公开(公告)号：US2932763A

公开(公告)日：1960-04-12

申请号：US47336054

申请日：1954-12-06

Applicant: NAT RES DEV

Inventor： CALLAND WILLIAMS FREDERIC ,  TOM KILBURN ,  RICHARD HOFFMAN GEORGE

IPC: G11C11/23

CPC classification number: G11C11/23

公开(公告)号：US2958074A

公开(公告)日：1960-10-25

申请号：US53045155

申请日：1955-08-25

Applicant: NAT RES DEV

Inventor： TOM KILBURN ,  RICHARD HOFFMAN GEORGE

IPC: G11C11/06 ,  G11C11/22

CPC classification number: G11C11/22 ,  G11C11/0605

公开(公告)号：US2947912A

公开(公告)日：1960-08-02

申请号：US72683258

申请日：1958-04-07

Applicant: NAT RES DEV

Inventor： RICHARD HOFFMAN GEORGE ,  HAYES CHELTENHAM ROY ERNEST

IPC: H01J29/18

CPC classification number: H01J29/18

公开(公告)号：US3389384A

公开(公告)日：1968-06-18

申请号：US51079265

申请日：1965-12-01

Applicant: NAT RES DEV

Inventor： FAULKNER JONES GLYN ,  RICHARD HOFFMAN GEORGE

IPC: G11C7/02 ,  G11C11/44

CPC classification number: G11C11/44 ,  Y10S505/84

公开(公告)号：US3288985A

公开(公告)日：1966-11-29

申请号：US22119962

申请日：1962-09-04

Applicant: NAT RES DEV

Inventor： RICHARD HOFFMAN GEORGE ,  LUMSDEN JONES PETER

IPC: G11C11/42 ,  H05B33/08

CPC classification number: G11C11/42 ,  H05B33/08 ,  Y02B20/325

Abstract: 977,170. Semipermanent stores. NATIONAL RESEARCH DEVELOPMENT CORPORATION. Sept. 3,1962 [Sept. 5,1961], No. 31926/61. Heading G4A. A matrix of electro-luminescent elements is masked by a card 2, a hole in the card representing a binary arc. To interrogate a particular position of the matrix a row is pulsed at frequency f i and a column at frequency f 2 . The element at the intersection of the row and column will emit light at the difference frequency f 3 , between f 1 and f 2 . The light is received at photo-multiplier 3 if the element is adjacent a hole in the card 2 and is converted to an electrical signal. At filters 4 and 5 the frequencies f 1 and f 2 are rejected and the difference frequency is amplified at circuit 6. At circuits 7 and 8 it is sampled and integrated to produce the data signal.

公开(公告)号：US2911627A

公开(公告)日：1959-11-03

申请号：US53045355

申请日：1955-08-25

Applicant: NAT RES DEV

Inventor： TOM KILBURN ,  RICHARD HOFFMAN GEORGE

IPC: G01R33/04 ,  G11B5/00 ,  G11B5/335 ,  G11C11/06

CPC classification number: G11C11/06085 ,  G01R33/045 ,  G11B5/00 ,  G11B5/335 ,  Y10T29/49069

公开(公告)号：US2888586A

公开(公告)日：1959-05-26

申请号：US47335954

申请日：1954-12-06

Applicant: NAT RES DEV

Inventor： CALLAND WILLIAMS FREDERIC ,  TOM KILBURN ,  RICHARD HOFFMAN GEORGE

IPC: H01J31/60

CPC classification number: H01J31/60

公开(公告)号：US2982947A

公开(公告)日：1961-05-02

申请号：US54814355

申请日：1955-11-21

Applicant: NAT RES DEV

Inventor： TOM KILBURN ,  RICHARD HOFFMAN GEORGE

IPC: G11B5/127 ,  G11C11/06 ,  H03K3/45

CPC classification number: H03K3/45 ,  G11B5/127 ,  G11C11/06078

公开(公告)号：US2978592A

公开(公告)日：1961-04-04

申请号：US58836156

申请日：1956-05-31

Applicant: NAT RES DEV

Inventor： TOM KILBURN ,  RICHARD HOFFMAN GEORGE ,  ANSON MACLEAN MICHAEL

IPC: H03K3/45 ,  H03K17/81

CPC classification number: H03K17/81 ,  H03K3/45