SLANT AZIMUTH SYSTEM
Meanwhile in Japan, all the major electronics companies were striving to produce a domestic video unit that would record for longer than 1 hour, and would be relatively cheap to feed it with tape. In Europe, Philips was also carrying out similar research. Many different formats were developed and several were launched in the market. The next breakthrough which opened the door to longer playing time and cheaper feeding costs, was the rediscovery of an idea patented in 1964 by Prof. Okamura of Japan. This is the so called slant azimuth system, which is used on every modern domestic video recorder, illustrated in Fig. 33.8.
Fig 33.8 Microstructure of tape in slant azimuth
To get more playing time on a given length of ...
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