DIGITAL TAPE RECORDER Russian patent published in 1996 - IPC

FIELD: home appliances. SUBSTANCE: device has analog-to-digital converter, group digital flow generator, recording amplifier, floating magnetic head designed with piezoelectric converter, tape feeding mechanism, second immovable magnetic head, playback amplifier, two channels for processing digital flow, two digital-to-analog converters and two low- pass filters. Unit of rotating magnetic heads, unit of correcting encoder and decoder are removed. Playback and recording is done by single universal floating magnetic head for both channels. Said head is mounted on loose end of piezoelectric converter, which drives it along sine-shaped scanning trajectory. In order to achieve this enhancement, analog-to-digital converter for conversion to code without pre-filter and memory unit, group digital flow generator and piezoelectric converter with control unit are introduced to recording circuit. Two channels for processing digital flow are introduced to playback circuit. EFFECT: increased reliability, decreased distortion caused by analog-to-digital conversion. 2 cl, 6 dwg, 1 tbl