CA942679A - Circuitry for distinguishing between background and intelligence areas on a document - Google Patents

Circuitry for distinguishing between background and intelligence areas on a document

Info

Publication number
CA942679A
CA942679A CA102,072A CA102072A CA942679A CA 942679 A CA942679 A CA 942679A CA 102072 A CA102072 A CA 102072A CA 942679 A CA942679 A CA 942679A
Authority
CA
Canada
Prior art keywords
distinguishing
circuitry
document
background
intelligence
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
CA102,072A
Other languages
English (en)
Other versions
CA102072S (en
Inventor
David R. Shuey
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.)
Xerox Corp
Original Assignee
Xerox 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 Xerox Corp filed Critical Xerox Corp
Application granted granted Critical
Publication of CA942679A publication Critical patent/CA942679A/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
    • H04N1/40—Picture signal circuits
    • H04N1/403—Discrimination between the two tones in the picture signal of a two-tone original

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Facsimile Image Signal Circuits (AREA)
  • Facsimile Scanning Arrangements (AREA)
  • Facsimile Heads (AREA)
  • Image Input (AREA)
CA102,072A 1970-05-06 1971-01-06 Circuitry for distinguishing between background and intelligence areas on a document Expired CA942679A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US3504870A 1970-05-06 1970-05-06

Publications (1)

Publication Number Publication Date
CA942679A true CA942679A (en) 1974-02-26

Family

ID=21880306

Family Applications (1)

Application Number Title Priority Date Filing Date
CA102,072A Expired CA942679A (en) 1970-05-06 1971-01-06 Circuitry for distinguishing between background and intelligence areas on a document

Country Status (7)

Country Link
JP (1) JPS5244171B1 (OSRAM)
BE (1) BE766778A (OSRAM)
CA (1) CA942679A (OSRAM)
DE (1) DE2122481C2 (OSRAM)
FR (1) FR2088395B1 (OSRAM)
GB (1) GB1310337A (OSRAM)
NL (1) NL7105991A (OSRAM)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56123176A (en) * 1980-03-05 1981-09-28 Ricoh Co Ltd Processing method for picture signal

Also Published As

Publication number Publication date
NL7105991A (OSRAM) 1971-11-09
DE2122481A1 (de) 1971-11-25
FR2088395A1 (OSRAM) 1972-01-07
JPS5244171B1 (OSRAM) 1977-11-05
DE2122481C2 (de) 1983-08-04
BE766778A (fr) 1971-11-08
FR2088395B1 (OSRAM) 1976-12-03
GB1310337A (en) 1973-03-21

Similar Documents

Publication Publication Date Title
CA967669A (en) Microfilm reader
CA953898A (en) Dryshaver construction and operation
CA942708A (en) Press type closure
CA934151A (en) Drawing and teaching machine
AU467536B2 (en) Thio-substituted a zethidinones and thiazolinazetidinones
CA956588A (en) Printing assemblies and method
CA942679A (en) Circuitry for distinguishing between background and intelligence areas on a document
CA940794A (en) Process and agents having an influence on the weather
CA974140A (en) Process and agents having an influence on the weather
CA955254A (en) Azolindolines and azolindoline dyestuffs
CA977143A (en) Information device
CA963855A (en) Integral carrier and closures
CA847688A (en) Low profile embossed-debossed printing on a closure
CA950985A (en) Multi-signal encoder and transponder
CA939179A (en) Dispositif d'embrayage coupleur a courroie
CA839482A (en) Information comparing and summarizing machine
CA887411A (en) On track-off track tamper
CA903126A (en) Tabulator stop set and clear mechanism
CA859660A (en) Copy-sheet and method
CA858164A (en) Ferme-porte a frein
CA853015A (en) Up and down binary counter
CA858844A (en) Printing on packages
AU456298B2 (en) Tapemeasure and rule
CA878311A (en) Tamperproof closures
AU439980B2 (en) Microfilm reader