Helical scan magnetic tape recording apparatus for reforming rea

Details Helical scan magnetic tape recording apparatus for reforming rea Helical scan magnetic tape recording apparatus for reforming rea

1990-08-28

1992-10-13

Tupper, Robert S.

Dynamic magnetic information storage or retrieval

Record transport with head stationary during transducing

Drum record

G11B 553, G11B 2118

Patent

active

051556413

ABSTRACT:
A rotating drum (9) has first and second writing heads (W1 and W2) and first and second reproducing heads (R1 and R2) mounted on its peripheral surfaces. The respective magnetic heads are arranged at predetermined intervals in the circumferential direction of the rotating head (9) to meet predetermined angle conditions. When a writing operation by the first writing head (W1) is completed, a writing operation by the second writing head (W2) followed. Subsequently, the first reproducing head (R1) reproduces the contents written by the first writing head (W1) and then the second reproducing head (R1) reproduces the contents written by the second writing head (W2). Such one cycle of read-after-write operation is performed while the rotating drum rotates n times (n is integer equal to or larger than 2). Thus, timings of the writing and reading operations by the respective heads do not overlap with each other. As a result, generation of crosstalk can be prevented.

REFERENCES:
Patent Abs. of Japan, vol. 13, No. 475 (p. 950) Oct. 27, 1989 JP--01 185809 Sharp, Jul, 25, 1989.
Patent Abs. of Japan, vol. 13, No. 475 (p. 950) Oct. 27, 1989 JP-A-01 185808 Sanyo Electric Co. Jul. 25, 1989.
Patent Abs. of Japan, vol. 13, No. 511 (p. 961) Nov. 16, 1989 JP-A-01 208704 (Victor Co. of Japan Ltd.) Aug. 22, 1989.
Patent Abs. of Japan, vol. 13, No. 250 (p. 882) Jun. 12, 1989 JP-A-01 049102 (Matsushita Electric Inc. Co.) Feb. 23, 1989.
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