FR1132910A - Système de transmission visuelle et sonore dans les deux sens - Google Patents
Système de transmission visuelle et sonore dans les deux sensInfo
- Publication number
- FR1132910A FR1132910A FR1132910DA FR1132910A FR 1132910 A FR1132910 A FR 1132910A FR 1132910D A FR1132910D A FR 1132910DA FR 1132910 A FR1132910 A FR 1132910A
- Authority
- FR
- France
- Prior art keywords
- transmission system
- sound transmission
- way visual
- visual
- way
- Prior art date
- 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
- H04N7/12—Systems in which the television signal is transmitted via one channel or a plurality of parallel channels, the bandwidth of each channel being less than the bandwidth of the television signal
- H04N7/122—Systems in which the television signal is transmitted via one channel or a plurality of parallel channels, the bandwidth of each channel being less than the bandwidth of the television signal involving expansion and subsequent compression of a signal segment, e.g. a frame, a line
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/01—Conversion of standards, e.g. involving analogue television standards or digital television standards processed at pixel level
- H04N7/0105—Conversion of standards, e.g. involving analogue television standards or digital television standards processed at pixel level using a storage device with different write and read speed
- H04N7/011—Conversion of standards, e.g. involving analogue television standards or digital television standards processed at pixel level using a storage device with different write and read speed using magnetic recording
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Television Signal Processing For Recording (AREA)
- Closed-Circuit Television Systems (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US459300A US2895005A (en) | 1954-09-30 | 1954-09-30 | Two-way television over telephone lines |
Publications (1)
Publication Number | Publication Date |
---|---|
FR1132910A true FR1132910A (fr) | 1957-03-19 |
Family
ID=23824218
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR1132910D Expired FR1132910A (fr) | 1954-09-30 | 1955-06-06 | Système de transmission visuelle et sonore dans les deux sens |
Country Status (7)
Country | Link |
---|---|
US (1) | US2895005A (fr) |
BE (1) | BE541664A (fr) |
CH (1) | CH341190A (fr) |
DE (1) | DE1135954B (fr) |
FR (1) | FR1132910A (fr) |
GB (1) | GB775832A (fr) |
NL (1) | NL198601A (fr) |
Families Citing this family (30)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3259191A (en) * | 1958-05-05 | 1966-07-05 | Ross A Mcclintcck | Subsea blowout prevention and landing apparatus |
US3052755A (en) * | 1958-08-11 | 1962-09-04 | Garfield Eugene | Copying and reproducing device |
US2994740A (en) * | 1959-02-11 | 1961-08-01 | Gen Precision Inc | Remote card selecting and viewing apparatus |
US3064078A (en) * | 1959-05-12 | 1962-11-13 | Eugene E Garfield | Copying and reproducing device |
GB1052373A (fr) * | 1962-09-11 | |||
US3263027A (en) * | 1962-12-11 | 1966-07-26 | Beltrami Aurelio | Simultaneous bilateral televideophonic communication systems |
US3275746A (en) * | 1962-12-11 | 1966-09-27 | Beltrami Aurelio | Simultaneous multiple two-way multiplex communications systems |
DE1214719B (de) * | 1963-09-18 | 1966-04-21 | Telefunken Patent | Verfahren zur Magnetbandaufzeichnung und -wiedergabe genormter Fernsehsignale fuer Heimzwecke und Anordnung zur Durchfuehrung des Verfahrens |
US3470317A (en) * | 1965-01-23 | 1969-09-30 | Sony Corp | Horizontal sync pulse generation for video recording employing magnetic gear wheel |
US3530251A (en) * | 1966-11-21 | 1970-09-22 | Nippon Electric Co | Video telephone set |
DE1295619B (de) * | 1967-03-17 | 1969-05-22 | Siemens Ag | Geraet fuer Fernsehtelefonie |
US3532815A (en) * | 1967-04-04 | 1970-10-06 | Bell Telephone Labor Inc | 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 |
US3493677A (en) * | 1968-10-23 | 1970-02-03 | T O Paine | Television signal scan rate conversion system |
US3706843A (en) * | 1969-10-29 | 1972-12-19 | Zenith Radio Corp | Narrow-bandwidth television system |
US3842199A (en) * | 1972-05-26 | 1974-10-15 | Rca Corp | Telephone image transmission system |
US3851095A (en) * | 1972-08-07 | 1974-11-26 | Telescan Communications Syst I | Communication system for transmitting video information through media of restricted bandwidth |
JPS57125590A (en) * | 1981-01-28 | 1982-08-04 | Nec Corp | Still picture transmitter |
US4473837A (en) * | 1982-05-28 | 1984-09-25 | General Electric Company | System for encoding and decoding video signals |
US6847334B2 (en) | 1998-06-29 | 2005-01-25 | William Hayhurst | Mobile telecommunication device for simultaneously transmitting and receiving sound and image data |
US6567981B1 (en) | 1998-08-03 | 2003-05-20 | Elysium Broadband Inc. | Audio/video signal redistribution system |
WO2002084590A1 (fr) * | 2001-04-11 | 2002-10-24 | Applied Minds, Inc. | Web des connaissances |
US6714234B1 (en) * | 2001-04-11 | 2004-03-30 | Applied Minds, Inc. | Maintaining eye-contact in teleconferencing using structured light |
US7844610B2 (en) | 2003-12-12 | 2010-11-30 | Google Inc. | Delegated authority evaluation system |
US8069175B2 (en) * | 2002-04-10 | 2011-11-29 | Google Inc. | Delegating authority to evaluate content |
US20030195834A1 (en) * | 2002-04-10 | 2003-10-16 | Hillis W. Daniel | Automated online purchasing system |
AU2003297193A1 (en) | 2002-12-13 | 2004-07-09 | Applied Minds, Inc. | Meta-web |
US8012025B2 (en) * | 2002-12-13 | 2011-09-06 | Applied Minds, Llc | Video game controller hub with control input reduction and combination schemes |
US20050131918A1 (en) * | 2003-12-12 | 2005-06-16 | W. Daniel Hillis | Personalized profile for evaluating content |
Family Cites Families (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1735037A (en) * | 1926-08-12 | 1929-11-12 | American Telephone & Telegraph | Method of and apparatus for reducing width of transmission bands |
US1932253A (en) * | 1926-10-01 | 1933-10-24 | Bell Telephone Labor Inc | Television system |
NL38451C (fr) * | 1929-05-23 | |||
US1805594A (en) * | 1930-03-29 | 1931-05-19 | American Telephone & Telegraph | Communicating system |
GB417052A (en) * | 1933-03-21 | 1934-09-21 | Louis Claude Martin | Improvements in or relating to television systems |
US2281405A (en) * | 1938-05-11 | 1942-04-28 | Barrish Robert Lloyd | Method and apparatus for transmission of signals |
US2250476A (en) * | 1938-06-14 | 1941-07-29 | Earl R Evans | System for phototransmission |
DE728838C (de) * | 1938-12-09 | 1942-12-10 | Guenther Krawinkel Dr Ing | Verfahren zur AEnderung der Frequenzbandbreite elektrisch uebertragener Nachrichten |
US2314471A (en) * | 1940-08-24 | 1943-03-23 | Bell Telephone Labor Inc | Two-way television and speech television |
NL77417C (fr) * | 1941-01-17 | |||
DE892768C (de) * | 1941-08-06 | 1953-10-08 | Lorenz C Ag | Anordnung zur telegraphischen UEbermittlung von Reihen- oder Einzelbildern |
US2388170A (en) * | 1943-04-15 | 1945-10-30 | Mccollum Thelma | Stereoscopic television apparatus |
FR914843A (fr) * | 1944-06-20 | 1900-01-01 | ||
US2478545A (en) * | 1945-11-08 | 1949-08-09 | Honorary Advisory Council Sci | Ophthalmic camera with adjustable light support |
BE526230A (fr) * | 1950-06-06 | |||
US2764148A (en) * | 1950-07-11 | 1956-09-25 | Sheldon Edward Emannel | Endoscope means for the internal examination of the human body |
-
0
- BE BE541664D patent/BE541664A/xx unknown
- NL NL198601D patent/NL198601A/xx unknown
-
1954
- 1954-09-30 US US459300A patent/US2895005A/en not_active Expired - Lifetime
-
1955
- 1955-06-06 FR FR1132910D patent/FR1132910A/fr not_active Expired
- 1955-07-21 CH CH341190D patent/CH341190A/de unknown
- 1955-08-31 DE DEW17409A patent/DE1135954B/de active Pending
- 1955-09-23 GB GB27201/55A patent/GB775832A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
DE1135954B (de) | 1962-09-06 |
GB775832A (en) | 1957-05-29 |
BE541664A (fr) | |
CH341190A (de) | 1959-09-30 |
NL198601A (fr) | |
US2895005A (en) | 1959-07-14 |
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