GB1393674A - Telephone image transmission system - Google Patents

Telephone image transmission system

Info

Publication number
GB1393674A
GB1393674A GB1833771A GB1833771A GB1393674A GB 1393674 A GB1393674 A GB 1393674A GB 1833771 A GB1833771 A GB 1833771A GB 1833771 A GB1833771 A GB 1833771A GB 1393674 A GB1393674 A GB 1393674A
Authority
GB
United Kingdom
Prior art keywords
signal
column
video
transmitted
sample
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
GB1833771A
Other languages
English (en)
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
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 RCA Corp filed Critical RCA Corp
Priority to GB1833771A priority Critical patent/GB1393674A/en
Priority to BE784137A priority patent/BE784137A/xx
Priority to SE7207090A priority patent/SE389787C/xx
Priority to AU42884/72A priority patent/AU474542B2/en
Priority to IT2505672A priority patent/IT956003B/it
Priority to NL7207370A priority patent/NL7207370A/xx
Priority to FR7219529A priority patent/FR2140132B1/fr
Priority to BR352872A priority patent/BR7203528D0/pt
Priority to DE19722226614 priority patent/DE2226614C3/de
Priority to CA143,677A priority patent/CA979549A/en
Priority to JP5475572A priority patent/JPS5726037B1/ja
Publication of GB1393674A publication Critical patent/GB1393674A/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
    • H04N7/125—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 the signal segment being a picture element

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Television Systems (AREA)
  • Closed-Circuit Television Systems (AREA)
GB1833771A 1971-06-01 1971-06-01 Telephone image transmission system Expired GB1393674A (en)

Priority Applications (11)

Application Number Priority Date Filing Date Title
GB1833771A GB1393674A (en) 1971-06-01 1971-06-01 Telephone image transmission system
BE784137A BE784137A (fr) 1971-06-01 1972-05-29 Systeme de transmission d'images par telephone
SE7207090A SE389787C (sv) 1971-06-01 1972-05-30 Bildtransmissionsanleggning
AU42884/72A AU474542B2 (en) 1971-06-01 1972-05-30 Telephone image transmission system
IT2505672A IT956003B (it) 1971-06-01 1972-05-30 Sistema telefonico per la trasmis sione di immagini
NL7207370A NL7207370A (enExample) 1971-06-01 1972-05-31
FR7219529A FR2140132B1 (enExample) 1971-06-01 1972-05-31
BR352872A BR7203528D0 (pt) 1971-06-01 1972-05-31 Sistema de transmissao de imagens
DE19722226614 DE2226614C3 (de) 1971-06-01 1972-05-31 Bildübertragungseinrichtung zur Übertragung von Bildsignalen über eine Nachrichtenstrecke mit auf Tonfrequenzen begrenzter Bandbreite
CA143,677A CA979549A (en) 1971-06-01 1972-06-01 Telephone image transmission system
JP5475572A JPS5726037B1 (enExample) 1971-06-01 1972-06-01

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1833771A GB1393674A (en) 1971-06-01 1971-06-01 Telephone image transmission system

Publications (1)

Publication Number Publication Date
GB1393674A true GB1393674A (en) 1975-05-07

Family

ID=10110745

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1833771A Expired GB1393674A (en) 1971-06-01 1971-06-01 Telephone image transmission system

Country Status (11)

Country Link
JP (1) JPS5726037B1 (enExample)
AU (1) AU474542B2 (enExample)
BE (1) BE784137A (enExample)
BR (1) BR7203528D0 (enExample)
CA (1) CA979549A (enExample)
DE (1) DE2226614C3 (enExample)
FR (1) FR2140132B1 (enExample)
GB (1) GB1393674A (enExample)
IT (1) IT956003B (enExample)
NL (1) NL7207370A (enExample)
SE (1) SE389787C (enExample)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2257592A (en) * 1991-07-11 1993-01-13 Peter Barry Moss Slow scan conversion circuit

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3843837A (en) * 1973-08-10 1974-10-22 Rca Corp Apparatus for generating sample pulses in a telephone image transmission system
IL82539A0 (en) * 1987-05-15 1987-11-30 Medaon Ltd Video communication system and phase or frequency modulator included therein
DE4205417A1 (de) * 1992-02-22 1993-08-26 Sel Alcatel Ag Verfahren zum breitbandigen uebertragen von videosignalen sowie schaltungsanordnung und uebertragungsanlage dafuer
WO2000051350A1 (en) 1999-02-22 2000-08-31 Terk Technologies Corp. Video transmission system and method utilizing phone lines in multiple unit dwellings

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE546828A (enExample) * 1955-05-05
US2955159A (en) * 1958-10-01 1960-10-04 Itt Narrow-band video communication system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2257592A (en) * 1991-07-11 1993-01-13 Peter Barry Moss Slow scan conversion circuit

Also Published As

Publication number Publication date
DE2226614C3 (de) 1975-07-10
FR2140132A1 (enExample) 1973-01-12
DE2226614A1 (de) 1972-12-14
IT956003B (it) 1973-10-10
CA979549A (en) 1975-12-09
BE784137A (fr) 1972-09-18
SE389787B (sv) 1976-11-15
SE389787C (sv) 1980-02-18
BR7203528D0 (pt) 1973-06-28
AU4288472A (en) 1974-02-07
NL7207370A (enExample) 1972-12-05
AU474542B2 (en) 1976-07-29
FR2140132B1 (enExample) 1978-03-03
DE2226614B2 (de) 1974-12-05
JPS5726037B1 (enExample) 1982-06-02

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Legal Events

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