Time sequence control method of two-stage V-BY-ONE signal system

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 [0001] The invention relates to the technical field of television signal processing, in particular to a timing control method of a two-stage V-BY-ONE signal system. Background technique [0002] V-BY-ONE (referred to as VBO) is a digital interface standard technology for image information transmission. VBO technology is widely used in the field of LCD TVs. VBO signal transmission requires two control pins for hot plug detection and clock lock. Both are set to high level, when the receiving end is activated, the hot plug detection is pulled low, and then CDR training (data clock recovery), after CDR training is successful, the clock lock is pulled low, and then ALN ​​training (data format Calibration), and finally transmit valid image information. figure 2 Briefly explain the communication flow of VBO sender and receiver. [0003] The successful communication between the VBO sending end and the receiving end requires strict timing control as the premise. At ...

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Problems solved by technology

[0003] The successful communication between the VBO sending end and the receiving end requires strict timing control as the premise. At present, most LCD TVs consist of a main board and an LCD screen to form a VBO sending and receiving system. However, in order to improve the display effect of LCD TVs, an image enhancement module is often added. At present , the TV industry has no basis for the timing control of the complex VBO system composed of the TV main board, the image enhancement module and the LCD screen. show

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