DE3885803T3 - Schnurloses Telefonsystem. - Google Patents
Schnurloses Telefonsystem.Info
- Publication number
- DE3885803T3 DE3885803T3 DE3885803T DE3885803T DE3885803T3 DE 3885803 T3 DE3885803 T3 DE 3885803T3 DE 3885803 T DE3885803 T DE 3885803T DE 3885803 T DE3885803 T DE 3885803T DE 3885803 T3 DE3885803 T3 DE 3885803T3
- Authority
- DE
- Germany
- Prior art keywords
- phone system
- cordless phone
- cordless
- phone
- 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
- H04M1/68—Circuit arrangements for preventing eavesdropping
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/72—Mobile telephones; Cordless telephones, i.e. devices for establishing wireless links to base stations without route selection
- H04M1/725—Cordless telephones
- H04M1/72502—Cordless telephones with one base station connected to a single line
- H04M1/72505—Radio link set-up procedures
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62173325A JP2888517B2 (ja) | 1987-07-10 | 1987-07-10 | コードレス電話装置 |
Publications (3)
Publication Number | Publication Date |
---|---|
DE3885803D1 DE3885803D1 (de) | 1994-01-05 |
DE3885803T2 DE3885803T2 (de) | 1994-04-28 |
DE3885803T3 true DE3885803T3 (de) | 1999-11-04 |
Family
ID=15958340
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE3885803T Expired - Fee Related DE3885803T3 (de) | 1987-07-10 | 1988-07-07 | Schnurloses Telefonsystem. |
Country Status (6)
Country | Link |
---|---|
US (1) | US4939769A (de) |
EP (1) | EP0298749B2 (de) |
JP (1) | JP2888517B2 (de) |
KR (1) | KR910004061B1 (de) |
AU (1) | AU600586B2 (de) |
DE (1) | DE3885803T3 (de) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6167278A (en) * | 1986-10-22 | 2000-12-26 | Nilssen; Ole K. | Combination cordless-cellular telephone system |
JP2557408B2 (ja) * | 1987-09-14 | 1996-11-27 | 株式会社東芝 | 無線通信装置 |
JP2892388B2 (ja) * | 1989-08-08 | 1999-05-17 | 株式会社東芝 | 無線電話装置 |
FR2691865B1 (fr) * | 1992-05-27 | 2001-11-16 | Jacques Lewiner | Perfectionnements aux installations téléphoniques comprenant deux combinés dont un sans fil. |
JPH08163636A (ja) * | 1994-12-09 | 1996-06-21 | Sony Corp | デジタルコードレス電話装置 |
WO1999057922A1 (en) * | 1998-05-01 | 1999-11-11 | Sanserino Jon J | Speakerphone with remote microphone and feedback controlling circuit |
Family Cites Families (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3941943A (en) * | 1974-08-08 | 1976-03-02 | International Telephone And Telegraph Corporation | Privacy circuit for key telephone systems |
US4075434A (en) * | 1976-03-25 | 1978-02-21 | San/Bar Corporation | Key telephone privacy exclusion apparatus |
US4218590A (en) * | 1979-01-29 | 1980-08-19 | Crest Industries, Inc. | Key telephone system having automatic exclusion circuit for line privacy |
US4291199A (en) * | 1979-03-28 | 1981-09-22 | Bell Telephone Laboratories, Incorporated | Communication system tracking arrangement |
US4468539A (en) | 1982-12-16 | 1984-08-28 | Gte Automatic Electric Inc. | Wireless telephone system with intercom signalling and auxiliary station |
US4639549A (en) * | 1984-01-31 | 1987-01-27 | Sony Corporation | Cordless telephone |
US4640987A (en) | 1984-04-23 | 1987-02-03 | Keizo Tsukada | Cordless telephone |
JPH0683137B2 (ja) * | 1984-05-08 | 1994-10-19 | ソニー株式会社 | コードレステレホン |
US4706274A (en) * | 1984-05-11 | 1987-11-10 | Southwestern Bell Telecommunications, Inc. | Cordless telephone system |
JPS60242738A (ja) * | 1984-05-17 | 1985-12-02 | Sony Corp | コ−ドレステレホン |
JPS60251730A (ja) * | 1984-05-29 | 1985-12-12 | Sony Corp | コ−ドレステレホン |
JPS6277727A (ja) | 1985-09-30 | 1987-04-09 | Nec Corp | コ−ドレス電話機用回線切替回路 |
US4809317A (en) * | 1987-04-22 | 1989-02-28 | Howe Paul R | Telephone line exclusion device |
JPS6436086A (en) * | 1987-07-31 | 1989-02-07 | Canon Kk | Functional deposition film |
US4805210A (en) * | 1987-09-10 | 1989-02-14 | Griffith Jr Herbert L | Automatic telephone line sharing and lockout apparatus |
JPS6489841A (en) * | 1987-09-30 | 1989-04-05 | Toshiba Corp | Radiotelephony system |
-
1987
- 1987-07-10 JP JP62173325A patent/JP2888517B2/ja not_active Expired - Fee Related
-
1988
- 1988-07-07 EP EP88306232A patent/EP0298749B2/de not_active Expired - Lifetime
- 1988-07-07 DE DE3885803T patent/DE3885803T3/de not_active Expired - Fee Related
- 1988-07-08 US US07/216,685 patent/US4939769A/en not_active Expired - Lifetime
- 1988-07-08 KR KR1019880008480A patent/KR910004061B1/ko not_active IP Right Cessation
- 1988-07-08 AU AU18845/88A patent/AU600586B2/en not_active Ceased
Also Published As
Publication number | Publication date |
---|---|
KR910004061B1 (ko) | 1991-06-22 |
EP0298749B2 (de) | 1999-03-10 |
US4939769A (en) | 1990-07-03 |
DE3885803D1 (de) | 1994-01-05 |
DE3885803T2 (de) | 1994-04-28 |
AU1884588A (en) | 1989-01-12 |
EP0298749A3 (en) | 1989-08-23 |
KR890003178A (ko) | 1989-04-13 |
JP2888517B2 (ja) | 1999-05-10 |
EP0298749B1 (de) | 1993-11-24 |
AU600586B2 (en) | 1990-08-16 |
JPS6416153A (en) | 1989-01-19 |
EP0298749A2 (de) | 1989-01-11 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8363 | Opposition against the patent | ||
8366 | Restricted maintained after opposition proceedings | ||
8320 | Willingness to grant licences declared (paragraph 23) | ||
8339 | Ceased/non-payment of the annual fee |