公开(公告)号：US3138789A

公开(公告)日：1964-06-23

申请号：US24121062

申请日：1962-11-30

Applicant: IBM

Inventor： PUGH EMERSON W

IPC: G11B5/62 ,  G11C8/00 ,  G11C19/08 ,  G11C21/02 ,  H01F10/08 ,  H03H9/30 ,  H03K17/84

CPC classification number: H03K17/84 ,  G11B5/62 ,  G11C8/005 ,  G11C19/0808 ,  G11C19/0858 ,  G11C21/026 ,  H01F10/08 ,  H03H9/30

公开(公告)号：US3387291A

公开(公告)日：1968-06-04

申请号：US36417264

申请日：1964-05-01

Applicant: IBM

Inventor： PUGH EMERSON W

IPC: G11C7/00 ,  G11C7/02 ,  G11C11/14 ,  G11C11/21 ,  H03K5/04

CPC classification number: G11C11/21 ,  G11C7/00 ,  G11C7/02 ,  G11C11/14 ,  H03K5/04

公开(公告)号：US3516079A

公开(公告)日：1970-06-02

申请号：US3516079D

申请日：1966-06-29

Applicant: IBM

Inventor： PUGH EMERSON W

IPC: G11C7/00 ,  G11C11/14

CPC classification number: G11C7/00 ,  G11C11/14

公开(公告)号：US3071756A

公开(公告)日：1963-01-01

申请号：US10218461

申请日：1961-04-11

Applicant: IBM

Inventor： PUGH EMERSON W

IPC: G11C7/00 ,  G11C11/04 ,  G11C11/14 ,  H01F10/08

CPC classification number: G11C11/14 ,  G11C7/00 ,  G11C11/04 ,  H01F10/08

公开(公告)号：FR2396385A1

公开(公告)日：1979-01-26

申请号：FR7817713

申请日：1978-06-07

Applicant: IBM

Inventor： COHEN MITCHELL S ,  PUGH EMERSON W

IPC: G11C11/14 ,  G11C19/08

Abstract: These improved current controlled transfer switches are particularly useful for changing the propagation path of very small bubble domains without requiring large amounts of transfer current. The underlying principle is that the transfer operation occurs when the magnitude of the magnetic drive field used to move bubble domains has diminished to a small value, or is zero. This means that the magnetic field due to current in the switch does not have to overcome the effect of the drive field and therefore can be very small while still being effective. This is termed a "start/stop" operation and in one embodiment, current-assisted transfer is achieved by utilizing a change in the sequence of the magnetic drive field (generally an in-plane rotating field) at the time of transfer. In another embodiment, a continuous "three-quadrant" magnetic drive field is used instead of the customary 360 DEG rotating drive field. This three-quadrant field cycle is also the normal cycle for bubble storage operations and bubble motion elsewhere in the magnetic circuit is not disturbed by the switching operation because all devices are designed to operate with only one type of drive field cycle, which is the three-quadrant cycle. Switches operating in accordance with these principles do not have to have a particular design; in fact, several different designs are illustrated.

公开(公告)号：CA1124400A

公开(公告)日：1982-05-25

申请号：CA300434

申请日：1978-04-04

Applicant: IBM

Inventor： COHEN MITCHELL S ,  PUGH EMERSON W

IPC: G11C11/14 ,  G11C19/08

Abstract: IMPROVED BUBBLE DOMAIN TRANSFER SWITCHES These improved current controlled transfer switches are particularly useful for changing the propagation path of very small bubble domains without requiring large amounts of transfer current. The underlying principle is that the transfer operation occurs when the magnitude of the magnetic drive field used to move bubble domains has diminished to a small value, or is zero. This means that the magnetic field due to current in the switch does not have to overcome the effect of the drive field and therefore can be very small while still being effective. This is termed a "start/stop" operation and in one embodiment, current-assisted transfer is achieved by utilizing a change in the sequence of the magnetic drive field (generally an in-plane rotating field) at the time of transfer. In another embodiment, a continuous "three-quadrant" magnetic drive field is used instead of the customary 360.degree. rotating drive field. This threequadrant field cycle is also the normal cycle for bubble storage operations and bubble motion elsewhere in the magnetic circuit is not disturbed by the switching operation because all devices are designed to operate with only one type of drive field cycle, which is the three-quadrant cycle. Switches operating in accordance with these principles do not have to have a particular design; in fact, several different designs are illustrated.

公开(公告)号：CA1035039A

公开(公告)日：1978-07-18

申请号：CA213222

申请日：1974-11-07

Applicant: IBM

Inventor： PUGH EMERSON W

IPC: G11C11/14 ,  G11C19/08 ,  H01F

Abstract: Gapless, single-sided propagation structures are provided for implementing the continuous movement of magnetic bubble domains in both straight lines and around reverse direction turns under the control of a reorienting in-plane field. One embodiment comprises a closed loop of open-sided, joined hexagonal patterns having traps and dead end legs at the joined corners to cause transfer from one hexagonal pattern to the next, thus implementing continuous circulation around the loop and preventing backtracking. Another embodiment employs straight, parallel strips joined at their ends to form a loop. Bubble movement is promoted by a series of angled strip legs intersecting the main strips to provide sequentially advancing magnetic poles as the field vector rotates.

公开(公告)号：DE1190986B

公开(公告)日：1965-04-15

申请号：DEJ0021570

申请日：1962-04-06

Applicant: IBM

Inventor： PUGH EMERSON W

IPC: G11C7/00 ,  G11C11/04 ,  G11C11/14 ,  H01F10/08

Abstract: Magnetic thin film storage elements having a biaxial anisotropic characteristic may be grown epitaxially on NaCl, Mg O or other similar crystal materials, and, as described, a film of 80% Ni, 20% Fe is deposited by evaporation in a temperature range of 250-400 DEG C. Use of NaCl is recommended as the films after formation may be floated off in water and picked up on previously prepared strip winding arrays (see Division H3).

公开(公告)号：CA800739A

公开(公告)日：1968-12-03

申请号：CA800739D

Applicant: IBM

Inventor： PUGH EMERSON W

公开(公告)号：CA745730A

公开(公告)日：1966-11-01

申请号：CA745730D

Applicant: IBM

Inventor： PUGH EMERSON W