公开(公告)号：US3192477A

公开(公告)日：1965-06-29

申请号：US8247861

申请日：1961-01-13

Applicant: IBM

Inventor： PRENTKY PETER I ,  HAROLD ZIBKOFF

IPC: G11B20/14 ,  H03L7/091

CPC classification number: H03L7/091 ,  G11B20/1419

公开(公告)号：US3041546A

公开(公告)日：1962-06-26

申请号：US2645860

申请日：1960-05-03

Applicant: IBM

Inventor： PRENTKY PETER I

IPC: H03L7/06

CPC classification number: H03L7/06

公开(公告)号：US2970300A

公开(公告)日：1961-01-31

申请号：US74567758

申请日：1958-06-30

Applicant: IBM

Inventor： WITT VICTOR R ,  PRENTKY PETER I ,  DUDEK ERWIN K

IPC: G11B20/20

CPC classification number: G11B20/20

公开(公告)号：US3426337A

公开(公告)日：1969-02-04

申请号：US3426337D

申请日：1964-12-21

Applicant: IBM

Inventor： BLACK ROBERT J ,  THALER GEORGE J ,  PRENTKY PETER I ,  CORDANO RICHARD D

IPC: G11B21/10 ,  H03M1/00 ,  G11B5/02

CPC classification number: H03M1/00 ,  G11B21/106 ,  H03M1/22

公开(公告)号：US3219353A

公开(公告)日：1965-11-23

申请号：US24133762

申请日：1962-11-30

Applicant: IBM

Inventor： PRENTKY PETER I

IPC: G11B5/66 ,  G11B5/73 ,  H01F10/06

CPC classification number: G11B5/7305 ,  G11B5/66 ,  H01F10/06

公开(公告)号：US3665327A

公开(公告)日：1972-05-23

申请号：US3665327D

申请日：1969-11-14

Applicant: IBM

Inventor： PRENTKY PETER I ,  WILSON ALONZO A

IPC: G11B5/09 ,  H03K5/12 ,  H03K5/1532 ,  H03K5/19 ,  H03K5/22

CPC classification number: H03K5/19 ,  H03K5/12 ,  H03K5/22

Abstract: In a digital data detection system in which a readout signal derived from a magnetic recording of the data in encoded form is differentiated to identify the various data and clock bits represented by the peaks thereof, a discriminator is provided for eliminating shoulder noise pulses from the differentiated signal prior to the separation of the various zero-crossings thereof into ''''ones'''' and ''''zeros'''' at the output. The discriminator includes two symmetrical complementary channels through which the data and clock bits are alternately passed. The data and clock bits are delayed at the channel inputs for a period of time at least equal to the duration of the shoulder noise pulses to eliminate those noise pulses which occur prior to a valid date or clock bit. Each channel is inhibited for a selected period of time after the occurrence of a valid data of clock bit therein to eliminate noise pulses occuring subsequent to the valid bits.

公开(公告)号：US3632900A

公开(公告)日：1972-01-04

申请号：US3632900D

申请日：1969-12-31

Applicant: IBM

Inventor： KURZWELL FRED JR ,  PRENTKY PETER I ,  HASTY CHARLES E

IPC: G11B21/20 ,  G05D15/01 ,  G11B5/40 ,  G11B5/58 ,  G11B5/60

CPC classification number: G05D15/01 ,  G11B5/40 ,  G11B5/58 ,  G11B5/6005

Abstract: A system for controlling the load force between a magnetic transducer and a magnetic medium is disclosed. The system comprises a means for sensing the force between the magnetic transducer and the magnetic medium and for developing an electrical signal in response thereto, means for producing a reference signal, means for comparing the electrical signal and the reference signal and for developing an error signal therefrom, and actuator means responsive to the error signal for displacing the magnetic transducer relative to the magnetic medium.

Abstract translation: 公开了一种用于控制磁换能器和磁介质之间的负载力的系统。 该系统包括用于感测磁换能器和磁介质之间的力并用于响应于此产生电信号的装置，用于产生参考信号的装置，用于比较电信号和参考信号的装置，以及用于产生误差信号 以及响应于误差信号的致动器装置，用于使磁换能器相对于磁介质移位。