公开(公告)号：US3495145A

公开(公告)日：1970-02-10

申请号：US3495145D

申请日：1967-10-11

Applicant: IBM

Inventor： SORDELLO FRANK J ,  WILFORD CHARLES R

IPC: G05D3/14 ,  G05D3/20 ,  G11B5/55 ,  G05B13/02

CPC classification number: G11B5/5521 ,  G05D3/1418 ,  G05D3/20

公开(公告)号：US3427606A

公开(公告)日：1969-02-11

申请号：US53113566

申请日：1966-03-02

Applicant: IBM

Inventor： BLACK ROBERT J ,  SORDELLO FRANK J

IPC: G05D3/20 ,  G11B5/596 ,  G11B21/10

CPC classification number: G05D3/203 ,  G11B5/59633

公开(公告)号：US3577132A

公开(公告)日：1971-05-04

申请号：US3577132D

申请日：1968-06-06

Applicant: IBM

Inventor： ANDERSON DONALD E ,  KOCH LAWRENCE M ,  LLOYD ROBERT E ,  SORDELLO FRANK J

IPC: G11B20/16 ,  G11B5/44 ,  G11B19/28 ,  G11B27/10

CPC classification number: G11B20/16

Abstract: A phase-locked oscillator useful for a magnetic storage system receives timing pulses from a means for generating reference pulses connected to a rotary storage medium. Variations in the angular velocity and phase of the rotating storage medium result in corresponding variations of frequency and phase of a voltagecontrolled oscillator, which controls the write or record circuitry. During readout, the phase-locked oscillator is employed to locate the selected data records accurately.

公开(公告)号：US3518658A

公开(公告)日：1970-06-30

申请号：US41860264

申请日：1964-12-16

Applicant: IBM

Inventor： BLACK ROBERT J ,  SORDELLO FRANK J

IPC: G06J1/00 ,  G11B21/10 ,  H03M1/00 ,  H03K13/02

CPC classification number: G11B21/106 ,  G06J1/00 ,  H03M1/00 ,  H03M1/124

公开(公告)号：US3458785A

公开(公告)日：1969-07-29

申请号：US57774666

申请日：1966-09-07

Applicant: IBM

Inventor： SORDELLO FRANK J

IPC: G05D3/20 ,  G11B5/596 ,  H02P1/54 ,  H02P5/46 ,  H02P7/48

CPC classification number: G05D3/203 ,  G11B5/59633

公开(公告)号：US3310732A

公开(公告)日：1967-03-21

申请号：US41767164

申请日：1964-12-11

Applicant: IBM

Inventor： SORDELLO FRANK J ,  THALER GEORGE J

IPC: H03H11/16 ,  H03H11/18

CPC classification number: H03H11/16 ,  H03H11/18

公开(公告)号：US3573640A

公开(公告)日：1971-04-06

申请号：US3573640D

申请日：1968-08-23

Applicant: IBM

Inventor： HOLLSTEIN CARL P JR ,  KILTZ GERALD H ,  SORDELLO FRANK J

IPC: G11B20/16 ,  H03K3/78 ,  H03K5/00 ,  H03L7/107 ,  H03B3/04 ,  G05F3/00

CPC classification number: H03K3/78 ,  G11B20/16 ,  H03K5/00 ,  H03L7/107

Abstract: A phase compensation circuit incorporates series capacitors shunted by resistance means, with the signal channeled through the circuit so that there is virtually no loss of DC gain.

公开(公告)号：US3475734A

公开(公告)日：1969-10-28

申请号：US3475734D

申请日：1967-01-16

Applicant: IBM

Inventor： KURZWELL FRED JR ,  SORDELLO FRANK J

IPC: G06K1/12 ,  G06K7/10 ,  G11B5/00 ,  G01D15/02 ,  H04N5/76

CPC classification number: G06K1/126 ,  G06K7/10

公开(公告)号：US3404392A

公开(公告)日：1968-10-01

申请号：US63110367

申请日：1967-04-14

Applicant: IBM

Inventor： SORDELLO FRANK J

IPC: G11B5/00 ,  G11B5/012 ,  G11B5/55 ,  G11B5/596 ,  G11B5/64 ,  G11B5/66 ,  G11B5/70 ,  G11B5/716 ,  G11B5/82 ,  H01F10/06 ,  H01F10/10

CPC classification number: G11B5/012 ,  G11B5/00 ,  G11B5/5521 ,  G11B5/59633 ,  G11B5/5965 ,  G11B5/64 ,  G11B5/66 ,  G11B5/70 ,  G11B5/716 ,  G11B5/82 ,  H01F10/06 ,  H01F10/10 ,  Y10S428/925 ,  Y10S428/928 ,  Y10S428/935 ,  Y10S428/936 ,  Y10S428/937 ,  Y10T428/12646 ,  Y10T428/1275 ,  Y10T428/12986