公开(公告)号：US2883562A

公开(公告)日：1959-04-21

申请号：US42596454

申请日：1954-04-27

Applicant: BELL TELEPHONE LABOR INC

Inventor： GRAHAM ROBERT E ,  KRETZMER ERNEST R

IPC: G01S7/12 ,  H03K5/05

CPC classification number: H03K5/05 ,  G01S7/12

公开(公告)号：US2850574A

公开(公告)日：1958-09-02

申请号：US54451655

申请日：1955-11-02

Applicant: BELL TELEPHONE LABOR INC

Inventor： KRETZMER ERNEST R

IPC: H04N7/26

CPC classification number: H04N19/30

公开(公告)号：US3508172A

公开(公告)日：1970-04-21

申请号：US3508172D

申请日：1968-01-23

Applicant: BELL TELEPHONE LABOR INC

Inventor： KRETZMER ERNEST R ,  PORT ERICH ,  RUDIN HARRY R JR

IPC: H03H15/00 ,  H04B3/10 ,  H04L25/03 ,  H04B3/04 ,  H04B3/06 ,  H04B3/14

CPC classification number: H04L25/03038

公开(公告)号：US3421149A

公开(公告)日：1969-01-07

申请号：US3421149D

申请日：1966-04-06

Applicant: BELL TELEPHONE LABOR INC

Inventor： KRETZMER ERNEST R ,  MECKLENBURG PAUL ,  RICE DONALD W ,  RYAN WILLIAM

IPC: G11C19/10 ,  G11B13/00

CPC classification number: G11C19/10

公开(公告)号：US3035257A

公开(公告)日：1962-05-15

申请号：US84310259

申请日：1959-09-29

Applicant: BELL TELEPHONE LABOR INC

Inventor： KRETZMER ERNEST R

IPC: H03M7/16

CPC classification number: H03M7/16

公开(公告)号：US2946851A

公开(公告)日：1960-07-26

申请号：US57302256

申请日：1956-03-21

Applicant: BELL TELEPHONE LABOR INC

Inventor： KRETZMER ERNEST R

IPC: H04N7/26

CPC classification number: H04N19/30

公开(公告)号：US2911463A

公开(公告)日：1959-11-03

申请号：US70597657

申请日：1957-12-30

Applicant: BELL TELEPHONE LABOR INC

Inventor： KRETZMER ERNEST R

IPC: H04N1/04 ,  H04N3/30

CPC classification number: H04N3/30 ,  H04N2201/0458

公开(公告)号：US2909601A

公开(公告)日：1959-10-20

申请号：US65739457

申请日：1957-05-06

Applicant: BELL TELEPHONE LABOR INC

Inventor： FLECKENSTEIN WILLIAM O ,  KRETZMER ERNEST R ,  MICHEL WALTER S

IPC: H04N1/419

CPC classification number: H04N1/419

公开(公告)号：US3581111A

公开(公告)日：1971-05-25

申请号：US3581111D

申请日：1968-09-16

Applicant: BELL TELEPHONE LABOR INC

Inventor： KRETZMER ERNEST R

IPC: G06F7/60 ,  G06G7/184 ,  H03M3/02 ,  G06G7/18

CPC classification number: G06G7/184 ,  G06F7/602 ,  H03M3/022

Abstract: An integrator circuit is described in which a received signal is added to a feedback signal. The feedback signal is generated by delaying the sum of the received signal and the feedback signal. The amplitude and DC levels of the feedback signal are controlled by circuits which sense the deviation of the sum signal from predetermined levels.

公开(公告)号：US3479468A

公开(公告)日：1969-11-18

申请号：US3479468D

申请日：1967-03-10

Applicant: BELL TELEPHONE LABOR INC

Inventor： KRETZMER ERNEST R

IPC: H04L5/14 ,  H04M1/19

CPC classification number: H04L5/1423