CN104683714A - Time sequence control method of two-stage V-BY-ONE signal system - Google Patents
Time sequence control method of two-stage V-BY-ONE signal system Download PDFInfo
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- CN104683714A CN104683714A CN201510059528.0A CN201510059528A CN104683714A CN 104683714 A CN104683714 A CN 104683714A CN 201510059528 A CN201510059528 A CN 201510059528A CN 104683714 A CN104683714 A CN 104683714A
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Abstract
The embodiment of the invention discloses a time sequence control method of a V-BY-ONE system. The time sequence control method comprises the following steps of 1, dividing the V-BY-ONE signal system into a first stage of VBO (V-BY-ONE) system and a second stage of VBO system; 2, controlling to electrify an SOC (system on chip) module and an image enhancement module by a standby module in a television motherboard; 3, after a first time t1, when the state of the system is stable, sending a first stage of VBO signal by the television motherboard; 4, locking the first stage of VBO signal by the image enhancement module after a second time t2, and when the transmission state of the first stage of VBO signal is stable, controlling to electrify a timer control (TCON) panel of a liquid crystal display screen by the SOC module; 5, after a third time t3, when the state of the TCON panel of the liquid crystal display screen is stable, sending a second stage of VBO signal by the image enhancement module, locking the second stage of VBO signal by the TCON panel of the liquid crystal display screen, and finally displaying an image by the liquid crystal display screen. The time sequence control method has the beneficial effects that abnormal phenomena of screen self-inspection, screen fuzziness and the like appearing due to a disordered start time sequence can be effectively avoided, the flow normalization of the VBO signals is guaranteed, and the display reliability of the system is promoted.
Description
Technical field
The present invention relates to television signal processing technology field, be specifically related to a kind of sequential control method of two-stage V-BY-ONE signal system.
Background technology
V-BY-ONE (being called for short VBO), it is the Digital Interface Standard technology of a kind of image information transmission, VBO technology is widely used in LCD TV field, VBO Signal transmissions needs to use hot plug detection and clock lock two control pin, all be set to high level, when receiving terminal is activated, hot plug detects and is dragged down, then CDR training (data clock recovery) is carried out, after CDR training success, clock lock is dragged down, and then carries out ALN training (data format calibration), finally transmits effective image information.Fig. 2 schematically illustrates the communication process of VBO transmitting terminal and receiving terminal.
The success communication of VBO transmitting terminal and receiving terminal needs premised on strict sequencing control, current most LCD TV forms VBO by mainboard and liquid crystal display screen and sends and receiving system, but in order to the display effect improving LCD TV often all will increase an image enhancement module, at present, TV industry controls also can comply with without certificate for the complicated VBO system sequence having TV SKD, image enhancement module and liquid crystal display screen three to form, the confusion of sequential between them, the result brought is exactly the abnormal show such as aobvious screen self-inspection, Hua Ping.
Summary of the invention
The anomaly such as screen self-inspection, Hua Ping that the present invention brings in order to avoid the VBO signal system sequential confusion formed due to TV SKD, image enhancement module and liquid crystal display screen three, provides a kind of sequential control method of two-stage V-BY-ONE signal system.
For achieving the above object, the present invention is by the following technical solutions:
A sequential control method for V-BY-ONE system, it comprises:
Step 1, the V-BY-ONE system divides be made up of TV SKD, image enhancement module and liquid crystal display screen TCON plate is become the first order VBO system be made up of TV SKD and image enhancement module and the second level VBO system be made up of image enhancement module and liquid crystal display screen TCON plate, control the sequential of first order VBO system and second level VBO system successively;
Step 2, to be powered on to SOC module and image enhancement module by the standby module controls in TV SKD;
Step 3, through very first time t
1after, when system mode is stablized, send first order VBO signal by TV SKD;
Step 4, through the second time t
2rear image enhancement module locking first order VBO signal, first order VBO transmission state signal is stablized, and is powered on to liquid crystal display screen TCON plate by SOC module controls;
Step 5, through the 3rd time t
3after, when liquid crystal display screen TCON board status is stablized, image enhancement module sends second level VBO signal, and liquid crystal display screen TCON plate locking second level VBO signal, shows image finally by liquid crystal display screen.
Further technical scheme is, described very first time t
1comprise the 4th time t
11with the first design margin time t
12, described 4th time t
11for TV SKD power-up initializing time or image enhancement module power-up initializing time.
Further technical scheme is, described second time t
2comprise the 5th time t
21with the second design margin time t
22, described 5th time t
21for CDR training and the ALN training time of first order VBO signal.
Further technical scheme is, described 3rd time t
3comprise t between liquid crystal display screen TCON plate power-up initializing
31with the 3rd design margin time t
32.
Compared with prior art, the invention has the beneficial effects as follows:
The present invention can control in order to the two-stage VBO system sequence of TV SKD, image enhancement module, liquid crystal display screen TCON plate composition, effectively avoids because the anomalies such as screen self-inspection, Hua Ping appear in start sequential confusion.Ensure that the normalization of VBO signal flow, improve the reliability of system display.
Accompanying drawing explanation
Fig. 1 is the sequential chart of a kind of V-BY-ONE signal system of the embodiment of the present invention.
Fig. 2 is VBO signal communication flow diagram in prior art.
In figure, corresponding Reference numeral name is called:
VDD
_ 1 TV SKD voltage, VDD
_ 2 image enhancement module voltages, VBO_1 first order VBO signal, VDD_TCON liquid crystal display screen TCON plate voltage, VBO_2 second level VBO signal.
Embodiment
A sequential control method for V-BY-ONE system, it comprises:
Step 1, the V-BY-ONE system divides be made up of TV SKD, image enhancement module and liquid crystal display screen TCON plate is become the first order VBO system be made up of TV SKD and image enhancement module and the second level VBO system be made up of image enhancement module and liquid crystal display screen TCON plate, control the sequential of first order VBO system and second level VBO system successively;
Step 2, to be powered on to SOC module and image enhancement module by the standby module controls in TV SKD;
Step 3, through very first time t
1after, when system mode is stablized, send first order VBO signal by TV SKD;
Step 4, through the second time t
2rear image enhancement module locking first order VBO signal, first order VBO transmission state signal is stablized, and is powered on to liquid crystal display screen TCON plate by SOC module controls;
Step 5, through the 3rd time t
3after, when liquid crystal display screen TCON board status is stablized, image enhancement module sends second level VBO signal, and liquid crystal display screen TCON plate locking second level VBO signal, shows image finally by liquid crystal display screen.
According to one embodiment of present invention, described very first time t
1comprise the 4th time t
11with the first design margin time t
12, described 4th time t
11for TV SKD power-up initializing time or image enhancement module power-up initializing time, described second time t
2comprise the 5th time t
21with the second design margin time t
22, described 5th time t
21for CDR training and the ALN training time of first order VBO signal, described t
21only by CDR training and the ALN training Time dependent of first order VBO.Described 3rd time t
3comprise liquid crystal display screen TCON plate power-up initializing time t
31with the 3rd design margin time t
32.
Described very first time t
1comprise the 4th time t
11with the first design margin time t
12, described 4th time t
11for TV SKD power-up initializing time or image enhancement module power-up initializing time, t
11being determined by TV SKD and image enhancement module initialization time longer one, the characteristic parameter (such as, resetting time, I/O port level state, software register value) should testing them in practical application obtains; For ensureing to shorten the available machine time, the first design margin time t as far as possible
12unsuitable long, should with t
11be in the same time order of magnitude and be less than t
11.
Described second time t
2comprise the 5th time t
21with the second design margin time t
22, described 5th time t
21for CDR training and the ALN training time of first order VBO signal, repeatedly VBO signal could be locked owing to may need to carry out training process, so in the application of reality, different System's composition causes the sample different in size of training process, so the 5th time t
21need whether test HTPDN and LOCKN is that low level is determined.For ensureing to shorten the available machine time, the second design margin time t as far as possible
22unsuitable long, should with t
21be in the same time order of magnitude and be generally less than t
21.
Described 3rd time t
3comprise liquid crystal display screen TCON plate power-up initializing time t
31with the 3rd design margin time t
32, t
31length determined by liquid crystal display screen TCON plate itself, in practical application, general screen specifications can provide reference value, or test liquid crystal display screen TCON plate relevant parameter is determined.As far as possible short for ensureing the available machine time, design the 3rd design margin time t
32unsuitable long should with t
31the same time order of magnitude should be in and be generally less than t
31.
A sequential chart for V-BY-ONE signal system as shown in Figure 1, as follows:
(1) the standby module controls of TV SKD opens TV SKD voltage VDD_1 and image enhancement module voltage VDD_2.
(2) time delay t
1after, TV SKD exports first order VBO signal VBO_1.
(3) time delay t
2after, TV SKD opens liquid crystal display screen TCON plate voltage VDD_TCON.
(4) time delay t
3after, image enhancement module provides second level VBO signal VBO_2, and then liquid crystal display screen TCON plate starts VBO semaphore lock.
Finally, image correctly shows by liquid crystal display screen.
Above embodiment is described in detail to essence of the present invention; but can not limit protection scope of the present invention; apparently; under enlightenment of the present invention; the art those of ordinary skill can also carry out many improvement and modification; it should be noted that these improve and modify all to drop within claims of the present invention.
Claims (4)
1. a sequential control method for two-stage V-BY-ONE signal system, is characterized in that, it comprises:
Step 1, the V-BY-ONE system divides be made up of TV SKD, image enhancement module and liquid crystal display screen TCON plate is become the first order VBO system be made up of TV SKD and image enhancement module and the second level VBO system be made up of image enhancement module and liquid crystal display screen TCON plate, control the sequential of first order VBO system and second level VBO system successively;
Step 2, to be powered on to SOC module and image enhancement module by the standby module controls in TV SKD;
Step 3, through very first time t
1after, when electric system is in stable condition, send first order VBO signal by TV SKD;
Step 4, through the second time t
2rear image enhancement module locking first order VBO signal, first order VBO transmission state signal is stablized, and is powered on to liquid crystal display screen TCON plate by SOC module controls;
Step 5, through the 3rd time t
3after, when liquid crystal display screen TCON board status is stablized, image enhancement module sends second level VBO signal, and liquid crystal display screen TCON plate locking second level VBO signal, shows image finally by liquid crystal display screen.
2. the sequential control method of two-stage V-BY-ONE signal system according to claim 1, it is characterized in that described very first time t
1comprise the 4th time t
11with the first design margin time t
12, described 4th time t
11for TV SKD power-up initializing time or image enhancement module power-up initializing time.
3. the sequential control method of two-stage V-BY-ONE signal system according to claim 1, it is characterized in that described second time t
2comprise the 5th time t
21with the second design margin time t
22, described 5th time t
21for CDR training and the ALN training time of first order VBO signal.
4. the sequential control method of two-stage V-BY-ONE signal system according to claim 1, it is characterized in that described 3rd time t
3comprise liquid crystal display screen TCON plate power-up initializing time t
31with the 3rd design margin time t
32.
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| CN104683714B CN104683714B (en) | 2017-06-23 |
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| CN105931593A (en) * | 2016-06-30 | 2016-09-07 | 深圳市华星光电技术有限公司 | Display apparatus with VBO multi-receiving end circuit structure |
| CN106507013A (en) * | 2016-10-26 | 2017-03-15 | 青岛海信电器股份有限公司 | The control method of VBO signal transmissions, device and display terminal |
| CN107071568A (en) * | 2017-04-10 | 2017-08-18 | 青岛海信电器股份有限公司 | Transmitter and condition control method |
| CN108269543A (en) * | 2018-01-17 | 2018-07-10 | 深圳市华星光电技术有限公司 | Sequence controller and display panel |
| CN109410861A (en) * | 2018-11-23 | 2019-03-01 | 惠科股份有限公司 | Driver and display device |
| CN110459188A (en) * | 2019-08-16 | 2019-11-15 | 四川长虹电器股份有限公司 | The processing method of LCD TV TCON timing control signal |
| CN111107410A (en) * | 2019-12-30 | 2020-05-05 | Tcl华星光电技术有限公司 | VBO signal processing method and device for saving hardware resources and terminal |
| CN113691786A (en) * | 2020-05-18 | 2021-11-23 | 青岛海信激光显示股份有限公司 | Laser projection system and starting method thereof |
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| CN111107410A (en) * | 2019-12-30 | 2020-05-05 | Tcl华星光电技术有限公司 | VBO signal processing method and device for saving hardware resources and terminal |
| CN111107410B (en) * | 2019-12-30 | 2021-05-07 | Tcl华星光电技术有限公司 | VBO signal processing method and device for saving hardware resources and terminal |
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