Dynamic magnetic information storage or retrieval – General recording or reproducing – Signal switching
Patent
1989-10-20
1991-02-26
Richardson, Robert L.
Dynamic magnetic information storage or retrieval
General recording or reproducing
Signal switching
360 351, G11B 5012
Patent
active
049966103
ABSTRACT:
Disclosed is a magnetic recording/reproduction apparatus wherein a pulse corresponding to rotation of a magnetic disk is obtained by detecting a PG yoke signal as a rotational position detection index in the disk by a PG coil as a pulse detection means, recording/reproduction control is performed by a control circuit or the like as erase recording/reproduction control means operated in accordance with the pulse, erase and recording/reproduction operations of data are performed with respect to the disk by a composite magnetic head controlled by the erase recording/reproduction control means, i.e., the composite magnetic head in which an erase gap and a read/write gap are integrally provided so as to be separated from each other in the longitudinal direction of a recording track.
REFERENCES:
patent: 3311710 (1967-03-01), Murphy et al.
patent: 3423524 (1969-01-01), Bradford
patent: 3686432 (1972-08-01), Deguchi et al.
patent: 3806902 (1974-04-01), Drees et al.
patent: 3809804 (1974-05-01), Okuno et al.
patent: 4139868 (1979-02-01), Eisenberg et al.
patent: 4290088 (1981-09-01), Beecroft
patent: 4330804 (1982-05-01), Demoss
patent: 4356520 (1982-10-01), Yanagida
patent: 4367505 (1983-01-01), Stromsta et al.
patent: 4481545 (1984-11-01), Shim
patent: 4486789 (1984-12-01), Hirota et al.
patent: 4491880 (1985-01-01), Kojima et al.
patent: 4527202 (1985-07-01), Ohta
patent: 4531170 (1985-07-01), Takei et al.
patent: 4551771 (1985-11-01), Machida et al.
patent: 4583132 (1986-04-01), Nakano et al.
patent: 4587577 (1986-05-01), Tsunoda
patent: 4602296 (1986-07-01), Murakoshi
patent: 4641204 (1987-02-01), Sugiyama
patent: 4651239 (1987-03-01), Omori et al.
patent: 4660100 (1987-04-01), Sugiyama et al.
patent: 4692815 (1987-09-01), Kawahara et al.
Japanese Patent Abstract, p. 5312E77-No. JP-A-52 57814.
Japanese Patent Abstract, vol. 8, No. 6 (p-247) (1443), JP-A-58 169 326.
Japanese Patent Abstract, vol. 7, No. 238 (p-231) (1383), JP-A-58 125 224.
Olympus Optical Co,. Ltd.
Richardson Robert L.
LandOfFree
Disk-type magnetic recording apparatus with video signal discrim does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Disk-type magnetic recording apparatus with video signal discrim, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Disk-type magnetic recording apparatus with video signal discrim will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-297474