H04J 3/172
Digital speech interpolation, i.e. dsi
Official title: {Digital speech interpolation, i.e. DSI}
H04J3/172 (Digital speech interpolation, i.e. dsi) appears on 25 US grants and 0 published applications in this corpus.
Search patents in H04J- Granted patents
- 25
- Published applications
- 0
- Assignees
- 16
- Inventors
- 39
- Latest grant
- 11 Feb 2003
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 2 | 0 |
| 1993 | 1 | 0 |
| 1994 | 4 | 0 |
| 1995 | 1 | 0 |
| 1996 | 2 | 0 |
| 1997 | 2 | 0 |
| 1998 | 2 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 0 |
| 2002 | 0 | 0 |
| 2003 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Use of robbed framing bits to provide secondary pots channel over extended range ISDN communications network11 Feb 2003US 6,519,267 B1Adtran, Inc.
- N:1 transcoder20 Nov 2001US 6,320,876 B1Alcatel USA, Inc.
- N: 1 Transcoder16 Jun 1998US 5,768,278 ADSC Communications Corporation
- Digital speech interpolation method and apparatus19 May 1998US 5,754,536 AMotorola, Inc.
- Multi-subscriber unit for radio communication system and method30 Dec 1997US 5,703,881 AHughes Electronics Corporation
No published applications in this class yet.
Most cited
By later US patents
- Mixed mode compression for data transmission172US 4,890,282 ANetwork Equipment Technologies, Inc. · 1989
- Method and apparatus for exploitation of voice inactivity to increase the capacity of a time division multiple access radio communications system125US 5,299,198 AHughes Aircraft Company · 1994
- Cellular telephone with datagram and dispatch operation102US 5,475,689 AHughes Aircraft Company · 1995
- Method for exploitation of voice inactivity to increase the capacity of a time division multiple access radio communications system99US 5,513,183 AHughes Aircraft Company · 1996
- Transmission power level adjustment in radio telephony54US 5,357,513 AHughes Aircraft Company · 1994