Magnetic head replacement structure in helical scan magnetic rec

Details Magnetic head replacement structure in helical scan magnetic rec Magnetic head replacement structure in helical scan magnetic rec

1997-05-23

1998-10-20

Sniezek, Andrew L.

Motion video signal processing for recording or reproducing

Local trick play processing

With randomly accessible medium

386 46, 360 22, 360 64, H04N 591

Patent

active

058259716

ABSTRACT:
A head arrangement and head offset are set so that the track pattern continuously recorded on a continuously running tape will be ordered in the sequence of recording when taken along the time dimension. In intermittent-feed still-speed recording, recording information is divided for recording, and the magnetic tape is fed momentarily by a distance equal to the tape amount recorded. In a helical scan magnetic recording and reproducing apparatus, intermittent still-speed recording is performed at prescribed intervals of time, and playback is performed with conditions that satisfy .vertline.v.vertline..ltoreq.r/N (N: positive integer, v: real number, r: positive real number) when the magnetic tape is played back at a speed v times as fast as normal playback speed and the rotary drum is rotated for playback at a speed r times as fast as recording speed. A digital playback head and an analog playback head are mounted on the same rotary drum, and the playback mode is automatically switched to play back a tape on which both analog and digital signals are recorded.

REFERENCES:
patent: 4617598 (1986-10-01), Tsuruoka et al.
patent: 4796104 (1989-01-01), Ito et al.
patent: 4796128 (1989-01-01), Takimoto
patent: 4897739 (1990-01-01), Hasegawa et al.
patent: 5267102 (1993-11-01), Yamagata
"Application of Compressed Audio Technology for Timelapse VCR"pp. 34-36, No. 29 (1990), IEEE Denshi Tokyo.

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