NL7906957A - Luidsprekend telefoontoestel, welke voor zacht spreken is voorzien van een handapparaat. - Google Patents
Luidsprekend telefoontoestel, welke voor zacht spreken is voorzien van een handapparaat. Download PDFInfo
- Publication number
- NL7906957A NL7906957A NL7906957A NL7906957A NL7906957A NL 7906957 A NL7906957 A NL 7906957A NL 7906957 A NL7906957 A NL 7906957A NL 7906957 A NL7906957 A NL 7906957A NL 7906957 A NL7906957 A NL 7906957A
- Authority
- NL
- Netherlands
- Prior art keywords
- ultrasonic
- loudspeaker
- telephone
- channel
- pulses
- Prior art date
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
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Interconnected Communication Systems, Intercoms, And Interphones (AREA)
- Telephone Set Structure (AREA)
- Mobile Radio Communication Systems (AREA)
- Transducers For Ultrasonic Waves (AREA)
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NL7906957A NL7906957A (nl) | 1979-09-19 | 1979-09-19 | Luidsprekend telefoontoestel, welke voor zacht spreken is voorzien van een handapparaat. |
US06/183,865 US4396799A (en) | 1979-09-19 | 1980-09-04 | Combination of a loudspeaking telephone set and a hand set for soft speaking |
DE19803034597 DE3034597A1 (de) | 1979-09-19 | 1980-09-13 | Kombination eines lautsprechenden fernsprechapparats und eines handapparates fuer leises sprechen |
GB8029775A GB2059222B (en) | 1979-09-19 | 1980-09-15 | Loudspeaking telephone instrument |
FR8019845A FR2466147A1 (fr) | 1979-09-19 | 1980-09-15 | Combinaison d'un appareil telephonique a haut-parleur et d'un combine telephonique |
JP12732480A JPS5648750A (en) | 1979-09-19 | 1980-09-16 | Loudspeaker telephone set |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NL7906957A NL7906957A (nl) | 1979-09-19 | 1979-09-19 | Luidsprekend telefoontoestel, welke voor zacht spreken is voorzien van een handapparaat. |
NL7906957 | 1979-09-19 |
Publications (1)
Publication Number | Publication Date |
---|---|
NL7906957A true NL7906957A (nl) | 1981-03-23 |
Family
ID=19833867
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
NL7906957A NL7906957A (nl) | 1979-09-19 | 1979-09-19 | Luidsprekend telefoontoestel, welke voor zacht spreken is voorzien van een handapparaat. |
Country Status (6)
Country | Link |
---|---|
US (1) | US4396799A (de) |
JP (1) | JPS5648750A (de) |
DE (1) | DE3034597A1 (de) |
FR (1) | FR2466147A1 (de) |
GB (1) | GB2059222B (de) |
NL (1) | NL7906957A (de) |
Families Citing this family (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2547153A1 (fr) * | 1983-06-01 | 1984-12-07 | Constr Telephoniques | Procede et circuit de suppression d'oscillations entretenues par effet larsen dans une boucle comprenant un microphone et un haut-parleur |
DE3412111A1 (de) * | 1984-03-31 | 1985-10-10 | Standard Elektrik Lorenz Ag, 7000 Stuttgart | Schaltungsanordnung fuer eine sprachgesteuerte freisprecheinrichtung |
US4790971A (en) * | 1986-07-09 | 1988-12-13 | Trantek Inc. | Shuttle transfer system |
JPS63312757A (ja) * | 1987-06-15 | 1988-12-21 | Nec Corp | ハンズフリ−通話装置 |
JPH0198752A (ja) * | 1987-10-09 | 1989-04-17 | Nippon Denso Co Ltd | 無潤滑式送りねじ装置 |
JPH0251610A (ja) * | 1988-08-11 | 1990-02-21 | Tokyo Electric Co Ltd | ワイヤ駆動装置 |
JPH0388059U (de) * | 1989-12-26 | 1991-09-09 | ||
JPH0596605U (ja) * | 1992-05-29 | 1993-12-27 | エヌティエヌ株式会社 | ねじ駆動装置 |
US5410587A (en) * | 1993-03-01 | 1995-04-25 | Matsushita Communication Industrial Corp. Of America | Ultrasonic radiotelephone for an automobile |
US5701347A (en) * | 1994-06-23 | 1997-12-23 | Compaq Computer Corporation | Audio system for a personal computer |
US5633943A (en) * | 1994-09-09 | 1997-05-27 | Compaq Computer Corporation | Audio system for a personal computer |
US6501836B1 (en) * | 1994-09-09 | 2002-12-31 | Compaq Computer Corporation | Audio system for a personal computer |
US5729604A (en) * | 1996-03-14 | 1998-03-17 | Northern Telecom Limited | Safety switch for communication device |
GB2350969B (en) * | 1999-06-07 | 2003-11-05 | Ericsson Telefon Ab L M | Loudspeaker volume range control |
US6952672B2 (en) * | 2001-04-25 | 2005-10-04 | International Business Machines Corporation | Audio source position detection and audio adjustment |
DE10208096A1 (de) * | 2001-08-27 | 2003-04-10 | Siemens Ag | Mobiles Kommunikationsendgerät |
DE10235235A1 (de) * | 2002-08-01 | 2004-02-19 | Siemens Ag | Mobiltelefon mit einer Befestigungseinrichtung zur Befestigung des Mobiltelefons am Körper des Benutzers |
US9232071B2 (en) | 2011-12-16 | 2016-01-05 | Qualcomm Incorporated | Optimizing audio processing functions by dynamically compensating for variable distances between speaker(s) and microphone(s) in a mobile device |
US9654609B2 (en) * | 2011-12-16 | 2017-05-16 | Qualcomm Incorporated | Optimizing audio processing functions by dynamically compensating for variable distances between speaker(s) and microphone(s) in an accessory device |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3928723A (en) * | 1973-07-02 | 1975-12-23 | Kazuo Kai | Telephone set with built-in loudspeaker |
-
1979
- 1979-09-19 NL NL7906957A patent/NL7906957A/nl not_active Application Discontinuation
-
1980
- 1980-09-04 US US06/183,865 patent/US4396799A/en not_active Expired - Lifetime
- 1980-09-13 DE DE19803034597 patent/DE3034597A1/de not_active Withdrawn
- 1980-09-15 FR FR8019845A patent/FR2466147A1/fr not_active Withdrawn
- 1980-09-15 GB GB8029775A patent/GB2059222B/en not_active Expired
- 1980-09-16 JP JP12732480A patent/JPS5648750A/ja active Pending
Also Published As
Publication number | Publication date |
---|---|
DE3034597A1 (de) | 1981-04-09 |
FR2466147A1 (fr) | 1981-03-27 |
JPS5648750A (en) | 1981-05-02 |
GB2059222A (en) | 1981-04-15 |
US4396799A (en) | 1983-08-02 |
GB2059222B (en) | 1983-09-07 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
A1B | A search report has been drawn up | ||
A85 | Still pending on 85-01-01 | ||
BV | The patent application has lapsed |