GB9723209D0 - Speakerphone, speakerphone system and method of operating a speakerphone - Google Patents
Speakerphone, speakerphone system and method of operating a speakerphoneInfo
- Publication number
- GB9723209D0 GB9723209D0 GBGB9723209.4A GB9723209A GB9723209D0 GB 9723209 D0 GB9723209 D0 GB 9723209D0 GB 9723209 A GB9723209 A GB 9723209A GB 9723209 D0 GB9723209 D0 GB 9723209D0
- Authority
- GB
- United Kingdom
- Prior art keywords
- speakerphone
- operating
- speakerphone system
- 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.)
- Granted
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)
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
- Telephone Function (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US45468995A | 1995-05-31 | 1995-05-31 | |
GB9611308A GB2301731B (en) | 1995-05-31 | 1996-05-30 | Speakerphone, speakerphone system and method of operating a speakerphone |
Publications (3)
Publication Number | Publication Date |
---|---|
GB9723209D0 true GB9723209D0 (en) | 1998-01-07 |
GB2318024A GB2318024A (en) | 1998-04-08 |
GB2318024B GB2318024B (en) | 1998-09-02 |
Family
ID=26309410
Family Applications (3)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB9723205A Expired - Fee Related GB2318023B (en) | 1995-05-31 | 1996-05-30 | Speakerphone, speakerphone system and method of operating a speakerphone |
GB9723211A Expired - Fee Related GB2318025B (en) | 1995-05-31 | 1996-05-30 | Speakerphone, speakerphone system and method of operating speakerphone |
GB9723209A Expired - Fee Related GB2318024B (en) | 1995-05-31 | 1996-05-30 | Speakerphone, speakerphone system and method of operating a speakerphone |
Family Applications Before (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB9723205A Expired - Fee Related GB2318023B (en) | 1995-05-31 | 1996-05-30 | Speakerphone, speakerphone system and method of operating a speakerphone |
GB9723211A Expired - Fee Related GB2318025B (en) | 1995-05-31 | 1996-05-30 | Speakerphone, speakerphone system and method of operating speakerphone |
Country Status (1)
Country | Link |
---|---|
GB (3) | GB2318023B (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2330744B (en) | 1997-10-24 | 2002-05-29 | Mitel Corp | Howling controller |
KR20000062086A (en) * | 1999-03-30 | 2000-10-25 | 윤종용 | Method for displaying the transmission/receipt state ofvoice signal in case of the speaker-phone mode ina portable phone |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5797262A (en) * | 1980-12-09 | 1982-06-16 | Nippon Telegr & Teleph Corp <Ntt> | Loud speaker telephone set system |
GB2122851B (en) * | 1982-06-10 | 1986-03-19 | Standard Telephones Cables Ltd | Loudspeaking telephones |
GB8317706D0 (en) * | 1983-06-29 | 1983-08-03 | Standard Telephones Cables Ltd | Telephone subsets |
US4741018A (en) * | 1987-04-24 | 1988-04-26 | Motorola, Inc. | Speakerphone using digitally compressed audio to control voice path gain |
US5014294A (en) * | 1990-02-01 | 1991-05-07 | Motorola Inc. | Speakerphone for cellular telephones with howl prevention, detection, elimination and determination |
US5075687A (en) * | 1990-09-27 | 1991-12-24 | Advanced Micro Devices, Inc. | Echo suppression with both digital and analog variable attenuators |
GB2278754B (en) * | 1993-06-02 | 1997-06-18 | Northern Telecom Ltd | Telephone instrument |
US5715309A (en) * | 1995-03-03 | 1998-02-03 | Advanced Micro Devices, Inc. | Conversion of compressed speech codes between attenuated and unattenuated formats |
-
1996
- 1996-05-30 GB GB9723205A patent/GB2318023B/en not_active Expired - Fee Related
- 1996-05-30 GB GB9723211A patent/GB2318025B/en not_active Expired - Fee Related
- 1996-05-30 GB GB9723209A patent/GB2318024B/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
GB2318025B (en) | 1998-09-02 |
GB9723205D0 (en) | 1998-01-07 |
GB9723211D0 (en) | 1998-01-07 |
GB2318023B (en) | 1998-09-02 |
GB2318024B (en) | 1998-09-02 |
GB2318024A (en) | 1998-04-08 |
GB2318023A (en) | 1998-04-08 |
GB2318025A (en) | 1998-04-08 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
732E | Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977) | ||
732E | Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977) | ||
PCNP | Patent ceased through non-payment of renewal fee |
Effective date: 20050530 |