CN114252801A - Detection and graphical display method for local dimming module in liquid crystal television - Google Patents
Detection and graphical display method for local dimming module in liquid crystal television Download PDFInfo
- Publication number
- CN114252801A CN114252801A CN202111503394.9A CN202111503394A CN114252801A CN 114252801 A CN114252801 A CN 114252801A CN 202111503394 A CN202111503394 A CN 202111503394A CN 114252801 A CN114252801 A CN 114252801A
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- China
- Prior art keywords
- local dimming
- dimming module
- partition
- state
- partitions
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Links
- 238000000034 method Methods 0.000 title claims abstract description 14
- 238000001514 detection method Methods 0.000 title claims abstract description 9
- 239000004973 liquid crystal related substance Substances 0.000 title claims abstract description 7
- 238000005192 partition Methods 0.000 claims abstract description 34
- 239000003086 colorant Substances 0.000 claims abstract description 5
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
Images
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
- G01R31/52—Testing for short-circuits, leakage current or ground faults
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
- G01R31/54—Testing for continuity
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N17/00—Diagnosis, testing or measuring for television systems or their details
- H04N17/004—Diagnosis, testing or measuring for television systems or their details for digital television systems
Abstract
The invention relates to the field of television drive circuit detection, and provides a method for detecting and graphically displaying a local dimming module in a liquid crystal television in order to detect the problems of local dimming hardware drive, which comprises the following steps: step 1, a local dimming module MCU detects the state of partition hardware and stores the state data; step 2, the SOC of the television acquires state data stored by the MCU; step 3, the upper layer application acquires the row and column number of the partitions from the system configuration; and 4, drawing a partition lamp graph by the upper layer application according to the number of rows and columns of the partitions, and marking with different colors according to the state of each partition. By adopting the mode, relevant personnel can find problems and position the problems in time.
Description
Technical Field
The invention relates to the field of television drive circuit detection, in particular to a detection and graphical display method for a local dimming module in a liquid crystal television.
Background
In the prior art, a local dimming module adopts a method of lighting partitions one by one to check whether hardware driving of the partitions has problems, but generally, whether the partitions are open or not can be judged only through the brightness of the partitions according to the method, so that misjudgment or missed judgment is easily caused.
Disclosure of Invention
In order to facilitate detection of problems in local dimming hardware driving, the application provides a detection and graphical display method for a local dimming module in a liquid crystal television.
The technical scheme adopted by the invention for solving the problems is as follows:
the detection and graphical display method of the local dimming module in the liquid crystal television comprises the following steps:
step 1, a local dimming module MCU detects the state of partition hardware and stores the state data;
step 2, the SOC of the television acquires state data stored by the MCU;
step 3, the upper layer application acquires the row and column number of the partitions from the system configuration;
and 4, drawing a partition lamp graph by the upper layer application according to the number of rows and columns of the partitions, and marking with different colors according to the state of each partition.
Further, the states in step 1 include open circuit, short circuit and normal.
Further, in step 2, the SOC of the television acquires the state data stored by the MCU through a communication protocol.
Compared with the prior art, the invention has the beneficial effects that: the method can conveniently and visually display the hardware state of local light control on the television screen, distinguish the states through different colors, and facilitate related personnel to find problems in time.
Drawings
FIG. 1 is a flow chart of a method for detecting and graphically displaying a local dimming module in an LCD TV;
fig. 2 is a system structure diagram between the television SOC and the local dimming module MCU.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
As shown in fig. 1, the method for detecting and graphically displaying the local dimming module in the lcd tv includes:
step 1, a local dimming module MCU detects the state of partition hardware and stores the state data, wherein the state comprises open circuit, short circuit, normal state and the like; the local light control module MCU can obtain the backlight current value in the subarea backlight control circuit, and judges the states of normal, short circuit and the like according to the current value, and the MCU can scan the state of each subarea hardware one by one.
Step 2, the SOC of the television acquires state data stored by the MCU through a communication protocol, not limited to a serial interface, a parallel interface and various connection protocols, such as SPI, UART and I2C bus protocols; the system structure between the television SOC and the local dimming module MCU is shown in fig. 2.
In the embodiment, the SPI protocol is adopted to inquire the state command, and all the data of all the partitions are acquired at one time. The command format is as follows:
(1) write-read hardware status command
(2) Read hardware status data command
Firstly, sending a hardware state writing and reading command by the SOC, waiting for the MCU to enter a reading state, and then sending a hardware state data reading command, wherein H refers to the number of one row of the partitions, V refers to the number of one column of the partitions, and H x V refers to the total number of the partitions.
Step 3, the upper layer application acquires the row and column number of the partitions from the system configuration; and the upper application program calls a system layer interface, the system layer calls a driving layer interface, and the driving layer interface acquires the partition hardware data stored by the MCU through a communication protocol.
And 4, drawing a partition lamp graph by the upper layer application according to the number of rows and columns of the partitions, and marking with different colors according to the state of each partition. If the hardware state of the partitions is processed into a matrix graph, each small icon represents one hardware partition, the blue color represents that the partitions are normal, the red color represents that the partitions are short-circuited, and the black color represents that the partitions are short-circuited.
Claims (3)
1. The detection and graphical display method of the local dimming module in the liquid crystal television is characterized by comprising the following steps:
step 1, a local dimming module MCU detects the state of partition hardware and stores the state data;
step 2, the SOC of the television acquires state data stored by the MCU;
step 3, the upper layer application acquires the row and column number of the partitions from the system configuration;
and 4, drawing a partition lamp graph by the upper layer application according to the number of rows and columns of the partitions, and marking with different colors according to the state of each partition.
2. The method for detecting and graphically displaying the local dimming module in the lcd-tv set according to claim 1, wherein the states in step 1 include open circuit, short circuit and normal.
3. The method for detecting and graphically displaying the local dimming module in the lcd tv set according to claim 1, wherein in the step 2, the SOC of the tv set obtains the state data stored in the MCU through a communication protocol.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111503394.9A CN114252801A (en) | 2021-12-10 | 2021-12-10 | Detection and graphical display method for local dimming module in liquid crystal television |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111503394.9A CN114252801A (en) | 2021-12-10 | 2021-12-10 | Detection and graphical display method for local dimming module in liquid crystal television |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114252801A true CN114252801A (en) | 2022-03-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111503394.9A Pending CN114252801A (en) | 2021-12-10 | 2021-12-10 | Detection and graphical display method for local dimming module in liquid crystal television |
Country Status (1)
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|---|---|
| CN (1) | CN114252801A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105049836A (en) * | 2015-07-08 | 2015-11-11 | 四川长虹电器股份有限公司 | LED TV backlight partitioning rapid inspection method |
| CN109581187A (en) * | 2018-11-21 | 2019-04-05 | 安徽皖兴通信息技术有限公司 | A kind of detection method of power plane short circuit |
| CN111818284A (en) * | 2020-07-08 | 2020-10-23 | 康佳集团股份有限公司 | Regional dimming system and method for ultra-high-definition television |
-
2021
- 2021-12-10 CN CN202111503394.9A patent/CN114252801A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105049836A (en) * | 2015-07-08 | 2015-11-11 | 四川长虹电器股份有限公司 | LED TV backlight partitioning rapid inspection method |
| CN109581187A (en) * | 2018-11-21 | 2019-04-05 | 安徽皖兴通信息技术有限公司 | A kind of detection method of power plane short circuit |
| CN111818284A (en) * | 2020-07-08 | 2020-10-23 | 康佳集团股份有限公司 | Regional dimming system and method for ultra-high-definition television |
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| PB01 | Publication | ||
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20220329 |