GB332284A - Improvements in electrical transmission systems - Google Patents

Improvements in electrical transmission systems

Info

Publication number: GB332284A
Authority: GB; United Kingdom
Prior art keywords: signals; telegraphic; receiver; transmitted; picture signals
Prior art date: 1929-04-18
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

Application number

GB12075/29A

Other languages

Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)

AT&T Corp

Original Assignee

Bell Telephone Laboratories Inc

Priority date (The priority date 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 date listed.)

1929-04-30

Filing date

1929-04-18

Publication date

1930-07-18

1929-04-18 Application filed by Bell Telephone Laboratories Inc filed Critical Bell Telephone Laboratories Inc

1930-07-18 Publication of GB332284A publication Critical patent/GB332284A/en

Status Expired legal-status Critical Current

Classifications

- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N11/00—Colour television systems
- H04N11/06—Transmission systems characterised by the manner in which the individual colour picture signal components are combined
- H04N11/12—Transmission systems characterised by the manner in which the individual colour picture signal components are combined using simultaneous signals only
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J1/00—Frequency-division multiplex systems
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/14—Picture signal circuitry for video frequency region
- H04N5/16—Circuitry for reinsertion of DC and slowly varying components of signal; Circuitry for preservation of black or white level
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/08—Systems for the simultaneous or sequential transmission of more than one television signal, e.g. additional information signals, the signals occupying wholly or partially the same frequency band, e.g. by time division
- H04N7/0803—Systems for the simultaneous or sequential transmission of more than one television signal, e.g. additional information signals, the signals occupying wholly or partially the same frequency band, e.g. by time division using frequency interleaving, e.g. with precision offset
- 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
- H04N7/127—Systems in which different parts of the picture signal frequency band are individually processed, e.g. suppressed, transposed

Landscapes

Engineering & Computer Science (AREA)
Signal Processing (AREA)
Multimedia (AREA)
Computer Networks & Wireless Communication (AREA)
Facsimiles In General (AREA)
Mobile Radio Communication Systems (AREA)
Transforming Light Signals Into Electric Signals (AREA)
Closed-Circuit Television Systems (AREA)
Optical Communication System (AREA)

GB12075/29A 1929-04-30 1929-04-18 Improvements in electrical transmission systems Expired GB332284A (en)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
US359211A US1769919A (en)	1929-04-30	1929-04-30	Electrooptical transmission system

Publications (1)

Publication Number	Publication Date
GB332284A true GB332284A (en)	1930-07-18

Family

ID=23412809

Family Applications (3)

Application Number	Title	Priority Date	Filing Date
GB12075/29A Expired GB332284A (en)	1929-04-30	1929-04-18	Improvements in electrical transmission systems
GB7789/30A Expired GB350455A (en)	1929-04-30	1930-03-10	Improvements in television
GB7788/30A Expired GB350454A (en)	1929-04-30	1930-03-10	Improvements in or relating to electrical image translating images

Family Applications After (2)

Application Number	Title	Priority Date	Filing Date
GB7789/30A Expired GB350455A (en)	1929-04-30	1930-03-10	Improvements in television
GB7788/30A Expired GB350454A (en)	1929-04-30	1930-03-10	Improvements in or relating to electrical image translating images

Country Status (4)

Country	Link
US (1)	US1769919A (de)
DE (3)	DE600042C (de)
FR (3)	FR675539A (de)
GB (3)	GB332284A (de)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE1018098B (de) *	1935-08-06	1957-10-24	Fernseh Gmbh	Anordnung zur Synchronisierung mehrerer Sendestellen von einer zentralen Stelle aus bei Fernseh- und Bilduebertragungen
US2636937A (en) *	1949-04-01	1953-04-28	Rca Corp	Signal separating circuit for color television
BE506696A (de) *	1950-10-31	1900-01-01
US2832817A (en) *	1952-07-21	1958-04-29	Raibourn Paul	Intelligence transmission system
NL104022C (de) *	1952-08-23
US2982813A (en) *	1958-08-28	1961-05-02		Sound
DE1248094B (de) *	1958-08-28	1967-08-24	Rca Corp	Fernsehuebertragungseinrichtung mit Reservetonkanal
DE1244842B (de) *	1965-08-05	1967-07-20	Telefunken Patent	Fernsehuebertragungssystem bei dem zusaetzlich ein Steuersignal fuer ein Schreibgeraet uebertragen wird

1929
- 1929-04-18 GB GB12075/29A patent/GB332284A/en not_active Expired
- 1929-04-30 US US359211A patent/US1769919A/en not_active Expired - Lifetime
- 1929-05-05 DE DEE39210D patent/DE600042C/de not_active Expired
- 1929-05-22 FR FR675539D patent/FR675539A/fr not_active Expired
1930
- 1930-02-19 FR FR38105D patent/FR38105E/fr not_active Expired
- 1930-03-01 DE DE1930627126D patent/DE627126C/de not_active Expired
- 1930-03-05 FR FR38465D patent/FR38465E/fr not_active Expired
- 1930-03-10 GB GB7789/30A patent/GB350455A/en not_active Expired
- 1930-03-10 GB GB7788/30A patent/GB350454A/en not_active Expired
- 1930-03-12 DE DE1930629604D patent/DE629604C/de not_active Expired

Also Published As

Publication number	Publication date
GB350454A (en)	1931-06-10
DE627126C (de)	1936-03-09
GB350455A (en)	1931-06-10
DE600042C (de)	1934-07-18
FR675539A (fr)	1930-02-11
FR38105E (fr)	1931-03-19
FR38465E (fr)	1931-06-06
US1769919A (en)	1930-07-08
DE629604C (de)	1936-05-12

Publication	Publication Date	Title
US1688453A (en)	1928-10-23	Telephone signaling system
GB332284A (en)	1930-07-18	Improvements in electrical transmission systems
US1811102A (en)	1931-06-23	Signal transmission by guided and unguided waves
US2299487A (en)	1942-10-20	Electric wave transmission system
US2284706A (en)	1942-06-02	Arrangement for the transmission of intelligence
US1658337A (en)	1928-02-07	Carrier-wave signaling system
US1919046A (en)	1933-07-18	Selective calling circuits
US1554290A (en)	1925-09-22	Carrier telegraph system
GB501915A (en)	1939-03-02	Telephone exchange systems
US1474426A (en)	1923-11-20	Secret-communication system
US1454495A (en)	1923-05-08	System of current-wave transmission
US1606131A (en)	1926-11-09	Carrier-wave signaling system
US2585058A (en)	1952-02-12	Telephone radio link termination
US1680759A (en)	1928-08-14	Carrier-current system
US1588415A (en)	1926-06-15	Production and transmission of modulated waves
US845282A (en)	1907-02-26	Telephonic-current reinforcer or repeater system.
US980359A (en)	1911-01-03	Multiplex telephony and telegraphy.
US1742291A (en)	1930-01-07	Selective signaling system
US1678133A (en)	1928-07-24	Power-line signaling
US1529801A (en)	1925-03-17	Multiplex submarine cable
US1634286A (en)	1927-07-05	Telegraph circuits
US1289437A (en)	1918-12-31	Signaling system.
US1852051A (en)	1932-04-05	Telegraph repeater system
US1601967A (en)	1926-10-05	Carrier-wave transmission
US1612090A (en)	1926-12-28	Means and method for signaling