Abstract: A video synchronous playback system and a method and a terminal device for video synchronous playback are provided. The method includes: outputting a video by a first communication interface, wherein the video has a first playback configuration; in response to at least one of receiving a control command generated by a first playback configuration control area being operated and an expiration of a counter, outputting a first playback signal corresponding to the first playback configuration through the first communication interface by a first processor; and receiving the first playback signal and outputting the video by a second terminal device.

Abstract: An erasing method for a non-volatile memory is provided. The method includes the following two major steps. (a) A first voltage is applied to the odd-numbered select gates of each memory row and a second voltage is applied to the even-numbered select gates of each memory row such that the voltage difference between the first voltage and the second voltage is large enough for the electrons injected into the floating gate of the memory cells to be removed via the select gate. (b) A switchover operation is performed so that the first voltage is applied to the even-numbered select gates of each memory row and the second voltage is applied to the odd-numbered select gates of each memory row such that the electrons injected into the floating gates of the memory cells are pulled away via the select gates to turn the memory cells into an erased state.

Abstract: An erasing method for a non-volatile memory is provided. The method includes the following two major steps. (a) A first voltage is applied to the odd-numbered select gates of each memory row and a second voltage is applied to the even-numbered select gates of each memory row such that the voltage difference between the first voltage and the second voltage is large enough for the electrons injected into the floating gate of the memory cells to be removed via the select gate. (b) A switchover operation is performed so that the first voltage is applied to the even-numbered select gates of each memory row and the second voltage is applied to the odd-numbered select gates of each memory row such that the electrons injected into the floating gates of the memory cells are pulled away via the select gates to turn the memory cells into an erased state.