CA1057390A - Method and apparatus for time compression of facsimile transmissions - Google Patents

Method and apparatus for time compression of facsimile transmissions

Info

Publication number
CA1057390A
CA1057390A CA216,102A CA216102A CA1057390A CA 1057390 A CA1057390 A CA 1057390A CA 216102 A CA216102 A CA 216102A CA 1057390 A CA1057390 A CA 1057390A
Authority
CA
Canada
Prior art keywords
scanning rate
dark
document
scanning
signal
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
CA216,102A
Other languages
English (en)
French (fr)
Other versions
CA216102S (en
Inventor
Herbert P. Ford (Jr.)
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.)
ExxonMobil Technology and Engineering Co
Original Assignee
Exxon Research and Engineering Co
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 Exxon Research and Engineering Co filed Critical Exxon Research and Engineering Co
Application granted granted Critical
Publication of CA1057390A publication Critical patent/CA1057390A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/04—Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa
    • H04N1/17—Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa the scanning speed being dependent on content of picture

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Facsimile Scanning Arrangements (AREA)
CA216,102A 1974-03-08 1974-12-16 Method and apparatus for time compression of facsimile transmissions Expired CA1057390A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/449,514 US3955045A (en) 1974-03-08 1974-03-08 Method and apparatus for time compression of facsimile transmissions

Publications (1)

Publication Number Publication Date
CA1057390A true CA1057390A (en) 1979-06-26

Family

ID=23784439

Family Applications (1)

Application Number Title Priority Date Filing Date
CA216,102A Expired CA1057390A (en) 1974-03-08 1974-12-16 Method and apparatus for time compression of facsimile transmissions

Country Status (9)

Country Link
US (1) US3955045A (enExample)
JP (1) JPS50122817A (enExample)
CA (1) CA1057390A (enExample)
DE (1) DE2502921A1 (enExample)
FR (1) FR2263649B1 (enExample)
GB (1) GB1495299A (enExample)
IT (1) IT1028407B (enExample)
MX (1) MX144382A (enExample)
NL (1) NL7501598A (enExample)

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5295113A (en) * 1976-02-05 1977-08-10 Fujitsu Ltd Band compression transmission system
US4095248A (en) * 1976-06-16 1978-06-13 Faxon Communications Corporation Redundancy reduction system for facsimile transceivers
US4228466A (en) * 1978-03-13 1980-10-14 Exxon Research & Engineering Co. Transmission mode signaling between a facsimile transmitter and a facsimile receiver
JPS55149569A (en) * 1979-05-11 1980-11-20 Jujo Eng Kk Control signal transmission method in facsimile
JPS5644259A (en) * 1979-09-20 1981-04-23 Canon Inc Copying and recording device
JPS5644260A (en) * 1979-09-20 1981-04-23 Canon Inc Copying and recording device
US4442460A (en) * 1980-12-10 1984-04-10 Fuji Xerox Co., Ltd. Copying machine
JPS5797766A (en) * 1980-12-10 1982-06-17 Fuji Xerox Co Ltd Copying machine
JPS5797770A (en) * 1980-12-10 1982-06-17 Fuji Xerox Co Ltd Copying machine
US4551766A (en) * 1982-03-08 1985-11-05 Halliburton Company Optical reader
US4495639A (en) * 1982-03-08 1985-01-22 Halliburton Company Electronic data compressor
US4531189A (en) * 1982-03-08 1985-07-23 Halliburton Company Data conversion, communication and analysis system
US4413287A (en) * 1982-04-14 1983-11-01 Xerox Corporation White line skipping
GB2148653B (en) * 1983-10-22 1987-01-28 Standard Telephones Cables Ltd Picture phone apparatus
US4775859A (en) * 1985-10-18 1988-10-04 Hilliard-Lyons Patent Management, Inc. Programmable interlace with skip and contrast enhancement in long persistence display systems
US5021877A (en) * 1987-10-27 1991-06-04 Brother Kogyo Kabushiki Kaisha Optical image reading apparatus capable of reading multi-colored original
US5374947A (en) * 1992-05-18 1994-12-20 Fuji Xerox Co., Ltd. Laser beam printer capable of changing scanning density and paper transport speed
CZ286929B6 (en) * 1993-08-05 2000-08-16 Motorola Inc Telefax communication process within a communication system with selective calling and communication system for making the same
RU2213360C1 (ru) * 2002-02-20 2003-09-27 Институт геофизики СО РАН Способ оценки типа жидкости, насыщающей горные породы
CA2996231C (en) * 2017-02-24 2021-07-06 Institut National D'optique Scan-based imaging with variable scan speed using predictions of region-of-interest positions

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3670099A (en) * 1968-03-18 1972-06-13 Itek Corp Facsimile system utilizing pre-scan detection of indicia

Also Published As

Publication number Publication date
FR2263649A1 (enExample) 1975-10-03
JPS50122817A (enExample) 1975-09-26
US3955045A (en) 1976-05-04
FR2263649B1 (enExample) 1980-11-14
IT1028407B (it) 1979-01-30
DE2502921A1 (de) 1975-09-11
NL7501598A (nl) 1975-09-10
MX144382A (es) 1981-10-05
GB1495299A (en) 1977-12-14

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