CN112164356B - Error detection method and lighting fixture - Google Patents
Error detection method and lighting fixture Download PDFInfo
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- CN112164356B CN112164356B CN202010996058.1A CN202010996058A CN112164356B CN 112164356 B CN112164356 B CN 112164356B CN 202010996058 A CN202010996058 A CN 202010996058A CN 112164356 B CN112164356 B CN 112164356B
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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
- G09G3/006—Electronic inspection or testing of displays and display drivers, e.g. of LED or LCD displays
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
Abstract
The invention discloses an error detection method and a lighting fixture, which are used for a lighting detection application program of a liquid crystal display, wherein the error detection method comprises the following steps: the first time the ignition detection application is executed, calculating an error detection indicator for the ignition detection application and storing the error detection indicator in a non-volatile memory in which the ignition detection application resides, the error detection indicator comprising: a standard cyclic redundancy check code, an error checking and correcting code and an indicating code; according to the indication code, when the lighting detection application program is not executed for the first time, the lighting detection application program is subjected to error detection by using a standard cyclic redundancy check code, and whether the lighting detection application program can be corrected or not is judged according to the error detection and correction code; in the case of being correctable, the error code of the lighting detection application is corrected using the error checking and correcting code. The error detection method disclosed by the invention solves the problem of variation of the lighting detection program stored in the nonvolatile memory in the process of lighting detection of the liquid crystal display.
Description
Technical Field
The invention relates to the technical field of liquid crystal display, in particular to an error detection method and a lighting fixture.
Background
The liquid crystal display device has the advantages of good picture quality, small volume, light weight, low driving voltage, low power consumption, no radiation, relatively low manufacturing cost and the like, and is dominant in the field of flat panel display at present.
After the liquid crystal display of the liquid crystal display device completes each production process, it is necessary to perform lighting detection on whether the liquid crystal display has defects. The programmable devices in the lighting fixture can be used for lighting the liquid crystal screen, and the liquid crystal screens with different parameters have different clocks, resolutions and the like, so that the programmable devices configured by different lighting detection programs are required to light the corresponding liquid crystal screens. When the liquid crystal display is subjected to lighting detection such as aging and luminous index, due to the fact that the lighting detection program stored in the nonvolatile memory is prone to variation caused by the influence of factors such as high and low temperatures and humidity, when the lighting fixture for the lighting test is powered on, an error program is read from the nonvolatile memory, and abnormal liquid crystal display lighting detection such as different liquid crystal display lighting pictures occurs. At present, for the problem of variation of the lighting detection program in the nonvolatile memory, the lighting detection program can only be burned into the nonvolatile memory again or the nonvolatile memory can only be replaced by a downloader. Obviously, this reduces the lighting detection work efficiency of the liquid crystal panel of the liquid crystal display device, increasing the lighting detection cost.
Disclosure of Invention
The invention provides an error detection method and a lighting fixture aiming at the problems in the prior art, solves the problem of variation of a lighting detection program stored in a nonvolatile memory in the process of lighting detection of a liquid crystal display, improves the working efficiency of the lighting detection of the liquid crystal display device, and reduces the lighting detection cost.
According to a first aspect of the embodiments of the present invention, there is provided an error detection method for a lighting detection application of a liquid crystal display, the error detection method including:
calculating an error detection indicator of a lighting detection application when the lighting detection application is executed for the first time, and storing the error detection indicator in a non-volatile memory in which the lighting detection application resides, the error detection indicator comprising: a standard cyclic redundancy check code, an error checking and correcting code and an indication code for indicating that the ignition detection application is executed for the first time;
according to the indication code, when the lighting detection application program is not executed for the first time, utilizing the standard cyclic redundancy check code to detect the lighting detection application program, and judging whether the lighting detection application program can be corrected according to the error detection and correction code;
correcting an error code of the lighting detection application using the error checking and correcting code if the lighting detection application can be corrected.
Optionally, the standard cyclic redundancy check code includes: a first standard cyclic redundancy check code and a second standard cyclic redundancy check code, wherein the nonvolatile memory further stores a boot loader,
calculating an error detection indicator for the ignition detection application when the ignition detection application is executed for the first time comprises:
and judging whether the lighting detection application program is executed for the first time, and if the lighting detection application program is executed for the first time, calculating the first standard cyclic redundancy check code of the original code of the boot loader and the second standard cyclic redundancy check code and the error checking and correcting code of the original code of the lighting detection application program.
Optionally, the detecting, according to the indication code, an error of the lighting detection application program by using the standard cyclic redundancy check code when the lighting detection application program is not executed for the first time, and the determining, according to the error checking and correcting code, whether the lighting detection application program can be corrected includes:
judging whether the boot loader has an error or not in the case where the lighting detection application is not executed for the first time according to the indication code, prompting an error warning if the boot loader has an error,
and if the boot loader does not have an error, judging whether the lighting detection application program has an error, if the lighting detection application program does not have an error, operating the lighting detection application program, and if the lighting detection application program has an error, judging whether the lighting detection application program can be corrected according to the error check and the correction code.
Optionally, the determining whether the boot loader has an error includes:
calculating a first detection cyclic redundancy check code of the current code of the bootstrap loader, comparing the first detection cyclic redundancy check code with the first standard cyclic redundancy check code, if the first detection cyclic redundancy check code is the same as the first standard cyclic redundancy check code, the bootstrap loader does not have an error, and if the first detection cyclic redundancy check code is not the same as the first standard cyclic redundancy check code, the bootstrap loader has an error.
Optionally, the determining whether the lighting detection application program has an error includes:
and calculating a second detection cyclic redundancy check code of the current code of the lighting detection application program, comparing the second detection cyclic redundancy check code with the second standard cyclic redundancy check code, if the second detection cyclic redundancy check code is the same as the second standard cyclic redundancy check code, the lighting detection application program does not have an error, and if the second detection cyclic redundancy check code is different from the second standard cyclic redundancy check code, the lighting detection application program has an error.
Optionally, the determining whether the lighting detection application can be corrected according to the error checking and correcting code comprises:
decoding according to the error checking and correcting code to obtain an original code of the lighting detection application program;
and judging whether the error code of the lighting detection application program can be corrected or not according to the error correction information provided by the original code of the lighting detection application program obtained by decoding.
Optionally, determining whether the lighting detection application can be corrected according to the error checking and correcting code further comprises:
and if the lighting detection application program can be corrected, correcting the error code of the lighting detection application program by using the error checking and correcting code, updating and running the lighting detection application program, and prompting an error warning if the error code of the lighting detection application program cannot be corrected.
Optionally, the determining whether the lighting detection application is executed for the first time includes:
checking whether the indication code is stored in the nonvolatile memory, if not, the lighting detection application program is executed for the first time, and if so, the lighting detection application program is not executed for the first time.
Optionally, before determining whether the lighting detection application is executed for the first time, the error detection method further includes:
running the boot loader to enter an auto-load mode.
According to a second aspect of the embodiments of the present invention, there is provided a lighting fixture for a liquid crystal panel, including:
a non-volatile memory having stored therein: a boot loader, a lighting detection application, a standard cyclic redundancy check code, an error checking and correcting code, and an indication code for indicating that the lighting detection application is executed for the first time;
a programmable device configured to run the boot loader and the illumination detection application;
error detection means configured to perform the error detection method of any one of the preceding claims 1 to 9;
wherein the non-volatile memory is built in or external to the programmable device.
According to the error detection method and the lighting fixture of the lighting detection application program provided by the embodiment of the invention, the lighting fixture is provided with the programmable device and the nonvolatile memory. The nonvolatile memory stores therein: a boot loader and a lighting detection application, and a non-volatile memory is built in or out of the programmable device. Whether the indication code is stored in the nonvolatile memory is checked, and if not, the lighting detection application program is executed for the first time, and if so, the lighting detection application program is not executed for the first time. When the lighting detection application program is executed for the first time, a first standard cyclic redundancy check code of the original code of the boot loader, a second standard cyclic redundancy check code of the original code of the lighting detection application program and an error checking and correcting code are calculated, and the first standard cyclic redundancy check code, the second standard cyclic redundancy check code, the error checking and correcting code and an indicating code for indicating that the lighting detection application program is executed for the first time are stored in the nonvolatile memory. And judging whether the pilot loader has an error, judging whether the lighting detection application has an error when the pilot loader has no error, and providing an error warning when the pilot loader has an error. In the case where the boot loader has not made an error and the lighting detection application has made an error, if the error code of the lighting detection application can be corrected by the error check and correction code, the error code of the lighting detection application is corrected, the lighting detection application is updated and run, and if the error code of the lighting detection application cannot be corrected by the error check and correction code, an error warning is prompted. The problem of variation of the lighting detection program stored in the nonvolatile memory in the process of lighting detection of the liquid crystal display is solved, the lighting detection work efficiency of the liquid crystal display device is improved, and the lighting detection cost is reduced.
Calculating a first detection cyclic redundancy check code of the current code of the boot loader, comparing the first detection cyclic redundancy check code with a first standard cyclic redundancy check code, if the first detection cyclic redundancy check code is the same as the first standard cyclic redundancy check code, the boot loader does not have an error, and if the first detection cyclic redundancy check code is not the same as the first standard cyclic redundancy check code, the boot loader has an error. And calculating a second detection cyclic redundancy check code of the current code of the lighting detection application program, comparing the second detection cyclic redundancy check code with a second standard cyclic redundancy check code, if the second detection cyclic redundancy check code is the same as the second standard cyclic redundancy check code, judging that no error occurs in the lighting detection application program, and if the second detection cyclic redundancy check code is different from the second standard cyclic redundancy check code, judging that the error occurs in the lighting detection application program. And decoding the error checking and correcting code to obtain an original code of the lighting detection application program, and judging whether the error code of the lighting detection application program can be corrected or not according to error correction information provided by the original code of the lighting detection application program obtained by decoding. The error detection of the boot loader and the lighting detection application program, and the error correction and the update of the lighting detection application program do not need the participation of workers, so that the labor cost is reduced, and the error detection and correction efficiency of the lighting detection application program is improved.
Drawings
The above and other object features and advantages of the present invention will become more apparent from the following description of the embodiments of the present invention with reference to the accompanying drawings.
Fig. 1 is a schematic structural diagram illustrating a lighting fixture in the related art;
fig. 2 is a schematic structural diagram illustrating a lighting fixture according to a first embodiment of the present invention;
FIG. 3 is a flow chart illustrating a method for error detection in a lighting detection application in accordance with an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a lighting fixture according to a second embodiment of the invention.
Detailed Description
The invention will be described in more detail below with reference to the accompanying drawings. Like elements in the various figures are denoted by like reference numerals. For purposes of clarity, the various features in the drawings are not necessarily to scale. In addition, certain well known components may not be shown.
Numerous specific details of the invention are set forth in the following description in order to provide a more thorough understanding of the invention. However, as will be understood by those skilled in the art, the present invention may be practiced without these specific details.
Fig. 1 is a schematic structural diagram of a lighting fixture in the related art, and as shown in fig. 1, a lighting fixture 100 for detecting lighting of a liquid crystal display includes: programmable device 110 and non-volatile memory 120. The programmable device 110 may be an FPGA, an MCU, or the like, and the nonvolatile memory 120 may be an external FLASH or an internal FLASH of the programmable device 110. The nonvolatile memory 120 includes: region a and region B. The area a stores a Boot Loader (Boot Loader), and the area B stores a lighting detection Application (Application). The boot loader is used for powering on the loader and updating the program. The boot loader is a small program that is run before the lighting detection application is run, and the boot loader can initialize hardware devices and establish a mapping map of a memory space, so that the software and hardware environment of the lighting fixture 100 is brought to a proper state. The lighting detection application is a program segment running on the programmable device 110. In the subsequent operation after the power-on of the lighting fixture 100, the boot loader and the lighting detection application are first read from the nonvolatile memory 120, and then the programmable device 110 runs the boot loader and the lighting detection application. When the lighting detection such as aging and luminous index of the liquid crystal display is performed, due to the influence of factors such as high and low temperatures and humidity, the lighting detection program stored in the nonvolatile memory 120 is easy to be changed, so that an error program is read from the nonvolatile memory 120 when the lighting fixture 100 is powered on, and abnormal lighting detection of the liquid crystal display such as different lighting pictures of the liquid crystal display occurs. At present, for the problem of variation of the lighting detection program in the nonvolatile memory, the lighting detection program can only be burned into the nonvolatile memory again or the nonvolatile memory can only be replaced by a downloader. Obviously, this reduces the lighting detection work efficiency of the liquid crystal panel of the liquid crystal display device, increasing the lighting detection cost.
In view of this, the embodiment of the invention provides an error detection method and a lighting fixture for a lighting detection application. The following describes in detail an error detection method and a lighting fixture of a lighting detection application according to an embodiment of the present invention with reference to the accompanying drawings.
Fig. 2 is a schematic structural diagram of a lighting fixture according to a first embodiment of the present invention, and as shown in fig. 2, a lighting fixture 200 for detecting lighting of a liquid crystal display panel includes: a programmable device 210 and a non-volatile memory 220. The programmable device 210 may be an FPGA, an MCU, or the like, and the nonvolatile memory 220 may be an external FLASH or an internal FLASH of the programmable device 210. The nonvolatile memory 220 includes: region a, region B, region C, region D, region E, and region F. The area a stores a boot loader, and the area B stores a lighting detection application. The boot loader is used for powering on the loader and updating the program. The lighting detection application is a program segment running on the programmable device 210. The C area stores an error checking and correcting code ECC, the D area stores a first standard cyclic redundancy check code CRC1, the E area stores a second standard cyclic redundancy check code CRC2, and the F area stores an indicator code MARK indicating that the lighting detection application is executed for the first time. The error checking and correcting code ECC is an error checking and correcting code of the original code of the lighting detection application program calculated and stored to the nonvolatile memory 220 when the lighting detection application program is executed for the first time. The first standard cyclic redundancy check CRC1 is the cyclic redundancy check of the original code of the boot loader that was calculated and stored to the non-volatile memory 220 when the light detection application was first executed. The second standard cyclic redundancy check code CRC2 is a cyclic redundancy check code of the original code of the lighting detection application calculated and stored to the nonvolatile memory 220 when the lighting detection application is executed for the first time. The indicator code MARK is an indicator code stored in the nonvolatile memory 220 when the lighting detection application is executed for the first time. In the subsequent work after the lighting fixture 200 is powered on, the boot loader is first read from the nonvolatile memory 220 to enter the automatic loading mode, and then when the lighting detection application is executed for the first time, an error detection index of the lighting detection application is calculated and stored in the nonvolatile memory 220 where the lighting detection application is located, where the error detection index includes: the standard cyclic redundancy check code (comprising a first standard cyclic redundancy check code CRC1, a second standard cyclic redundancy check code CRC2, an error checking and correcting code ECC and an indication code MARK for indicating that the lighting detection application program is executed for the first time), according to the indication code MARK, when the lighting detection application program is not executed for the first time, the standard cyclic redundancy check code is used for carrying out error detection on the lighting detection application program, whether the lighting detection application program can be corrected or not is judged according to the error checking and correcting code, and under the condition that the lighting detection application program can be corrected, the error checking and correcting code ECC is used for correcting error codes of the lighting detection application program.
Fig. 3 is a flowchart illustrating an error detection method for a lighting detection application according to an embodiment of the present invention, and as shown in fig. 3, the error detection method for a lighting detection application according to an embodiment of the present invention specifically includes the following steps:
in step S310, the lighting fixture is powered on. The lighting jig 200 for the lighting detection of the liquid crystal panel includes: a programmable device 210 and a non-volatile memory 220. When the lighting fixture 200 is shipped from the factory, the area a of the programmable device 210 already stores the boot loader, and the area B already stores the lighting detection application. The boot loader is used for powering on the loader and updating the program. The lighting detection application is a program segment running on the programmable device 210.
In step S320, the lighting fixture enters the auto-loading mode. After the lighting fixture 200 is powered on, the programmable device 210 reads the boot loader stored in the a region of the nonvolatile memory 220 and enters the auto-load mode.
In step S330, it is determined whether the lighting detection application is executed for the first time. Step S340 is executed if the lighting detection application is executed for the first time, and step S380 is executed if the lighting detection application is not executed for the first time.
In this step, it is checked whether or not the indication code MARK indicating that the lighting detection application is executed for the first time is stored in the F area of the nonvolatile memory 220. If not, the ignition detection application is executed for the first time, and if so, the ignition detection application is not executed for the first time. Step S340 is executed if the lighting detection application is executed for the first time, and step S380 is executed if the lighting detection application is not executed for the first time.
In step S340, when the lighting detection application is executed for the first time, the first standard cyclic redundancy check CRC1 of the original code of the boot loader is calculated, and the first standard cyclic redundancy check CRC1 is stored to the D region in the nonvolatile memory 220.
In step S350, when the ignition detection application is executed for the first time, the second standard cyclic redundancy check CRC2 of the original code of the ignition detection application is calculated, and the second standard cyclic redundancy check CRC2 is stored to the E region in the nonvolatile memory 220.
In step S360, the error check and correction code ECC of the original code of the lighting detection application is calculated and stored in the C area of the nonvolatile memory 220 when the lighting detection application is executed for the first time.
In step S370, the indication code MARK indicating that the lighting detection application is executed for the first time is stored in the F area in the nonvolatile memory 220 when the lighting detection application is executed for the first time.
It is easily understood that the execution order of step S340, step S350, step S360 and step S370 is arbitrary, and step S3100 is executed after step S340, step S350, step S360 and step S370 are executed.
In step S380, it is determined whether the boot loader has an error. If the boot loader has not made an error, step S390 is performed, and if the boot loader has made an error, step S3110 is performed.
In this step, it is determined whether the boot loader has an error. In some embodiments, the current code of the boot loader (i.e., the cyclic redundancy check code of the boot loader currently stored in the A region of the non-volatile memory 220) is calculated to obtain a first detected cyclic redundancy check code CRC-A, the first detected cyclic redundancy check code CRC-A is compared to the first standard cyclic redundancy check code CRC1, if the first detected cyclic redundancy check code CRC-A is the same as the first standard cyclic redundancy check code CRC1, the boot loader is not in error, and if the first detected cyclic redundancy check code CRC-A is not the same as the second standard cyclic redundancy check code CRC1, the boot loader is in error.
In step S390, it is determined whether the lighting detection application has an error. Step S3100 is executed if the lighting detection application has not made an error, and step S3120 is executed if the lighting detection application has made an error.
In this step, it is determined whether the lighting detection application program is faulty. In some embodiments, the current code of the ignition detection application (i.e., the cyclic redundancy check code of the ignition detection application currently stored in the B region of the non-volatile memory 220 is calculated to obtain the second detection cyclic redundancy check code CRC-B, the second detection cyclic redundancy check code CRC-B is compared with the second standard cyclic redundancy check code CRC-2, if the two codes are the same, the ignition detection application does not have an error, and if the two codes are not the same, the ignition detection application does have an error.
In step S3100, the lighting detection application operates normally.
In this step, the lighting detection application program in the B region of the nonvolatile memory 220 is read to enter the running mode.
In step S3110, an error warning is issued. For example, a buzzer or LED or other peripheral device is used to prompt an error warning.
In step S3120, it is determined whether the lighting detection application can be corrected. Step S3130 is performed if the lighting detection application can be corrected, and step S3110 is performed if the lighting detection application cannot be corrected.
In this step, it is determined whether the lighting detection application can be corrected. In some embodiments, the original code of the lighting detection application is decoded according to the ECC of the ECC stored in the C region of the non-volatile memory 220; and judging whether the error code of the lighting detection application program can be corrected or not according to the error correction information provided by the original code of the lighting detection application program obtained by decoding. Step S3130 is performed if the error code of the lighting detection application can be corrected, and step S3110 is performed if the error code of the lighting detection application cannot be corrected.
In step S3130, the error code of the lighting detection application is corrected and updated. Step S3100 is performed.
In this step, the error code of the lighting detection application is corrected using the error check and correction code ECC stored in the C area of the nonvolatile memory 220, and the original code of the lighting detection application obtained by decoding is overwritten on the lighting detection application stored in the B area of the nonvolatile memory 220. Step S3100 is executed after the lighting detection application is updated.
Fig. 4 is a schematic structural diagram of a lighting fixture according to a second embodiment of the present invention, and as shown in fig. 4, a lighting fixture 400 for detecting lighting of a liquid crystal display panel includes: programmable device 410, non-volatile memory 420 and error detection means 430. The nonvolatile memory 420 stores therein: a boot loader, a lighting detection application, a standard cyclic redundancy check code, an error check and correction code and an indication code; a programmable device 410 configured to run the boot loader and the lighting detection application; an error detection apparatus 430 configured to perform the above-described error detection method; the nonvolatile memory 420 is internally or externally arranged on the programmable device 410, the first standard cyclic redundancy check code is calculated based on an original code of the boot loader, the second standard cyclic redundancy check code, the error checking and correcting code are calculated based on an original code of the lighting detection application, and the indication code indicates that the lighting detection application is executed for the first time.
According to the error detection method and the lighting fixture of the lighting detection application program provided by the embodiment of the invention, the lighting fixture for the lighting detection of the liquid crystal display comprises the following steps: programmable devices and non-volatile memories. The nonvolatile memory stores therein: a boot loader and a lighting detection application, and a non-volatile memory is built in or out of the programmable device. Whether the indication code is stored in the nonvolatile memory is checked, and if not, the lighting detection application program is executed for the first time, and if so, the lighting detection application program is not executed for the first time. When the lighting detection application program is executed for the first time, a first standard cyclic redundancy check code of the original code of the boot loader, a second standard cyclic redundancy check code of the original code of the lighting detection application program and an error checking and correcting code are calculated, and the first standard cyclic redundancy check code, the second standard cyclic redundancy check code, the error checking and correcting code and an indicating code for indicating that the lighting detection application program is executed for the first time are stored in the nonvolatile memory. And judging whether the pilot loader has an error, judging whether the lighting detection application has an error when the pilot loader has no error, and providing an error warning when the pilot loader has an error. In the case where the boot loader has not made an error and the lighting detection application has made an error, if the error code of the lighting detection application can be corrected by the error check and correction code, the error code of the lighting detection application is corrected, the lighting detection application is updated and run, and if the error code of the lighting detection application cannot be corrected by the error check and correction code, an error warning is prompted. The problem of variation of the lighting detection program stored in the nonvolatile memory in the process of lighting detection of the liquid crystal display screen is solved, the working efficiency of the lighting detection of the liquid crystal display screen of the liquid crystal display device is improved, and the lighting detection cost is reduced.
Calculating a first detection cyclic redundancy check code of the current code of the boot loader, comparing the first detection cyclic redundancy check code with a first standard cyclic redundancy check code, if the first detection cyclic redundancy check code is the same as the first standard cyclic redundancy check code, the boot loader does not have an error, and if the first detection cyclic redundancy check code is not the same as the first standard cyclic redundancy check code, the boot loader has an error. And calculating a second detection cyclic redundancy check code of the current code of the lighting detection application program, comparing the second detection cyclic redundancy check code with a second standard cyclic redundancy check code, if the second detection cyclic redundancy check code is the same as the second standard cyclic redundancy check code, judging that no error occurs in the lighting detection application program, and if the second detection cyclic redundancy check code is different from the second standard cyclic redundancy check code, judging that the error occurs in the lighting detection application program. And decoding the error checking and correcting code to obtain an original code of the lighting detection application program, and judging whether the error code of the lighting detection application program can be corrected or not according to error correction information provided by the original code of the lighting detection application program obtained by decoding. The error detection of the boot loader and the lighting detection application program, and the error correction and the update of the lighting detection application program do not need the participation of workers, so that the labor cost is reduced, and the error detection and correction efficiency of the lighting detection application program is improved.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
While embodiments in accordance with the invention have been described above, these embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments described. The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and it will be apparent to those skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope of the invention. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention and various embodiments with various modifications as are suited to the particular use contemplated.
Claims (10)
1. An error detection method for a lighting detection application of a liquid crystal display, the error detection method comprising:
calculating an error detection indicator of a lighting detection application when the lighting detection application is executed for the first time, and storing the error detection indicator in a non-volatile memory in which the lighting detection application resides, the error detection indicator comprising: a standard cyclic redundancy check code, an error checking and correcting code and an indication code for indicating that the ignition detection application is executed for the first time;
according to the indication code, when the lighting detection application program is not executed for the first time, utilizing the standard cyclic redundancy check code to detect the lighting detection application program, and judging whether the lighting detection application program can be corrected according to the error detection and correction code;
correcting an error code of the lighting detection application using the error checking and correcting code if the lighting detection application can be corrected.
2. The error detection method of claim 1 wherein the standard cyclic redundancy check code comprises: a first standard cyclic redundancy check code and a second standard cyclic redundancy check code, wherein the nonvolatile memory further stores a boot loader,
calculating an error detection indicator for the ignition detection application when the ignition detection application is executed for the first time comprises:
and judging whether the lighting detection application program is executed for the first time, and if the lighting detection application program is executed for the first time, calculating the first standard cyclic redundancy check code of the original code of the boot loader and the second standard cyclic redundancy check code and the error checking and correcting code of the original code of the lighting detection application program.
3. The error detection method of claim 2, wherein the detecting an error in the illumination detection application using the standard cyclic redundancy check code when the illumination detection application is not first executed based on the indication code, and determining whether the illumination detection application can be corrected based on the error checking and correcting code comprises:
judging whether the boot loader has an error or not in the case where the lighting detection application is not executed for the first time according to the indication code, prompting an error warning if the boot loader has an error,
and if the boot loader does not have an error, judging whether the lighting detection application program has an error, if the lighting detection application program does not have an error, operating the lighting detection application program, and if the lighting detection application program has an error, judging whether the lighting detection application program can be corrected according to the error check and the correction code.
4. The error detection method of claim 3, wherein determining whether the boot loader is faulty comprises:
calculating a first detection cyclic redundancy check code of the current code of the bootstrap loader, comparing the first detection cyclic redundancy check code with the first standard cyclic redundancy check code, if the first detection cyclic redundancy check code is the same as the first standard cyclic redundancy check code, the bootstrap loader does not have an error, and if the first detection cyclic redundancy check code is not the same as the first standard cyclic redundancy check code, the bootstrap loader has an error.
5. The error detection method of claim 3 wherein determining whether the illumination detection application is faulty comprises:
and calculating a second detection cyclic redundancy check code of the current code of the lighting detection application program, comparing the second detection cyclic redundancy check code with the second standard cyclic redundancy check code, if the second detection cyclic redundancy check code is the same as the second standard cyclic redundancy check code, the lighting detection application program does not have an error, and if the second detection cyclic redundancy check code is different from the second standard cyclic redundancy check code, the lighting detection application program has an error.
6. The error detection method of claim 3 wherein determining whether the illumination detection application can be corrected based on the error checking and correction code comprises:
decoding according to the error checking and correcting code to obtain an original code of the lighting detection application program;
and judging whether the error code of the lighting detection application program can be corrected or not according to the error correction information provided by the original code of the lighting detection application program obtained by decoding.
7. The error detection method of claim 6 wherein determining whether the illumination detection application can be corrected based on the error checking and correction code further comprises:
and if the lighting detection application program can be corrected, correcting the error code of the lighting detection application program by using the error checking and correcting code, updating and running the lighting detection application program, and prompting an error warning if the error code of the lighting detection application program cannot be corrected.
8. The error detection method of any one of claims 4, 5, and 7, wherein determining whether the lighting detection application is executed for the first time comprises:
checking whether the indication code is stored in the nonvolatile memory, if not, the lighting detection application program is executed for the first time, and if so, the lighting detection application program is not executed for the first time.
9. The error detection method of claim 8, wherein before determining whether the illumination detection application is executed for the first time, the error detection method further comprises:
running the boot loader to enter an auto-load mode.
10. The utility model provides a tool lights, acts on LCD screen, its characterized in that includes:
a non-volatile memory having stored therein: a boot loader, a lighting detection application, a standard cyclic redundancy check code, an error checking and correcting code, and an indication code for indicating that the lighting detection application is executed for the first time;
a programmable device configured to run the boot loader and the illumination detection application;
error detection means configured to perform the error detection method of any one of the preceding claims 1 to 9;
wherein the non-volatile memory is built in or external to the programmable device.
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