EP 0000946 A3 19790321 - APPARATUS FOR CONTROLLING THE MOVEMENT OF THE DATA HEAD IN A MOVING-HEAD DATA RECORDING SYSTEM
Title (en)
APPARATUS FOR CONTROLLING THE MOVEMENT OF THE DATA HEAD IN A MOVING-HEAD DATA RECORDING SYSTEM
Publication
Application
Priority
US 82931277 A 19770831
Abstract (en)
[origin: EP0000946A2] Two servoing functions, both operating from the data reading and recording transducer, are performed in a high performance movinghead disc drive. One servo rapidly moves the head from its current track to any other track utilizing absolute track identifying addresses recorded in the inter-sector gap between data sectors. Once located on a track, the other servo maintains head location precisely over the center of that track while data is being read or recorded employing track following information also recorded in the inter-sector gap. The resolution of transducer location is enhanced by secondary use of the track following information.
IPC 1-7
IPC 8 full level
G11B 5/55 (2006.01); G11B 5/596 (2006.01); G11B 21/08 (2006.01); G11B 21/10 (2006.01)
CPC (source: EP)
G11B 5/5547 (2013.01); G11B 5/59633 (2013.01)
Citation (search report)
- [X] US 4027338 A 19770531 - KRIL RUSSELL STEPHEN
- [X] US 3812533 A 19740521 - KIMURA N, et al
- US 3593333 A 19710713 - OSWALD RICHARD K
- US 3691543 A 19720912 - MUELLER FRANCIS E
- [A] DE 2657642 A1 19770707 - IBM
- [A] DE 2657266 A1 19770707 - IBM
- [A] US 3838457 A 19740924 - PALMER R
- [E] DE 2808404 A1 19780914 - PHILIPS NV
- [A] IBM TECHNICAL DISCLOSURE BULLETIN, vol. 10, no. 6, November 1967, New York. WILFORD et al: "Disk surface digital adressing", page 783
Designated contracting state (EPC)
DE FR GB SE
DOCDB simple family (publication)
EP 0000946 A2 19790307; EP 0000946 A3 19790321; JP S5445113 A 19790410
DOCDB simple family (application)
EP 78100748 A 19780825; JP 10692778 A 19780831