CN111862885B - A bidirectional data transmission LED control method, system and storage medium with an inner-encapsulated IC - Google Patents
A bidirectional data transmission LED control method, system and storage medium with an inner-encapsulated IC Download PDFInfo
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- CN111862885B CN111862885B CN202010727851.1A CN202010727851A CN111862885B CN 111862885 B CN111862885 B CN 111862885B CN 202010727851 A CN202010727851 A CN 202010727851A CN 111862885 B CN111862885 B CN 111862885B
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 57
- 230000002457 bidirectional effect Effects 0.000 title claims abstract description 52
- 238000000034 method Methods 0.000 title claims abstract description 34
- 238000006243 chemical reaction Methods 0.000 claims abstract description 10
- 230000008569 process Effects 0.000 claims description 4
- 230000003139 buffering effect Effects 0.000 claims 2
- 238000010586 diagram Methods 0.000 description 4
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 238000005538 encapsulation Methods 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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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
- G09G3/22—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 using controlled light sources
- G09G3/30—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 using controlled light sources using electroluminescent panels
- G09G3/32—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 using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/433—Content storage operation, e.g. storage operation in response to a pause request, caching operations
- H04N21/4331—Caching operations, e.g. of an advertisement for later insertion during playback
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
- Control Of El Displays (AREA)
Abstract
The invention provides a bidirectional data transmission LED control method and system of an internally-sealed IC and a storage medium. The method comprises the following steps: acquiring video data; caching the acquired video data; copying the cached video data into two parts, and respectively caching the copied two parts of video data; at odd cycles of the clock CLK _ D, taking out a part of the video data to perform a deserializing operation; converting the data after the string conversion operation into a return-to-zero code form, and sending the data to the left end of the bidirectional data transmission LED of the serially-connected inner-sealed IC through a channel; in an even cycle of the clock CLK _ D, taking out the rest video data to perform a deserializing operation; and converting the data after the string conversion operation into a return-to-zero code form, and sending the data to the right end of the bidirectional data transmission LED of the serially-connected inner-sealed IC through another channel. The technical scheme of the invention solves the problem that in the prior art, after a dead pixel appears on an LED display screen internally sealed with an IC, all LEDs connected in series with the LED display screen cannot work.
Description
Technical Field
The invention relates to the technical field of LED display screens, in particular to a bidirectional data transmission LED control method and system of an internal IC and a storage medium.
Background
At present, most of traditional LED display screens need an external IC to control the LED display screens to realize the function of video display, most of the LED display screens on the market are internally sealed IC LED display screens, but the LED display screens internally sealed IC also have the problem that LEDs connected in series cannot work after dead spots appear.
Disclosure of Invention
The application provides a bidirectional data transmission LED control method and system of an internal IC and a storage medium. The problem of among the prior art LED display screen of interior encapsulation IC have after the dead pixel appears, the LED of establishing ties rather than whole unable work is solved.
The technical means adopted by the invention are as follows:
a bidirectional data transmission LED control method of an internal IC comprises the following steps:
acquiring video data;
caching the acquired video data;
and processing the cached video data, so that the processed data is sent to the left end and the right end of the bidirectional data transmission LED of the serially-connected inner-sealed IC through two different channels.
Further, the processing the cached video data to send the processed data to the left and right ends of the bidirectional data transmission LED of the serially connected inner-sealed IC through two different channels includes:
copying the cached video data into two parts, and respectively caching the copied two parts of video data;
at odd cycles of the clock CLK, taking out a part of the video data to carry out a deserializing operation;
converting the data after the string conversion operation into a return-to-zero code form, and sending the data to the left end of the bidirectional data transmission LED of the serially-connected inner-sealed IC through a channel;
in even cycles of the clock CLK, taking out the rest video data to carry out the deserializing operation;
and converting the data after the string conversion operation into a return-to-zero code form, and sending the data to the right end of the bidirectional data transmission LED of the serially-connected inner-sealed IC through another channel.
Further, the output time of the copied two parts of video data are respectively positioned in odd cycles and even cycles of CLK, and the two parts of video data are separated by time division multiplexing.
Further, the contents of the two copied parts of video data are the same, and the sequence is opposite.
Further, the deserializing operation is to convert the video data into binary serial data.
A bidirectional data transmission LED control system of an internal encapsulation IC comprises:
the controller module is used for acquiring video data;
the video data caching module is used for caching the acquired video data;
and the video data copying and forwarding module is used for processing the cached video data, so that the processed data is sent to the left end and the right end of the two-way data transmission LED of the serially-connected inner-sealed IC through two different channels.
A computer-readable storage medium having a set of computer instructions stored therein; the computer instruction set realizes the bidirectional data transmission LED control method of the internal IC when being executed by a processor.
Compared with the prior art, the invention has the following advantages:
1. according to the control method provided by the invention, the bidirectional data output time is respectively positioned in the odd cycle and the even cycle of the clock CLK, and the two-way data output time is separated by a time division multiplexing mode, so that the bidirectional data transmission requirement of the bidirectional data transmission LED of the internal IC is ensured, the bidirectional data contents are the same, the sequence is opposite, and the data can not conflict during final output.
2. The control method provided by the invention can realize the control of the bidirectional data transmission LED of the internally-sealed IC, also respectively adds the backup redundant output channels at the output end, and can also realize the control of the bidirectional data transmission LED of the internally-sealed IC with breakpoint continuous transmission.
Based on the reason, the invention can be widely popularized in the fields of LED display screens and the like.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a flow chart of a method for controlling a bidirectional data transmission LED of an embedded IC according to the present invention.
Fig. 2 is a schematic diagram of an overall framework of a bidirectional data transmission LED control method of an embedded IC according to the present invention.
FIG. 3 is a timing control block diagram of a bidirectional data transmission LED control method of an embedded IC according to the present invention.
FIG. 4 is a block diagram of a bidirectional data transmission LED control method of the present invention with an embedded IC.
In the figure: 1. a controller module; 1.1, a video data caching module; 1.2, a video data copying and forwarding module; 2. the bidirectional data transmission LED of the inner encapsulation IC.
Detailed Description
In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
At present, the LED display screen internally sealed with the IC has the problem that all LEDs connected in series with the LED display screen cannot work after a dead pixel appears.
The invention provides a bidirectional data transmission LED control method of an internally-sealed IC (integrated circuit), which realizes the control of the bidirectional data transmission LED of the internally-sealed IC. The method specifically comprises the following steps: acquiring video data; caching the acquired video data; and processing the cached video data, so that the processed data is sent to the left end and the right end of the bidirectional data transmission LED of the serially-connected inner-sealed IC through two different channels.
The embodiments of the present invention will be described in detail with reference to the accompanying drawings.
A method for controlling a bidirectional data transmission LED with an embedded IC, as shown in fig. 1, includes the following steps:
and 3, processing the cached video data, so that the processed data is sent to the left end and the right end of the two-way data transmission LED of the serially-connected inner-sealed IC through two different channels. The method specifically comprises the following steps:
step 31, copying the cached video data into two parts, namely video data 1-N and video data N-1, and caching the video data 1-N and the video data N-1 in a new storage unit A and a new storage unit B respectively;
step 32, in the odd cycle of the clock CLK _ D, sequentially taking out the video data 1-N cached in the storage unit A for carrying out the serial conversion operation, and converting the video data 1-N into binary serial data 1-N;
step 33, converting the binary serial data 1-N after the string conversion operation into a return-to-zero code form, and sending the return-to-zero code form to the left end of the bidirectional data transmission LED of the serially-connected inner-sealed IC through a channel A;
step 34, in an even cycle of the clock CLK _ D, sequentially taking out the video data N-1 cached in the storage unit B for carrying out a serial conversion operation, and converting the video data N-1 into binary serial data N-1;
and step 35, converting the binary serial data N-1 subjected to the string conversion operation into a return-to-zero code form, and sending the return-to-zero code to the right end of the bidirectional data transmission LED of the serially-connected internal IC through the channel B.
In the above embodiment, as shown in fig. 2, the output time of the video data 1-N and the video data N-1 are respectively located in the odd cycle and the even cycle of the clock CLK, and they are separated by time division multiplexing to ensure the bidirectional data transmission requirement of the bidirectional data transmission LED of the embedded IC, and the content of the video data 1-N and the video data N-1 is the same, and the sequence is opposite, so that the data will not collide when finally outputting. In FIG. 2, CLK is the system clock; the SDA and the SDB are two paths of data signals; fig. 3 is a block diagram showing a data format of a bidirectional data transmission LED control method of an embedded IC according to the present invention, and the 0 code and the 1 code in fig. 3 are representations of data signals in an actual transmission process.
In the above embodiment, since the bidirectional data transmission LED of the embedded IC only has a data input/output pin and no clock input/output pin, and needs a continuous high level signal as the frame tail of the video data, there is a possibility that a long continuous signal appears in a general binary video data form, which may cause the bidirectional data transmission LED of the embedded IC to misjudge the frame tail, so that the binary video data is converted into a return-to-zero code form before being output
The method can realize the control of the bidirectional data transmission LED of the internally-sealed IC. Similarly, the backup redundant output channels are respectively added at the output ends, and the control of the bidirectional data transmission LED of the internally-sealed IC with breakpoint continuous transmission can be realized.
An embodiment of the present invention further provides a bidirectional data transmission LED control system with an internal IC, as shown in fig. 4, including: a controller module 1, a video data buffer module 1.1 and a video data copy and forward module 1.2, wherein
The controller module 1 is used for acquiring video data;
a video data caching module 1.1, configured to cache the obtained video data;
and the video data copying and forwarding module 1.2 is used for processing the cached video data, so that the processed data is sent to the left end and the right end of the bidirectional data transmission LED2 of the serially-connected embedded IC through two different channels.
For the embodiments of the present invention, the description is simple because it corresponds to the above embodiments, and for the related similarities, please refer to the description in the above embodiments, and the detailed description is omitted here.
The embodiment of the application also discloses a computer readable storage medium, wherein a computer instruction set is stored in the computer readable storage medium, and when being executed by a processor, the computer instruction set realizes the bidirectional data transmission LED control method of the embedded IC provided by any one of the above embodiments.
In the embodiments provided in the present application, it should be understood that the disclosed technology can be implemented in other ways. The above-described embodiments of the apparatus are merely illustrative, and for example, the division of the units may be a logical division, and in actual implementation, there may be another division, for example, multiple units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, units or modules, and may be in an electrical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a removable hard disk, a magnetic or optical disk, and other various media capable of storing program codes.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (5)
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| CN114697757B (en) * | 2020-12-31 | 2023-12-26 | 深圳市奥拓电子股份有限公司 | Method for transmitting high data rate video, LED display device and system thereof |
| TWI840958B (en) * | 2022-01-04 | 2024-05-01 | 大陸商北京集創北方科技股份有限公司 | Data transmission method of cascade drive circuit |
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