Dynamic magnetic information storage or retrieval – General processing of a digital signal – Data in specific format
Patent
1994-05-31
1998-06-02
Psitos, Aristotelis M.
Dynamic magnetic information storage or retrieval
General processing of a digital signal
Data in specific format
360 7708, G11B 509
Patent
active
057609837
ABSTRACT:
The prerecorded embedded servo field includes at least one sub-field of prerecorded information that simultaneously provides (i) data for a first servo function and (ii) data for at least one other servo function. In another embodiment, a prerecorded embedded servo field includes a first sub-field of prerecorded information that simultaneously provides (i) automatic gain control data for a third sub-field and (ii) data for a first servo function, and a second sub-field of prerecorded information that simultaneously provides (i) automatic gain control (AGC) data for the third sub-field and (ii) data for a second servo function. Since the first and the second sub-fields in the servo field of this invention are used for AGC and another servo function, the sub-fields are arranged within the servo field so that the sub-field that requires the least precise AGC control is first and the sub-field that requires the most precise AGC control is last. To provide AGC data for the first sub-field in the servo field of this invention, AGC data are contained in a write-to-read transition area of the data region preceding the first servo sub-field. The sector mark field of this invention is immune to single bit errors. Specifically, the sub-field used for synchronization is designed so that servo synchronization timing is not lost due to a single bit error in the synchronization sub-field or in the sub-fields preceding the synchronization sub-field.
REFERENCES:
patent: 4424543 (1984-01-01), Lewis et al.
patent: 4495533 (1985-01-01), Chambers
patent: 4530019 (1985-07-01), Penniman
patent: 4530020 (1985-07-01), Sutton
patent: 4578723 (1986-03-01), Betts et al.
patent: 4631606 (1986-12-01), Sugaya
patent: 4669004 (1987-05-01), Moon et al.
patent: 4783705 (1988-11-01), Moon et al.
patent: 4811135 (1989-03-01), Janz
patent: 4819103 (1989-04-01), Okamura
patent: 4823212 (1989-04-01), Knowles et al.
patent: 4825310 (1989-04-01), Song
patent: 4825321 (1989-04-01), Hassel et al.
patent: 4920462 (1990-04-01), Couse et al.
patent: 4933785 (1990-06-01), Morehouse
patent: 4979055 (1990-12-01), Squires et al.
patent: 4979056 (1990-12-01), Squires et al.
patent: 4984100 (1991-01-01), Takayama et al.
patent: 5025335 (1991-06-01), Stefansky
patent: 5041926 (1991-08-01), Ockerse et al.
patent: 5050016 (1991-09-01), Squires
patent: 5095393 (1992-03-01), Janz
patent: 5117408 (1992-05-01), Wiespfenning et al.
patent: 5321560 (1994-06-01), Cowen
"Quantum Low Power Products, Technical Highlights", a Quantum Corp Publication, Sep. 1990, 9 pages total.
Gunnison Forrest E.
Integral Peripherals, Inc.
Psitos Aristotelis M.
Wamsley Patrick
LandOfFree
Method for optimizing AGC in a servo field including multiple us does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method for optimizing AGC in a servo field including multiple us, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for optimizing AGC in a servo field including multiple us will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1467463