Information signal recording medium of the rotary type

G - Physics – 11 – B

Patent

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352/32.4

G11B 7/00 (2006.01) G11B 7/0045 (2006.01) G11B 7/007 (2006.01) G11B 7/013 (2006.01) G11B 7/09 (2006.01) G11B 11/05 (2006.01) G11B 21/10 (2006.01) G11B 23/36 (2006.01)

Patent

CA 1119296

ABSTRACT OF THE DISCLOSURE An information signal recording medium of rotary type has a flat surface with successions of pits formed therein as respective concavities in response to an information signal. The successions of pits constitute respective circular tracks of a specific pitch. Each it is formed with a width, equal to the width of a track, which is substantially equal to or greater than said pitch of the track.

296451

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