CN101034521A - Method for updating image frame parameter - Google Patents
Method for updating image frame parameter Download PDFInfo
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- CN101034521A CN101034521A CN 200710073819 CN200710073819A CN101034521A CN 101034521 A CN101034521 A CN 101034521A CN 200710073819 CN200710073819 CN 200710073819 CN 200710073819 A CN200710073819 A CN 200710073819A CN 101034521 A CN101034521 A CN 101034521A
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Abstract
The invention is suitable for the digital picture processing technology area, supplies a method of renewing picture frame parameter, the picture frame parameter renewal method includes the following steps: After the picture frame parameter renewal prepares completely, picture frame parameter renewal to enable the signal set as effective; When receives the picture frame parameter promotion order, renewal picture frame parameter. In this invention implementation example, through the introduction picture frame parameter renewal to trigger carries on the picture frame parameter cut renewal control, thus enables this invention to be prompt, accurately, reliable achieves the successful renewal picture frame parameter; At the same time, avoided the picture frame parameter renewal preparation process not completing, but caused the picture frame parameter to renew the incomplete situation.
Description
Technical field
The invention belongs to the digital image processing techniques field, relate in particular to a kind of method of updating image frame parameter.
Background technology
Along with the continuous maturation and the development of mobile multimedia technology, also obtained using more widely as the LCD (LiquidCrystal Display, LCD) of main display unit.The LCD interface one of main flow has two kinds, MPU (Micro Processer Unit, microprocessor) interface and RGB (RedGreen Blue, RGB) interface at present.Fig. 1 shows the syndeton of lcd controller and LCD chip for driving in the prior art, wherein, lcd controller is used for giving an order with the form of data, and the LCD chip for driving is used to receive the order data of lcd controller and carries out this order, the action of control LCD display panel.The LCD chip for driving of MPU interface because there is the buffer memory that can deposit a frame image data inside, therefore, after having refreshed frame data, has sufficient time to upgrade the correlation parameter of next frame.
And,, therefore require controller refresh frame parameter continuously because inner neither one can be deposited the buffer memory of frame image data for the chip for driving of rgb interface, and so, can be just very of short duration for the time window that is used for upgrading frame parameter.Fig. 2 shows the process of prior art parameter update: after each picture frame begins to refresh, then begin new set of diagrams picture frame parameter update and prepare; After image frame parameter upgrading order is assigned, then begin the new image frame parameter update.
Fig. 3 shows the renewal process that the preparation of prior art parameter update is not finished.Because renewal setup time of parameter is uncertain, may be subjected to the influence of several factors, therefore might work as the parameter upgrading order assign after, the renewal set-up procedure of parameter is not still finished, and that is to say, some new parameter is not written in the register of appointment and latchs, this moment is in case upgrade, so just can only upgrade a part of parameter, make and just used incomplete set of parameter in the refresh process of next frame, all mistakes that can not estimate will occur.
Summary of the invention
The purpose of the embodiment of the invention is to provide a kind of method of updating image frame parameter, is intended to solve untimely, accurate, the reliable problem of the updating image frame parameter that exists in the prior art.
The embodiment of the invention is achieved in that a kind of method of updating image frame parameter, said method comprising the steps of:
After updating image frame parameter is ready to complete, the updating image frame parameter enable signal is changed to effectively;
When receiving image frame parameter upgrading order, the update image frame parameter.
In the embodiment of the invention, trigger and carry out image frame parameter and switch and upgrade control by introducing the updating image frame parameter enable signal, thus make the present invention can be in time, accurately, accomplish successfully the update image frame parameter reliably; Simultaneously, avoided the updating image frame parameter set-up procedure not finish, and caused the incomplete situation of updating image frame parameter.
Description of drawings
Fig. 1 is the lcd controller that provides of prior art and the johning knot composition of chip for driving.
Fig. 2 is the parameter update synoptic diagram that prior art provides.
Fig. 3 is that the parameter update that provides of prior art is prepared the renewal synoptic diagram do not finished.
Fig. 4 is the updating image frame parameter synoptic diagram that the embodiment of the invention provides.
Fig. 5 is that the parameter update that provides of the embodiment of the invention is prepared the updating image frame parameter synoptic diagram do not finished.
Embodiment
In order to make purpose of the present invention, technical scheme and advantage clearer,, the present invention is further elaborated below in conjunction with drawings and Examples.Should be appreciated that specific embodiment described herein only in order to explanation the present invention, and be not used in qualification the present invention.
In the embodiment of the invention, trigger and carry out image frame parameter and switch and upgrade control by introducing the updating image frame parameter enable signal, thus make the present invention can be in time, accurately, accomplish successfully the update image frame parameter reliably.
In embodiments of the present invention, to latch in the complete register that is written to appointment of new set of diagrams picture frame parameter, in detecting the complete register that is written to appointment of new set of diagrams picture frame parameter (being after everything that updating image frame parameter is prepared is all finished), at this moment, the updating image frame parameter enable signal is changed to effectively.
Be that the updating image frame parameter enable signal is put height in the invention process, put high beautiful new set of diagrams picture frame parameter and latched in the complete register that is written to appointment.
When image frame parameter upgrading order is assigned, and the updating image frame parameter enable signal at this moment, triggers updating image frame parameter when being high.
Fig. 4 shows the process of the updating image frame parameter that the embodiment of the invention provides.In the embodiment of the invention, after each picture frame begins to refresh, then begin new set of diagrams picture frame parameter update and prepare; New set of diagrams picture frame parameter is written to by the register configuration bus in the related register of lcd controller and latchs; Be written in the register of appointment when new set of diagrams picture frame parameter is complete, at this moment, the updating image frame parameter enable signal is put height.Then, wait image frame parameter upgrading order is assigned.This image frame parameter upgrading order is directly sent by the internal storage access module, generally is to refresh the previous cycle at the new picture frame of beginning to send, and so just can not influence refreshing of current image frame.After register receives image frame parameter upgrading order, and when the updating image frame parameter enable signal of this moment is high, the set of diagrams picture frame parameter that will be latched in the register at next cycle is taken out at once, and upgrades related register, thereby finishes entire image frame parameter renewal process.
Be understandable that,, then do not need the update image frame parameter if the associated picture frame parameter of continuous several frames is identical.
In embodiments of the present invention, when image frame parameter upgrade fully finish after, the updating image frame parameter enable signal is cleared.
The process of the updating image frame parameter that the parameter update preparation that Fig. 5 shows the embodiment of the invention to be provided is not finished.As one embodiment of the present of invention, when the updating image frame parameter set-up procedure occurs when unusual, just refer to when image frame parameter upgrading order is assigned, still some new image frame parameter is not written in the register of appointment and latchs, at this moment, because detecting new set of diagrams picture frame parameter does not have in the complete register that is written to appointment, so the updating image frame parameter enable signal is not put height, therefore can not trigger and carry out updating image frame parameter, next frame still refreshes according to the image frame parameter of previous frame, and the high level of image frame parameter enable signal also can remain to the image frame parameter upgrading order of next frame when arriving always, and all images frame parameter just can be cleared after upgrading and finishing.
As from the foregoing, in the embodiment of the invention, trigger and carry out image frame parameter and switch and upgrade control by introducing the updating image frame parameter enable signal, thereby make the present invention can be in time, accurately, accomplish successfully the update image frame parameter reliably, simultaneously, avoid the updating image frame parameter set-up procedure not finish, and caused the incomplete situation of updating image frame parameter.
The above only is preferred embodiment of the present invention, not in order to restriction the present invention, all any modifications of being done within the spirit and principles in the present invention, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.
Claims (5)
1, a kind of method of updating image frame parameter is characterized in that, said method comprising the steps of:
After updating image frame parameter is ready to complete, the updating image frame parameter enable signal is changed to effectively;
When receiving image frame parameter upgrading order, the update image frame parameter.
2, the method for claim 1 is characterized in that, the step that described updating image frame parameter is prepared specifically comprises:
To latch in the complete register that is written to appointment of new set of diagrams picture frame parameter.
3, the method for claim 1 is characterized in that, puts when high when described updating image frame parameter enable signal, and described updating image frame parameter enable signal is effective.
4, the method for claim 1 is characterized in that, after updating image frame parameter finished, described method further comprised the steps:
With the zero clearing of described updating image frame parameter enable signal.
5, the method for claim 1 is characterized in that, prepares imperfect tense when updating image frame parameter, and described method further comprises:
Keep current image frame parameter update enable signal constant, refresh present frame by the image frame parameter of former frame.
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| Application Number | Priority Date | Filing Date | Title |
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| CNB2007100738190A CN100481165C (en) | 2007-04-05 | 2007-04-05 | Method for updating image frame parameter |
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| CNB2007100738190A CN100481165C (en) | 2007-04-05 | 2007-04-05 | Method for updating image frame parameter |
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| CN101034521A true CN101034521A (en) | 2007-09-12 |
| CN100481165C CN100481165C (en) | 2009-04-22 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101968728A (en) * | 2010-09-27 | 2011-02-09 | 广东威创视讯科技股份有限公司 | Processing method and device after acquiring vertical synchronization time during image update |
| CN102103823A (en) * | 2009-12-21 | 2011-06-22 | 兆宏电子股份有限公司 | Electronic paper device |
| CN102708839A (en) * | 2012-06-29 | 2012-10-03 | 广东威创视讯科技股份有限公司 | Method for synchronously displaying signals in batch on spliced wall |
| CN104375792A (en) * | 2014-10-14 | 2015-02-25 | 浙江宇视科技有限公司 | Layer changing synchronizing method |
| CN109473073A (en) * | 2018-12-03 | 2019-03-15 | 南京中电熊猫液晶显示科技有限公司 | A kind of display device and its driving method |
| CN111277858A (en) * | 2018-12-05 | 2020-06-12 | 西安诺瓦星云科技股份有限公司 | Video processing method and device, video processor and storage medium |
-
2007
- 2007-04-05 CN CNB2007100738190A patent/CN100481165C/en active Active
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102103823A (en) * | 2009-12-21 | 2011-06-22 | 兆宏电子股份有限公司 | Electronic paper device |
| CN101968728A (en) * | 2010-09-27 | 2011-02-09 | 广东威创视讯科技股份有限公司 | Processing method and device after acquiring vertical synchronization time during image update |
| CN101968728B (en) * | 2010-09-27 | 2012-06-06 | 广东威创视讯科技股份有限公司 | Processing method and device after acquiring vertical synchronization time during image update |
| CN102708839A (en) * | 2012-06-29 | 2012-10-03 | 广东威创视讯科技股份有限公司 | Method for synchronously displaying signals in batch on spliced wall |
| CN102708839B (en) * | 2012-06-29 | 2014-12-24 | 广东威创视讯科技股份有限公司 | Method for synchronously displaying signals in batch on spliced wall |
| CN104375792A (en) * | 2014-10-14 | 2015-02-25 | 浙江宇视科技有限公司 | Layer changing synchronizing method |
| CN104375792B (en) * | 2014-10-14 | 2017-11-03 | 浙江宇视科技有限公司 | A kind of synchronous method of figure layer change |
| CN109473073A (en) * | 2018-12-03 | 2019-03-15 | 南京中电熊猫液晶显示科技有限公司 | A kind of display device and its driving method |
| CN111277858A (en) * | 2018-12-05 | 2020-06-12 | 西安诺瓦星云科技股份有限公司 | Video processing method and device, video processor and storage medium |
| CN111277858B (en) * | 2018-12-05 | 2022-06-17 | 西安诺瓦星云科技股份有限公司 | Video processing method and device, video processor and storage medium |
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| CN100481165C (en) | 2009-04-22 |
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Owner name: ANKAI (GUANGZHOU) MICROELECTRONICS TECHNOLOGY CO., Free format text: FORMER OWNER: SHENZHEN ANKAI MICROELECTRONICS TECHNOLOGY CO., LTD. Effective date: 20100122 |
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