FR914843A - - Google Patents
Info
- Publication number
- FR914843A FR914843A FR914843DA FR914843A FR 914843 A FR914843 A FR 914843A FR 914843D A FR914843D A FR 914843DA FR 914843 A FR914843 A FR 914843A
- Authority
- FR
- France
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/14—Systems for two-way working
- H04N7/141—Systems for two-way working between two video terminals, e.g. videophone
- H04N7/142—Constructional details of the terminal equipment, e.g. arrangements of the camera and the display
- H04N7/144—Constructional details of the terminal equipment, e.g. arrangements of the camera and the display camera and display on the same optical axis, e.g. optically multiplexing the camera and display for eye to eye contact
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Optical Communication System (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US541155A US2420198A (en) | 1944-06-20 | 1944-06-20 | Two-way television communication unit |
Publications (1)
Publication Number | Publication Date |
---|---|
FR914843A true FR914843A (en) | 1900-01-01 |
Family
ID=24158400
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR914843D Expired FR914843A (en) | 1944-06-20 |
Country Status (2)
Country | Link |
---|---|
US (1) | US2420198A (en) |
FR (1) | FR914843A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2131787A1 (en) * | 1970-10-22 | 1972-11-17 | Matra Engins | |
FR2621197A1 (en) * | 1987-09-25 | 1989-03-31 | Guichard Jacques | VISUAL AND SOUND COMMUNICATION TERMINAL HAVING AN APPARATUS LIGHTING DEVICE |
US5142562A (en) * | 1987-09-25 | 1992-08-25 | Jacques Guichard | Sound and vision communications terminal including an auxiliary lighting device |
Families Citing this family (37)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2504949A (en) * | 1946-01-19 | 1950-04-25 | Foufounis Jean Theodore | Self-view finder for photography |
BE478283A (en) * | 1946-12-17 | |||
GB632726A (en) * | 1947-07-04 | 1949-12-05 | Nathaniel Quentin Lawrence | View finder for television cameras |
US2537173A (en) * | 1948-02-19 | 1951-01-09 | Rauland Corp | Television intercommunication system |
US2739257A (en) * | 1948-10-15 | 1956-03-20 | Sheldon Edward Emanuel | Device for x-ray motion pictures |
US2601441A (en) * | 1949-11-12 | 1952-06-24 | Leonard Jean | Means for broadcasting television performances |
US2704008A (en) * | 1951-04-06 | 1955-03-15 | Freeman H Owens | Prefocused slide and card holder for television projectors |
US2676243A (en) * | 1951-10-16 | 1954-04-20 | Myers Carmel | Television lighting apparatus |
US2698356A (en) * | 1951-10-17 | 1954-12-28 | Paul A Roos | Combined motion-picture and television camera |
US2711667A (en) * | 1952-01-30 | 1955-06-28 | Reflectone Corp | Prompting device |
US2788390A (en) * | 1952-10-16 | 1957-04-09 | Sheldon Edward Emanuel | Device for examination of inaccessible parts |
US2845485A (en) * | 1952-11-13 | 1958-07-29 | Sheldon Edward Emanuel | Television camera for examination of internal structures |
US2926559A (en) * | 1953-04-06 | 1960-03-01 | Jayo Corp | Prompting apparatus for cameras |
US2753758A (en) * | 1953-12-31 | 1956-07-10 | Joseph B Walker | Oblique image superimposition projection devices |
BE541664A (en) * | 1954-09-30 | |||
US2883902A (en) * | 1954-10-14 | 1959-04-28 | Oppenheimer Jess | Prompting apparatus |
US2934601A (en) * | 1955-07-18 | 1960-04-26 | Oppenheimer Jess | Closed circuit television system and method of operation |
US2976356A (en) * | 1955-09-09 | 1961-03-21 | Thompson Ramo Wooldridge Inc | Slow sweep television system |
US2796801A (en) * | 1955-12-05 | 1957-06-25 | Reflectone Corp | Prompting device |
US2909600A (en) * | 1956-07-26 | 1959-10-20 | Bell Telephone Labor Inc | Two-way television over telephone lines |
US3116365A (en) * | 1961-12-18 | 1963-12-31 | Bell Telephone Labor Inc | Alignment device |
US3482040A (en) * | 1966-02-11 | 1969-12-02 | John F Brinster | Image transmission system |
US3495908A (en) * | 1966-12-29 | 1970-02-17 | Clare H Rea | Visual telephone subscriber alignment apparatus |
GB1236776A (en) * | 1967-10-24 | 1971-06-23 | Matsushita Electric Ind Co Ltd | Television telephone system |
US3974337A (en) * | 1967-10-24 | 1976-08-10 | Matsushita Electric Industrial Co., Ltd. | FM television telephone system |
JPS56119586A (en) * | 1980-02-25 | 1981-09-19 | Suzuyo Tanigaki | Picture display and image pickup device |
DE3431902A1 (en) * | 1984-08-30 | 1986-03-13 | Standard Elektrik Lorenz Ag, 7000 Stuttgart | User terminal for video telephony |
US4821307A (en) * | 1987-02-10 | 1989-04-11 | Flint Iii Paul L | Image splitter for two-way imaging apparatus |
US5639151A (en) * | 1996-02-16 | 1997-06-17 | Mcnelley; Steve H. | Pass-through reflective projection display |
RU2225025C2 (en) * | 2000-12-06 | 2004-02-27 | ОПТИВА, Инк. | Liquid-crystal device for information display |
US7119829B2 (en) | 2003-07-31 | 2006-10-10 | Dreamworks Animation Llc | Virtual conference room |
US7057637B2 (en) * | 2004-04-21 | 2006-06-06 | White Peter Mcduffie | Reflected backdrop for communications systems |
US8208007B2 (en) | 2004-04-21 | 2012-06-26 | Telepresence Technologies, Llc | 3-D displays and telepresence systems and methods therefore |
US8599239B2 (en) * | 2004-04-21 | 2013-12-03 | Telepresence Technologies, Llc | Telepresence systems and methods therefore |
US7515174B1 (en) | 2004-12-06 | 2009-04-07 | Dreamworks Animation L.L.C. | Multi-user video conferencing with perspective correct eye-to-eye contact |
US8654234B2 (en) * | 2009-07-26 | 2014-02-18 | Massachusetts Institute Of Technology | Bi-directional screen |
US9628754B2 (en) | 2015-04-02 | 2017-04-18 | Telepresence Technologies, Llc | TelePresence architectural systems and methods therefore |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1932253A (en) * | 1926-10-01 | 1933-10-24 | Bell Telephone Labor Inc | Television system |
FR743655A (en) * | 1931-03-04 | 1933-04-03 | ||
US2308381A (en) * | 1939-12-29 | 1943-01-12 | Bell Telephone Labor Inc | Two-way television transmission |
US2315784A (en) * | 1941-11-25 | 1943-04-06 | Rca Corp | Electrical circuit |
-
0
- FR FR914843D patent/FR914843A/fr not_active Expired
-
1944
- 1944-06-20 US US541155A patent/US2420198A/en not_active Expired - Lifetime
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2131787A1 (en) * | 1970-10-22 | 1972-11-17 | Matra Engins | |
FR2621197A1 (en) * | 1987-09-25 | 1989-03-31 | Guichard Jacques | VISUAL AND SOUND COMMUNICATION TERMINAL HAVING AN APPARATUS LIGHTING DEVICE |
EP0310477A1 (en) * | 1987-09-25 | 1989-04-05 | Jacques Guichard | Terminal for visual and sound communication fitted with a booster illumination device |
US5142562A (en) * | 1987-09-25 | 1992-08-25 | Jacques Guichard | Sound and vision communications terminal including an auxiliary lighting device |
Also Published As
Publication number | Publication date |
---|---|
US2420198A (en) | 1947-05-06 |