CA979549A - Telephone image transmission system - Google Patents

Telephone image transmission system

Info

Publication number
CA979549A
CA979549A CA143,677A CA143677A CA979549A CA 979549 A CA979549 A CA 979549A CA 143677 A CA143677 A CA 143677A CA 979549 A CA979549 A CA 979549A
Authority
CA
Canada
Prior art keywords
transmission system
image transmission
telephone image
telephone
transmission
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
CA143,677A
Other languages
English (en)
Other versions
CA143677S (fr
Inventor
John J. Gibson
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
Application granted granted Critical
Publication of CA979549A publication Critical patent/CA979549A/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)
CA143,677A 1971-06-01 1972-06-01 Telephone image transmission system Expired CA979549A (en)

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
CA979549A true CA979549A (en) 1975-12-09

Family

ID=10110745

Family Applications (1)

Application Number Title Priority Date Filing Date
CA143,677A Expired CA979549A (en) 1971-06-01 1972-06-01 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)

Families Citing this family (5)

* 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
GB2257592A (en) * 1991-07-11 1993-01-13 Peter Barry Moss Slow scan conversion circuit
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

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
BE784137A (fr) 1972-09-18
SE389787B (sv) 1976-11-15
GB1393674A (en) 1975-05-07
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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