Facsimile and static presentation processing – Facsimile – Recording apparatus
Patent
1984-01-31
1986-05-27
McElheny, Jr., Donald
Facsimile and static presentation processing
Facsimile
Recording apparatus
358328, 360 64, H04N 980
Patent
active
045919240
ABSTRACT:
In a video tape recorder of the helical scan type, a pair of rotary magnetic heads for the audio signal are provided in addition to the rotary video heads so that the audio signal is recorded on the same slant track as of the video signal on a multiplex basis. The audio head pair is provided with an azimuth angle with opposite polarities from each other and different in value from that of the video head pair. The system has a first operation mode of the standard tape speed and a second operation mode in which the tape is fed at a speed, for example, 1/3 the standard tape speed. The audio and video head pairs are disposed on lines intersecting at right angles with an offset of T.sub.1 /2+T.sub.1 provided in the axial direction of rotation between the two magnetic head pairs, where T.sub.1 is the track pitch of the recording track formed on the tape in the second operation mode. The system produces overlapping tracks for the audio and video signals on the magnetic tape. In the first operation mode, the recording track is formed by a combination of magnetic heads providing an increased difference of azimuth angles between the audio and video heads, while in the second operation mode, the track is formed by a combination of magnetic heads providing a decreased difference of azimuth angles between the audio and video heads.
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Fukushima Isao
Miura Kuniaki
Okada Yoshinori
Tamura Teizo
Hitachi , Ltd.
McElheny Jr. Donald
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