Portable multimedia playback device, particularly digital television, has processing module is connected with position information receiver module, receiver module and memory module storing multiple potential channel cards

摘要

The playback device (10) has a memory module (34) provided for storing multiple potential channel cards and a frequency local value table (38). A processing module (40) is connected with a position information receiver module (32), a receiving module (14) and the memory module. The position information module is activated by the processing module, if the signal strength of wireless signal is lower than the given limit value, for receiving the local information. One of the potential channel cards is determined as present channel card, according to the local information and the table. An independent claim is included for a method for controlling a portable multimedia playback device, in accordance with the local information.