JPS6429169A - Picture signal processor - Google Patents

Picture signal processor

Info

Publication number
JPS6429169A
JPS6429169A JP62186158A JP18615887A JPS6429169A JP S6429169 A JPS6429169 A JP S6429169A JP 62186158 A JP62186158 A JP 62186158A JP 18615887 A JP18615887 A JP 18615887A JP S6429169 A JPS6429169 A JP S6429169A
Authority
JP
Japan
Prior art keywords
value processing
error
level
value
distribution
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.)
Pending
Application number
JP62186158A
Other languages
Japanese (ja)
Inventor
Toshiharu Kurosawa
Hiroyoshi Tsuchiya
Katsuo Nakazato
Yuji Maruyama
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 Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
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 Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP62186158A priority Critical patent/JPS6429169A/en
Publication of JPS6429169A publication Critical patent/JPS6429169A/en
Pending legal-status Critical Current

Links

Landscapes

  • Facsimile Image Signal Circuits (AREA)

Abstract

PURPOSE:To easily obtain a recording (or display) reproducing picture in matching with the gradation characteristic of a printer (display device) by using a high-order bit of an input correction level so as to use it as a multi-value processing output data and using a multi-value processing output data so as to select a multi-value processing output level thereby applying multi-value processing error arithmetic processing. CONSTITUTION:An error storagemeans 101, an input correction means 105, a multi-value processing output selection means 107 receiving a high-order n-bit of a correction level as a multi-value processing data and selectively outputting a multi-value processing level corresponding to the multi-value processing data, an error arithmetic means 108 obtaining a multi- value error being a difference between a correction level and a multi-value level, and an error distribution means 109 calculating an error distribution corresponding to unprocessed picture elements around the noted picture element from the distribution coefficient distributing the multi-value processing error to unprocessed picture elements around the noted picture element, adding the error distribution to the integrated error of the picture element location corresponding in the error distribution storage means and storing the result again, are provided. Thus, the multi-value processing level corresponding to the multi-value processing output data is selected and outputted to realize the gradation reproduction in matching with the output characteristic.
JP62186158A 1987-07-24 1987-07-24 Picture signal processor Pending JPS6429169A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62186158A JPS6429169A (en) 1987-07-24 1987-07-24 Picture signal processor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62186158A JPS6429169A (en) 1987-07-24 1987-07-24 Picture signal processor

Publications (1)

Publication Number Publication Date
JPS6429169A true JPS6429169A (en) 1989-01-31

Family

ID=16183396

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62186158A Pending JPS6429169A (en) 1987-07-24 1987-07-24 Picture signal processor

Country Status (1)

Country Link
JP (1) JPS6429169A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02210963A (en) * 1989-02-10 1990-08-22 Canon Inc Image processing device
JPH03147480A (en) * 1989-11-02 1991-06-24 Canon Inc Picture processing unit
JPH03192969A (en) * 1989-12-22 1991-08-22 Canon Inc Image processing device
JPH04346575A (en) * 1991-05-24 1992-12-02 Sharp Corp A/d converter for improving picture quality in error distribution system

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55180538U (en) * 1979-06-13 1980-12-25
JPS58182749U (en) * 1982-05-31 1983-12-06 今福　秀夫 Syringe

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55180538U (en) * 1979-06-13 1980-12-25
JPS58182749U (en) * 1982-05-31 1983-12-06 今福　秀夫 Syringe

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02210963A (en) * 1989-02-10 1990-08-22 Canon Inc Image processing device
JPH03147480A (en) * 1989-11-02 1991-06-24 Canon Inc Picture processing unit
JPH03192969A (en) * 1989-12-22 1991-08-22 Canon Inc Image processing device
JPH04346575A (en) * 1991-05-24 1992-12-02 Sharp Corp A/d converter for improving picture quality in error distribution system

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