Patent ID: 7650439
Filing Date: 2010-01-19
Classification: G06F

Abstract:
1. A falling protective device for protecting a hard disk of a falling portable computer including a central processing unit (CPU), a system basic input/output system (BIOS), and a keyboard controller, the falling protective device comprising: a falling sensor arranged in the portable computer for detecting a falling state of the portable computer and generating an interrupt signal in response to the detected falling state, and the generated interrupt signal being sent to the keyboard controller via a signal line; and an SMI (system management interrupt) signal line extended between and connected to the keyboard controller and the system BIOS; whereby the keyboard controller and system BIOS are configured such that when the keyboard controller receives the interrupt signal generated by the falling sensor, the keyboard controller sends an SMI signal to the system BIOS via the SMI signal line, and the system BIOS in turn sends a park control signal to the hard disk so as to forbid access of data on the hard disk and a HD power-off control signal to the hard disk to terminate the power supply to the hard disk, and after a preset time period has lapsed after the falling sensor has stopped sending the interrupt signal to the keyboard controller, the system BIOS restores normal data access to the hard disk.