Dynamic magnetic information storage or retrieval – Record editing
Patent
1981-10-05
1984-01-17
Faber, Alan
Dynamic magnetic information storage or retrieval
Record editing
360 64, 360 381, 358312, H04N 593
Patent
active
044266669
ABSTRACT:
A video signal recording/reproducing apparatus has two main rotary heads, two sub-rotary heads, and a recorded video tape. One main rotary head M1 has a +6.degree. azimuth angle and one sub-rotary head S1 has a -6.degree. azimuth angle. The sub-rotary head S1 is mounted near the main rotary head M1. For example, the distance between the main rotary head M1 and the sub-rotary head S1 corresponds to two horizontal sync signal intervals of a video signal. Main rotary head M2 has a -6.degree. azimuth angle and sub-rotary head S2 has a +6.degree. azimuth angle. The distance between the main rotary head M2 and the sub-rotary head S2 is the same as that between M1 and S1. The main rotary head M2 is located at a position opposite to the main rotary head M1 on a rotary head disk. In the fast motion reproduction mode, the main rotary head M1 and the sub-rotary head S1 scan recorded video tracks on the video tape. The reproduced signal of the main rotary head M1 has several lower or zero level positions in one field. The reproduced signal of the sub-rotary head S1 is selectively substituted for the lower or zero level positions of the reproduced signal of the main rotary head M1.
REFERENCES:
patent: 4005476 (1977-01-01), Dishopp
patent: 4197562 (1980-04-01), Kikuya
patent: 4293880 (1981-10-01), Tsukada
Kobayashi Masa-aki
Kohda Minoru
Faber Alan
Matsushita Electric - Industrial Co., Ltd.
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