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1. 发明专利

DE2210145C3 未知
公开(公告)号：DE2210145C3
公开(公告)日：1974-06-27
申请号：DE2210145
申请日：1972-03-02
申请人： INFORMATION STORAGE SYSTEMS INC., CUPERTINO, CALIF. (V.ST.A.)
发明人： PEJCHA, IVAN, SANTA CLARA, CALIF. (V.ST.A.)
IPC分类号： G11B5/55 , H02K41/035 , B25D5/02 , G11B21/02 , H02K41/02
摘要： This disclosure relates to a centering device specifically applied to a movable coil and a magnet assembly wherein the members can be centered relative to each other by the interaction of mating parts on the members when the members are moved into abutting position.

2. 发明专利

DE2210145B2 未知
公开(公告)号：DE2210145B2
公开(公告)日：1973-11-29
申请号：DE2210145
申请日：1972-03-02
申请人： INFORMATION STORAGE SYSTEMS INC., CUPERTINO, CALIF. (V.ST.A.)
发明人： PEJCHA, IVAN, SANTA CLARA, CALIF. (V.ST.A.)
IPC分类号： G11B5/55 , H02K41/035 , B25D5/02
摘要： This disclosure relates to a centering device specifically applied to a movable coil and a magnet assembly wherein the members can be centered relative to each other by the interaction of mating parts on the members when the members are moved into abutting position.

3. 发明专利

DE2526471C3 未知
公开(公告)号：DE2526471C3
公开(公告)日：1979-01-18
申请号：DE2526471
申请日：1975-06-13
申请人： INFORMATION STORAGE SYSTEMS, INC., CUPERTINO, CALIF. (V.ST.A.)
发明人： SALMOND, KENT A., LOS GATOS , PEJCHA, IVAN, SANTA CLARA
IPC分类号： G11B21/12 , G11B5/54 , G11B5/55
摘要： A disc drive for mounting a plurality of disc packs, with head access mechanism for the packs being driven by a single rotary drive.

4. 发明专利

DE2210152B2 未知
公开(公告)号：DE2210152B2
公开(公告)日：1975-01-09
申请号：DE2210152
申请日：1972-03-02
申请人： INFORMATION STORAGE SYSTEMS, INC., CUPERTINO, CALIF. (V.ST.A.)
发明人： SORDELLO, FRANK J., SAN JOSE, CALIF. (V.ST.A.)
IPC分类号： G11B20/14 , H03K4/06 , H03K4/502 , H03K4/50

5. 发明专利

DE2141104B2 未知
公开(公告)号：DE2141104B2
公开(公告)日：1974-03-28
申请号：DE2141104
申请日：1971-08-17
申请人： INFORMATION STORAGE SYSTEMS INC., CUPERTINO, CALIF. (V.ST.A.)
发明人： MATTHEWS, RICHARD D. , SORDELLO, FRANK J. , HALFHILL, MARTIN O. , YANG, HAROLD S.
IPC分类号： G05D3/20 , G11B5/55 , G11B19/28

6. 发明专利

DE2039252B2 未知
公开(公告)号：DE2039252B2
公开(公告)日：1975-11-27
申请号：DE2039252
申请日：1970-08-07
申请人： INFORMATION STORAGE SYSTEMS, INC., CUPERTINO, CALIF. (V.ST.A.)
发明人： HAEFHILL, MARTINO , SORDELLO, FRANK J.
IPC分类号： G05B11/36 , G05D3/14 , G05B23/02
摘要： 1328695 Digital control of position INFORMATION STORAGE SYSTEMS Inc 20 Aug 1970 [20 Aug 1969] 40252/70 Heading G4H [Also in Division H2] A circuit for balancing the effects of offset and drift in components of an amplifier 11 which forms part of a D.C. servo system used, for example, in positioning an array of read/write heads at selected track locations on the discs of a magnetic data storage device, comprises a summing junction 12 which receives tachometer TACH, coarse position CPS, fine position FPS, and temperature compensation signals T 1 , T 2 , an inverter 13 which receives the output of the amplifier 11 or the position signal from the actuator or motor (not shown) supplied by the amplifier, and a summing junction 14 which receives the output of the inverter 13 and the fine position FPS and temperature compensation signals T 1 , T 2 , all of which are combined to form a difference signal which is equal in magnitude to, but opposite in phase with, the aggregate offset and D.C. drift in the amplifier 11, this difference signal being fed back as a balance signal to the junction 12. A gate 16 blocks the amplified difference signal during the coarse positioning step, the signal being fed to a low pass filter 17 and, after storage therein, applied through a buffer amplifier 18 to the junction 12. In this manner, the balance signal is determined during the fine positioning step and applied to the amplifier 11 during both the fine and coarse steps. The fine positioning may be done by a mechanical detent or by a fine position servo as described in Specification 1,294,841. The circuit formed by members 15, 16, 17 and 18 comprises an arrangement of transistors, diodes and resistors, an operational amplifier, a logic unit and a capacitor, Fig. 2 (not shown). Operation is such that the balance signal is always of the same polarity. To prevent damage during start-up of the system, impedances in series with the capacitor are bypassed for a predetermined period during the starting operation to reduce the time constant of the R.C. circuit, the by-pass circuit being a series-connected resistor and transistor controlled by the logic unit.

7. 发明专利

DE2124188B2 未知
公开(公告)号：DE2124188B2
公开(公告)日：1975-11-20
申请号：DE2124188
申请日：1971-05-15
申请人： INFORMATION STORAGE SYSTEMS, INC., CUPERTINO, CALIF. (V.ST.A.)
发明人： HALFHILL, MARTIN O., SAN JOSE, CALIF. (V.ST.A.)
IPC分类号： G11B19/20 , H02H3/24 , H02H9/02 , H02J9/04 , G11B21/12

8. 发明专利

DE2452020C3 未知
公开(公告)号：DE2452020C3
公开(公告)日：1980-10-09
申请号：DE2452020
申请日：1974-11-02
申请人： INFORMATION STORAGE SYSTEMS, INC., CUPERTINO, CALIF. (V.ST.A.)
发明人： SORDELLO, FRANK J., LOS GATOS , CUDA, JOHN, SARATOGA
IPC分类号： G05D13/62 , G05D3/12 , G11B5/596 , G11B21/10 , G11B5/55

9. 发明专利

DE2452020B2 未知
公开(公告)号：DE2452020B2
公开(公告)日：1980-01-24
申请号：DE2452020
申请日：1974-11-02
申请人： INFORMATION STORAGE SYSTEMS, INC., CUPERTINO, CALIF. (V.ST.A.)
发明人： SORDELLO, FRANK J., LOS GATOS , CUDA, JOHN, SARATOGA
IPC分类号： G05D13/62 , G05D3/12 , G11B5/596 , G11B21/10 , G11B5/55

10. 发明专利

DE2502994B2 未知
公开(公告)号：DE2502994B2
公开(公告)日：1978-05-24
申请号：DE2502994
申请日：1975-01-25
申请人： INFORMATION STORAGE SYSTEMS, INC., CUPERTINO, CALIF. (V.ST.A.)
发明人： CALETTI, ROBERT H., MENLO PARK, CALIF. (V.ST.A.)
IPC分类号： G11B17/038 , G11B17/26 , G11B19/20 , G11B5/012

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