Timing control device and method and display device

Abstract

The invention discloses a timing control device and method and a display device. The timing control device comprises a clock module which is used for generating a clock signal, an interface module which is used for generating a hot plug detection signal, a counting module which is used for calculating the periodicity of the clock signal and continuously outputs a low-level signal when the periodicity reaches a predetermined periodicity, and a delay shaping module which is used for sampling the hot plug detection signal when the low-level signal is received, and outputting the sampled hot plug detection signal. The timing control device can carry out delay shaping on the hot plug detection signal to improve the anti-interference ability of the hot plug detection signal. The hot plug detection signal is in normal timing, which prevents a display from the phenomenon of abnormal black screen.

Description

technical field [0001] Embodiments of the present invention relate to a signal control technology, and more particularly, to a timing control apparatus, method, and display apparatus. Background technique [0002] A hot plug detection (Hot Plug Detect, HPD) signal is a detection signal output from the display and sent to the computer host. The host responds to the connection status with the display according to the hot-plug detection signal. [0003] In the prior art, when the host side receives a high-level hot-plug detection signal, it is connected to the display by default, and the host transmits image data to the display. At present, the timing controller TCON in the display system does not do any special processing for the hot-plug detection signal. Due to the process of the timing controller TCON or the timing of the timing controller TCON, the hot-plug detection signal may be disturbed. When the device TCON has not read the complete scan mode data from the electrica...

AI Technical Summary

Problems solved by technology

At present, the timing controller TCON in the display system does not do any special processing for the hot-plug detection signal. Due to the manufacturing process of the timing controller TCON or the timing of the timing controller TCON, the hot-plug detection signal may be interfered. When the device TCON has not read the complete scan mode data from the electrically erasable read-only memory EEPROM, it has changed to a high level. It has been connected and started to transmit image data. However, the timing controller TCON has not read the complete scan mode data at this time, and cannot correctly control the display to display images, resulting in a black screen phenomenon.

In addition, the sudden increase in the voltage of the hot plug detection signal is likely to cause some electrical components to be broken down

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