Abstract: A driving method of a display device comprises the following steps. A period to turn off a backlight module is set. An overdrive voltage is applied, and an overdrive time required for a liquid crystal to change from a first target gray scale to a second target gray scale is obtained. A turn-off time point for turning off the backlight module is adjusted so that at least a part of the period when the backlight module is turned off overlaps the overdrive time.

Abstract: A wireless charging guide system includes a wireless charging cradle, an electronic device and a visual guide medium. The electronic device includes a power storage unit and a charging unit. When the visual guide medium guides the electronic device to be placed at a first position on the top surface of the wireless charging cradle, the charging unit, with respect to the wireless charging cradle, has a charging rate larger than a first default value and starts to charge the power storage unit, wherein the visual guide medium is accessed from a remote server according to the model of the electronic device.

Abstract: A wireless charging guide system includes a wireless charging cradle, an electronic device and a visual guide medium. The electronic device includes a power storage unit and a charging unit. When the visual guide medium guides the electronic device to be placed at a first position on the top surface of the wireless charging cradle, the charging unit, with respect to the wireless charging cradle, has a charging rate larger than a first default value and starts to charge the power storage unit, wherein the visual guide medium is accessed from a remote server according to the model of the electronic device.

Abstract: An operating system updating method includes linking a device to a server for checking whether a second operating system is on the server; downloading a checklist to the device if the second operating system is on the server; checking whether a current recovery image file conforms to the checklist; replacing the current recovery image file with a backup recovery image file if the current recovery image file fails to conform to the checklist; checking whether a set of system data files of the device conforms to the checklist; downloading a full updating package of files corresponding to the second operating system to the device from the server if the set of system data files fails to conform to the checklist; and installing the second operating system on the device for replacing the first operating system by using the backup recovery image file and the full updating package of files.