JPS4912708A - - Google Patents
Info
- Publication number
- JPS4912708A JPS4912708A JP47047905A JP4790572A JPS4912708A JP S4912708 A JPS4912708 A JP S4912708A JP 47047905 A JP47047905 A JP 47047905A JP 4790572 A JP4790572 A JP 4790572A JP S4912708 A JPS4912708 A JP S4912708A
- 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.)
- Granted
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
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Reduction Or Emphasis Of Bandwidth Of Signals (AREA)
- Transceivers (AREA)
- Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4790572A JPS535008B2 (en]) | 1972-05-15 | 1972-05-15 | |
| US359878A US3885111A (en) | 1972-05-15 | 1973-05-14 | Terminal equipment for lincompex telephone system |
| GB2303673A GB1431922A (en) | 1972-05-15 | 1973-05-15 | Terminal equipment for a telephone system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4790572A JPS535008B2 (en]) | 1972-05-15 | 1972-05-15 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS4912708A true JPS4912708A (en]) | 1974-02-04 |
| JPS535008B2 JPS535008B2 (en]) | 1978-02-23 |
Family
ID=12788388
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4790572A Expired JPS535008B2 (en]) | 1972-05-15 | 1972-05-15 |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US3885111A (en]) |
| JP (1) | JPS535008B2 (en]) |
| GB (1) | GB1431922A (en]) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56165427A (en) * | 1980-05-23 | 1981-12-19 | Matsushita Electric Ind Co Ltd | Radio receiving device |
| JPS56169943A (en) * | 1980-06-03 | 1981-12-26 | Matsushita Electric Ind Co Ltd | Transmitter in lincompex radio telephone set |
| US5841064A (en) * | 1995-05-26 | 1998-11-24 | Matsushita Electric Works, Ltd. | Peltier module |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4000369A (en) * | 1974-12-05 | 1976-12-28 | Rockwell International Corporation | Analog signal channel equalization with signal-in-noise embodiment |
| US4169219A (en) * | 1977-03-30 | 1979-09-25 | Beard Terry D | Compander noise reduction method and apparatus |
| JPS5985785A (ja) * | 1982-11-09 | 1984-05-17 | Tokyo Electric Co Ltd | タイプライタのコレクトリボン送り装置 |
| FR2537756B1 (fr) * | 1982-12-10 | 1985-11-08 | Thomson Csf | Dispositif de traitement de la parole pour equipements radioelectriques adaptes a la transmission et a la reception de la parole |
| US4457020A (en) * | 1982-12-27 | 1984-06-26 | Rockwell International Corporation | Signal processing device for use on radio links |
| GB2137055B (en) * | 1983-03-12 | 1986-11-12 | Marconi Avionics | Voice communication system |
| US4893099A (en) * | 1985-02-25 | 1990-01-09 | Waller Jr James K | Extended response dynamic noise reduction system |
| US4704727A (en) * | 1985-11-27 | 1987-11-03 | Beard Terry D | Low noise and distortion FM transmission system and method |
| US4726062A (en) * | 1985-12-11 | 1988-02-16 | Harris Corporation | Duplex hands-free communications circuit |
| US4959857A (en) * | 1988-12-28 | 1990-09-25 | At&T Bell Laboratories | Acoustic calibration arrangement for a voice switched speakerphone |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1283293B (de) * | 1964-09-10 | 1968-11-21 | Nippon Electric Co | Echounterdrueckungsschaltung fuer eine Weitverkehrsnachrichtenverbindung |
| FR1435022A (fr) * | 1965-02-17 | 1966-04-15 | Thomson Houston Comp Francaise | Perfectionnements aux systèmes de télécommunications |
| DE1912218A1 (de) * | 1968-05-17 | 1969-10-02 | Ames Automobielbedrijf N V | Schlafstelle fuer Automobile |
| US3596011A (en) * | 1969-03-18 | 1971-07-27 | Fairchild Sound Equipment Corp | Gain-switching circuits |
| US3780233A (en) * | 1971-09-20 | 1973-12-18 | Communications Satellite Corp | Adpative echo cancellers with compandors |
-
1972
- 1972-05-15 JP JP4790572A patent/JPS535008B2/ja not_active Expired
-
1973
- 1973-05-14 US US359878A patent/US3885111A/en not_active Expired - Lifetime
- 1973-05-15 GB GB2303673A patent/GB1431922A/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56165427A (en) * | 1980-05-23 | 1981-12-19 | Matsushita Electric Ind Co Ltd | Radio receiving device |
| JPS56169943A (en) * | 1980-06-03 | 1981-12-26 | Matsushita Electric Ind Co Ltd | Transmitter in lincompex radio telephone set |
| US5841064A (en) * | 1995-05-26 | 1998-11-24 | Matsushita Electric Works, Ltd. | Peltier module |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS535008B2 (en]) | 1978-02-23 |
| US3885111A (en) | 1975-05-20 |
| GB1431922A (en) | 1976-04-14 |