Patent ID: 7988048
Filing Date: 2011-08-02
Classification: G06K

Abstract:
1. A control chip of a card reader, wherein one or more pins of the control chip are shared between a plurality of memory card read/write interfaces, comprising: a first detection pin coupled to a first pin of a first memory card read/write interface, the first detection pin being configured to have an end that extends further than ends of remaining pins, so that the first detection pin is the first to contact a memory card in the first memory card read/write interface; and a second detection in coupled to a second in of a second memory card read/write interface, the second in being the last to contact a memory card in the second memory card read/write interface; wherein, the second detection in of the control chip is used to detect if any memory card is pulled out from the second memory card read/write interface; wherein, the first detection pin of the control chip is used to detect if any memory card is inserted into the first memory card read/write interface.