| 摘要 |
A display driving circuit is provided to effectively suppress a tearing effect on a sub panel of a display panel by receiving synchronous information for respective display panels through a host. A display driving circuit includes a first interface unit(410), a signal discriminating unit(440), a signal distribution unit(450), a driver logic unit(460), a second interface unit(420), and a synchronous information processor(430). The first interface unit receives a signal, which is transmitted by a host according to a first interface scheme. The signal discriminating unit determines whether the data in the signal is a first video signal or a second video signal. The signal distribution unit distributes the first video signal from the second video signal according to the discrimination result. The driver logic unit receives the first video signal and drives a display panel. The second interface unit transmits the second video signal to an external display device according to a second interface scheme. The synchronous information processor receives synchronous information from the external display device and provides the synchronous information to the host.
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