| 摘要 |
The present invention centralizes the processing the combined horizontal and vertical sync signals in a master device and thereby keeps the interface devices as simple as possible so as to reduce the cost of the interface devices. The interface device mainly only converts the separate horizontal sync signal and vertical sync signal, or the combined horizontal and vertical sync signal to a default polarity. On the other hand, the separation of the combined horizontal and vertical sync signal into individual horizontal and vertical sync signals are all carried out by the master device.
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