发明名称 |
DATA AND SERVO SAMPLING IN SYNCHRONOUS DATA DETECTION CHANNEL |
摘要 |
An analog-to-digital converter circuit in a sampling data detection channel of a disk drive synchronously samples user data in the data track areas at a first quantization resolution and samples servo bursts from the spoke areas at a second quantization resolution effectively greater than said first quantization resolution. An offset circuit provides a predetermined analog offset signal to a combining circuit which combines it with an incoming analog signal to provide a composite signal during a spoke servo burst sampling interval. An analog-to-digital converter samples the composite signal during the servo spoke burst sampling interval, and synchronously samples the analog signal during a user data sampling interval. A digital averaging circuit averages the servo spoke samples over a predetermined averaging interval to provide averaged burst samples having increased bit resolution. |
申请公布号 |
EP0898813(A4) |
申请公布日期 |
2001.04.18 |
申请号 |
EP19970952555 |
申请日期 |
1997.12.18 |
申请人 |
QUANTUM CORPORATION |
发明人 |
PATAPOUTIAN, ARA;FISHER, KEVIN, D.;BUCH, BRUCE, D. |
分类号 |
G11B5/55;G11B5/596;G11B20/10;G11B20/12;G11B21/08;G11B21/10;H03M1/20;H03M1/48 |
主分类号 |
G11B5/55 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|