Dynamic information storage or retrieval – With servo positioning of transducer assembly over track... – Optical servo system
Reexamination Certificate
2005-01-25
2005-01-25
Hindi, Nabil (Department: 2655)
Dynamic information storage or retrieval
With servo positioning of transducer assembly over track...
Optical servo system
Reexamination Certificate
active
06847596
ABSTRACT:
A servo system with a multi-track seek algorithm with an track zero crossing period integrity test is presented. Zero crossing periods for subsequent cycles can be determined from a tracking error signal. If the zero crossing period for a first cycle differs substantially from the zero crossing period for a second cycle, then an error can be indicated. In some embodiments, the first cycle and the second cycle are subsequent cycles. In some embodiments, the zero crossing period in the second cycle can be between half and twice the zero crossing period in the first cycle. In some embodiments, other ranges are utilized. For example, in some embodiments the zero crossing period in the second cycle can be between one quarter and four times the zero crossing period in the first cycle.
REFERENCES:
patent: 4513407 (1985-04-01), Bricot
patent: 4677602 (1987-06-01), Okano et al.
patent: 4682332 (1987-07-01), Okamoto et al.
patent: 4730295 (1988-03-01), Bressers
patent: 4761776 (1988-08-01), Opheij
patent: 4785451 (1988-11-01), Sako et al.
patent: 4791627 (1988-12-01), Yonezawa
patent: 4856108 (1989-08-01), Tinet
patent: 4862447 (1989-08-01), Opheij
patent: 4864118 (1989-09-01), Opheij et al.
patent: 4866692 (1989-09-01), Saito et al.
patent: 4878211 (1989-10-01), Suzuki et al.
patent: 4893298 (1990-01-01), Pasman et al.
patent: 4901300 (1990-02-01), Van Der Zande et al.
patent: 4959822 (1990-09-01), Pasman et al.
patent: 4972401 (1990-11-01), Carasso et al.
patent: 5014274 (1991-05-01), Higurashi et al.
patent: 5023854 (1991-06-01), Satoh et al.
patent: 5023856 (1991-06-01), Raaymakers et al.
patent: 5060219 (1991-10-01), Lokhoff et al.
patent: 5124966 (1992-06-01), Roth et al.
patent: 5140580 (1992-08-01), Ohara et al.
patent: 5146443 (1992-09-01), Iwase et al.
patent: 5228019 (1993-07-01), Yanagi
patent: 5247494 (1993-09-01), Ohno et al.
patent: 5270988 (1993-12-01), Kabayashi
patent: 5295127 (1994-03-01), Verboom et al.
patent: 5333126 (1994-07-01), Fukuda et al.
patent: 5339301 (1994-08-01), Raaymakers et al.
patent: 5341356 (1994-08-01), Dieleman et al.
patent: 5377178 (1994-12-01), Saito et al.
patent: 5390159 (1995-02-01), Schylander
patent: 5408454 (1995-04-01), Hasegawa
patent: 5418764 (1995-05-01), Roth et al.
patent: 5434834 (1995-07-01), Shinoda et al.
patent: 5459712 (1995-10-01), Sugaya et al.
patent: 5467335 (1995-11-01), Braat
patent: 5479388 (1995-12-01), Gondou et al.
patent: 5491677 (1996-02-01), Sasaki
patent: 5587991 (1996-12-01), Nabeshima et al.
patent: 5610880 (1997-03-01), Watanabe et al.
patent: 5654947 (1997-08-01), Roth et al.
patent: 5729511 (1998-03-01), Schell et al.
patent: 5740143 (1998-04-01), Suetomi
patent: 5793737 (1998-08-01), Den Boef
patent: 5831946 (1998-11-01), De Bie
patent: 5835462 (1998-11-01), Mimnagh
patent: 5841739 (1998-11-01), Iida et al.
patent: 5850382 (1998-12-01), Koishi et al.
patent: 5875158 (1999-02-01), Schell
patent: 5881044 (1999-03-01), Park et al.
patent: 5886985 (1999-03-01), Kobayashi et al.
patent: 5896353 (1999-04-01), Naohara
patent: 5995462 (1999-11-01), Harold-Barry
patent: 6087644 (2000-07-01), Schell
patent: 6157599 (2000-12-01), Yamashita et al.
DPHI Acquisitions, Inc.
Hindi Nabil
MacPherson Kwok & Chen & Heid LLP
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