CN100399402C - Time sequence controller with external transmission interface and electronic product using said controller - Google Patents
Time sequence controller with external transmission interface and electronic product using said controller Download PDFInfo
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- CN100399402C CN100399402C CNB2004100786472A CN200410078647A CN100399402C CN 100399402 C CN100399402 C CN 100399402C CN B2004100786472 A CNB2004100786472 A CN B2004100786472A CN 200410078647 A CN200410078647 A CN 200410078647A CN 100399402 C CN100399402 C CN 100399402C
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Abstract
The present invention relates to a time sequence controller for a panel displayer, which has the function of dynamically setting display parameters of the panel displayer. The present invention provides a main control unit and an external transmission interface. The main control unit is connected with a bus and a register, and is used for accessing a preset value of the display parameter, and the preset valve of the display parameter is written in the register. The external transmission interface comprises a driven unit. The driven unit is connected with the bus and the register and is used for receiving a self-fixing valve of the display parameter through the bus, and the self-fixing valve of the display parameter is written into the register to replace the originally stored display parameter. The present invention achieves the purpose of dynamically regulating and correcting display parameters of hardware.
Description
Technical field
The present invention has the function of the display parameter of dynamic setting flat-panel screens relevant for a kind of time schedule controller that is applied to flat-panel screens.
Background technology
The technology of special IC circuit (ASIC) has been widely used in various system synthesises field.The main element of control LCD (LCD) is called time schedule controller (Timing Controller), is comprehensively formed by highly special ASIC.
As shown in Figure 1a, be the liquid crystal display device structure figure of routine.Mainly comprise be used for display frame display panel 116 and control display panel 116 time schedule controller 100.Data Data_In (data input) from outside input timing controller 100, comprise view data and control command, in time schedule controller 100, handle, behind the format transformation, from row driver 112 and line driver 112 difference input display panels 116, so that display panel 116 shows an output picture.More detailed structure is slightly different with each tame manufacturer of specification, so conventional conception repeats no more.Yet, usually in the process of making LCD, many hardware characteristics are arranged, be called display parameter, for example fast-response time table (fastresponse time), digital character used in proper names and in rendering some foreign names agate table (digital gamma) and temperature compensation table (temperature compensation), when dispatching from the factory,, be accessed in the storer in the mode of parameter through after the product test adjustment.The display parameter that just determine when these dispatch from the factory are referred to as the preset value of display parameter at this.
Shown in Fig. 1 b, in time schedule controller 100, comprised register 102 and main control unit 104, and a bus 108.The preset value of above-mentioned display parameter is stored in one and is connected on the storer 106 of bus 108.This bus 108 is conventional criteria normally, for example IC data bus (I2C), or serial peripheral interface (SPI).Main control unit 104 is by bus 108, the preset value of these display parameter in the access memory 106, and deposit in the register 102, make the preset value of time schedule controller 100 according to these display parameter, by row driver 112 and line driver 112 control display panels 116, allow the output picture reach default effect.
So the flow process of whole use is shown in Fig. 1 c, at first in step S110, system power supply is connected, then in step S120, the preset value of the display parameter in the main control unit access memory 106, it is appropriate that time schedule controller 100 is provided with, and in step S130, this has been provided with appropriate time schedule controller 100 at last, by row driver 112 and line driver 112, enable display panel 116,, convert the output picture to the data Data_In that receives.
Because time schedule controller is the special ASIC of a kind of height, common same time schedule controller is difficult to re-use (re-use) LCD in different size.Parameter preset promptly is accessed in the storer 106 during fabrication in advance in addition, and the thing that parameter becomes a difficulty is adjusted in the feasible back of dispatching from the factory.Though can adjust the output picture by changing Data_In, adjusted Data_In passes through the preset value re-treatment of time schedule controller again, has often sacrificed the quality of brightness or contrast, cost is quite high.Therefore sometimes can wish directly to adjust display parameter to improve the output picture,, omit the unnecessary processing program even some function of directly closing down in the time schedule controller makes the Data_In through special processing be directly changed into the output picture.
Summary of the invention
In view of this, one of embodiment of the invention provides a time schedule controller, has the function of dynamic setting flat-panel screens display parameter.This time schedule controller comprises:
One register, required display parameter when storing a flat-panel screens display frame;
One bus, the display parameter of being imported by an external device (ED) in order to transmission are from definite value;
One main control unit is connected to this bus and this register, in order to this flat-panel screens the unloading phase one preset value write this register, as these required display parameter of display frame; And
One driven unit is connected to this bus and this register, in order to receiving these display parameter from definite value by this bus, and writes this register as these required display parameter of display frame.
Another embodiment of the present invention provides a kind of flat-panel screens, has the function of dynamic setting display parameter, except comprising above-mentioned time schedule controller, also comprises a display panel, is connected to this time schedule controller, in order to show this output image.This flat-panel screens can be LCD or electroluminescent display.
The present invention more provides a kind of electronic product, has the function that dynamically to set display parameter, except comprising above-mentioned flat-panel screens, outside display image, also comprise a power management module, be connected to this flat-panel screens, in order to this electronic product and the required power supply of this flat-panel screens to be provided.This electronic product can be personal digital assistant, mobile phone or mobile computer.
Description of drawings
Fig. 1 a is conventional plane display device structure figure.
Fig. 1 b is conventional internal transmission interface structure figure.
Fig. 1 c is the process flow diagram of conventional control method.
Fig. 2 a is the structural drawing of flat-panel screens of the present invention.
Fig. 2 b is the structural drawing of transmission interface of the present invention.
Fig. 2 c is the process flow diagram of control method of the present invention.
Fig. 3 is the electronic product structural drawing of the embodiment of the invention.
Symbol description
100～time schedule controller, 102～register
104～main control unit, 106～storer
108～bus, 112～row driver
114～line driver, 116～display panel
118～power management module, 200～time schedule controller
202～driven unit, 204～external device (ED)
206～switch, 300～electronic product
Embodiment
Shown in Fig. 2 a, plane display device structure figure for one of embodiment of the invention, wherein main control unit 104, storer 106, row driver 112, line driver 112 and display panel 116 all are as good as with routine, but the part of core provides an Improvement type time schedule controller 200 to replace time schedule controller 100, in the middle of comprised a driven unit 202, in order to the function of external transmission interface to be provided.Identical with conventional time schedule controller 100, this time schedule controller 200 receives after the Data_In, according to various display parameter translation data, again with specific form output signal to row driver 112 and line driver 112, make display panel 116 display images.
Shown in Fig. 2 b, be the structural drawing of transmission interface of the present invention.The function of main control unit 104 is constant, is used for after the flat-panel screens start, and by bus 108, the preset value of the storage in the access memory 106, and write register 102.Finish when writing, main control unit 104 does not just have other task, so can automatic or driven shutoff.Bus 108 is connected to driven unit 202, and has external interface and can connect for external device (ED) 204.Import display parameter from definite value from the external world if necessary, just external device (ED) 204 is connected to bus 108, the transfer protocol with relevant by driven unit 202, from definite value, writes register 102 with these display parameter, the display parameter during as execution.
In this embodiment, bus 108 employed specifications can be System Management Bus (SMBUS), IC data bus (I2C) or serial peripheral interface (SPI) one of them.And storer 106 can be electro-erasable programmable storer (EEPROM), flash Erasable Programmable Read Only Memory EPROM (Flash) one of them.Required display parameter when carrying out can comprise digital character used in proper names and in rendering some foreign names agate table, in order to brightness and color temperature correction function to be provided; The fast-response time table is in order to adjusting reaction time; And temperature compensation table, the fast-response time during in order to adjusting varying environment temperature.And this external device (ED) 204 can be any device that possesses bus 108 consistent interfaces, and PDA for example also can be patchcord of a computing machine collocation, plug the external-connected port of bus 108 after, the application software by specialization carries out data transmission.
Behind the time schedule controller 200 external external device (ED)s 204, this external device (ED) 204 is except importing display parameter from definite value, in some cases, such as Data_In has passed through special processing, do not wish that time schedule controller 200 repeats to process again, also can import specific control command to driven unit 202, some function in the time schedule controller 200 is closed down.In another embodiment, this driven unit 202 comprises a switch 206, the conducting of this bus 108 of may command between storer 106 and external device (ED) 204.This switch is default shutoff of when start, has only the main control unit 104 can access memory 106.Have only after external device (ED) 204 is connected to bus 108 and imports specific order, driven unit 202 just can be connected switch 206, makes external device (ED) 204 comprise access to carry out various application by the data in bus 108 access memories 106.
So the flow process of whole use is shown in Fig. 2 c, at first in step S210, system power supply is connected, and then in step S220, display parameter preset value in main control unit 104 access memories 106 deposits in the register 102, the display parameter during as execution.Along with the access of storer 106 is finished, main control unit 104 just can turn-off.This moment, step S250 began to carry out, and display panel 116 starts and accept the control of time schedule controller 200, according to the display parameter of being stored in the register 102, and the beginning display image.Different with routine techniques is, the invention provides an external transmission interface, provides the particular outer device by this interface the hardware setting of flat-panel screens directly to be adjusted.In step S230, external device (ED) 204 is connected to bus 108, and sends various display parameter to driven unit 202 from definite value.In step S240, driven unit 202 writes these display parameter in the register 102 from definite value according to the command action of external device (ED) 204, overrides display parameter preset value set among the step S220.Get back to step S250 at last, time schedule controller 200 from definite value, by the control of row driver 112 and line driver 112, is enabled display panel 116 according to these display parameter, with the data Data_In that receives, converts the output picture to.In addition, on connecting after the external device (ED) 204, one default be that the switch 206 that turn-offs can be sent to the control command of driven unit 202 and connects along with external device (ED) 204, make the bus in the middle of storer 106 and the external device (ED) 204 form path, therefore this external device (ED) 204 is able to the data in the access memory 106, does further and uses.
Fig. 3 is the electronic product structural drawing of one of embodiment of the invention, except the element that comprises flat-panel screens of the present invention, also comprises a power management module 118 in the electronic product 300.This power management module 118 can also be accepted the control of this time schedule controller 200 except providing power supply to the inner related elements, the voltage and the electric current of required according to circumstances adjustment output.Yet the example of electronic product is not limited to this, for example palmtop computer, mobile phone or other, but each self-contained other associated electronic components or module are not given unnecessary details at this.
In sum, the invention provides the external transmission interface of a LCD adjustment special use, can change the value of display parameter and storer by external dynamic.In addition, by the setting of display parameter from definite value, also can requiredly according to circumstances close down specific function in the time schedule controller, quality and the cost loss of having avoided the image re-treatment to cause have strengthened the function elasticity of LCD MODULE.
Though the present invention with preferred embodiment openly as above; so it is not in order to limit scope of the present invention; any those skilled in the art; under the situation that does not break away from the spirit and scope of the present invention; can carry out various changes and modification, so protection scope of the present invention is as the criterion with the claim limited range that is proposed.
Claims (10)
1. time schedule controller comprises:
One register, required display parameter when storing a flat-panel screens display frame;
One bus, the display parameter of being imported by an external device (ED) in order to transmission are from definite value;
One main control unit is connected to this bus and this register, in order to this flat-panel screens the unloading phase one preset value write this register, as these required display parameter of display frame; And
One driven unit is connected to this bus and this register, in order to receiving these display parameter from definite value by this bus, and writes this register as these required display parameter of display frame.
2. time schedule controller as claimed in claim 1 further comprises a storer, is connected to this bus, in order to store the preset value of these display parameter.
3. time schedule controller as claimed in claim 2, wherein this storer be electro-erasable programmable ROM (read-only memory), flash Erasable Programmable Read Only Memory EPROM one of them.
4. time schedule controller as claimed in claim 2 further comprises a switch, is connected to this storer and this bus, and connects according to the startup command of this external device (ED), so that this external device (ED) is able to this storer of access.
5. time schedule controller as claimed in claim 1, wherein this bus is a System Management Bus, IC data bus or serial peripheral interface one of them.
6. electronic product comprises:
One flat-panel screens comprises a time schedule controller and a display panel; And
One power management module is connected to this flat-panel screens, in order to this electronic product and the required power supply of this flat-panel screens to be provided;
This time schedule controller wherein comprises:
One register, required display parameter when storing this flat-panel screens display frame;
One bus is in order to transmit this display parameter;
One main control unit is connected to this bus and this register, in order to this flat-panel screens the unloading phase one preset value write this register, as these required display parameter of display frame; And
One driven unit is connected to this bus and this register, in order to receiving display parameter from definite value by this bus, and writes this register as these required display parameter of display frame.
7. electronic product as claimed in claim 6, this power management module power supply controlling signal of further receiving this time schedule controller and being transmitted wherein is to adjust the voltage and the electric current of output.
8. electronic product as claimed in claim 6 further comprises a storer, is connected to this bus, in order to store the preset value of these display parameter.
9. electronic product as claimed in claim 6, wherein:
This bus can be used for connecting an external device (ED); And
When this external device (ED) with display parameter when definite value is sent to this driven unit, this driven unit writes this register with these display parameter from definite value, replaces the corresponding preset value.
10. electronic product as claimed in claim 9 further comprises a switch, is controlled by this driven unit, is connected on this bus, controls being connected between this storer and this external device (ED);
Wherein work as this driven unit and receive the startup command that this external device (ED) sends, then this switch connection makes this external device (ED) be able to this storer of access.
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| Application Number | Priority Date | Filing Date | Title |
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| CNB2004100786472A CN100399402C (en) | 2004-09-14 | 2004-09-14 | Time sequence controller with external transmission interface and electronic product using said controller |
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| CNB2004100786472A CN100399402C (en) | 2004-09-14 | 2004-09-14 | Time sequence controller with external transmission interface and electronic product using said controller |
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| CN1588527A CN1588527A (en) | 2005-03-02 |
| CN100399402C true CN100399402C (en) | 2008-07-02 |
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| CNB2004100786472A Active CN100399402C (en) | 2004-09-14 | 2004-09-14 | Time sequence controller with external transmission interface and electronic product using said controller |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100461257C (en) * | 2006-12-06 | 2009-02-11 | 友达光电股份有限公司 | Time sequence controller and liquid crystal display device including the same time sequence controller |
| TWI566229B (en) * | 2015-06-03 | 2017-01-11 | 友達光電股份有限公司 | Timing controller of display device and a method thereof |
| CN106652931B (en) * | 2016-11-03 | 2019-05-07 | 深圳市华星光电技术有限公司 | Display driver circuit, drive control method, voltage supply chip and display equipment |
| CN109920388B (en) * | 2019-04-11 | 2021-01-15 | 深圳市华星光电技术有限公司 | Display panel driving system |
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| JPS647148A (en) * | 1987-06-30 | 1989-01-11 | Matsushita Electric Ind Co Ltd | Processor |
| US5515074A (en) * | 1993-12-27 | 1996-05-07 | Alps Electric Co., Ltd. | Density control method and device in display device |
| CN2482145Y (en) * | 2001-06-19 | 2002-03-13 | 华南师范大学 | Remote input device of intelligent instrument collecting and distributing system |
| CN1366657A (en) * | 2000-04-14 | 2002-08-28 | 皇家菲利浦电子有限公司 | Display driver with double calibration means |
| CN1444194A (en) * | 2002-03-07 | 2003-09-24 | 精工爱普生株式会社 | Display drive, electrooptical device and parameter setting method of display drive |
| TW594659B (en) * | 2002-10-02 | 2004-06-21 | Explore Microelectronics Inc | Display device with de-interlaced mode |
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2004
- 2004-09-14 CN CNB2004100786472A patent/CN100399402C/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS647148A (en) * | 1987-06-30 | 1989-01-11 | Matsushita Electric Ind Co Ltd | Processor |
| US5515074A (en) * | 1993-12-27 | 1996-05-07 | Alps Electric Co., Ltd. | Density control method and device in display device |
| CN1366657A (en) * | 2000-04-14 | 2002-08-28 | 皇家菲利浦电子有限公司 | Display driver with double calibration means |
| CN2482145Y (en) * | 2001-06-19 | 2002-03-13 | 华南师范大学 | Remote input device of intelligent instrument collecting and distributing system |
| CN1444194A (en) * | 2002-03-07 | 2003-09-24 | 精工爱普生株式会社 | Display drive, electrooptical device and parameter setting method of display drive |
| TW594659B (en) * | 2002-10-02 | 2004-06-21 | Explore Microelectronics Inc | Display device with de-interlaced mode |
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| CN1588527A (en) | 2005-03-02 |
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