Data recording and playback on video tape--a multi-channel analog interface for a digital audio processor system.
The design of an analog interface to a digital audio signal processor (DASP)-video cassette recorder (VCR) system is described. The complete system represents a low-cost alternative to both FM instrumentation tape recorders and multi-channel chart recorders. The interface or DASP input-output unit described in this paper enables the recording and playback of up to 12 analog channels with a maximum of 12 bit resolution and a bandwidth of 2 kHz per channel. Internal control and timing in the recording component of the interface is performed using ROMs which can be reprogrammed to suit different analog-to-digital converter hardware. Improvement in the bandwidth specifications is possible by connecting channels in parallel. A parallel 16 bit data output port is provided for direct transfer of the digitized data to a computer.
Blaettler
M
M
Institut für Biomedizinische Technik der Universität, Zürich, Switzerland.
Bruegger
A
A
Forster
I C
IC
Lehareinger
Y
Y
D004562:Electrocardiography / Q000379:methods*; D006801:Humans; D014743:Videotape Recording / Q000295:instrumentation* / Q000379:methods