| 摘要 |
Disclosed herein is a drive device designed to be detachably mounted on an existing video cassette recorder and playback machine and including a friction wheel designed to frictionally engage a channel tuning wheel already located on the machine as manufactured. The invention drive device includes a control knob constrained to rotate with the friction wheel via a shaft protruding through a housing of the device with the housing being detachably mounted on the machine with the friction wheel in frictional engagement with the existing tuning wheel.
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