公开(公告)号：US3598927A

公开(公告)日：1971-08-10

申请号：US3598927D

申请日：1969-03-21

Applicant: IBM

Inventor： BECKER FRANK E ,  KLEIN WALTER F

IPC: G11B27/10 ,  G09B5/06 ,  G11B5/56 ,  G11B21/12

CPC classification number: G09B5/062

Abstract: Educational apparatus in the form of a recording/reproducing unit accommodates a record media comparable in size to the familiar IBM tabulation card. The media has printed information on one side such as questions and answers, circuit diagrams, etc. that are visible to the user when in operating position and recorded information on the opposite side positioned for scanning by a transducer during playback and record modes. Preferably, the media has either the visible information or the magnetically stored information, or both, divided into blocks of convenient size representing different questions, multiple choice answers, or the like, with the recorded information and the visible information correlated with one another. Programming structures are provided in the apparatus enabling the user to roughly scan toward a selected block of information on the media but defining a plurality of program stops arranged adjacent the beginning of each of the blocks of information and facilitating the positioning of the transducer with respect to the first track in a selected block.

公开(公告)号：US3237935A

公开(公告)日：1966-03-01

申请号：US34517664

申请日：1964-02-17

Applicant: IBM

Inventor： BECKER FRANK E ,  DEN TEX KAREL

IPC: B65H1/04 ,  B65H1/14 ,  G06K13/10 ,  G06K13/14

CPC classification number: G06K13/10 ,  B65H1/04 ,  B65H1/14 ,  B65H2701/1125 ,  B65H2801/21 ,  G06K13/14

公开(公告)号：US3082854A

公开(公告)日：1963-03-26

申请号：US10970461

申请日：1961-05-12

Applicant: IBM

Inventor： BECKER FRANK E ,  BINGHAM DILLION M ,  YOUNG RICHARD J

IPC: B41J23/36 ,  B41J35/14

CPC classification number: B41J35/14 ,  B41J23/36

公开(公告)号：US3571527A

公开(公告)日：1971-03-16

申请号：US3571527D

申请日：1968-01-16

Applicant: IBM

Inventor： BECKER FRANK E ,  KLEIN WALTER F ,  YOUNT WILLIAM R

IPC: G06K1/04 ,  G11B5/80 ,  G11B5/86

CPC classification number: G06K1/04

Abstract: The invention concerns methods and apparatus for establishing accurate positioning and registration of master and duplicate magnetic record media during a magnetic transfer operation to insure compatibility of each kind of media in a utilization device. The invention is particularly useful with media having magnetic signals recorded according to a Boustrophedonic pattern. Such a pattern is created when the record head traces a signal path having a plurality of tracks with, as an example, tracks 1, 3, 5, 7, etc. recorded left to right, tracks 2, 4, 6, 8, etc. recorded right to left, and wherein the head steps a fixed distance at the end of each track.

公开(公告)号：US2926768A

公开(公告)日：1960-03-01

申请号：US76275358

申请日：1958-09-23

Applicant: IBM

Inventor： BECKER FRANK E ,  PALMER LEON E

IPC: B41J1/60

CPC classification number: B41J1/60