Title :
The electret recording system
Author :
Amanullah, Khalid
Author_Institution :
Laser Technology Sdn. Bhd., Kuala Lumpur, Malaysia
fDate :
2/1/1994 12:00:00 AM
Abstract :
Describes a new system for recording and reproducing information on a dielectric material by selectively forming electret sites using the energy from modulated laser beams. The recorded information is read back by a specially constructed MOS FET playback head which detects the presence or absence of electric fields produced by stored charges in the electret sites on the tape. The dielectric materials must have properties which are constant and stable over a wide rage of temperatures and frequencies and must be able to retain the electric charges for long time
Keywords :
dielectric materials; electrets; electric fields; electrostatic devices; field effect transistor circuits; laser beam applications; MOS FET playback head; dielectric material; dielectric materials; electret recording system; electric charges; electric fields; frequencies; information reproduction; modulated laser beam; stored charges; temperatures; CD recording; Dielectric materials; Disk recording; Electrets; Electrostatics; Frequency; Magnetic heads; Magnetic recording; Optical recording; Polarization;
Journal_Title :
Consumer Electronics, IEEE Transactions on
