GB1348108A - Transmission of television images - Google Patents

Transmission of television images

Info

Publication number
GB1348108A
GB1348108A GB3415072A GB3415072A GB1348108A GB 1348108 A GB1348108 A GB 1348108A GB 3415072 A GB3415072 A GB 3415072A GB 3415072 A GB3415072 A GB 3415072A GB 1348108 A GB1348108 A GB 1348108A
Authority
GB
United Kingdom
Prior art keywords
store
line
picture
read out
normal speed
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
Application number
GB3415072A
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.)
Grundig EMV Elektromechanische Versuchsanstalt Max Grundig GmbH
Original Assignee
Grundig EMV Elektromechanische Versuchsanstalt Max Grundig GmbH
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.)
Filing date
Publication date
Application filed by Grundig EMV Elektromechanische Versuchsanstalt Max Grundig GmbH filed Critical Grundig EMV Elektromechanische Versuchsanstalt Max Grundig GmbH
Publication of GB1348108A publication Critical patent/GB1348108A/en
Expired legal-status Critical Current

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

Abstract

1348108 Television GRUNDIG EMVELEKTRO - MECHANISCHE VERSUCHSANSTALT MAX GRUNDIG 21 July 1972 [23 July 1971] 34150/72 Heading H4F To reduce the bandwidth of a normal television signal S1 so that it can be transmitted over the narrow bandwidth line 5, the signal S1 is stored at normal speed in magnetic tape store 2 until the whole picture has been recorded, the picture then being read out (S2/S3) one section at a time, e.g. one line at a time-into a first intermediate store 4 and the line in store 4 then being read out, at a reduced rate, into line 5. At the receiver station the reduced rate picture section is stored in second intermediate store 6 from which it is read-out at normal speed into a second magnetic tape store 7. When store 7 contains the whole picture, it is read out at normal speed to display terminal 8.
GB3415072A 1971-07-23 1972-07-21 Transmission of television images Expired GB1348108A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19712136794 DE2136794C3 (en) 1971-07-23 1971-07-23 A method for transmitting a television still picture over a narrow band channel, preferably a telephone channel

Publications (1)

Publication Number Publication Date
GB1348108A true GB1348108A (en) 1974-03-13

Family

ID=5814548

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3415072A Expired GB1348108A (en) 1971-07-23 1972-07-21 Transmission of television images

Country Status (2)

Country Link
DE (1) DE2136794C3 (en)
GB (1) GB1348108A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57125590A (en) * 1981-01-28 1982-08-04 Nec Corp Still picture transmitter
DE3534034A1 (en) * 1985-09-24 1987-04-02 Siemens Ag Method and arrangement for transmitting individual images via a long-distance line

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2955159A (en) * 1958-10-01 1960-10-04 Itt Narrow-band video communication system
DE1227069B (en) * 1959-01-15 1966-10-20 Ulrich Fusban Dipl Ing Method and arrangement for narrowing the frequency band when transmitting communication signals
GB1095452A (en) * 1963-12-27 1900-01-01
US3502815A (en) * 1967-03-17 1970-03-24 Xerox Corp Tone signalling bandwidth compression system
DE1907700C3 (en) * 1969-02-15 1978-05-11 Grundig E.M.V. Elektro-Mechanische Versuchsanstalt Max Grundig, 8510 Fuerth Method for the transmission of a television still picture over a narrow band channel, preferably a telephone channel

Also Published As

Publication number Publication date
DE2136794A1 (en) 1973-02-01
DE2136794B2 (en) 1973-06-20
DE2136794C3 (en) 1986-02-13

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee