Remote-signal data acquisition method and device

A remote-signal data acquiring device, comprising a remote-signal data acquiring unit, a position-alternation determining module, a position-alternation indication signal generating unit, a triggering unit, a remote-signal data acquiring unit, a first storage unit, and a second storage unit, wherein the first storage unit includes a temporary storage unit and a permanent storage unit, wherein:

• the remote-signal data acquiring unit is configured for receiving remote-signal data from multiple channels and storing the received remote-signal data to a temporary storage space of a first predetermined storage space;
• the position-alternation determining module is configured for comparing the currently received remote-signal data of multiple channels with previously received remote signals stored in a permanent storage unit of the first predetermined storage space to determine whether the currently received remote-signal data generate position-alternation;
• if yes, implementing step c, if no, returning to step a;
• the position-alternation indication signal generating unit is configured for generating a position-alternation indicating signal if the currently received remote-signal data generate position-alternation;
• the triggering unit is configured for triggering a remote-signal comparing unit if the currently received remote-signal data do not generate position-alternation;
• the temporary storage unit is configured for storing the currently received remote-signal data of multiple-channels;
• the permanent storage unit is configured for storing the previously received remote-signal data of multiple channels and storing the currently received remote-signal data of multiple channels when there are not the remote-signal data stored therein;
• the remote-signal data acquiring unit is configured for acquiring the currently received remote signals from the first storage unit and storing the acquired currently received remote signals to a second storage unit;
• and
• the second storage unit is configured for storing the currently received remote signals acquired by the remote-signal acquiring unit.