encoder/decoder

john_li

hi, everyone !


well...i'm thinking of a system for a project. basically the idea goes like this: for the transmission part; it consists of RF Tx module, encoder and dip switch. the dip switch will set the transmitter address, rite ? this address has to match with the address of the decoder circuit at the Rx.

at the Rx, it will receive the data/signal from the Tx. if no error or unmatched address, the data/signal will be decoded by the decoder. the data will be filtered (what kind of noise filter actually could be used ?) & stabilized. then the data/signal will be used as the i/p (to the microcontroller) to trigger some control unit.

since my knowledge is limited on this, the questions are:

a)is it the encoder/decoder is for security only...in term of receiving only the correct signal & to prevent the interference of unwanting signal for the above situation ?

b)how bout the dip switch ? i'm kind of blur bout it.how it works actually...with the encoder/decoder..in term of the setting certain address for the signal (RF).

richard_cho

<P>you'd better select some IC company and tell them your idea,then their application engineer will give u some useful suggestion.</P>