SE348916B - - Google Patents
Info
- Publication number
- SE348916B SE348916B SE293270A SE293270A SE348916B SE 348916 B SE348916 B SE 348916B SE 293270 A SE293270 A SE 293270A SE 293270 A SE293270 A SE 293270A SE 348916 B SE348916 B SE 348916B
- Authority
- SE
- Sweden
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/02—Constructional features of telephone sets
- H04M1/0291—Door telephones
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M11/00—Telephonic communication systems specially adapted for combination with other electrical systems
- H04M11/02—Telephonic communication systems specially adapted for combination with other electrical systems with bell or annunciator systems
- H04M11/025—Door telephones
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/18—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast
- H04N7/183—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast for receiving images from a single remote source
- H04N7/186—Video door telephones
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Multimedia (AREA)
- Closed-Circuit Television Systems (AREA)
- Interconnected Communication Systems, Intercoms, And Interphones (AREA)
- Burglar Alarm Systems (AREA)
- Emergency Alarm Devices (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT1382269 | 1969-03-07 | ||
| IT2074769 | 1969-08-08 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SE348916B true SE348916B (en) | 1972-09-11 |
Family
ID=26326670
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SE293270A SE348916B (en) | 1969-03-07 | 1970-03-05 |
Country Status (5)
| Country | Link |
|---|---|
| ES (1) | ES377216A1 (en) |
| FR (1) | FR2036675A5 (en) |
| GB (1) | GB1298853A (en) |
| NL (1) | NL7003111A (en) |
| SE (1) | SE348916B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3672867D1 (en) * | 1985-04-08 | 1990-08-30 | Sony Corp | TELEVISION CAMERA FOR EXTERNAL SURVEILLANCE. |
| FR2621197B1 (en) * | 1987-09-25 | 1993-08-20 | Guichard Jacques | VISUAL AND SOUND COMMUNICATION TERMINAL COMPRISING A SUPPLEMENTAL LIGHTING DEVICE |
| FR2621198B1 (en) * | 1987-09-25 | 1993-07-30 | Guichard Jacques | VISUAL AND SOUND COMMUNICATION TERMINAL, ESPECIALLY VISIOPHONE, WITH ARTICULATED HOUSING |
-
1970
- 1970-03-04 NL NL7003111A patent/NL7003111A/xx unknown
- 1970-03-04 GB GB1052270A patent/GB1298853A/en not_active Expired
- 1970-03-05 SE SE293270A patent/SE348916B/xx unknown
- 1970-03-06 FR FR7008185A patent/FR2036675A5/fr not_active Expired
- 1970-03-06 ES ES377216A patent/ES377216A1/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| DE1963107A1 (en) | 1971-02-11 |
| NL7003111A (en) | 1970-09-09 |
| DE1963107B2 (en) | 1971-11-04 |
| ES377216A1 (en) | 1972-06-01 |
| GB1298853A (en) | 1972-12-06 |
| FR2036675A5 (en) | 1970-12-24 |