A transmitter comprises a demodulation means for demodulating inputted stream data to digital data, and outputting the digital data to a digital interface; a decoding means for decoding the digital data to obtain an analog signal; and a format conversion means 125 for converting the format of the analog...http://www.google.com.hk/patents/US20010055358?utm_source=gb-gplus-share專利 US20010055358 - Recorder and transmitter
