Rotary transformer of a head drum assembly for a video cassette

Details Rotary transformer of a head drum assembly for a video cassette Rotary transformer of a head drum assembly for a video cassette

1996-12-30

1998-09-22

Huber, Paul W.

Dynamic magnetic information storage or retrieval

Record transport with head stationary during transducing

Drum record

360 64, G11B 552

Patent

active

058123482

ABSTRACT:
A rotary of a head drum assembly for a VCR in which the structure thereof is simple, thereby facilitating the manufacture and assembling thereof. Stator and rotor bodies of the rotary transformer are annular disc-shaped. The stator body has one stator channel formed on its upper surface, and the rotor body also has one rotor channel formed on its lower surface. Two stator coils are wound and attached in the stator channel, and two rotor coils wound and attached in the rotor channel. The rotor coils are electrically connected to two magnetic heads mounted on an upper drum of the head drum assembly, and the stator coils are electrically connected to a video signal processing system. A head switcher is provided so that video signals read by the magnetic heads can be alternately transferred to two preamplifiers of the video signal processing system.

REFERENCES:
patent: 4914537 (1990-04-01), Ota
patent: 5276565 (1994-01-01), Higashiyama et al.

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