GB1113373A – Improvements in or relating to television apparatus
– Google Patents
GB1113373A – Improvements in or relating to television apparatus
– Google Patents
Improvements in or relating to television apparatus
Info
Publication number
GB1113373A
GB1113373A
GB5182265A
GB5182265A
GB1113373A
GB 1113373 A
GB1113373 A
GB 1113373A
GB 5182265 A
GB5182265 A
GB 5182265A
GB 5182265 A
GB5182265 A
GB 5182265A
GB 1113373 A
GB1113373 A
GB 1113373A
Authority
GB
United Kingdom
Prior art keywords
line
amplifier
signals
amplified
frequency
Prior art date
1965-12-07
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
GB5182265A
Inventor
George Schiess
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.)
RCA Corp
Original Assignee
RCA Corp
Radio Corporation of America
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.)
1965-12-07
Filing date
1965-12-07
Publication date
1968-05-15
1965-12-07
Application filed by RCA Corp, Radio Corporation of America
filed
Critical
RCA Corp
1965-12-07
Priority to GB5182265A
priority
Critical
patent/GB1113373A/en
1966-12-01
Priority to FR85793A
priority
patent/FR1504123A/en
1966-12-06
Priority to BE690778D
priority
patent/BE690778A/xx
1968-05-15
Publication of GB1113373A
publication
Critical
patent/GB1113373A/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
H04N5/00—Details of television systems
H04N5/44—Receiver circuitry for the reception of television signals according to analogue transmission standards
H04N5/46—Receiver circuitry for the reception of television signals according to analogue transmission standards for receiving on more than one standard at will
Abstract
1,113,373. Multiplex radio signalling. RADIO CORPORATION OF AMERICA. 15 Nov., 1966 [7 Dec., 1965], No. 51822/65. Heading H4L. In a dual standard television receiver, such as one for the reception of 405-line V.H.F. signals and 625-line U.H.F. signals, separate tuners and intermediate frequency amplifiers are provided for each kind of signal, but the sound components at intermediate frequency of one kind of signal only are extracted and are amplified in the I.F. amplifier for the other kind of signal. As described, video signals at intermediate frequencies from the output of a V.H.F. 405-line tuner 10, Fig. 1, are amplified, detected, and further amplified in units 14, 22, 24, respectively. Audio signals at intermediate frequency are extracted by a tuned circuit (Fig. 2, not shown) and are taken to the input of a 625-line I.F. amplifier 16. The intermediate frequencies are so arranged that the 405-line sound carrier and its side-bands fall within the pass band of the 625-line intermediate amplifier and that the 405 video carrier and its sidebands lower in frequency than the sound carrier fall outside the pass band of the said amplifier. A unit 20 detects the output from the amplifier 16 and produces a 405-line audio frequency output. When the receiver is switched to 625- line working, the detector 20 produces 625-line sound signals at intercarrier frequency, and these are further amplified in a unit 26 and are finally detected in a unit 28. The 625-line video signals at intermediate frequencies from the output of the I.F. amplifier 16 are detected in a video detector 18 and are amplified in the unit 24, which is switched from the 405-line detector 22 when 625-line signals are being received.
GB5182265A
1965-12-07
1965-12-07
Improvements in or relating to television apparatus
Expired
GB1113373A
(en)
Priority Applications (3)
Application Number
Priority Date
Filing Date
Title
GB5182265A
GB1113373A
(en)
1965-12-07
1965-12-07
Improvements in or relating to television apparatus
FR85793A
FR1504123A
(en)
1965-12-07
1966-12-01
Improvements to television receivers
BE690778D
BE690778A
(en)
1965-12-07
1966-12-06
Applications Claiming Priority (1)
Application Number
Priority Date
Filing Date
Title
GB5182265A
GB1113373A
(en)
1965-12-07
1965-12-07
Improvements in or relating to television apparatus
Publications (1)
Publication Number
Publication Date
GB1113373A
true
GB1113373A
(en)
1968-05-15
Family
ID=10461502
Family Applications (1)
Application Number
Title
Priority Date
Filing Date
GB5182265A
Expired
GB1113373A
(en)
1965-12-07
1965-12-07
Improvements in or relating to television apparatus
Country Status (3)
Country
Link
BE
(1)
BE690778A
(en)
FR
(1)
FR1504123A
(en)
GB
(1)
GB1113373A
(en)
Cited By (1)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
DE3525556A1
(en)
*
1984-07-18
1986-01-30
Alps Electric Co., Ltd., Tokio/Tokyo
VOTING
Families Citing this family (1)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
FR2367394A1
(en)
*
1976-10-11
1978-05-05
Pizon Bros
Multi-standard television receiver circuit – automatically switches to UHF or VHF operation changing both IF and output stages
1965
1965-12-07
GB
GB5182265A
patent/GB1113373A/en
not_active
Expired
1966
1966-12-01
FR
FR85793A
patent/FR1504123A/en
not_active
Expired
1966-12-06
BE
BE690778D
patent/BE690778A/xx
unknown
Cited By (1)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
DE3525556A1
(en)
*
1984-07-18
1986-01-30
Alps Electric Co., Ltd., Tokio/Tokyo
VOTING
Also Published As
Publication number
Publication date
BE690778A
(en)
1967-05-16
FR1504123A
(en)
1967-12-01
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