CN201207707Y - Mobile terminal having touch screen - Google Patents
Mobile terminal having touch screen Download PDFInfo
- Publication number
- CN201207707Y CN201207707Y CNU2008200224498U CN200820022449U CN201207707Y CN 201207707 Y CN201207707 Y CN 201207707Y CN U2008200224498 U CNU2008200224498 U CN U2008200224498U CN 200820022449 U CN200820022449 U CN 200820022449U CN 201207707 Y CN201207707 Y CN 201207707Y
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- CN
- China
- Prior art keywords
- touch screen
- screen controller
- described touch
- portable terminal
- screen
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model discloses a mobile terminal with a touch screen, comprising the touch screen, a touch screen controller connected with the touch screen and a base band processor communicated with the touch screen controller. The baseband processor and the touch screen controller communicate with each other through an analog I<2>C bus. The mobile terminal, through other interfaces (such as non-I<2>C interfaces of serial interfaces and the like) on the baseband processor, simulates I<2>C interfaces to communicate with the touch screen controller, thereby avoiding the occupation of the limited I<2>C interfaces on the baseband processor.
Description
Technical field
The utility model relates to moving communicating field, relates in particular to a kind of portable terminal with touch-screen.
Background technology
Touch-screen is because the convenience of its use also more and more obtains user's favor, and touch-screen mobile phone also becomes the focus of the market demand.
Realization touch-screen control is at present mainly passed through I by baseband processor
2C interface control touch screen controller.For passing through I
2The method of C interface control is because the I of baseband processor
2C interface is limited, even does not have I
2C interface, thus like this will with other I
2The application collision of the total line traffic control of C is not perhaps owing to there is I
2C interface and can not realize touch screen function.
The utility model content
Technical problem to be solved in the utility model is to provide a kind of portable terminal that has touch-screen, and the control to touch-screen in this portable terminal can lessly take the system port resource.
In order to solve the problems of the technologies described above, the utility model proposes a kind of portable terminal with touch-screen, comprise touch-screen, the touch screen controller that is connected with this touch-screen, and the baseband processor of communicating by letter with described touch screen controller, it is characterized in that, pass through Simulation with I between described baseband processor and the described touch screen controller
2The C bus communicates.
Wherein, described baseband processor comprises serial line interface, the I of this serial line interface and described touch screen controller
2C interface connects, Simulation with I
2The C bus communicates.
Preferably, described serial line interface is the enhanced general serial line interface.
In addition, the interrupt signal of described touch screen controller inputs to described baseband processor by the GPIO mouth.
Wherein, be provided with filter circuit between described touch-screen and the described touch screen controller, this filter circuit is arranged at least one data wire between described touch-screen and the described touch screen controller.
Further, described filter circuit is a capacitor filter, and the one end connects described data wire, other end ground connection.
Wherein, be provided with electrostatic discharge protection circuit between described touch-screen and the described touch screen controller, this electrostatic discharge protection circuit is arranged at least one data wire between described touch-screen and the described touch screen controller.
Further, described electrostatic discharge protection circuit is a voltage stabilizing didoe, the plus earth of this voltage stabilizing didoe, and negative pole is connected on the described data wire.
Implement the utility model by (the non-I such as serial ports for example of other interface on the baseband processor
2C interface) Simulation with I
2C interface and touch screen controller communicate, and have avoided taking the limited I of baseband processor
2C interface.And, when baseband processor comprises the enhanced general serial ports, come Simulation with I by this serial ports
2C interface not only can be saved the limited I of baseband processor
2The C interface resource can guarantee that more this interface has processing speed faster; Come Simulation with I by the enhanced general serial ports
2C interface can be realized the control to touch-screen fast, easily.
Description of drawings
Fig. 1 is the structured flowchart of an embodiment of a kind of portable terminal with touch-screen of the utility model;
Fig. 2 is an embodiment circuit structure diagram of a kind of portable terminal with touch-screen among Fig. 1.
Embodiment
The utility model is elaborated below in conjunction with accompanying drawing.
At first, briefly set forth principle of the present utility model.In the utility model, by removing I on the baseband processor
2Other interface of C interface (for example serial ports) is modeled as I
2C interface is by this Simulation with I
2The I of C interface and described touch screen controller
2C interface connects communication.This comes, and has saved the I of baseband processor
2C interface.
With reference to figure 1, illustrate the structured flowchart of an embodiment of a kind of portable terminal with touch-screen of the utility model.As shown in the figure, comprise touch-screen 1, touch screen controller 2 and baseband processor 3.
Wherein, four road signals of described touch-screen 1 (X+, Y+, X-, Y-) all export described touch screen controller 2 to by electrostatic discharge protection circuit and filter circuit (Fig. 1 do not show, can with reference to embodiment illustrated in fig. 2 and relevant the elaboration); Described baseband processor 3 comprises eGSP (Enhanced Generic Serial Port, enhanced general serial ports) interface; The I of described touch screen controller 2
2The clock line SCL of C interface and data wire SDA are connected with eGSP interface on the described baseband processor 3; This eGSP interface controls Simulation with I by work schedule
2C interface, and then adopt I with described touch screen controller 2
2The communication of C bus mode, thereby control touch-screen.
The signal that the touch of described touch screen controller 2 is interrupted is detected by the GPIO mouth of described baseband processor 3.
With reference to figure 2, illustrate an embodiment circuit structure diagram of a kind of portable terminal with touch-screen among Fig. 1.As shown in the figure, still comprise touch-screen 1, touch screen controller 2 and baseband processor 3.
Wherein, four road signals of described touch-screen 1 (X+, Y+, X-, Y-) export described touch screen controller 2 to; And,, on every data wire of described four road signals, set up filter circuit in order to reach signal transmission quality preferably.In the present embodiment, described filter circuit adopts filter capacitor to realize, capacitor C 1, C2, C3, C4 in promptly illustrating, and the one end is the data wire of corresponding X+, Y+, X-, four groups of signals of Y-respectively, the equal ground connection of the other end.Thereby, when having noise jamming on the data circuit, can be by described filter capacitor with interference filtering to guarantee transmission quality preferably.
Need to prove that described filter circuit is not limited to the capacitor filter in embodiment illustrated in fig. 2, it can also be rc filter circuit, LC filter circuit or the like.
In addition, also be connected to electrostatic discharge protection circuit on the data wire of described four road signals, i.e. four voltage stabilizing didoe D1, D2, D3, D4 shown in Fig. 2.
Wherein, the negative pole of zener diode D1 is connected plus earth with the data wire of X-signal; The negative pole of zener diode D2 is connected plus earth with the data wire of Y-signal; The negative pole of zener diode D3 is connected plus earth with the data wire of X+ signal; The negative pole of zener diode D4 is connected plus earth with the data wire of Y+ signal.
So, for the X+ data wire, when the voltage of transient state surpasses the voltage stabilizing value of D3, the D3 reverse breakdown, reverse current increases sharply, thus electric charge is introduced in the ground wire, has played the effect of antistatic; In like manner, the course of work of D1, D2, D4 also can draw in analogy, does not describe in detail at this.
Need to prove; described electrostatic discharge protection circuit is not limited to shown in Fig. 2 embodiment; it can also adopt clamping diode protective circuit, piezo-resistance protective circuit or Transient Voltage Suppressor etc.; owing to be universal circuit, be not described in detail for the electrostatic discharge protection circuit of three types of aftermentioneds.
The touch interrupt signal of described touch screen controller 2 inputs to by the PENIRQN pin among the GPIO of described baseband processor 3, is handled by baseband processor 3.
The SCL of described touch screen controller 2 and SDA pin are connected with the eGSP interface of described baseband processor 3, and described baseband processor 3 is by being modeled as I with described eGSP interface
2C interface is communicated by letter with described touch screen controller.
In addition, described baseband processor 3 also is not limited to come Simulation with I by the eGSP interface
2C interface, it can also be its other universal serial port that comprises, or super-enhanced universal serial port, or GPIO etc.
In this embodiment, because the eGSP interface of baseband processor is modeled as I
2The I of C interface and described touch screen controller
2C interface connects and communication, thereby has saved the I of baseband processor
2The C interface resource.And,, thereby utilize eGSP interface Simulation with I in this embodiment because the eGSP interface has interface processing speed faster with respect to the GPIO mouth
2C interface is better than and utilizes GPIO mouth Simulation with I
2C interface.
Above disclosed only is a kind of preferred embodiment of the utility model, can not limit the interest field of the utility model certainly with this, and therefore the equivalent variations of being done according to the utility model claim still belongs to the scope that the utility model is contained.
Claims (10)
1, a kind of portable terminal with touch-screen, comprise touch-screen, the touch screen controller that is connected with this touch-screen, and the baseband processor of communicating by letter with described touch screen controller, it is characterized in that, pass through Simulation with I between described baseband processor and the described touch screen controller
2The C bus communicates.
2, portable terminal according to claim 1 is characterized in that, described baseband processor comprises serial line interface, the I of this serial line interface and described touch screen controller
2C interface connects, Simulation with I
2The C bus communicates.
3, portable terminal according to claim 2 is characterized in that, described serial line interface is the enhanced general serial line interface.
4, according to each described portable terminal in the claim 1 to 3, it is characterized in that the interrupt signal of described touch screen controller inputs to described baseband processor by the GPIO mouth.
5, according to each described portable terminal in the claim 1 to 3, it is characterized in that, be provided with filter circuit between described touch-screen and the described touch screen controller, this filter circuit is arranged at least one data wire between described touch-screen and the described touch screen controller.
6, portable terminal according to claim 5 is characterized in that, described filter circuit is a capacitor filter, and the one end connects described data wire, other end ground connection.
7, according to each described portable terminal in the claim 1 to 3, it is characterized in that, be provided with electrostatic discharge protection circuit between described touch-screen and the described touch screen controller, this electrostatic discharge protection circuit is arranged at least one data wire between described touch-screen and the described touch screen controller.
8, portable terminal according to claim 7 is characterized in that, described electrostatic discharge protection circuit is a voltage stabilizing didoe, the plus earth of this voltage stabilizing didoe, and negative pole is connected on the described data wire.
9, portable terminal according to claim 5, it is characterized in that, be provided with electrostatic discharge protection circuit between described touch-screen and the described touch screen controller, this electrostatic discharge protection circuit is arranged at least one data wire between described touch-screen and the described touch screen controller.
10, portable terminal according to claim 9 is characterized in that, described electrostatic discharge protection circuit is a voltage stabilizing didoe, the plus earth of this voltage stabilizing didoe, and negative pole is connected on the described data wire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200224498U CN201207707Y (en) | 2008-05-15 | 2008-05-15 | Mobile terminal having touch screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200224498U CN201207707Y (en) | 2008-05-15 | 2008-05-15 | Mobile terminal having touch screen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201207707Y true CN201207707Y (en) | 2009-03-11 |
Family
ID=40466762
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200224498U Expired - Fee Related CN201207707Y (en) | 2008-05-15 | 2008-05-15 | Mobile terminal having touch screen |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201207707Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102681960A (en) * | 2011-03-09 | 2012-09-19 | 研祥智能科技股份有限公司 | Serial communication port circuit and computer |
| CN102830825A (en) * | 2011-06-14 | 2012-12-19 | 深圳市慧之星计算机有限公司 | Method and device for transmitting touch line field coordinate data through DDC (Direct Digital Control) channel |
| CN104407738A (en) * | 2014-11-19 | 2015-03-11 | 业成光电（深圳）有限公司 | Touch panel structure for avoiding metal ionization |
-
2008
- 2008-05-15 CN CNU2008200224498U patent/CN201207707Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102681960A (en) * | 2011-03-09 | 2012-09-19 | 研祥智能科技股份有限公司 | Serial communication port circuit and computer |
| CN102830825A (en) * | 2011-06-14 | 2012-12-19 | 深圳市慧之星计算机有限公司 | Method and device for transmitting touch line field coordinate data through DDC (Direct Digital Control) channel |
| CN104407738A (en) * | 2014-11-19 | 2015-03-11 | 业成光电（深圳）有限公司 | Touch panel structure for avoiding metal ionization |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090311 Termination date: 20110515 |