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：US3617648A

公开(公告)日：1971-11-02

申请号：US3617648D

申请日：1969-11-13

Applicant: IBM

Inventor： IRVING WILLIAM F ,  KLEIN WALTER F

IPC: G11B5/86

CPC classification number: G11B5/865

Abstract: The invention concerns apparatus for making a plurality of duplicate copies from master recordings by using a magnetic transfer technique, particularly involving the steps of applying pressure between a master media and a blank copy media, thereafter moving an assembly of permanent magnets across the superimposed media to effect transfer of the information from the master media to the copy media by utilizing a one-way clutch mechanism interposed between the driving mechanisms and the permanent magnet assembly, all of the foregoing being accomplished by movement of a single operating member accessible to the operator and subsequently, due primarily to the clutch relationship with the permanent magnet assembly, releasing the magnet assembly at the end of its travel, thereby reducing inertia effects that would otherwise be objectionable from a loading standpoint.

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：US3578337A

公开(公告)日：1971-05-11

申请号：US3578337D

申请日：1968-11-20

Applicant: IBM

Inventor： KLEIN WALTER F

IPC: G11B21/04 ,  G11B21/12 ,  G11B25/04 ,  G11B5/02

CPC classification number: G11B25/04

Abstract: A transducer is driven in reciprocating motion relative to a recording medium for scanning the medium by attaching a band having apertures therein to the transducer. Rotating means has means to engage the apertures in the band to provide positive engagement between the rotating means and the band. The direction of rotation of the rotating means is reversed at each end of scanning by the transducer. The change in direction of rotation of the rotating means is accomplished through a pivotally mounted member that locks a ball retaining member against rotation.

公开(公告)号：US3536855A

公开(公告)日：1970-10-27

申请号：US3536855D

申请日：1968-01-16

Applicant: IBM

Inventor： GARDNER CHARLES L JR ,  KLEIN WALTER F ,  YOUNT WILLIAM R

IPC: G11B5/86

CPC classification number: G11B5/865

公开(公告)号：US3447743A

公开(公告)日：1969-06-03

申请号：US3447743D

申请日：1965-10-14

Applicant: IBM

Inventor： HOSKINS THOMAS A ,  KLEIN WALTER F

IPC: B23B31/177 ,  G06K1/00 ,  G06K17/00 ,  G06K1/08 ,  B26F1/04 ,  G06K1/10

CPC classification number: G06K1/00 ,  G06K17/00 ,  Y10T83/4569