED light strings, characterized in that it includes: a controller with the photoreceptor; where, The photoreceptor is connected to the controller and arranged opposite to the light point in the LED light string, the photoreceptor is used to read the on-off state of the light point and feed back the on-off state information to the controller; The controller is respectively connected to the photoreceptor and the LED light string, and the controller is used to obtain the initial address of each light point in the LED light string according to the on-off state information, and determine the first address of each light point. Whether the initial address and the second initial address are repeated, according to the duplication of the first initial address and the second initial address of the light point, rewrite the light point address to obtain a new light point address. 10. The lamp point address assignment device according to claim 9, wherein the photoreceptor is a photosensitive device.

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