BE472941A - - Google Patents
Info
- Publication number
- BE472941A BE472941A BE472941DA BE472941A BE 472941 A BE472941 A BE 472941A BE 472941D A BE472941D A BE 472941DA BE 472941 A BE472941 A BE 472941A
- Authority
- BE
- Belgium
Links
Classifications
-
- 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
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
- H03M1/00—Analogue/digital conversion; Digital/analogue conversion
- H03M1/12—Analogue/digital converters
- H03M1/50—Analogue/digital converters with intermediate conversion to time interval
- H03M1/56—Input signal compared with linear ramp
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
- H03M1/00—Analogue/digital conversion; Digital/analogue conversion
- H03M1/12—Analogue/digital converters
- H03M1/60—Analogue/digital converters with intermediate conversion to frequency of pulses
Landscapes
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Radar Systems Or Details Thereof (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US554495A US2449467A (en) | 1944-09-16 | 1944-09-16 | Communication system employing pulse code modulation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE472941A true BE472941A (US07534539-20090519-C00280.png) | 1900-01-01 |
Family
ID=24213574
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE472941D BE472941A (US07534539-20090519-C00280.png) | 1944-09-16 |
Country Status (5)
Families Citing this family (28)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB682648A (en) * | 1936-10-11 | 1952-11-12 | Gaston Xavier Noeel Potier | Improvements in or relating to a method and device for multiplex transmission by means of time modulated pulses |
| US3912868A (en) * | 1943-07-17 | 1975-10-14 | Bell Telephone Labor Inc | Telephone privacy system |
| US3944745A (en) * | 1945-05-10 | 1976-03-16 | Bell Telephone Laboratories, Incorporated | Secret signaling system with means for preventing key disclosure |
| US2724183A (en) * | 1945-12-27 | 1955-11-22 | Calibron Products Inc | Remotely controlled precision drive and calculating systems |
| US2801281A (en) * | 1946-02-21 | 1957-07-30 | Bell Telephone Labor Inc | Communication system employing pulse code modulation |
| US2651716A (en) * | 1947-11-08 | 1953-09-08 | Int Standard Electric Corp | Pulse code modulation demodulator |
| GB680702A (en) * | 1947-12-07 | 1952-10-08 | Standard Telephones Cables Ltd | Mixed modulation in pulsed intercommunication systems |
| GB644932A (en) * | 1948-01-16 | 1950-10-18 | Standard Telephones Cables Ltd | Improvements in or relating to signal compression and expansion arrangements in electric communication systems |
| GB646050A (en) * | 1948-02-20 | 1950-11-15 | Standard Telephones Cables Ltd | Improvements in or relating to electric pulse code modulation systems of communication |
| GB664401A (en) * | 1948-03-25 | 1952-01-09 | Nat Res Dev | Improvements in thermionic valve circuits |
| US2619632A (en) * | 1948-04-23 | 1952-11-25 | Stromberg Carlson Co | Pulse communication system |
| US2603714A (en) * | 1948-09-01 | 1952-07-15 | Bell Telephone Labor Inc | Percentage time division multiplex for pulse code modulation |
| US2592308A (en) * | 1948-09-01 | 1952-04-08 | Bell Telephone Labor Inc | Nonlinear pulse code modulation system |
| US2700068A (en) * | 1948-11-16 | 1955-01-18 | Muller Egon Nicolas | Pulse multiplex system |
| BE492403A (US07534539-20090519-C00280.png) * | 1948-11-26 | |||
| BE492937A (US07534539-20090519-C00280.png) * | 1948-12-24 | |||
| US2725425A (en) * | 1949-10-01 | 1955-11-29 | Rca Corp | System for transmitting intelligence at reduced bandwidth |
| BE504158A (US07534539-20090519-C00280.png) * | 1950-05-17 | |||
| IT500026A (US07534539-20090519-C00280.png) * | 1950-05-17 | |||
| US2605361A (en) * | 1950-06-29 | 1952-07-29 | Bell Telephone Labor Inc | Differential quantization of communication signals |
| BE505568A (US07534539-20090519-C00280.png) * | 1950-09-01 | |||
| US2759998A (en) * | 1951-10-26 | 1956-08-21 | Itt | Pulse communication system |
| US2950348A (en) * | 1954-08-03 | 1960-08-23 | Philco Corp | Combined encoder and decoder system |
| NL100417C (US07534539-20090519-C00280.png) * | 1955-03-11 | 1900-01-01 | ||
| US2783455A (en) * | 1955-07-05 | 1957-02-26 | Paul Grimm | Self synchronous delay line |
| US2949505A (en) * | 1957-08-14 | 1960-08-16 | Bell Telephone Labor Inc | Reduced bandwith transmission system |
| US3244989A (en) * | 1963-08-13 | 1966-04-05 | Hewlett Packard Co | Oscilloscope sweep circuits |
| US3886313A (en) * | 1972-09-29 | 1975-05-27 | Datotek | Voice security method and system |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1461783A (en) * | 1919-12-27 | 1923-07-17 | American Telephone & Telegraph | Secret-communication system |
| US1561227A (en) * | 1923-03-31 | 1925-11-10 | Western Electric Co | Carrier-current signaling system |
| US1709901A (en) * | 1925-10-08 | 1929-04-23 | American Telephone & Telegraph | Secret-signaling system |
| US1757181A (en) * | 1928-12-04 | 1930-05-06 | American Telephone & Telegraph | Privacy system for telephone transmission |
| NL88393C (US07534539-20090519-C00280.png) * | 1937-06-18 | |||
| US2262838A (en) * | 1937-11-19 | 1941-11-18 | Int Standard Electric Corp | Electric signaling system |
| NL87334C (US07534539-20090519-C00280.png) * | 1938-10-03 | |||
| US2313209A (en) * | 1938-11-08 | 1943-03-09 | Valensi Georges | Communication system |
| US2277000A (en) * | 1940-09-17 | 1942-03-17 | Philco Radio & Television Corp | Synchronizing system |
| US2413023A (en) * | 1944-01-06 | 1946-12-24 | Standard Telephones Cables Ltd | Demodulator |
-
0
- BE BE472941D patent/BE472941A/xx unknown
-
1944
- 1944-09-16 US US554495A patent/US2449467A/en not_active Expired - Lifetime
-
1947
- 1947-05-06 FR FR946257D patent/FR946257A/fr not_active Expired
- 1947-05-20 CH CH275992D patent/CH275992A/fr unknown
- 1947-05-30 ES ES178391A patent/ES178391A1/es not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR946257A (fr) | 1949-05-30 |
| ES178391A1 (es) | 1947-08-01 |
| CH275992A (fr) | 1951-06-15 |
| US2449467A (en) | 1948-09-14 |
