Hitachi, Ltd.

Masao Hibi

Yoshizumi Eto

Akio Kumada

Hiroshi Takano

Hideo Nishijima

Isao Fukushima

A method for magnetic recording and reproducing suitable for the discontinuous recording, in which the magnetic tape is rewound during a predetermined length of time, the number of the synchronization pulses recorded on the magnetic tape is counted and stored during the rewinding of the magnetic tape, and the magnetic recording is re-started when the number of the synchronization pulses, counted during the winding of the magnetic tape after the pause period, reaches the value equal to the stored number of the synchronization pulses, whereby a satisfactory continuity is established between the pictures recorded before and after a pause period.

Method and apparatus for magnetic recording and reproducing

An element in which only a single domain-wall can move sidewise, having a crystal plate of an irregular ferroelectric which is Z-plated at opposite surfaces and is then cut or cleaved in the &lt;110&gt; direction at its periphery and transparent electrodes for the polarization reversal provided at the central portions of the opposite Z-planes. The element includes at least a domain configuration such that two nucleus regions of opposite polarities are disposed on opposite sides of the region where the electrodes are provided.

Irregular ferroelectric element devised for single domain-wall motion

An element in which only a single domain-wall can move sidewise, having a crystal plate of an irregular ferroelectric which is cut in the Z-plane at opposite surfaces and is then cut or cleaved in the &lt;110&gt; direction at its periphery and transparent electrodes for the polarization reversal provided at the central portions of the opposite Z-planes. The element includes at least a domain configuration such that two nucleus regions of opposite polarities are disposed on opposite sides of the region, i.e., a domain having a stationary polarity, where the electrodes are provided.

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Kodaira, Japan

Masao Hibi