Abstract: Disclosed is a network data playback system including a network circuit, a master device, and a slave device. The network circuit is configured to provide network resources for the master device and slave device and can be included in or independent of the master device. The master device is configured to select a Uniform Resource Locator (URL) and actively/passively inform the slave device of the URL. The slave device is configured to execute the following steps: if an estimated distance between the slave device and the network circuit is shorter than a threshold, obtaining data (e.g., multimedia data) related to the URL through the network circuit and then processing the data; and if the estimated distance is longer than the threshold, searching for and/or choosing another network circuit to try to continue processing the data related to the URL through the another network circuit.

Abstract: Disclosed is a playback system including a master device and slave devices. The master device executes the following steps: selecting data for playback; obtaining the position information of the slave devices through a wireless positioning technique; ascertaining a distribution pattern according to the position information; comparing the distribution pattern with at least a part of the patterns of multiple predetermined modes and thereby selecting one from the predetermined modes as a playback mode; and determining the playback parameters of the slave devices according to the position information and the playback mode, or notifying the slave devices of their playback roles based on the playback mode and the position information to let the slave devices determine their own playback parameters. Each slave device includes a wireless communication circuit available to the wireless positioning technique, and the slave devices play synchronously according to the master device's control.

Abstract: Disclosed is a network data playback system including a network circuit, a master device, and a slave device. The network circuit is configured to provide network resources for the master device and slave device and can be included in or independent of the master device. The master device is configured to select a Uniform Resource Locator (URL) and actively/passively inform the slave device of the URL. The slave device is configured to execute the following steps: if an estimated distance between the slave device and the network circuit is shorter than a threshold, obtaining data (e.g., multimedia data) related to the URL through the network circuit and then processing the data; and if the estimated distance is longer than the threshold, searching for and/or choosing another network circuit to try to continue processing the data related to the URL through the another network circuit.

Abstract: Disclosed is a playback system including a master device and slave devices. The master device executes the following steps: selecting data for playback; obtaining the position information of the slave devices through a wireless positioning technique; ascertaining a distribution pattern according to the position information; comparing the distribution pattern with at least a part of the patterns of multiple predetermined modes and thereby selecting one from the predetermined modes as a playback mode; and determining the playback parameters of the slave devices according to the position information and the playback mode, or notifying the slave devices of their playback roles based on the playback mode and the position information to let the slave devices determine their own playback parameters. Each slave device includes a wireless communication circuit available to the wireless positioning technique, and the slave devices play synchronously according to the master device's control.

Abstract: A multimedia stream displaying method is disclosed. The method includes the following steps: firstly, a portable decoder unit is embedded between an application layer and a hardware layer. Then, a specific stream format of the hardware layer is inquired. A plurality of multimedia streams from the application layer are received and decoded, and the decoded multimedia streams are encapsulated in the specific stream format. Finally, the encapsulated multimedia streams are transmitted to the hardware layer to be displayed.