JPS507887B1 - - Google Patents
Info
- Publication number
- JPS507887B1 JPS507887B1 JP44048693A JP4869369A JPS507887B1 JP S507887 B1 JPS507887 B1 JP S507887B1 JP 44048693 A JP44048693 A JP 44048693A JP 4869369 A JP4869369 A JP 4869369A JP S507887 B1 JPS507887 B1 JP S507887B1
- Authority
- JP
- Japan
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B3/00—Line transmission systems
- H04B3/02—Details
- H04B3/20—Reducing echo effects or singing; Opening or closing transmitting path; Conditioning for transmission in one direction or the other
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J3/00—Time-division multiplex systems
- H04J3/02—Details
- H04J3/04—Distributors combined with modulators or demodulators
- H04J3/047—Distributors with transistors or integrated circuits
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
- Data Exchanges In Wide-Area Networks (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US73892468A | 1968-06-21 | 1968-06-21 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS507887B1 true JPS507887B1 (ja) | 1975-03-31 |
Family
ID=24970054
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP44048693A Pending JPS507887B1 (ja) | 1968-06-21 | 1969-06-21 |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US3562448A (ja) |
| JP (1) | JPS507887B1 (ja) |
| BE (1) | BE734896A (ja) |
| DE (1) | DE1931239A1 (ja) |
| FR (1) | FR2011448A1 (ja) |
| GB (1) | GB1216352A (ja) |
| SE (1) | SE351093B (ja) |
Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3673355A (en) * | 1970-09-02 | 1972-06-27 | Bell Telephone Labor Inc | Common control digital echo suppression |
| US3896273A (en) * | 1971-01-08 | 1975-07-22 | Communications Satellite Corp | Digital echo suppressor |
| JPS5631774B2 (ja) * | 1971-08-13 | 1981-07-23 | ||
| US3821494A (en) * | 1972-07-14 | 1974-06-28 | Ibm | Digital echo suppressor with direct table look up control by delta coded signals |
| US4051332A (en) * | 1973-08-20 | 1977-09-27 | Nippon Telegraph And Telephone Public Corporation | Multiplex digital echo suppression system |
| JPS5317451B2 (ja) * | 1973-08-20 | 1978-06-08 | ||
| FR2255762B1 (ja) * | 1973-12-21 | 1976-07-23 | Ibm France | |
| US3906172A (en) * | 1974-04-22 | 1975-09-16 | Gen Electric | Digital echo suppressor |
| US3937907A (en) * | 1974-06-13 | 1976-02-10 | Communications Satellite Corporation | Digital echo suppressor |
| US4005276A (en) * | 1975-03-20 | 1977-01-25 | International Business Machines Corporation | Digital voice signaling with digital echo detection and voice activity compression used to cancel echo |
| US4029912A (en) * | 1975-12-10 | 1977-06-14 | Bell Telephone Laboratories, Incorporated | Common control digital echo suppressor |
| US4088851A (en) * | 1976-04-28 | 1978-05-09 | Wescom, Inc. | Digital echo suppressor |
| US5022074A (en) * | 1985-07-01 | 1991-06-04 | Rockwell International Corporation | Digital echo suppressor |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3305646A (en) * | 1963-11-13 | 1967-02-21 | Bell Telephone Labor Inc | Echo suppressor with improved break-in circuitry |
-
1968
- 1968-06-21 US US738924A patent/US3562448A/en not_active Expired - Lifetime
-
1969
- 1969-06-10 SE SE08223/69A patent/SE351093B/xx unknown
- 1969-06-20 FR FR6920867A patent/FR2011448A1/fr active Pending
- 1969-06-20 DE DE19691931239 patent/DE1931239A1/de not_active Withdrawn
- 1969-06-20 BE BE734896D patent/BE734896A/xx not_active IP Right Cessation
- 1969-06-21 JP JP44048693A patent/JPS507887B1/ja active Pending
- 1969-06-23 GB GB31568/69A patent/GB1216352A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| SE351093B (ja) | 1972-11-13 |
| FR2011448A1 (ja) | 1970-02-27 |
| BE734896A (ja) | 1969-12-01 |
| GB1216352A (en) | 1970-12-23 |
| US3562448A (en) | 1971-02-09 |
| DE1931239A1 (de) | 1970-01-02 |