An improved video recorder/transceiver with expanded functionality ("VCR-ET") including a capability for storing video and video programs in digital format, editing such programs, transferring such programs onto a hard copy magnetic media, and transmitting such programs to a remote location using a second...http://www.google.com.tw/patents/US5164839?utm_source=gb-gplus-share專利 US5164839 - Method for handling audio/video source information
