The present invention relates to signal receiving apparatus and method for
efficiently transmitting a digital satellite broadcast signal received,
and recording medium. A DSS broadcast signal from an antenna is subjected
to station selection in a front end circuit, the scramble thereof is
released in a descramble circuit, and further it is judged whether the
broadcast signal concerned is an SD broadcast signal or HD broadcast
signal. The SD signal is decoded in an MPEG decode circuit, converted to
an NTSC signal in an NTSC encode circuit, and then output from a video
cable. The HD signal is rearranged to a structure conformed with the ATSC
system in a multiplexing editing circuit, encrypted in an encryption
circuit and then output from an IEEE1394 interface.