公开(公告)号：JP2000182229A

公开(公告)日：2000-06-30

申请号：JP35773798

申请日：1998-12-16

Applicant: SONY CORP

Inventor： KOGURE ISAO ,  KOTANI YASUTAKA ,  YASAKA KAZUYUKI ,  KIMURA MASANORI ,  TAKEDA KEIKO ,  OSABE HISAO

IPC: G11B5/09 ,  G11B5/02 ,  G11B5/53 ,  G11B20/12 ,  H04N5/91

Abstract: PROBLEM TO BE SOLVED: To make it possible to reproduce information recorded in two recording systems by setting a gap width of a magnetic head to a value wider than a 1st track width in accordance with a 1st recording system and smaller than a 2nd track width in accordance with a 2nd recording system. SOLUTION: To enable this device to record and reproduce a video audio signal on an 8 mm video tape in a digital 8 mm system and be also practical enough to reproduce an video audio signal of an analog 8 mm system recorded on an 8 mm video tape, a gap width GpW of magnetic heads 12A, 12B is selected to be 19-29 μm, a value near the gap width GpW (= 20.5 μm) from which the highest C/N can be obtained in the analog 8 mm system. In such a manner, a sufficient reproducing output is obtained when a video audio signal recorded in the analog 8 mm system is reproduced, and also sufficient C/N can be obtained in practice also when a video audio signal recorded in the digital 8 mm system is reproduced.