CN105652973B - A kind of mainboard structure that notebook is mutually compatible with multi-source liquid crystal display - Google Patents
A kind of mainboard structure that notebook is mutually compatible with multi-source liquid crystal display Download PDFInfo
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- CN105652973B CN105652973B CN201511000114.7A CN201511000114A CN105652973B CN 105652973 B CN105652973 B CN 105652973B CN 201511000114 A CN201511000114 A CN 201511000114A CN 105652973 B CN105652973 B CN 105652973B
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- screen
- mainboard
- liquid crystal
- crystal display
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/16—Constructional details or arrangements
- G06F1/1613—Constructional details or arrangements for portable computers
- G06F1/1633—Constructional details or arrangements of portable computers not specific to the type of enclosures covered by groups G06F1/1615 - G06F1/1626
- G06F1/1684—Constructional details or arrangements related to integrated I/O peripherals not covered by groups G06F1/1635 - G06F1/1675
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
- G06F13/38—Information transfer, e.g. on bus
- G06F13/382—Information transfer, e.g. on bus using universal interface adapter
- G06F13/385—Information transfer, e.g. on bus using universal interface adapter for adaptation of a particular data processing system to different peripheral devices
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- Theoretical Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Human Computer Interaction (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
- Liquid Crystal Display Device Control (AREA)
Abstract
The invention discloses a kind of notebook mainboard structures mutually compatible with multi-source liquid crystal display, including notebook mainboard, liquid crystal display mainboard and screen line.The notebook provided by the invention mainboard structure mutually compatible with multi-source liquid crystal display is preset in basic input output system there are many with liquid crystal display shielding setting parameter correspondingly, and is preset with and is shielded the one-to-one ID of setting parameter and combine.Under notebook mainboard and liquid crystal display mainboard connection status, CPU selects the high level signal of signal output node or low level signal to be identified each screen and assigns different true value, then true value is combined and generates ID combination, basic input output system obtains the merging of ID group and corresponding screen setting parameter is called to be sent to CPU.In the present invention, each screen selects the level of signal output node to select the vacant state of signal output node or ground state to determine by corresponding screen.In the present invention, the level of signal output node is selected to identify screen in the second docking circuit being converted to for Panel Type notebook mainboard.
Description
Technical field
The present invention relates to notebook production technical field more particularly to a kind of notebook masters mutually compatible with multi-source liquid crystal display
Hardened structure.
Background technique
Notebook is as a kind of computer type being easy to carry about with one, deeply in the life and work of intervention people.Notes
This important component is liquid crystal display.Display equipment of the liquid crystal display as notebook, selection is varied, often a kind of
Notebook mainboard can meet the configuration needs of plurality of liquid crystals screen.So a kind of notebook is due to the difference or life of applicable object
It produces and needs, generally require that plurality of liquid crystals screen can be compatible with.
Summary of the invention
Technical problems based on background technology, it is mutually compatible with multi-source liquid crystal display that the invention proposes a kind of notebooks
Mainboard structure.
A kind of notebook proposed by the present invention mainboard structure mutually compatible with multi-source liquid crystal display, including notebook mainboard, liquid
Crystalline substance screen mainboard and screen line；
Notebook mainboard includes basic input output system, the docking circuit of CPU and first, wherein basic input and output system
System is communicated to connect with CPU；It include that potential nodes are shielded in a no less than choosing in first docking circuit, each choosing screen potential nodes is equal
It connect with power supply terminal and is connect with a signal input port of CPU；
Liquid crystal display mainboard is equipped with second and satisfies the need, and second satisfies the need including one-to-one with choosing screen potential nodes
Screen selects signal output node, and screen selects signal output node hanging or ground connection；
Screen line is for connecting notebook mainboard and liquid crystal display mainboard, and notebook mainboard and liquid crystal display mainboard connection status
Under, choosing screen potential nodes select signal output node short circuit to connect with corresponding screen；
There are many basic input output system internal presets shields setting parameter with liquid crystal display correspondingly, and is preset with and shields
The one-to-one ID combination of setting parameter；Under notebook mainboard and liquid crystal display mainboard connection status, choosing screen potential nodes are selected according to screen
The vacant state or ground state of signal output node obtain high level signal or low level signal；CPU selects signal according to each screen
The high level signal or low level signal of output node generate ID combination, and basic input output system obtains ID group and merges calling
Corresponding screen setting parameter is sent to CPU.
Preferably, each choosing screen potential nodes passes through a pull-up resistor in the first docking circuit and power supply terminal connects
It connects.
Preferably, each pull-up resistor resistance value is equal.
Preferably, second screen for docking each ground connection in circuit selects signal output node to pass through a pull down resistor and connects
Ground, and pull down resistor is less than corresponding pull-up resistor.
Preferably, each pull down resistor resistance value is equal in the second docking circuit.
Preferably, the quotient that pull-up resistor resistance value is obtained divided by pull down resistor resistance value is not less than 10.
Preferably, on each pin for the GPIO unit that choosing screen potential nodes are connected respectively to CPU.
The notebook provided by the invention mainboard structure mutually compatible with multi-source liquid crystal display, it is pre- in basic input output system
Shield setting parameter correspondingly with liquid crystal display equipped with a variety of, and is preset with and is combined with the screen one-to-one ID of setting parameter.Notebook
Under mainboard and liquid crystal display mainboard connection status, CPU selects each screen the high level signal or low level signal of signal output node
It is identified and assigns different true value, being then combined to true value and generating ID combination, basic input output system obtains ID
Group, which merges, calls corresponding screen setting parameter to be sent to CPU.In the present invention, each screen selects the level of signal output node by corresponding screen
The vacant state or ground state for selecting signal output node determine.
In the present invention, notebook mainboard is selected into signal to screen in the second docking circuit to being converted to for Panel Type
The level of output node identifies, so that identification of the same notebook mainboard to different liquid crystal displays is realized, with low cost
Mode realizes that multi-source liquid crystal display is compatible, and when notebook mainboard collocation different model liquid crystal display, without doing any change, convenient for life
Control is produced, improves and produces effect.
Detailed description of the invention
Fig. 1 is a kind of mainboard structure schematic diagram that notebook is mutually compatible with multi-source liquid crystal display proposed by the present invention；
Fig. 2 docks circuit with second for the first docking circuit and docks schematic diagram.
Specific embodiment
Referring to Fig.1, a kind of notebook proposed by the present invention mainboard structure mutually compatible with multi-source liquid crystal display, including notebook
Mainboard, liquid crystal display mainboard and screen line.
Notebook mainboard includes basic input output system, the docking circuit of CPU and first, wherein basic input and output system
System is communicated to connect with CPU.It include that potential nodes are shielded in a no less than choosing in first docking circuit, each choosing screen potential nodes is equal
It is connect by a pull-up resistor with power supply terminal+V3P3A, each choosing screen potential nodes is also inputted with a signal of CPU
Port connection.Specifically, on each pin for the GPIO unit that choosing screen potential nodes can be connected respectively to CPU.
Liquid crystal display mainboard is equipped with second and satisfies the need, and second satisfies the need including one-to-one with choosing screen potential nodes
Screen selects signal output node, and screen selects signal output node hanging or ground connection.It is over the ground that screen, which selects signal output node vacant state,
It disconnects；Screen selects under signal output node ground state, and a pull down resistor, and drop-down electricity are in series between ground terminal
Resistance is much smaller than corresponding pull-up resistor.That is, corresponding choosing screen potential nodes and screen select signal output node, when screen selects signal
When output node is connected with pull down resistor, pull-up electricity of the pull down resistor resistance value much smaller than corresponding choosing screen potential nodes connection
Resistance.
Screen line is for connecting notebook mainboard and liquid crystal display mainboard, and notebook mainboard and liquid crystal display mainboard connection status
Under, choosing screen potential nodes select signal output node short circuit to connect with corresponding screen, to guarantee to select screen potential nodes and corresponding screen
Select the current potential of signal output node equal in real time.
There are many basic input output system internal presets shields setting parameter with liquid crystal display correspondingly, and is preset with and shields
The one-to-one ID combination of setting parameter.Specifically, the liquid crystal display of each specification corresponds to a set of screen setting parameter, each ID combination
A kind of corresponding liquid crystal display specification.Under notebook mainboard and liquid crystal display mainboard connection status, choosing screen potential nodes select signal according to screen
The vacant state or ground state of output node obtain high level signal or low level signal；CPU selects signal defeated according to each screen
The high level signal or low level signal of egress generate ID combination, and basic input output system obtains ID group and merges calling phase
The screen setting parameter answered is sent to CPU.
Below in conjunction with a kind of tool, there are two choosing screen potential nodes and two screens to select the mainboard structure of signal output node to this
Invention is described further.
Referring to figure Fig. 2, in present embodiment, the first choosing choosing screen of screen potential nodes A0 and second potential nodes A1 passes through respectively
First pull-up resistor R1 and the second pull-up resistor R2 connection power supply terminal+V3P3A.For the ease of being explained to circuit structure,
The first screen is selected between signal output node ID0 and ground terminal respectively, the second screen selects signal output node ID1 and ground terminal
Between connect the first pull down resistor R3, the second pull down resistor R4.Under first pull down resistor R3 piece uploading state, the first screen selects signal defeated
Egress ID0 is connected with ground terminal, under the first pull down resistor R3 not piece uploading state, the first screen select signal output node ID0 with
Ground terminal disconnects；Similarly, under the second pull down resistor R4 piece uploading state, the second screen selects signal output node ID1 and ground terminal
It is connected, under the second pull down resistor R4 not piece uploading state, the second screen selects signal output node ID1 and ground terminal to disconnect.This implementation
In mode, the resistance of 10K Ω resistance value, the first pull down resistor R3 and is can be used in the first pull-up resistor R1 and the second pull-up resistor R2
The resistance of 1K Ω resistance value can be used in two pull down resistor R4.
Notebook power supply terminal+V3P3A operating voltage is 3.3V.Then, the first pull down resistor R3 and the second pull down resistor R4
Under piece uploading state, the first screen select signal output node ID0 and the second screen select signal output node ID1 voltage be respectively 3.3V ×
R3/R1+R3 and 3.3V × R4/ (R2+R4), i.e. 0.3V.Under first pull down resistor R3 and the second pull down resistor R4 not piece uploading state,
It is 3.3V that first screen, which selects signal output node ID0 and the second screen to select the voltage of signal output node ID1,.
In present embodiment, a voltage threshold can be preset in CPU, enabling 0.3V is low level, and 3.3V is high level.Tool
The voltage threshold of body can between 0.4V to 3.2V value, in present embodiment, value 1V.
In present embodiment, preset screen setting parameter combines corresponding relationship such as table one with ID in basic input output system.
Table one, screen setting parameter combine corresponding relationship with ID
| ID combination | Panel Type |
| 00 | Model A |
| 01 | Model B |
| 10 | Model C |
| 11 | Model D |
CPU is identified and is generated corresponding to the voltage of the first choosing choosing screen of screen potential nodes A0 and second potential nodes A1
True value " 0 " or " 1 ", specifically, when the voltage of the first choosing choosing screen of screen potential nodes A0 or second potential nodes A1 is low level
Corresponding true value " 0 " corresponds to true value when the voltage of the first choosing choosing screen of screen potential nodes A0 or second potential nodes A1 is high level
“1”。
So CPU can be raw according to the voltage of the first choosing screen potential nodes A0 according to the different conditions of the first pull down resistor R3
Signal Panel_ID0 is selected at the first screen of different true value；According to the different conditions of the second pull down resistor R4, CPU can be according to second
The second screen that the voltage of choosing screen potential nodes A1 generates different true value selects signal Panel_ID1, to generate different ID combinations.
It is specific as shown in Table 2.
Table two, ID combination producing table
| R3 state | R4 state | Panel_ID0 | Panel_ID1 | ID combination |
| Piece uploading | Piece uploading | 0 | 0 | 00 |
| Piece uploading | Not piece uploading | 0 | 1 | 01 |
| Not piece uploading | Piece uploading | 1 | 0 | 10 |
| Not piece uploading | Not piece uploading | 1 | 1 | 11 |
Corresponding relationship is combined with ID referring to preset screen setting parameter, basic input output system can be combined according to different ID
Call different screen setting parameters, thus, realize notebook assembling production in, same mainboard can the different liquid crystal display of automatic identification simultaneously
The purpose being configured.
In present embodiment, high level and low level identification, each pull-up resistor are carried out for the ease of setting voltage threshold
Resistance value is equal, and each pull down resistor resistance value is equal, and pull down resistor is less than pull-up resistor.In present embodiment, in order to guarantee high electricity
The difference of ordinary telegram pressure and low level voltage, pull-up resistor are 10 times of pull down resistor, when it is implemented, pull-up resistor resistance value divided by
The quotient that pull down resistor resistance value obtains is not less than 10.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
Anyone skilled in the art in the technical scope disclosed by the present invention, according to the technique and scheme of the present invention and its
Inventive concept is subject to equivalent substitution or change, should be covered by the protection scope of the present invention.
Claims (7)
1. a kind of notebook mainboard structure mutually compatible with multi-source liquid crystal display, which is characterized in that including notebook mainboard, liquid crystal display
Mainboard and screen line；
Notebook mainboard include basic input output system, CPU and first docking circuit, wherein basic input output system with
CPU communication connection；Include that potential nodes are shielded in no less than choosing in first docking circuit, each choosing shield potential nodes with confession
Electric terminal (+V3P3A) is connected and is connect with a signal input port of CPU；
Liquid crystal display mainboard is equipped with second and satisfies the need, and second satisfies the need including shielding choosing correspondingly with choosing screen potential nodes
Signal output node, screen select signal output node hanging or ground connection；
Screen line is selected for connecting notebook mainboard and liquid crystal display mainboard, and under notebook mainboard and liquid crystal display mainboard connection status
Screen potential nodes select signal output node short circuit to connect with corresponding screen；
There are many basic input output system internal presets shields setting parameter with liquid crystal display correspondingly, and is preset with and sets ginseng with screen
The one-to-one ID combination of number；Under notebook mainboard and liquid crystal display mainboard connection status, choosing screen potential nodes select signal according to screen
The vacant state or ground state of output node obtain high level signal or low level signal；CPU selects signal to export according to each screen
The high level signal or low level signal of node generate ID combination, and it is corresponding that basic input output system obtains ID group merging calling
Screen setting parameter is sent to CPU.
2. the notebook as described in claim 1 mainboard structure mutually compatible with multi-source liquid crystal display, which is characterized in that the first docking
Each choosing screen potential nodes passes through a pull-up resistor and connect with power supply terminal (+V3P3A) in circuit.
3. the notebook as claimed in claim 2 mainboard structure mutually compatible with multi-source liquid crystal display, which is characterized in that each pull-up electricity
It is equal to hinder resistance value.
4. the notebook as claimed in claim 2 or claim 3 mainboard structure mutually compatible with multi-source liquid crystal display, which is characterized in that second
Screen of each ground connection selects signal output node to pass through pull down resistor ground connection in docking circuit, and pull down resistor is less than pair
The pull-up resistor answered.
5. the notebook as claimed in claim 4 mainboard structure mutually compatible with multi-source liquid crystal display, which is characterized in that the second docking
Each pull down resistor resistance value is equal in circuit.
6. the notebook as claimed in claim 5 mainboard structure mutually compatible with multi-source liquid crystal display, which is characterized in that pull-up resistor
The quotient that resistance value is obtained divided by pull down resistor resistance value is not less than 10.
7. the notebook as described in claim 1 mainboard structure mutually compatible with multi-source liquid crystal display, which is characterized in that choosing screen current potential
Node is connected respectively on each pin of the GPIO unit of CPU.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511000114.7A CN105652973B (en) | 2015-12-28 | 2015-12-28 | A kind of mainboard structure that notebook is mutually compatible with multi-source liquid crystal display |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511000114.7A CN105652973B (en) | 2015-12-28 | 2015-12-28 | A kind of mainboard structure that notebook is mutually compatible with multi-source liquid crystal display |
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| Publication Number | Publication Date |
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| CN105652973A CN105652973A (en) | 2016-06-08 |
| CN105652973B true CN105652973B (en) | 2019-06-04 |
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| CN107636632B (en) * | 2017-05-27 | 2020-05-05 | 福建联迪商用设备有限公司 | Method and system for identifying liquid crystals of different manufacturers |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201233589Y (en) * | 2008-07-25 | 2009-05-06 | 深圳市无线开锋科技有限公司 | Double touch screen display apparatus |
| CN101566865A (en) * | 2008-06-08 | 2009-10-28 | 许文武 | Multi-working mode double screen notebook computer system and operating control method |
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2015
- 2015-12-28 CN CN201511000114.7A patent/CN105652973B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101566865A (en) * | 2008-06-08 | 2009-10-28 | 许文武 | Multi-working mode double screen notebook computer system and operating control method |
| CN201233589Y (en) * | 2008-07-25 | 2009-05-06 | 深圳市无线开锋科技有限公司 | Double touch screen display apparatus |
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