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公开(公告)号：DE2328501A1
公开(公告)日：1973-12-20
申请号：DE2328501
申请日：1973-06-05
Applicant: IBM
Inventor： GORETZKI JEROME ARNOLD , HENDRICKSON KENNETH EARL , MATTSON GARY LEVERNE , MATTSON LARRY FREDERICK
Abstract: Control apparatus for a stepper motor functional to provide a varying amount of retro-torque braking depending on the load and voltage applied to the motor. The control apparatus includes circuitry responsive to the velocity of the rotor of the motor and more particularly to the time required for the rotor to move through a certain rotation and means for varying the application of the braking effect according to variations of this time and also of voltage applied to the motor.
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公开(公告)号：DE2431973C3
公开(公告)日：1977-05-05
申请号：DE2431973
申请日：1974-07-03
Applicant: IBM
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公开(公告)号：DE2431973B2
公开(公告)日：1976-09-16
申请号：DE2431973
申请日：1974-07-03
Applicant: IBM
Inventor： BOWEN ARLEN JOHN , DICKSON LEROY DAVID , GORETZKI JEROME ARNOLD , HENDRICKSON KENNETH EARL , KING DONALD PAUL , KUEPER TERRANCE WAYNE , SODERSTROM RONALD LEE
Abstract: An omnidirectional optical scanner scans bar coded labels passed relative to a rectangular scan window with a plurality of interlaced X's whereby the labels are completely scanned irrespective of their orientation.
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公开(公告)号：DE2431973A1
公开(公告)日：1975-02-20
申请号：DE2431973
申请日：1974-07-03
Applicant: IBM
Inventor： BOWEN ARLEN JOHN , DICKSON LEROY DAVID , GORETZKI JEROME ARNOLD , HENDRICKSON KENNETH EARL , KING DONALD PAUL , KUEPER TERRANCE WAYNE , SODERSTROM RONALD LEE
Abstract: An omnidirectional optical scanner scans bar coded labels passed relative to a rectangular scan window with a plurality of interlaced X's whereby the labels are completely scanned irrespective of their orientation.
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