Dynamic magnetic information storage or retrieval – Manual input recording
Patent
1988-01-07
1989-07-25
Richardson, Robert L.
Dynamic magnetic information storage or retrieval
Manual input recording
358339, 358341, 360 39, 360 191, H04N 5008, H04N 576
Patent
active
RE0330019
ABSTRACT:
The present invention relates to digital television tape recording and more particularly to such recording using helical scan apparatus of the segmented type i.e. where one field of video is recorded by a plurality of rotations of the headwheel.
The invention also provides apparatus for recording or playing back a digital television signal comprising a helical scanning device including a drum which may be a rotatable headwheel provided with a plurality of recording/playback heads, guide means for wrapping a magnetic recording tape around a portion of the circumference of the drum, means for rotating the headwheel, and means for moving the tape around the surface of the drum whereby one field of a television video picture is recorded or played back by a plurality of rotations of the headwheel, characterized in that the recording/playback heads are disposed on the headwheel.
REFERENCES:
patent: 4283744 (1981-08-01), Melwisch et al.
patent: 4353098 (1982-10-01), Heinz et al.
Masahiko Morizono et al., "Digital Video Recording-Some Experiments and Future Considerations" in SMPTE Journal, vol. 89, No. 9 (9/80), pp. 658-662.
Katsuya Yokoyama et al., "An Experimental Digital Videotape Recorder" in SMPTE Journal, vol. 89, No. 3 (3/80), pp. 173-180.
Ampex, "Labor-Experimentieranlage fur Digitale Video-Magnetbandaufzeichnung," in Fernsehtechnik, vol. 51, No. 25 (12/79), pp. 72-74.
Independent Broadcasting Authority
Richardson Robert L.
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