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Method and device for recognizing liquid crystal display screen and terminal

A technology of liquid crystal display and identification module, applied in the direction of measuring devices, static indicators, instruments, etc., can solve the problems of waste of resources and affecting the use of users

Inactive Publication Date: 2011-03-16
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At this stage, the LCD screens of the terminal products we see all use the corresponding fixed models. If the screen is accidentally damaged, it must be replaced by the same manufacturer, and the same type of display screen can be used. Although some terminal products It has also been compatible with two different types of LCD screens, such as the attached figure 1 As shown, the level of a GPIO (general-purpose input / output) pin (the identification pin of the LCD screen is connected to the power supply or ground) can be used to judge which type of LCD screen is used, but this method also has certain limitations. Because the update speed of the electronic market can be described as changing with each passing day, after a few years, perhaps the production of these two LCD screens has long been discontinued, so users have to replace new terminal products, which not only affects the use of users, but also affects the user experience. a waste of resources

Method used

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  • Method and device for recognizing liquid crystal display screen and terminal
  • Method and device for recognizing liquid crystal display screen and terminal
  • Method and device for recognizing liquid crystal display screen and terminal

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Combine below figure 2 The above-mentioned device is described in detail. This embodiment is mainly used for identification of liquid crystal display screens whose identification pins are connected to a fixed power supply.

[0036] The baseband motherboard shown in the figure is located in the mobile terminal, which includes a memory module, a voltage regulation module, and a microprocessing module connected to the memory module through interface 1, wherein:

[0037] The memory module is used to store the parameters of the driving chip, and an existing memory module is preferably used, but it may also be a module dedicated to storing the parameters of the driving chip. Because general embedded terminals provide large-capacity memory for users to use, and the current LCD screen module driver chip operating parameters are relatively simple, so a small part of the storage space can be directly divided in the memory to store a variety of The working parameters of the inte...

Embodiment 2

[0048] Combine below image 3 Another implementation method of the above device will be described.

[0049] This embodiment is suitable for identifying a liquid crystal display whose identification pin is grounded. The difference between this embodiment and Embodiment 1 is that the power supply in the liquid crystal display is grounded, and the fixed voltage connected to the voltage access terminal in the voltage regulation module of the baseband main board is the power supply voltage.

[0050] Likewise, this embodiment can still realize the identification of the liquid crystal display screen.

Embodiment 3

[0052] In order to realize the identification of various liquid crystal display screens, this embodiment provides the following methods:

[0053] Pre-save the driver chip parameters of one or more types of liquid crystal display; and pre-set the corresponding relationship between the driver chip parameters and the output voltage of the corresponding type of liquid crystal display;

[0054] When the liquid crystal display is connected, the voltage regulation module adjusts the output voltage of the liquid crystal display to within the processing range of the identification module according to a fixed voltage to obtain an adjusted voltage;

[0055] The identification module receives the regulated voltage of the voltage regulation module, and searches for the driver chip parameters corresponding to the regulated voltage according to the regulated voltage and the preset corresponding relationship;

[0056] The method further includes: a parameter sending module sending the driver ...

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Abstract

The invention discloses a method and a device for recognizing a liquid crystal display screen and a terminal, which can be automatically compatible with a plurality of liquid crystal display screens. The device comprises a storage module, a voltage regulating module and a recognition module, wherein the storage module is used for storing the driving chip parameter of the liquid crystal display screen; the voltage regulating module is used for regulating an output voltage of the liquid crystal display screen to the processing range of the recognition module according to a fixed voltage when connected to the liquid crystal display screen so as to obtain a regulating voltage; and the recognition module is used for storing the corresponding relation between the driving chip parameter and the regulating voltage of a corresponding type of liquid crystal display screen, receiving the regulating voltage of the voltage regulating module, and searching the driving chip parameter corresponding to the regulating voltage according to the regulating voltage and a preset corresponding relation.

Description

technical field [0001] The invention relates to the field of embedded mobile terminals, in particular to a method, device and terminal for identifying liquid crystal display screens. Background technique [0002] With the continuous development of science and technology, more and more embedded products are used in our daily life. They are popular for their small size and convenient use, and LCD screens are indispensable in many embedded products. It is part of people's most intuitive impression of this terminal product. The working principle of the LCD screen is that when the terminal system is turned on, the microprocessor first writes the working parameters corresponding to the internal driver chip of the LCD screen into the driver chip, and completes the initialization of the driver chip, so as to ensure that the LCD screen normal work. [0003] However, as the demand for terminal products continues to increase, the market for liquid crystal display screens is also incr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/36G06F13/10
CPCG01R19/0046G09G3/36G09G2370/042G06F13/10G09G3/2096
Inventor 杨春妮
Owner ZTE CORP
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