公开(公告)号：US2700118A

公开(公告)日：1955-01-18

申请号：US25889251

申请日：1951-11-29

Applicant: PHILIPS CORP

Inventor： HUGHES RAY C ,  COPPOLA PATRICK P ,  RITTNER EDMUND S

IPC: H01J1/28

CPC classification number: H01J1/28 ,  Y10T428/12042

公开(公告)号：US2873303A

公开(公告)日：1959-02-10

申请号：US46601054

申请日：1954-11-01

Applicant: PHILIPS CORP

Inventor： RITTNER EDMUND S

IPC: H01L31/0216 ,  H01L31/0304

CPC classification number: H01L31/0304 ,  H01L31/02168 ,  Y02E10/544

公开(公告)号：US2749471A

公开(公告)日：1956-06-05

申请号：US17941150

申请日：1950-08-14

Applicant: PHILIPS CORP

Inventor： RITTNER EDMUND S

IPC: H01J40/00

CPC classification number: H01J40/00

公开(公告)号：US3584146A

公开(公告)日：1971-06-08

申请号：US3584146D

申请日：1968-11-21

Applicant: PHILIPS CORP

Inventor： CATH PIETER G ,  STUPP EDWARD H ,  RITTNER EDMUND S

IPC: H04N5/217 ,  H04N5/232 ,  H04N5/353 ,  H04N5/361 ,  H04N5/38

CPC classification number: H04N5/217

Abstract: Dark current compensation in a video imaging tube is accomplished by virtue of establishing a dark current level and subtracting it from the video signal. The dark current level can be established by overscanning or scanning a nonexposed area of the image tube or by means of a compensating video sensing segment positioned directly on the actual video sensing segment. In a silicon target tube, the compensating junction can consist of a conveniently sized assembly or mosaiced junctions similar to those of the target, and connected in parallel with the target. The subtraction signal can then be placed in a sample and hold circuit, averaged and subtracted from the actual video signal during a successive scan.

公开(公告)号：US2727968A

公开(公告)日：1955-12-20

申请号：US34173253

申请日：1953-01-29

Applicant: PHILIPS CORP

Inventor： RITTNER EDMUND S ,  SAMUEL FINE

IPC: G01N25/56

CPC classification number: G01N25/56

公开(公告)号：US3415989A

公开(公告)日：1968-12-10

申请号：US52495166

申请日：1966-02-03

Applicant: PHILIPS CORP

Inventor： LEVENTHAL EDWIN A ,  NEUMARK GERTRUDE F ,  RITTNER EDMUND S

IPC: G01T1/20 ,  G01T1/202 ,  H01L31/00

CPC classification number: G01T1/202 ,  G01T1/2006 ,  G01T1/2018 ,  H01L31/00 ,  Y10S148/072

公开(公告)号：US3402331A

公开(公告)日：1968-09-17

申请号：US56964566

申请日：1966-08-02

Applicant: PHILIPS CORP

Inventor： RITTNER EDMUND S

IPC: H01L25/16 ,  H01L27/06 ,  H01L29/00 ,  H01L49/02 ,  H05K1/00 ,  H05K1/16

CPC classification number: H05K1/16 ,  H01L25/16 ,  H01L27/0688 ,  H01L29/00 ,  H01L49/02 ,  H01L2924/0002 ,  H01L2924/09701 ,  H05K1/0393 ,  H05K2201/10166 ,  H01L2924/00

公开(公告)号：US2803779A

公开(公告)日：1957-08-20

申请号：US27448252

申请日：1952-02-07

Applicant: PHILIPS CORP

Inventor： RITTNER EDMUND S ,  GRACE FRANK E ,  SAMUEL FINE ,  BEUTEL GEORGE A

IPC: H01J31/04

CPC classification number: H01J31/04