A low power recording devices permits various flexible power options, including a no-battery option in which the recording device satisfies its entire power requirements from the telephone wall socket and from the RS-232 socket of a computer, and a no-battery option in which the recording...http://www.google.es/patents/US5819069?utm_source=gb-gplus-sharePatente US5819069 - Recording apparatus and method having low power consumption
Recording apparatus and method having low power consumption
