Dynamic information storage or retrieval – Control of storage or retrieval operation by a control... – Mechanism control by the control signal
Patent
1987-06-25
1988-12-27
Richardson, Robert L.
Dynamic information storage or retrieval
Control of storage or retrieval operation by a control...
Mechanism control by the control signal
369 44, 350247, 350255, G11B 709
Patent
active
047945818
ABSTRACT:
A focus and tracking support includes a pair of bender beams extending parallel to a track to be scanned. The bender beams are cantilevered from a mounting block carried by a head carriage. Disposed intermediate and pivotally secured to the distal ends of the bender beams is a lens holder having two pairs of oppositely-extending, pivotally-secured support arms connected to the distal ends. The arrangement is such that when the bender beams are moved in the same direction tracking functions are performed while when the bender beams are moved in opposing directions, focussing functions are performed. The arms and lens holder are formed from a plastic unitary member. When the bender beams are piezo-electric beams, electrical signals for focus and tracking controls are superposed for effecting simultaneous focus and tracking functions.
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International Business Machines - Corporation
Richardson Robert L.
Somermeyer H. F.
Young W. R.
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