منابع مشابه
Magnetic tape recording electrocardiograph.
R ECORDING the electrocardiogram for prolonged intervals presents difficulties from the standpoint of economy and convenience. One 200 foot roll of paper for a direct writing instrument is used in 40 minutes of continuous recording at 25 mm. per second, and reviewing this long electrocardiographic record is a cumbersome procedure. A convenient method of recording electrocardiograms and fied ele...
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f)NE of the problems in the social rehabilitation of patients in the Psychiatric hospital is the isolation from relatives and, in consequence, a reeling of not being wanted. In a ward ?t 50 long-stay patients it is common to find that only two or three relatives visit on any one day. The contrast with the admission ward is striking, as there is clear evidence of {fie stimulation of patients and...
متن کاملSurgeons' point-of-view video recording technique for scleral buckling.
Surgeons’ Point-of-View Video Recording Technique for Scleral Buckling Recording scleral buckling surgery has traditionally been limited by several factors. Commonly used overhead recording systems are costly and require constant repositioning during surgery to ensure that they capture the images of interest. A common alternative to overhead recording devices is to use an assisting photographer...
متن کاملHigh Density Pcm Magnetic Tape Recording
The Bell & Howell Enhanced-NRZ recording reproducing technique for bit packing densities up to 40,000 per track inch is described in this paper. Utilization of the pulse code modulation format of Enhanced-NRZ achieves this high density with a bit error rate of one in ten million. Bell & Howell’s standard VR-3700B instrumentation tape recorder and wideband instrumentation recording tape are used...
متن کاملBer Performance Comparisons in Digital Tape Recording
Bit-error-rate (BER) performances of various DC free coding and detection methods have been compared in digital tape recording environments. Performance sensitivities to additive noise, head-tape space variations and o track interference have been investigated at two representative linear densities. The results indicate that the performance ranking of di erent techniques depends strongly on the...
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ژورنال
عنوان ژورنال: The Journal of the Institute of Television Engineers of Japan
سال: 1961
ISSN: 1884-9644
DOI: 10.3169/itej1954.15.3