| 摘要 |
In an interface device between a connector and a digital serial bus, a control device for a display apparatus and an integrated circuit chip, the interface device includes a non-connection pin connecting circuit and a ground pin connecting circuit. The non-connection pin connecting circuit electrically connects a non-connection pin of a connector to a first line of a digital serial bus. The ground pin connecting circuit receives a control signal applied to the ground pin connecting circuit through a first ground pin of the connector. The ground pin connecting circuit controls electrical connection between a second ground pin of the connector and a second line of the digital serial bus in response to the control signal. Therefore, a structure of the interface device is simplified.
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