Full Title

Driving, starting or stopping record carriers of filamentary or web form; Driving both such record carriers and heads; Guiding such record carriers or containers therefor; Control thereof; Control of operating function (driving or guiding heads G11B3/00 - G11B7/00, G11B21/00) > Driving; Starting; Stopping; Arrangements for control or regulation thereof > Controlling, regulating, or indicating speed > in arrangements for recording or reproducing wherein both record carriers and heads are driven > by controlling the speed of the heads