NL77421C - - Google Patents
Info
- Publication number
- NL77421C NL77421C NL77421DA NL77421C NL 77421 C NL77421 C NL 77421C NL 77421D A NL77421D A NL 77421DA NL 77421 C NL77421 C NL 77421C
- Authority
- NL
- Netherlands
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B3/00—Line transmission systems
- H04B3/54—Systems for transmission via power distribution lines
-
- 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
- H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
- H04B1/40—Circuits
- H04B1/50—Circuits using different frequencies for the two directions of communication
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B2203/00—Indexing scheme relating to line transmission systems
- H04B2203/54—Aspects of powerline communications not already covered by H04B3/54 and its subgroups
- H04B2203/5404—Methods of transmitting or receiving signals via power distribution lines
- H04B2203/5416—Methods of transmitting or receiving signals via power distribution lines by adding signals to the wave form of the power source
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B2203/00—Indexing scheme relating to line transmission systems
- H04B2203/54—Aspects of powerline communications not already covered by H04B3/54 and its subgroups
- H04B2203/5429—Applications for powerline communications
- H04B2203/5437—Wired telephone
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Power Engineering (AREA)
- Telephonic Communication Services (AREA)
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
- Devices For Supply Of Signal Current (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US625083A US2510271A (en) | 1945-10-27 | 1945-10-27 | Power line carrier telephone system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL77421C true NL77421C (https=) |
Family
ID=24504508
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL77421D NL77421C (https=) | 1945-10-27 |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US2510271A (https=) |
| FR (1) | FR942516A (https=) |
| GB (1) | GB627314A (https=) |
| NL (1) | NL77421C (https=) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2604544A (en) * | 1949-12-30 | 1952-07-22 | W C Dillon & Company Inc | Carrier telephone system with audio-frequency signaling |
| BE502150A (https=) * | 1950-03-27 | 1900-01-01 | ||
| GB748783A (https=) * | 1953-06-12 | |||
| US2927966A (en) * | 1957-09-27 | 1960-03-08 | Bell Telephone Labor Inc | Carrier telephone systems with carrier-shift signaling |
| US3962547A (en) * | 1975-05-27 | 1976-06-08 | Westinghouse Electric Corporation | Repeater coupler for power line communication systems |
| US6310639B1 (en) | 1996-02-07 | 2001-10-30 | Hewlett-Packard Co. | Printer printhead |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1603657A (en) * | 1924-04-07 | 1926-10-19 | Western Electric Co | Power-line signaling |
| US2292222A (en) * | 1939-12-28 | 1942-08-04 | Elmer G Van Name | Two-way radio communication system |
| US2294905A (en) * | 1941-04-19 | 1942-09-08 | Bell Telephone Labor Inc | Power line telephone system |
| US2289048A (en) * | 1941-06-19 | 1942-07-07 | Bell Telephone Labor Inc | Power line carrier frequency telephone system |
-
0
- NL NL77421D patent/NL77421C/xx active
-
1945
- 1945-10-27 US US625083A patent/US2510271A/en not_active Expired - Lifetime
-
1946
- 1946-10-15 GB GB30689/46A patent/GB627314A/en not_active Expired
-
1947
- 1947-02-27 FR FR942516D patent/FR942516A/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| US2510271A (en) | 1950-06-06 |
| FR942516A (fr) | 1949-02-10 |
| GB627314A (en) | 1949-08-05 |