Christopher Brett Roman

US Patent:

D518814, Apr 11, 2006

Filed:

Jan 5, 2005

Appl. No.:

29/220778

Inventors:

Brian Shim - Santa Monica CA, US
Christopher Roman - Wrentham MA, US

Assignee:

Numark Industries, LLC - Cumberland RI

International Classification:

1401

US Classification:

D14168, D14203, D14217

US Patent:

20050052981, Mar 10, 2005

Filed:

Sep 7, 2004

Appl. No.:

10/935492

Inventors:

Brian Shim - Santa Monica CA, US
Christopher Roman - Wrentham MA, US

International Classification:

G11B005/09

US Classification:

369059260, 369047380

Abstract:

The digital sound playback device () of the present invention includes a physical interface that closely simulates an analog scratch turntable. The digital sound playback device () includes a motor () that directly drives a hollow spindle (). A platter () is connected to the hollow spindle (). A center spindle () is routed through the hollow spindle () where the rotational axis of the hollow spindle () is co-axial with the rotational axis of the center spindle (). A full-size vinyl LP record () is removably connected to the center spindle (). Digital encoders () are used to respectively detect the rotational speed and direction of the platter () and the center spindle () to respectively create a platter and center spindle control signal. The control signals are used by a central control processor () to determine how the digitized audio should be modified. As a result, a digital audio file can be scratched in similar fashion to an analog vinyl record on an analog turntable.