CN111897552A - Programming method for TCON drive IC - Google Patents
Programming method for TCON drive IC Download PDFInfo
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- CN111897552A CN111897552A CN202010812647.XA CN202010812647A CN111897552A CN 111897552 A CN111897552 A CN 111897552A CN 202010812647 A CN202010812647 A CN 202010812647A CN 111897552 A CN111897552 A CN 111897552A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Abstract
The invention discloses a write program method for a TCON drive IC, which comprises the following steps: in main software of a main board of the SOC machine core, dividing TCON drive IC program partitions, wherein different liquid crystal screen model catalogs are arranged under the partitions, a specific drive IC program is arranged under each catalog, and the drive IC program is matched with the liquid crystal screen model of the catalog; storing the write-program commands and write-program addresses aiming at different models of TCON drive ICs in a write-program command library of main software of a main board of the SOC machine core, and distinguishing the write-program commands and the write-program addresses by command serial numbers; adding a write program command option in a liquid crystal screen parameter ini file of main software of a SOC core mainboard; writing the currently matched liquid crystal screen model in a machine core memory before the SOC machine core main board is electrified; after the SOC core mainboard is electrified, the write-program controller carries out write-program operation by calling the liquid crystal screen parameter ini file matched with the current liquid crystal screen model and the TCON drive IC program. The method reduces the material and control cost of the TCON drive IC write stroke, and ensures the service life of the TCON drive IC.
Description
Technical Field
The invention relates to the technical field of liquid crystal televisions, in particular to a programming method for a TCON drive IC.
Background
In the industry of liquid crystal display televisions, with the comprehensive application of the TCONless technology, more and more TCON boards are developed and produced by television factories. Specific ICs on a TCON board generally include PMIC, pgmma, Levelshifter, and the like, and these specific ICs are generally referred to as TCON driver ICs. When the TCON board is produced, the TCON driver IC needs to write a program, and the current common write program mode is write program by a writing tool, that is, before the driver IC is mounted on a chip, the writing tool matched with the IC specification is used for writing program, but the following problems exist in this mode:
(1) the cost of the burning tool is high. The packaging, PIN definition and programming command of the drive ICs of different models are different, the burning tool must be matched with the drive IC model, and the burning tool has a certain service life because the parts for fixing the ICs are easy to age. So that more kinds of burning tools are needed to be prepared, and the management and equipment cost is increased.
(2) Program maintenance is difficult. When TCON driver ICs of the same model are matched with different liquid crystal displays (opencells), different driver IC programs need to be written in, and when writing is performed on the TCON driver ICs each time, a manufacturer needs to select a matched burning tool and a matched burning program. Further increasing the difficulty of managing the write program state.
Aiming at the TCONLESS mode which is applied in a large amount in the whole factory at present, both a TCON board and a core board are manufactured and controlled by the whole television factory, and some modes of writing programs to a TCON driving IC by adopting SOC main software also exist, but the problem that different TCON driving ICs and different liquid crystal screens are matched, and the program writing command and the program driving IC cannot be compatible can not be solved, so that the management difficulty to the SOC main software is caused.
Disclosure of Invention
The invention aims to overcome the defects in the prior art, and provides a programming method for a TCON drive IC, which manages drive IC programs in different states by using SOC main software of a television core and performs programming on the TCON drive IC by using a quick and reliable method.
In order to achieve the technical effects, the invention adopts the following technical scheme:
a write program method for a TCON driver IC, comprising the steps of:
dividing TCON drive IC program partitions in main software of a SOC core main board, wherein different liquid crystal display model directories are arranged under the partitions, a specific drive IC program is arranged under each directory, and the drive IC programs are matched with the liquid crystal display models of the directories;
storing the write-program commands and write-program addresses aiming at different models of TCON drive ICs in a write-program command library of main software of a main board of the SOC machine core, and distinguishing the write-program commands and the write-program addresses by command serial numbers;
adding a write program command option in a liquid crystal screen parameter ini file of main software of a SOC core mainboard;
writing the currently matched liquid crystal screen model in a machine core memory before the SOC machine core main board is electrified; the step is only needed to be operated before the SOC machine core main board is started for the first time;
after the SOC core mainboard is electrified, the write-program controller carries out write-program operation by calling the liquid crystal screen parameter ini file matched with the current liquid crystal screen model and the TCON drive IC program.
Further, the write program command option is associated with a command sequence number in a write program command library.
Furthermore, in the TCON driver IC program partition, different driver IC programs are included in different types of liquid crystal display directories, that is, the driver ICs may be collocated with the same driver IC, that is, the write command options in the corresponding liquid crystal display parameter ini file are the same; different drive ICs (integrated circuits) can be matched, namely, the write program command options in the corresponding liquid crystal screen parameter ini file are different.
Furthermore, the write command library and the write controller are stored in a BOOT program of main software of the SOC core main board, that is, in the startup phase, the write controller may call the write command library to perform a write operation on the TCON driver IC.
Further, the write controller specifically includes the following operations when performing the write operation by calling the liquid crystal screen parameter ini file matched with the current liquid crystal screen model and the TCON driver IC program:
s1, after the SOC core main board is electrified, the TCON board is powered through the upper screen power supply switch;
s2, loading a corresponding liquid crystal screen parameter ini file according to the liquid crystal screen model written in the machine core memory;
s3, indexing a corresponding write stroke command line in a write stroke command library according to the write stroke command option sequence number in the liquid crystal screen parameter ini file;
s4, main software of the SOC machine core main board indexes corresponding TCON drive IC programs in the TCON drive IC program partition according to the liquid crystal screen models written in the machine core memory, and performs write operation on the TCON drive IC through a matched write command line; and repeating the steps S1-S4 every time the SOC machine core mainboard is started.
Further, the write program operation in step S4 specifically includes the following steps:
A1. reading a program in a drive IC temporary memory on a current TCON board, and performing bit-by-bit verification with a program matched with the type of the liquid crystal screen in a TCON drive IC program partition of the SOC machine core main board;
A2. if the verification is successful, the SOC core main board does not write the TCON drive IC any more, and main software of the SOC core main board outputs screen data, control signals and backlight control immediately to enable the liquid crystal screen to display normally;
if the verification fails, the SOC core main board writes the matched write-stroke TCON drive IC program into the TCON drive IC temporary memory and the internal memory through the corresponding write-stroke command, and the step A3 is carried out;
A3. and after the writing process is finished, screen data, control signals and backlight control are output, so that the liquid crystal screen can normally display.
Further, the step a3 specifically includes:
A3.1. aiming at a TCON drive IC (namely all parameters are output immediately after a program is written) with an output parameter refreshed immediately, after the program is written, main software of a mainboard of an SOC machine core outputs on-screen data, a control signal and backlight control immediately, so that a liquid crystal screen displays normally;
A3.2. aiming at the TCON drive IC with output parameters needing power-off refreshing, after the write process is completed, main software of a mainboard of the SOC machine core immediately resets a power supply switch of an upper screen, and then outputs upper screen data, control signals and backlight control, so that a liquid crystal screen normally displays.
Further, the write program command adopts an I2C or SPI data format.
Furthermore, the temporary storage is a volatile memory, and is power-off without memory and without erasing life limit.
Furthermore, the internal Memory is a Non-Volatile Memory NVM (Non-Volatile Memory), and since the service life of the NVM is limited, the write command adopts a method of reading and verifying the program of the internal register of the driver IC first, which can ensure the service life of the NVM.
Compared with the prior art, the invention has the following beneficial effects:
in the programming method of the TCON drive IC, the SOC main software of the television core is used for managing the drive IC programs in different states, and a rapid and reliable method is used for programming the TCON drive IC, so that the material and control cost of the programming of the TCON drive IC is reduced, the service life of the TCON drive IC is ensured, the liquid crystal display can be rapidly lightened for practical inspection after the programming is finished, and the production efficiency is improved.
Drawings
Fig. 1 is a schematic diagram illustrating the matching between the driver IC program and the lcd model of the directory according to an embodiment of the present invention.
FIG. 2 is a schematic diagram of a write program command library in one embodiment of the invention.
Fig. 3 is a schematic diagram of a liquid crystal panel parameter ini file in one embodiment of the invention.
FIG. 4 is a schematic diagram of the flow of a write program operation in one embodiment of the invention.
FIG. 5 is a diagram illustrating the operation steps of a specific write program method in one embodiment of the invention.
Detailed Description
The invention will be further elucidated and described with reference to the embodiments of the invention described hereinafter.
Example (b):
the first embodiment is as follows:
a program writing method for TCON drive IC manages drive IC programs in different states by using a television core SOC main software and writes the TCON drive IC by a quick and reliable method. Before the write process is performed, the following operations are specifically included:
firstly, in the main software of the SOC movement main board, the TCON driver IC program is divided into partitions, specifically, different liquid crystal display model directories are provided under the partitions, and a specific driver IC program is included under each directory, and as shown in fig. 1, the driver IC program is matched with the liquid crystal display model of the directory.
Then, as shown in fig. 2, write commands and write addresses for different models of TCON driver ICs are stored in a main software write command library of the SOC core main board, and are distinguished by command serial numbers.
Next, add a write command option in the liquid crystal screen parameter ini file of the main software of the SOC core main board, as shown in fig. 3, which is associated with the command serial number in the write command library.
Before the SOC core mainboard is powered on, the currently matched liquid crystal screen model is written into the core memory, namely after the SOC core mainboard is powered on, the SOC calls a liquid crystal screen parameter ini file matched with the current liquid crystal screen model and a TCON drive IC program.
Specifically, in this embodiment, the write command library and the write controller of the SOC are placed in the BOOT program of the SOC main software, that is, in the BOOT stage, the write controller may call the write command library to perform the write operation on the TCON driver IC.
Preferably, as shown in fig. 4, in this embodiment, the writing program controller specifically includes the following operations when calling the liquid crystal panel parameter ini file matched with the current liquid crystal panel model and the TCON driver IC program to perform the writing program operation:
s0. before the SOC core mainboard is powered on, writing the current matched LCD model of the mainboard into the core memory;
s1, after the SOC core main board is electrified, the TCON board is powered through the upper screen power supply switch;
s2, loading a corresponding liquid crystal screen parameter ini file according to the liquid crystal screen model written in the machine core memory;
s3, indexing a corresponding write stroke command line in a write stroke command library according to the write stroke command option sequence number in the liquid crystal screen parameter ini file;
and S4, the main software of the SOC machine core main board indexes the corresponding TCON drive IC program in the TCON drive IC program partition according to the liquid crystal screen model written in the machine core memory, and performs the program writing operation on the TCON drive IC through the matched program writing command line.
In practical operation, the SOC core motherboard operates the above steps S0 to S4 for the first time of power-on, and only repeats the above steps S1 to S4 every time of power-on.
Specifically, the write program command in this embodiment may use an I2C or SPI data format.
More specifically, as shown in fig. 5, in the present embodiment, the write program operation in step S4 specifically includes the following steps:
A1. reading a program in a drive IC temporary memory on a current TCON board, and performing bit-by-bit verification with a program matched with the type of the liquid crystal screen in a TCON drive IC program partition of the SOC machine core main board;
A2. if the verification is successful, the SOC core main board does not write the TCON drive IC any more, and main software of the SOC core main board outputs screen data, control signals and backlight control immediately to enable the liquid crystal screen to display normally;
if the verification fails, the SOC core main board writes the matched write-stroke TCON drive IC program into the TCON drive IC temporary memory and the internal memory through the corresponding write-stroke command, and the step A3 is carried out;
A3. in this step, the SOC main software provides different operation methods specifically for 2 different types of TCON driver ICs, specifically including:
aiming at a TCON drive IC (all parameters are output immediately after a program is written) with an output parameter refreshed immediately, after the program is written, main software of a mainboard of an SOC machine core outputs on-screen data, a control signal and backlight control immediately, so that a liquid crystal screen displays normally;
aiming at the TCON drive IC with output parameters needing power-off refreshing, after the write process is completed, main software of a mainboard of the SOC machine core immediately resets a power supply switch of an upper screen, and then outputs upper screen data, control signals and backlight control, so that a liquid crystal screen normally displays.
Specifically, in the embodiment, the temporary Memory is a Volatile Memory, the internal Memory is a Non-Volatile Memory, and since the service life of the Non-Volatile Memory (NVM) built in the TCON driver IC is limited, the write program command adopts a method of reading and verifying the program of the internal temporary Memory of the driver IC first, so that the service life of the NVM can be ensured (the temporary Memory has no service life limitation).
It will be understood that the above embodiments are merely exemplary embodiments taken to illustrate the principles of the present invention, which is not limited thereto. It will be apparent to those skilled in the art that various modifications and improvements can be made without departing from the spirit and substance of the invention, and these modifications and improvements are also considered to be within the scope of the invention.
Claims (10)
1. A write program method for a TCON driver IC, comprising the steps of:
dividing TCON drive IC program partitions in main software of a SOC core main board, wherein different liquid crystal display model directories are arranged under the partitions, a specific drive IC program is arranged under each directory, and the drive IC programs are matched with the liquid crystal display models of the directories;
storing the write-program commands and write-program addresses aiming at different models of TCON drive ICs in a write-program command library of main software of a main board of the SOC machine core, and distinguishing the write-program commands and the write-program addresses by command serial numbers;
adding a write program command option in a liquid crystal screen parameter ini file of main software of a SOC core mainboard;
writing the currently matched liquid crystal screen model in a machine core memory before the SOC machine core main board is electrified;
after the SOC core mainboard is electrified, the write-program controller carries out write-program operation by calling the liquid crystal screen parameter ini file matched with the current liquid crystal screen model and the TCON drive IC program.
2. The write method for the TCON driver IC of claim 1, wherein the write command option is associated with a command sequence number in a write command library.
3. The write programming method for the TCON driver IC of claim 1, wherein the TCON driver IC program partition includes different driver IC programs under different lcd screen model directories.
4. The write programming method for the TCON driver IC according to claim 1, wherein the write programming command library and the write controller are stored in a BOOT program of main software of a main board of the SOC core.
5. The write program method for the TCON driver IC according to any one of claims 1 to 4, wherein the write program controller calls the lcd parameter ini file matched with the current lcd model and the TCON driver IC program to perform the write program operation, which specifically includes the following operations:
s1, after the SOC core main board is electrified, the TCON board is powered through the upper screen power supply switch;
s2, loading a corresponding liquid crystal screen parameter ini file according to the liquid crystal screen model written in the machine core memory;
s3, indexing a corresponding write stroke command line in a write stroke command library according to the write stroke command option sequence number in the liquid crystal screen parameter ini file;
and S4, the main software of the SOC machine core main board indexes the corresponding TCON drive IC program in the TCON drive IC program partition according to the liquid crystal screen model written in the machine core memory, and performs the program writing operation on the TCON drive IC through the matched program writing command line.
6. The write program method for the TCON driver IC of claim 5, wherein the write program operation in step S4 specifically comprises the following steps:
A1. reading a program in a drive IC temporary memory on a current TCON board, and performing bit-by-bit verification with a program matched with the type of the liquid crystal screen in a TCON drive IC program partition of the SOC machine core main board;
A2. if the verification is successful, the SOC core main board does not write the TCON drive IC any more, and main software of the SOC core main board outputs screen data, control signals and backlight control immediately to enable the liquid crystal screen to display normally;
if the verification fails, the SOC core main board writes the matched write-stroke TCON drive IC program into the TCON drive IC temporary memory and the internal memory through the corresponding write-stroke command, and the step A3 is carried out;
A3. and after the writing process is finished, screen data, control signals and backlight control are output, so that the liquid crystal screen can normally display.
7. The write program method for the TCON driver IC according to claim 6, wherein the step a3 specifically comprises:
A3.1. aiming at a TCON drive IC with an output parameter refreshed instantly, after a write stroke is finished, main software of a mainboard of an SOC machine core outputs on-screen data, a control signal and backlight control instantly to enable a liquid crystal screen to display normally;
A3.2. aiming at the TCON drive IC with output parameters needing power-off refreshing, after the write process is completed, main software of a mainboard of the SOC machine core immediately resets a power supply switch of an upper screen, and then outputs upper screen data, control signals and backlight control, so that a liquid crystal screen normally displays.
8. The write stroke method for the TCON driver IC according to claim 5, wherein the write stroke command is in I2C or SPI data format.
9. The write programming method for the TCON driver IC according to claim 6, wherein the temporary memory is a volatile memory.
10. The write programming method for the TCON driver IC according to claim 6, wherein the internal memory is a nonvolatile memory.
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Cited By (1)
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