NL6912967A - - Google Patents
Info
- Publication number
- NL6912967A NL6912967A NL6912967A NL6912967A NL6912967A NL 6912967 A NL6912967 A NL 6912967A NL 6912967 A NL6912967 A NL 6912967A NL 6912967 A NL6912967 A NL 6912967A NL 6912967 A NL6912967 A NL 6912967A
- Authority
- NL
- Netherlands
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M9/00—Arrangements for interconnection not involving centralised switching
- H04M9/08—Two-way loud-speaking telephone systems with means for conditioning the signal, e.g. for suppressing echoes for one or both directions of traffic
- H04M9/10—Two-way loud-speaking telephone systems with means for conditioning the signal, e.g. for suppressing echoes for one or both directions of traffic with switching of direction of transmission by voice frequency
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NO336968A NO123134B (de) | 1968-08-29 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL6912967A true NL6912967A (de) | 1970-03-03 |
Family
ID=19879568
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL6912967A NL6912967A (de) | 1968-08-29 | 1969-08-25 |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US3660603A (de) |
| BE (1) | BE738074A (de) |
| CH (1) | CH499934A (de) |
| DK (1) | DK132640C (de) |
| FR (1) | FR2016608A1 (de) |
| GB (1) | GB1250380A (de) |
| NL (1) | NL6912967A (de) |
| SE (1) | SE351350B (de) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5242643B2 (de) * | 1973-10-18 | 1977-10-26 | ||
| US4028506A (en) * | 1973-12-12 | 1977-06-07 | Nippon Electric Company, Ltd. | Maximum value tracing circuit for digitized voice signals |
| JPS5411203B2 (de) * | 1974-05-02 | 1979-05-12 | ||
| US3970786A (en) * | 1974-06-27 | 1976-07-20 | Stromberg-Carlson Corporation | Loudspeaking telephone with improved receive sensitivity |
| US3963868A (en) * | 1974-06-27 | 1976-06-15 | Stromberg-Carlson Corporation | Loudspeaking telephone hysteresis and ambient noise control |
| US3953676A (en) * | 1974-12-12 | 1976-04-27 | Northern Electric Company, Limited | Digital control of a loudspeaking telephone system |
| US4025728A (en) * | 1976-01-29 | 1977-05-24 | Sava Jacobson | Speaker telephone |
| US4465902A (en) * | 1982-10-08 | 1984-08-14 | Zenith Electronics Corporation | Digital space phone system |
| US4542263A (en) * | 1984-03-07 | 1985-09-17 | Oki Electric Industry Co., Ltd. | Speech control circuit |
| US4980908A (en) * | 1989-05-30 | 1990-12-25 | Voicetek Corporation | Voice-switched gain control for voice communication equipment connected to telephone lines |
| JPH06338934A (ja) * | 1993-05-25 | 1994-12-06 | Exar Corp | 事象駆動型制御回路を有するスピーカーホーン |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB668858A (en) * | 1949-04-29 | 1952-03-26 | Telephone Mfg Co Ltd | Improvements in and relating to electrical communication systems |
| US3075045A (en) * | 1960-08-29 | 1963-01-22 | Bell Telephone Labor Inc | Speakerphone |
| US3113181A (en) * | 1960-11-25 | 1963-12-03 | Ericsson Telefon Ab L M | Amplifier arrangement |
| DE1281499B (de) * | 1966-03-23 | 1968-10-31 | Siemens Ag | Schaltungsanordnung fuer sprachgesteuerte Freisprechgeraete mit veraenderbarem Daempfungshub |
-
1969
- 1969-08-25 NL NL6912967A patent/NL6912967A/xx unknown
- 1969-08-26 DK DK457469A patent/DK132640C/da not_active IP Right Cessation
- 1969-08-26 SE SE11821/69A patent/SE351350B/xx unknown
- 1969-08-26 CH CH1294169A patent/CH499934A/de not_active IP Right Cessation
- 1969-08-26 GB GB1250380D patent/GB1250380A/en not_active Expired
- 1969-08-27 BE BE738074D patent/BE738074A/xx not_active IP Right Cessation
- 1969-08-28 US US853881A patent/US3660603A/en not_active Expired - Lifetime
- 1969-08-29 FR FR6929630A patent/FR2016608A1/fr active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| DE1942814A1 (de) | 1970-05-06 |
| US3660603A (en) | 1972-05-02 |
| DK132640B (da) | 1976-01-12 |
| SE351350B (de) | 1972-11-20 |
| DE1942814B2 (de) | 1976-10-14 |
| GB1250380A (de) | 1971-10-20 |
| CH499934A (de) | 1970-11-30 |
| DK132640C (da) | 1976-06-08 |
| BE738074A (de) | 1970-02-27 |
| FR2016608A1 (de) | 1970-05-08 |