公开(公告)号：US3618036A

公开(公告)日：1971-11-02

申请号：US3618036D

申请日：1968-12-18

Applicant: BELL TELEPHONE LABOR INC

Inventor： CARBREY ROBERT L

IPC: H04L25/03 ,  G06F9/00

CPC classification number: H04L25/03038

Abstract: A circuit is described for coordinating the addressing of a plurality of tap multipliers in a transversal filter, which is employed as a pre-equalizer. with a received data stream. The data stream updates information stored in a memory. The updated information is applied to the tap multipliers at a rate eight times the rate that the data stream updates the memory. A memory and tap address counter, operating at a rate that the information is applied to the taps is synchronized with the updating data stream by causing the address counter to slip one count for each cycle thereof.

公开(公告)号：US3543264A

公开(公告)日：1970-11-24

申请号：US3543264D

申请日：1967-06-23

Applicant: BELL TELEPHONE LABOR INC

Inventor： CARBREY ROBERT L

IPC: H03K17/62 ,  H03M1/00 ,  H03K13/04

CPC classification number: H03M1/00 ,  H03K17/6257 ,  H03M1/08

公开(公告)号：US3239765A

公开(公告)日：1966-03-08

申请号：US31152663

申请日：1963-09-25

Applicant: BELL TELEPHONE LABOR INC

Inventor： CARBREY ROBERT L

IPC: G06F7/58 ,  G06F7/68 ,  H03K3/30 ,  H03K5/156 ,  H03K21/00 ,  H03K23/00

CPC classification number: G06F7/58 ,  G06F7/68 ,  H03K3/30 ,  H03K5/156 ,  H03K21/00 ,  H03K23/002

公开(公告)号：US2516752A

公开(公告)日：1950-07-25

申请号：US5208848

申请日：1948-09-30

Applicant: BELL TELEPHONE LABOR INC

Inventor： CARBREY ROBERT L

IPC: H01J31/06 ,  H03M1/00 ,  H04B14/04

CPC classification number: H01J31/06 ,  H03M1/00 ,  H03M1/22 ,  H04B14/044

公开(公告)号：US2889409A

公开(公告)日：1959-06-02

申请号：US63180656

申请日：1956-12-31

Applicant: BELL TELEPHONE LABOR INC

Inventor： CARBREY ROBERT L

IPC: H03M1/00

CPC classification number: H03M1/58

公开(公告)号：US2806997A

公开(公告)日：1957-09-17

申请号：US57456256

申请日：1956-03-28

Applicant: BELL TELEPHONE LABOR INC

Inventor： CARBREY ROBERT L

IPC: H03M1/00

CPC classification number: H03M1/504 ,  H03M1/182

公开(公告)号：US2755459A

公开(公告)日：1956-07-17

申请号：US27947952

申请日：1952-03-29

Applicant: BELL TELEPHONE LABOR INC

Inventor： CARBREY ROBERT L

IPC: H03M5/00 ,  H03M7/16

CPC classification number: H03M7/16 ,  H03M5/00

公开(公告)号：US2602158A

公开(公告)日：1952-07-01

申请号：US7534949

申请日：1949-02-09

Applicant: BELL TELEPHONE LABOR INC

Inventor： CARBREY ROBERT L

IPC: H01J31/06 ,  H03M1/00

CPC classification number: H03M1/00 ,  H01J31/06 ,  H03M1/22

公开(公告)号：US2549422A

公开(公告)日：1951-04-17

申请号：US6952849

申请日：1949-01-06

Applicant: BELL TELEPHONE LABOR INC

Inventor： CARBREY ROBERT L

IPC: H03M1/00

CPC classification number: H03M1/00 ,  H03M1/22

公开(公告)号：US3651515A

公开(公告)日：1972-03-21

申请号：US3651515D

申请日：1969-11-25

Applicant: BELL TELEPHONE LABOR INC

Inventor： CARBREY ROBERT L

IPC: H03M1/00 ,  H03K13/02

CPC classification number: H03M1/124

Abstract: A self-companding pulse code modulation converter employs switched gain ratio of an operational amplifier. Capacitors, weighted to correspond to the quantizing characteristic, are switched between the input and feedback circuits of an operational amplifier to change the gain ratio.

Abstract translation: 自分压脉冲编码调制转换器采用运算放大器的开关增益比。 加权以对应于量化特性的电容器在运算放大器的输入和反馈电路之间切换以改变增益比。