公开(公告)号：US3531778A

公开(公告)日：1970-09-29

申请号：US3531778D

申请日：1968-01-03

Applicant: IBM

Inventor： GARDNER PETER A E ,  HALLETT MICHAEL H

IPC: G11C11/411 ,  G11C15/04 ,  G11C19/28 ,  H03K3/012 ,  H03K3/037 ,  H03K3/288 ,  G11C11/40 ,  H03K3/286 ,  H03K4/82

CPC classification number: H03K3/288 ,  G11C11/4116 ,  G11C15/04 ,  G11C19/28 ,  H03K3/012 ,  H03K3/037

公开(公告)号：US3593304A

公开(公告)日：1971-07-13

申请号：US3593304D

申请日：1968-07-01

Applicant: IBM

Inventor： GARDNER PETER A E ,  HALLETT MICHAEL H

IPC: G06F7/50 ,  G06F7/505 ,  G11C11/411 ,  G11C11/414 ,  G11C11/416 ,  G11C19/28 ,  G06F7/06

CPC classification number: G06F7/505 ,  G06F2207/4822 ,  G11C11/4116 ,  G11C11/414 ,  G11C11/416 ,  G11C19/28

Abstract: This disclosure teaches a memory that performs logical operations by combining two or more words of data in a single storage location or on a storage signal carrying wire such that the data signals combine in ways that have logical significance. Threshold logic circuits are connected with the memory signal wires to propagate carries for addition or subtraction.

公开(公告)号：US3609702A

公开(公告)日：1971-09-28

申请号：US3609702D

申请日：1968-10-23

Applicant: IBM

Inventor： GARDNER PETER A E ,  HALLETT MICHAEL H ,  TITMAN PETER J

IPC: G11C15/04 ,  G11C15/00

CPC classification number: G11C15/04

Abstract: This invention relates to an associative memory for the storage of digital data in which each word location of the memory is provided with two or more match triggers. Mans is provided for registering matches or mismatches in a selected trigger and for controlling operations on the memory in response to the contents of a selected trigger. Several operations are described which use the plural triggers.

公开(公告)号：US3585605A

公开(公告)日：1971-06-15

申请号：US3585605D

申请日：1969-05-28

Applicant: IBM

Inventor： GARDNER PETER A E ,  HALLETT MICHAEL H ,  LLEWELYN ROGER J ,  TITMAN PETER J

IPC: G06F9/26 ,  G06F9/28 ,  G11C15/04 ,  G11C15/00

CPC classification number: G06F9/28 ,  G06F9/26 ,  G06F9/261 ,  G11C15/04

Abstract: Three associative stores are interconnected to provide a data processor. A control store contains a microprogram and it emits tags that select a function table in a working store and data from a local store, the data being applied to the working store as a look-up argument. The local store may also hold a macroprogram. Two of the stores are interconnected so that a tag emitted by one is used to address the other and vice versa. A nonassociative main store may be connected to the local store.

公开(公告)号：US3566367A

公开(公告)日：1971-02-23

申请号：US3566367D

申请日：1969-02-20

Applicant: IBM

Inventor： GARDNER PETER A E ,  HALLETT MICHAEL H ,  TITMAN PETER J

IPC: G01R19/00 ,  G11C15/04 ,  G11C15/00

CPC classification number: G11C15/04 ,  G01R19/0038

Abstract: THIS INVENTION PROVIDES AN ASSOCIATIVE MEMORY (OR OTHER ORDERED ARRAY OF ELECTRONIC CIRCUITS) WITH MEANS FOR STEPPING FROM WORD TO WORD THROUGH THE ARRAY FOR CERTAIN OPERATIONS AND A NOVEL CIRCUIT FOR BYPASSING DEFECTIVE WORDS. AN ARRAY WITH DEFECTIVE COMPONENTS REMAINS OPERABLE AT A REDUCED CAPACITY.

公开(公告)号：US3504351A

公开(公告)日：1970-03-31

申请号：US3504351D

申请日：1968-01-02

Applicant: IBM

Inventor： GARDNER PETER A E ,  HALLETT MICHAEL H

IPC: G11C8/16 ,  G11C11/411 ,  G11C5/06 ,  H03K23/08

CPC classification number: G11C11/411 ,  G11C8/16

公开(公告)号：CA890618A

公开(公告)日：1972-01-11

申请号：CA890618D

Applicant: IBM

Inventor： GARDNER PETER A E ,  HALLETT MICHAEL H ,  TITMAN PETER J

公开(公告)号：CA876952A

公开(公告)日：1971-07-27

申请号：CA876952D

Applicant: IBM

Inventor： GARDNER PETER A E ,  TITMAN PETER J ,  LLEWELYN ROGER J ,  HALLETT MICHAEL H

公开(公告)号：CA1072205A

公开(公告)日：1980-02-19

申请号：CA240571

申请日：1975-11-26

Applicant: IBM

Inventor： GARDNER PETER A E

IPC: C25D3/06 ,  C25D3/56 ,  G11B17/02

Abstract: DATA STORAGE APPARATUS Data storage apparatus, as described herein, comprises rotatable storage disks each having a plurality of servo tracks recorded in a servo region on one surface; a servo transducer is moveable by an actuator over the servo tracks under control of signals from an external control unit, and data transducers are ganged for movement to the servo transducer and located over data regions on the disks containing data tracks the position of which are defined by the position of corresponding associated servo tracks. The servo transducer and the actuator form part of a closed loop servo system which derives position error signals from the servo tracks indicative of displacement of the data transducers from data tracks. The position error signals are used during track following phases of the track access operations to cause the closed loop servo system to energize the actuator and move the data transducers in a direction tending to nullify the displacement and locate the transducers over a target track. The apparatus further includes a capacitor connectable by means of a switch to function as an integrator in the closed loop servo system. The switch is controlled during an access operation so as to include the integrator in the servo loop at a time to increase the d.c. gain of the loop during the track following phase at the end of the track access operation.

公开(公告)号：CA874092A

公开(公告)日：1971-06-22

申请号：CA874092D

Applicant: IBM

Inventor： GARDNER PETER A E ,  TITMAN PETER J ,  HALLETT MICHAEL H