GB1087300A – Improved wired broadcasting systems and apparatus therefor
– Google Patents
GB1087300A – Improved wired broadcasting systems and apparatus therefor
– Google Patents
Improved wired broadcasting systems and apparatus therefor
Info
Publication number
GB1087300A
GB1087300A
GB48077/63A
GB4807763A
GB1087300A
GB 1087300 A
GB1087300 A
GB 1087300A
GB 48077/63 A
GB48077/63 A
GB 48077/63A
GB 4807763 A
GB4807763 A
GB 4807763A
GB 1087300 A
GB1087300 A
GB 1087300A
Authority
GB
United Kingdom
Prior art keywords
frequency
carrier
colour
scan frequency
distribution system
Prior art date
1963-12-05
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
GB48077/63A
Inventor
Leonard Sidney Palmer
Daniel Henry Smart
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.)
Communications Patents Ltd
Original Assignee
Communications Patents Ltd
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.)
1963-12-05
Filing date
1963-12-05
Publication date
1967-10-18
1963-12-05
Application filed by Communications Patents Ltd
filed
Critical
Communications Patents Ltd
1963-12-05
Priority to GB48077/63A
priority
Critical
patent/GB1087300A/en
1964-11-24
Priority to DEC34454A
priority
patent/DE1266800B/en
1964-11-27
Priority to US414117A
priority
patent/US3341652A/en
1964-12-01
Priority to BE656482D
priority
patent/BE656482A/xx
1964-12-02
Priority to CH1557964A
priority
patent/CH439390A/en
1964-12-03
Priority to NL6414032A
priority
patent/NL6414032A/xx
1964-12-04
Priority to FR997385A
priority
patent/FR1415445A/en
1967-10-18
Publication of GB1087300A
publication
Critical
patent/GB1087300A/en
Status
Expired
legal-status
Critical
Current
Links
Espacenet
Global Dossier
Discuss
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
H04N11/14—Transmission systems characterised by the manner in which the individual colour picture signal components are combined using simultaneous signals only in which one signal, modulated in phase and amplitude, conveys colour information and a second signal conveys brightness information, e.g. NTSC-system
H—ELECTRICITY
H04—ELECTRIC COMMUNICATION TECHNIQUE
H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
H04N7/00—Television systems
H04N7/10—Adaptations for transmission by electrical cable
Abstract
1,087,300. Colour television distribution system. COMMUNICATIONS PATENTS Ltd. Dec. 2, 1964 [Dec. 5, 1963], No. 48077/63. Heading H4R. A transmitter for a colour television distribution system applies to the system a modulated carrier wave brightness information component and a suppressed carrier colour information component in which the carrier frequencies differ one from the other by an odd multiple of half the line scan frequency and the frequency of the brightness information component carrier is a whole multiple of the line scan frequency plus or minus an odd multiple of one quarter the frame scan frequency. The system ensures that beats of the carriers or their harmonics of about an even multiple of the line scan frequency differ in frequency by an odd multiple of half the frame scan frequency so that the effect on the reproduced picture is minimal. Alternative programmes may be distributed over separate pairs of conductors in the network, the carrier frequencies differing by a few kc./s. or, if the isolation between the pairs is sufficient, they may be substantially identical. The brightness information signal, which include colour bursts and synchronizing signals, and suppressed carrier wave colour signals may be extracted from broadcast signals and applied to the wired distribution system via a balanced modulator fed with a carrier from an oscillator having an oven-controlled crystal. If the system is applied to a 625 line NTSC system, the carrier frequency may be 5406À2625 kc./s. with a suppressed carrier frequency for the colour information at about 9830 kc./s. A receiver of conventional type for NTSC transmissions is described with reference to Fig. 3 (not shown).
GB48077/63A
1963-12-05
1963-12-05
Improved wired broadcasting systems and apparatus therefor
Expired
GB1087300A
(en)
Priority Applications (7)
Application Number
Priority Date
Filing Date
Title
GB48077/63A
GB1087300A
(en)
1963-12-05
1963-12-05
Improved wired broadcasting systems and apparatus therefor
DEC34454A
DE1266800B
(en)
1963-12-05
1964-11-24
Wire radio system for color television signals of the NTSC type
US414117A
US3341652A
(en)
1963-12-05
1964-11-27
Wired broadcasting systems and apparatus therefor
BE656482D
BE656482A
(en)
1963-12-05
1964-12-01
CH1557964A
CH439390A
(en)
1963-12-05
1964-12-02
Wire radio system for color television transmission
NL6414032A
NL6414032A
(en)
1963-12-05
1964-12-03
FR997385A
FR1415445A
(en)
1963-12-05
1964-12-04
Wired broadcasting system
Applications Claiming Priority (1)
Application Number
Priority Date
Filing Date
Title
GB48077/63A
GB1087300A
(en)
1963-12-05
1963-12-05
Improved wired broadcasting systems and apparatus therefor
Publications (1)
Publication Number
Publication Date
GB1087300A
true
GB1087300A
(en)
1967-10-18
Family
ID=10447287
Family Applications (1)
Application Number
Title
Priority Date
Filing Date
GB48077/63A
Expired
GB1087300A
(en)
1963-12-05
1963-12-05
Improved wired broadcasting systems and apparatus therefor
Country Status (6)
Country
Link
US
(1)
US3341652A
(en)
BE
(1)
BE656482A
(en)
CH
(1)
CH439390A
(en)
DE
(1)
DE1266800B
(en)
GB
(1)
GB1087300A
(en)
NL
(1)
NL6414032A
(en)
Families Citing this family (1)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
GB1165708A
(en)
*
1965-11-11
1969-10-01
Communications Patents Ltd
Improved Wired Braodcasting Systems and Apparatus
Family Cites Families (2)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
DE1079105B
(en)
*
1956-07-10
1960-04-07
Rer Nat Hans Werner Paehr Dr
Color television broadcast system
GB1043231A
(en)
*
1962-05-30
1966-09-21
Communications Patents Ltd
Improved wired broadcasting systems and apparatus therefor
1963
1963-12-05
GB
GB48077/63A
patent/GB1087300A/en
not_active
Expired
1964
1964-11-24
DE
DEC34454A
patent/DE1266800B/en
active
Pending
1964-11-27
US
US414117A
patent/US3341652A/en
not_active
Expired – Lifetime
1964-12-01
BE
BE656482D
patent/BE656482A/xx
unknown
1964-12-02
CH
CH1557964A
patent/CH439390A/en
unknown
1964-12-03
NL
NL6414032A
patent/NL6414032A/xx
unknown
Also Published As
Publication number
Publication date
CH439390A
(en)
1967-07-15
DE1266800B
(en)
1968-04-25
US3341652A
(en)
1967-09-12
NL6414032A
(en)
1965-06-07
BE656482A
(en)
1965-04-01
Similar Documents
Publication
Publication Date
Title
GB1167074A
(en)
1969-10-15
Improvements relating to Television Dropout Compensators.
GB973034A
(en)
1964-10-21
Improvements in stereophonic systems for television broadcasting
US2820091A
(en)
1958-01-14
Color television, frequency control system
US2298863A
(en)
1942-10-13
Image transmission system
US2751431A
(en)
1956-06-19
Color television signalling apparatus
GB1043231A
(en)
1966-09-21
Improved wired broadcasting systems and apparatus therefor
GB1087300A
(en)
1967-10-18
Improved wired broadcasting systems and apparatus therefor
GB815715A
(en)
1959-07-01
Television receiver
GB757670A
(en)
1956-09-19
Frequency modulation system for transmitting colour television signals
GB1043232A
(en)
1966-09-21
Improved wired broadcasting systems and apparatus therefor
US2831916A
(en)
1958-04-22
Single-carrier color television systems
GB675887A
(en)
1952-07-16
Improvements in or relating to television
US2906815A
(en)
1959-09-29
Television relay and like apparatus
GB595138A
(en)
1947-11-27
Improvements in television systems
GB766620A
(en)
1957-01-23
Improvements in or relating to subscription encoding system for color television
GB778406A
(en)
1957-07-10
Improvements in or relating to multiplex television transmission systems and transmitters and receivers for use in such systems
GB836601A
(en)
1960-06-09
Improvements in or relating to transmission systems for television signals
GB746031A
(en)
1956-03-07
Method of and apparatus for the distribution of television signals
GB1056078A
(en)
1967-01-25
Improved wired broadcasting systems and apparatus therefor
US2860178A
(en)
1958-11-11
Multiplex transmission of intelligence
GB1055443A
(en)
1967-01-18
Improved wired broadcasting systems and apparatus therefor
GB606145A
(en)
1948-08-06
Improvements in or relating to television systems
GB604759A
(en)
1948-07-09
Improvements in or relating to television systems and receivers
GB1425341A
(en)
1976-02-18
Wired broadcasting systems
GB797343A
(en)
1958-07-02
Improvements in or relating to colour television systems
None