Apparatus for recording and/or reproducing signals
AssigneeU.S. Philips Corporation
InventorEdmond deNiet
Life of this patent
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Abstract
A helical scan video recorder having a reduced drum diameter in comparison with a two-head video recorder by the use of n heads, n being greater than two, and a tape wrap angle greater than ##EQU1## An important additional advantage of this recorder is that reproduction during recording (monitoring) is possible without the use of additional heads.
Claims5
An apparatus for recording and/or reproducing signals on a magnetic tape, said apparatus comprising a generally cylindrical head drum having a circumferential gap disposed in a plane normal to the axis of the drum, a head support mounted inside said drum for rotation about said axis, at least three heads supported on said support for rotation therewith in the plane of said gap, said heads being disposed opposite said gap and uniformly spaced from each other, and means for guiding the magnetic tape along a helical path around said drum over at least ##EQU8## of the circumference of said drum with a pitch such that at least ##EQU9## of the gap circumference is covered by said tape, wherein n is the number of heads, so that, upon rotation of said support, successive heads make magnetic contact with said tape through said gap.
Dependencies are inferred from the claim text.