Abstract: An information handling system may include a processor, one or more audio speakers configured to play back audible audio signals, and a basic input/output system (BIOS) comprising a program of instructions comprising boot firmware configured to be the first code executed by the processor when the information handling system is booted or powered on in order to initialize the information handling system for operation. The BIOS may be further configured to monitor for an error occurring during execution of the BIOS and responsive to an error occurring during execution of the BIOS, cause the one or more audio speakers to play back a sequence of one or more multi-frequency audio signals encoding an identity of the error.

Abstract: A digital-pointer interaction system is provided, which includes a display apparatus, a host, a wireless receiving device, and a plurality of wireless pointer devices. The host plays a display screen on the display apparatus, and executes a digital-pointer application. The digital-pointer application renders a plurality of pointer cursors on the display screen according to a number of wireless pointer devices connected to the wireless receiving device, and each wireless pointer device corresponds to each pointer cursor. Each wireless pointer device periodically emits an indication signal to the wireless receiving device, and the wireless receiving device transmits the indication signal to the host. The indication signal includes displacement information of each wireless pointer device. The digital-pointer application controls movement of each pointer cursor on the display screen according to the displacement information of each wireless pointer device.

Abstract: A digital-pointer interaction system is provided, which includes a display apparatus, a host, a wireless receiving device, and a plurality of wireless pointer devices. The host plays a display screen on the display apparatus, and executes a digital-pointer application. The digital-pointer application renders a plurality of pointer cursors on the display screen according to a number of wireless pointer devices connected to the wireless receiving device, and each wireless pointer device corresponds to each pointer cursor. Each wireless pointer device periodically emits an indication signal to the wireless receiving device, and the wireless receiving device transmits the indication signal to the host. The indication signal includes displacement information of each wireless pointer device. The digital-pointer application controls movement of each pointer cursor on the display screen according to the displacement information of each wireless pointer device.

Abstract: A device matching verification method is provided. The device matching verification method includes reading, respectively, first color code information stored in a cradle device and second color code information stored in a memory device of an electronic device; transforming the first color code information to display a first color code on a first display region of a display device of the electronic device; transforming the second color code information to display a second color code on a second display region of the display device; and determining whether the cradle device matches the electronic device or not according to the first color code and the second color code.

Abstract: An operating system switching method for use in an electronic device is provided. The method includes the steps of: determining whether the first operating system receives an operating system switching command at time t1; storing first status data to a volatile memory and a non-volatile memory when a first operating system enters a non-operating state from an operating state based on the operating system switching command; writing second status data stored in the non-volatile memory to the volatile memory; and controlling the second operating system to enter the operating state from the non-operating state and recover to the operating status at time t2 based on the second status data stored in the volatile memory, wherein time t2 is earlier than time t1.