JPS6323708B2 - - Google Patents

Info

Publication number
JPS6323708B2
JPS6323708B2 JP58111284A JP11128483A JPS6323708B2 JP S6323708 B2 JPS6323708 B2 JP S6323708B2 JP 58111284 A JP58111284 A JP 58111284A JP 11128483 A JP11128483 A JP 11128483A JP S6323708 B2 JPS6323708 B2 JP S6323708B2
Authority
JP
Japan
Prior art keywords
density
parameter
document
image signal
circuit
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
JP58111284A
Other languages
English (en)
Japanese (ja)
Other versions
JPS603272A (ja
Inventor
Masumi Mochizuki
Naotoshi Ito
Tsuneo Takei
Hideo Uchida
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.)
Panasonic System Solutions Japan Co Ltd
Original Assignee
Matsushita Graphic Communication Systems Inc
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 Matsushita Graphic Communication Systems Inc filed Critical Matsushita Graphic Communication Systems Inc
Priority to JP58111284A priority Critical patent/JPS603272A/ja
Publication of JPS603272A publication Critical patent/JPS603272A/ja
Publication of JPS6323708B2 publication Critical patent/JPS6323708B2/ja
Granted 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
    • H04N1/407—Control or modification of tonal gradation or of extreme levels, e.g. background level
    • H04N1/4076—Control or modification of tonal gradation or of extreme levels, e.g. background level dependent on references outside the picture

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Facsimile Image Signal Circuits (AREA)
JP58111284A 1983-06-20 1983-06-20 原稿読取装置 Granted JPS603272A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP58111284A JPS603272A (ja) 1983-06-20 1983-06-20 原稿読取装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP58111284A JPS603272A (ja) 1983-06-20 1983-06-20 原稿読取装置

Publications (2)

Publication Number Publication Date
JPS603272A JPS603272A (ja) 1985-01-09
JPS6323708B2 true JPS6323708B2 (en, 2012) 1988-05-17

Family

ID=14557324

Family Applications (1)

Application Number Title Priority Date Filing Date
JP58111284A Granted JPS603272A (ja) 1983-06-20 1983-06-20 原稿読取装置

Country Status (1)

Country Link
JP (1) JPS603272A (en, 2012)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02101410U (en, 2012) * 1989-01-30 1990-08-13

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02101410U (en, 2012) * 1989-01-30 1990-08-13

Also Published As

Publication number Publication date
JPS603272A (ja) 1985-01-09

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