FR2839839B1 - CAR HANDS-FREE TELEPHONE ADAPTER, ESPECIALLY FOR FIRST INSTALLATION, INCLUDING A CIRCUIT FOR ADAPTING THE LOGICAL LEVELS EXCHANGED WITH THE TELEPHONE - Google Patents
CAR HANDS-FREE TELEPHONE ADAPTER, ESPECIALLY FOR FIRST INSTALLATION, INCLUDING A CIRCUIT FOR ADAPTING THE LOGICAL LEVELS EXCHANGED WITH THE TELEPHONEInfo
- Publication number
- FR2839839B1 FR2839839B1 FR0205918A FR0205918A FR2839839B1 FR 2839839 B1 FR2839839 B1 FR 2839839B1 FR 0205918 A FR0205918 A FR 0205918A FR 0205918 A FR0205918 A FR 0205918A FR 2839839 B1 FR2839839 B1 FR 2839839B1
- Authority
- FR
- France
- Prior art keywords
- telephone
- adapting
- exchanged
- installation
- circuit
- Prior art date
- 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.)
- Expired - Fee Related
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/60—Substation equipment, e.g. for use by subscribers including speech amplifiers
- H04M1/6033—Substation equipment, e.g. for use by subscribers including speech amplifiers for providing handsfree use or a loudspeaker mode in telephone sets
- H04M1/6041—Portable telephones adapted for handsfree use
- H04M1/6075—Portable telephones adapted for handsfree use adapted for handsfree use in a vehicle
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
- H04B1/3827—Portable transceivers
- H04B1/3877—Arrangements for enabling portable transceivers to be used in a fixed position, e.g. cradles or boosters
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/60—Substation equipment, e.g. for use by subscribers including speech amplifiers
- H04M1/6033—Substation equipment, e.g. for use by subscribers including speech amplifiers for providing handsfree use or a loudspeaker mode in telephone sets
- H04M1/6041—Portable telephones adapted for handsfree use
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Mobile Radio Communication Systems (AREA)
- Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)
- Telephone Function (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0205918A FR2839839B1 (en) | 2002-05-14 | 2002-05-14 | CAR HANDS-FREE TELEPHONE ADAPTER, ESPECIALLY FOR FIRST INSTALLATION, INCLUDING A CIRCUIT FOR ADAPTING THE LOGICAL LEVELS EXCHANGED WITH THE TELEPHONE |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0205918A FR2839839B1 (en) | 2002-05-14 | 2002-05-14 | CAR HANDS-FREE TELEPHONE ADAPTER, ESPECIALLY FOR FIRST INSTALLATION, INCLUDING A CIRCUIT FOR ADAPTING THE LOGICAL LEVELS EXCHANGED WITH THE TELEPHONE |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2839839A1 FR2839839A1 (en) | 2003-11-21 |
FR2839839B1 true FR2839839B1 (en) | 2004-07-09 |
Family
ID=29286471
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR0205918A Expired - Fee Related FR2839839B1 (en) | 2002-05-14 | 2002-05-14 | CAR HANDS-FREE TELEPHONE ADAPTER, ESPECIALLY FOR FIRST INSTALLATION, INCLUDING A CIRCUIT FOR ADAPTING THE LOGICAL LEVELS EXCHANGED WITH THE TELEPHONE |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR2839839B1 (en) |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FI940049A0 (en) * | 1994-01-05 | 1994-01-05 | Nokia Mobile Phones Ltd | Anordning Foer anpassning av signalnivaon i en mobil telefon |
DE19715596A1 (en) * | 1997-04-15 | 1998-10-22 | Pvt Praezisions Verbindungstec | Handsfree unit for connection to mobile telephone |
DE20120820U1 (en) * | 2001-12-21 | 2002-03-28 | Beijing Detianquan Machine-electron Equipments Co., Ltd., Beijing | Universal mobile phone adjustment system for hands-free telephoning in automobiles |
-
2002
- 2002-05-14 FR FR0205918A patent/FR2839839B1/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
FR2839839A1 (en) | 2003-11-21 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |
Effective date: 20090119 |