NL272809A - - Google Patents
Info
- Publication number
- NL272809A NL272809A NL272809DA NL272809A NL 272809 A NL272809 A NL 272809A NL 272809D A NL272809D A NL 272809DA NL 272809 A NL272809 A NL 272809A
- Authority
- NL
- Netherlands
Links
Classifications
-
- 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
- H04B1/667—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 using a division in frequency subbands
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Reduction Or Emphasis Of Bandwidth Of Signals (AREA)
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US78660A US3139487A (en) | 1960-12-27 | 1960-12-27 | Bandwidth reduction system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL272809A true NL272809A (it) |
Family
ID=22145467
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL272809D NL272809A (it) | 1960-12-27 |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US3139487A (it) |
| BE (1) | BE611734A (it) |
| DE (1) | DE1151285B (it) |
| ES (1) | ES273618A1 (it) |
| GB (1) | GB947240A (it) |
| NL (1) | NL272809A (it) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3431362A (en) * | 1966-04-22 | 1969-03-04 | Bell Telephone Labor Inc | Voice-excited,bandwidth reduction system employing pitch frequency pulses generated by unencoded baseband signal |
| US3471648A (en) * | 1966-07-28 | 1969-10-07 | Bell Telephone Labor Inc | Vocoder utilizing companding to reduce background noise caused by quantizing errors |
| US3875341A (en) * | 1972-02-24 | 1975-04-01 | Int Standard Electric Corp | System for transferring wideband sound signals |
| DE2309987C2 (de) * | 1973-02-28 | 1982-05-13 | Standard Elektrik Lorenz Ag, 7000 Stuttgart | System für die Übertragung breitbandiger Signale |
| US3894190A (en) * | 1973-02-28 | 1975-07-08 | Int Standard Electric Corp | System for transferring wide-band sound signals |
| US3872250A (en) * | 1973-02-28 | 1975-03-18 | David C Coulter | Method and system for speech compression |
| NL7600932A (nl) * | 1976-01-30 | 1977-08-02 | Philips Nv | Bandcompressie systeem. |
| DE3174560D1 (en) * | 1981-07-28 | 1986-06-12 | Ibm | Transmission method for voice and digital data and arrangement for carrying out said method |
| US4545065A (en) * | 1982-04-28 | 1985-10-01 | Xsi General Partnership | Extrema coding signal processing method and apparatus |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2151091A (en) * | 1935-10-30 | 1939-03-21 | Bell Telephone Labor Inc | Signal transmission |
| DE1079118B (de) * | 1958-04-11 | 1960-04-07 | Siemens Ag | Verfahren zur elektrischen Nachrichtenuebertragung unter Frequenzbandpressung |
| NL245178A (it) * | 1958-11-17 |
-
0
- NL NL272809D patent/NL272809A/xx unknown
-
1960
- 1960-12-27 US US78660A patent/US3139487A/en not_active Expired - Lifetime
-
1961
- 1961-12-14 GB GB44749/61A patent/GB947240A/en not_active Expired
- 1961-12-16 ES ES0273618A patent/ES273618A1/es not_active Expired
- 1961-12-19 BE BE611734A patent/BE611734A/fr unknown
- 1961-12-23 DE DEW31352A patent/DE1151285B/de active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| GB947240A (en) | 1964-01-22 |
| ES273618A1 (es) | 1962-04-01 |
| US3139487A (en) | 1964-06-30 |
| BE611734A (fr) | 1962-04-16 |
| DE1151285B (de) | 1963-07-11 |