BE630764A - - Google Patents
Info
- Publication number
- BE630764A BE630764A BE630764DA BE630764A BE 630764 A BE630764 A BE 630764A BE 630764D A BE630764D A BE 630764DA BE 630764 A BE630764 A BE 630764A
- Authority
- BE
- Belgium
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B3/00—Line transmission systems
- H04B3/02—Details
- H04B3/20—Reducing echo effects or singing; Opening or closing transmitting path; Conditioning for transmission in one direction or the other
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03G—CONTROL OF AMPLIFICATION
- H03G1/00—Details of arrangements for controlling amplification
- H03G1/0005—Circuits characterised by the type of controlling devices operated by a controlling current or voltage signal
- H03G1/0035—Circuits characterised by the type of controlling devices operated by a controlling current or voltage signal using continuously variable impedance elements
- H03G1/0047—Circuits characterised by the type of controlling devices operated by a controlling current or voltage signal using continuously variable impedance elements using photo-electric elements
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03G—CONTROL OF AMPLIFICATION
- H03G7/00—Volume compression or expansion in amplifiers
- H03G7/06—Volume compression or expansion in amplifiers having semiconductor devices
-
- 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
- H04B1/62—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 providing a predistortion of the signal in the transmitter and corresponding correction in the receiver, e.g. for improving the signal/noise ratio
- H04B1/64—Volume compression or expansion arrangements
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Amplifiers (AREA)
- Optical Communication System (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US186735A US3213391A (en) | 1962-04-11 | 1962-04-11 | Photo-electrical compandor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE630764A true BE630764A (US08080257-20111220-C00005.png) |
Family
ID=22686086
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE630764D BE630764A (US08080257-20111220-C00005.png) | 1962-04-11 |
Country Status (5)
Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3333208A (en) * | 1963-10-09 | 1967-07-25 | Gen Electric | Automatic gain control amplifier |
| US3327239A (en) * | 1964-01-06 | 1967-06-20 | Robert J Carpenter | Four-terminal direct-current amplifier |
| US3397285A (en) * | 1964-07-22 | 1968-08-13 | Motorola Inc | Electronic apparatus |
| US3466572A (en) * | 1965-10-14 | 1969-09-09 | Automatic Elect Lab | Apparatus for regulating signals in response to their total root mean square value |
| US3436674A (en) * | 1966-03-14 | 1969-04-01 | Fairchild Recording Equipment | Gain control device for high fidelity audio systems |
| US3406357A (en) * | 1966-03-14 | 1968-10-15 | Itt | Compandor that supplies gain to the system |
| DE1286114B (de) * | 1966-04-01 | 1969-01-02 | Bavaria Atelier Gmbh | Schaltungsanordnung zum Daempfen einer Tonfrequenzspannung um einstellbare, gewuenschte Werte |
| US3625124A (en) * | 1968-07-03 | 1971-12-07 | Asahi Optical Co Ltd | Shutter timing mechanism using inverse feedback circuit |
| US3611173A (en) * | 1969-11-03 | 1971-10-05 | Atomic Energy Commission | Charge-sensitive preamplifier using optoelectronic feedback |
| US4087645A (en) * | 1976-12-09 | 1978-05-02 | Alfred Magnus Hestad | Telephone switching system |
| US4700379A (en) * | 1985-12-18 | 1987-10-13 | The Boeing Company | Aircraft communications apparatus |
| US5083080A (en) * | 1989-06-30 | 1992-01-21 | Anritsu Corporation | High frequency signal measuring equipment with cabled detecting and signal companding |
| US20040120534A1 (en) * | 2002-12-19 | 2004-06-24 | Mills William H. | Headphone automatic gain control system |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1843288A (en) * | 1928-10-08 | 1932-02-02 | Jr Samuel E Leonard | Electrical system and appliance |
| US2207243A (en) * | 1938-04-14 | 1940-07-09 | Rca Corp | Volume compression device for sound reproducers |
| US2328951A (en) * | 1942-07-17 | 1943-09-07 | Bell Telephone Labor Inc | Two-way signal transmission system |
| US2727683A (en) * | 1946-01-11 | 1955-12-20 | Philip H Allen | Registers |
| US2825764A (en) * | 1954-02-24 | 1958-03-04 | Bell Telephone Labor Inc | Cross-control compandor used as echo suppressors |
| US3059119A (en) * | 1961-06-22 | 1962-10-16 | Sinclair Oil & Gas Company | Photoelectric apparatus |
-
0
- NL NL291523D patent/NL291523A/xx unknown
- BE BE630764D patent/BE630764A/xx unknown
-
1962
- 1962-04-11 US US186735A patent/US3213391A/en not_active Expired - Lifetime
-
1963
- 1963-04-05 GB GB13691/63A patent/GB967152A/en not_active Expired
- 1963-04-11 CH CH463663A patent/CH444234A/de unknown
Also Published As
| Publication number | Publication date |
|---|---|
| CH444234A (de) | 1967-09-30 |
| US3213391A (en) | 1965-10-19 |
| GB967152A (en) | 1964-08-19 |
| NL291523A (US08080257-20111220-C00005.png) |
