noun
helical scan
A method of recording data on magnetic tape where the read/write heads are mounted on a rotating drum, writing diagonal tracks. Used in VCRs, DAT, and some backup tape drives.
VHSテープはヘリカルスキャン方式で記録されている。
VHS tapes are recorded using the helical scan method.
データバックアップにヘリカル
Helical scan tape drives are sometimes used for data backup.