AU2584999A - High-quality audio signals via telephone line - Google Patents
High-quality audio signals via telephone lineInfo
- Publication number
- AU2584999A AU2584999A AU25849/99A AU2584999A AU2584999A AU 2584999 A AU2584999 A AU 2584999A AU 25849/99 A AU25849/99 A AU 25849/99A AU 2584999 A AU2584999 A AU 2584999A AU 2584999 A AU2584999 A AU 2584999A
- Authority
- AU
- Australia
- Prior art keywords
- audio signals
- telephone line
- signals via
- quality audio
- via telephone
- 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.)
- Abandoned
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M11/00—Telephonic communication systems specially adapted for combination with other electrical systems
- H04M11/06—Simultaneous speech and data transmission, e.g. telegraphic transmission over the same conductors
-
- 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
- H04B1/66—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 for reducing bandwidth of signals; for improving efficiency of transmission
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B14/00—Transmission systems not characterised by the medium used for transmission
- H04B14/02—Transmission systems not characterised by the medium used for transmission characterised by the use of pulse modulation
- H04B14/04—Transmission systems not characterised by the medium used for transmission characterised by the use of pulse modulation using pulse code modulation
- H04B14/046—Systems or methods for reducing noise or bandwidth
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Telephonic Communication Services (AREA)
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US1886998A | 1998-02-05 | 1998-02-05 | |
US09018869 | 1998-02-05 | ||
PCT/US1999/002468 WO1999040688A1 (en) | 1998-02-05 | 1999-02-05 | High-quality audio signals via telephone line |
Publications (1)
Publication Number | Publication Date |
---|---|
AU2584999A true AU2584999A (en) | 1999-08-23 |
Family
ID=21790185
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
AU25849/99A Abandoned AU2584999A (en) | 1998-02-05 | 1999-02-05 | High-quality audio signals via telephone line |
Country Status (2)
Country | Link |
---|---|
AU (1) | AU2584999A (en) |
WO (1) | WO1999040688A1 (en) |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB9205580D0 (en) * | 1992-03-13 | 1992-04-29 | Marconi Gec Ltd | Videophone |
CN1516465A (en) * | 1994-07-25 | 2004-07-28 | 西门子公司 | Method for establishing connection and controlling videophone communication |
US5602902A (en) * | 1995-03-24 | 1997-02-11 | Intel Corporation | Four wire modem signal switching for voice and data applications |
AUPN399295A0 (en) * | 1995-07-06 | 1995-07-27 | Diginet Systems Pty. Limited | Virtual broadband transmission |
JP3777638B2 (en) * | 1995-12-18 | 2006-05-24 | ソニー株式会社 | Call system terminal device and call method |
-
1999
- 1999-02-05 AU AU25849/99A patent/AU2584999A/en not_active Abandoned
- 1999-02-05 WO PCT/US1999/002468 patent/WO1999040688A1/en active Application Filing
Also Published As
Publication number | Publication date |
---|---|
WO1999040688A1 (en) | 1999-08-12 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
MK6 | Application lapsed section 142(2)(f)/reg. 8.3(3) - pct applic. not entering national phase |