CTL was responsible for completing the electrical/electronic design, prototype and testing of the product and,
in most cases, design of the PCB(s) as well.
monitors or "ultrasound stethoscopes". These devices employ ultrasonic sound waves and Doppler physics
to detect and measure minute levels of arterial/venous blood flow as well as small areas of tissue movement
such as the beating heart wall of a (sometimes very early term) prenatal fetus. The units couple low noise,
high sensitivity RF/analog transceiver circuitry to multiple microcontrollers which control and monitor such
functions as heart rate, transmit power level, battery condition and auto power down. Innovations achieved
in these projects resulted in the issuance of two separate patents.
scrambling/de-scrambling system for CATV and the development of a
unique, remote controlled, frequency agile (synthesized) modulator for
application in an interactive cable TV headend. The modulator designed
includes an embedded microcontroller which allows multiple units to be
controlled via a shared RS-232 multi-drop network. Each modulator could
then be set to have a unique address on the RS-232 loop, thus allowing
individual remote control and monitoring of the unit's functions such as
output channel (2 thru 117), carrier and output levels, video and sound
modulation levels, channel plan (NTSC, PAL, etc.), and other
miscellaneous functions.
storage array intended for use with UNIX or NT storage clusters. The rack mounted shelf accepted either 10
or 14 high capacity disk drives. The SCSI version of the product mounted the drives to either a split or single
bus at speeds up through 40 MHz (80 MBytes/S) and could operate in either single-ended ("Ultra SCSI") or
differential ("LVD" or "Ultra SCSI-2") mode. The Fibre Channel shelf mounted the (10 or 14) drives to the
server or host in a single 1G-Bit/S FC-AL (Fibre Channel Arbitrated Loop).
