Dynamic magnetic information storage or retrieval – General processing of a digital signal – Data clocking
Patent
1997-04-09
1999-12-07
Sniezek, Andrew L.
Dynamic magnetic information storage or retrieval
General processing of a digital signal
Data clocking
360 60, G11B 509, G11B 1504
Patent
active
059993537
ABSTRACT:
A magnetic disk storage apparatus provides with a phase locked loop or a phase sync circuit including a phase comparator, a charge pump, a filter and a voltage-controlled oscillator. The phase sync circuit includes a register which is connected to an information processing system and adapted to store therein the response characteristics of the phase comparator, the charge pump, the filter and the voltage-controlled oscillator as instructed from the information processing system. In this way, in accordance with the information on the response characteristics from the information processing system, the phase sync circuit is controlled thereby to assure a stable operation even in the case of the data transfer speed varying between inner and outer track such as occurs in a magnetic disk.
REFERENCES:
patent: 4422109 (1983-12-01), Sampei et al.
patent: 4494080 (1985-01-01), Call
patent: 4849714 (1989-07-01), Takahashi et al.
patent: 4862296 (1989-08-01), Murabayashi et al.
patent: 4894734 (1990-01-01), Fischler et al.
patent: 4980653 (1990-12-01), Shepherd
patent: 5157354 (1992-10-01), Saiki et al.
patent: 5187615 (1993-02-01), Miyazawa et al.
patent: 5404250 (1995-04-01), Hase et al.
patent: 5633766 (1997-05-01), Hase et al.
G. McDaniel, IBM Dictionary of Computing, p. 176; p. 235, 1994.
Hase Kenichi
Hirano Akihiko
Horita Ryutaro
Kojima Shin-ichi
Miyazawa Syoichi
Hitachi , Ltd.
Sniezek Andrew L.
Wong K.
LandOfFree
Magnetic disk storage apparatus with phase sync circuit having c does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Magnetic disk storage apparatus with phase sync circuit having c, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Magnetic disk storage apparatus with phase sync circuit having c will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-830910