Dynamic magnetic information storage or retrieval – Monitoring or testing the progress of recording
Patent
1973-04-04
1976-12-21
Konick, Bernard
Dynamic magnetic information storage or retrieval
Monitoring or testing the progress of recording
360 10, H04N 578
Patent
active
039992187
ABSTRACT:
A video signal recording and reproducing apparatus for stop motion pictures comprises a memory device for recording a signal, for example, a signal during the period of time of one field corresponding to one scene from telecast video signals, means for extracting a signal corresponding to any one instantaneous scene from video signals produced from a television receiver set or the like for recording on said memory device, and means for effecting repeated reproduction of the recorded signal to produce a video signal for a stop motion picture. The memory device is embodied by a field memory device provided with a magnetic recording medium such as a magnetic disc or magnetic sheet effecting one revolution during the period of time of one field. The employment of the video signal recording and reproducing apparatus for stop motion picture permits a receiver to view, as a stop motion picture, any instantaneous motion picture he desires during the period of viewing the telecast. Recording is restricted to either odd or even fields. As a consequence, previously recorded still frames can be recorded over by a new signal without producing moire noise on playback. Thus, an erase head is not required to remove unwanted still frames from the memory.
REFERENCES:
patent: 2955157 (1960-10-01), Young
patent: 3026369 (1962-03-01), Lohmann
patent: 3397283 (1968-08-01), Stosberg
patent: 3501584 (1970-03-01), Machein
patent: 3518366 (1970-06-01), Phan
patent: 3637928 (1972-01-01), Poulett
patent: 3732362 (1973-05-01), Kinjo
patent: 3812522 (1974-05-01), Izura
"Reviewing Slow-Motion Disc Principles," by Lee Stratton; Broadcast Engineering; Feb., 1969, pp. 14-18.
Ishibashi Hiroshi
Ito Toshi
Iyama Akiyoshi
Tajima Katsutoshi
Faber Alan
Hitachi , Ltd.
Konick Bernard
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