JPS56110382A - Emphasizing circuit of isolated picture element - Google Patents

Emphasizing circuit of isolated picture element

Info

Publication number
JPS56110382A
JPS56110382A JP1201480A JP1201480A JPS56110382A JP S56110382 A JPS56110382 A JP S56110382A JP 1201480 A JP1201480 A JP 1201480A JP 1201480 A JP1201480 A JP 1201480A JP S56110382 A JPS56110382 A JP S56110382A
Authority
JP
Japan
Prior art keywords
picture element
row
circuit
isolated
picture
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
JP1201480A
Other languages
Japanese (ja)
Inventor
Toshio Miyagawa
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP1201480A priority Critical patent/JPS56110382A/en
Publication of JPS56110382A publication Critical patent/JPS56110382A/en
Pending 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
    • H04N1/387—Composing, repositioning or otherwise geometrically modifying originals
    • H04N1/393—Enlarging or reducing
    • H04N1/3935—Enlarging or reducing with modification of image resolution, i.e. determining the values of picture elements at new relative positions

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Facsimile Image Signal Circuits (AREA)

Abstract

PURPOSE:To prevent the deterioration of the picture quality for a facsimile device that performs a reduction conversion of the number of picture elements, by adding the isolated picture element which is overlooked while sampling the picture element to the final picture element row. CONSTITUTION:The picture element row E read out through a photoelectric conversion part is sampled by the sampling circuit 11 to be turned into the picture element row G that received a reduction conversion. The circuit 11 supplies the overlooked detection signal to the overlook detection circuit 13 for isolated picture element in case the picture element before reduction conversion exists in two units in a period of the sampling clock F for the above-mentioned sampling. Then the picture element row I having a delay equivalent to a picture element is taken out of the row E by the memory 14, thus obtaining an exclusive OR to the row E. Thus the changing point is detected 15, and this output is supplied to the circuit 13 and then applied to an AND circuit along with the above-mentioned detection signal to detect the overlooked isolated picture element. This isolated picture element is applied to the final picture element row. In such a way, the picture quality can be enhanced.
JP1201480A 1980-02-05 1980-02-05 Emphasizing circuit of isolated picture element Pending JPS56110382A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1201480A JPS56110382A (en) 1980-02-05 1980-02-05 Emphasizing circuit of isolated picture element

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1201480A JPS56110382A (en) 1980-02-05 1980-02-05 Emphasizing circuit of isolated picture element

Publications (1)

Publication Number Publication Date
JPS56110382A true JPS56110382A (en) 1981-09-01

Family

ID=11793731

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1201480A Pending JPS56110382A (en) 1980-02-05 1980-02-05 Emphasizing circuit of isolated picture element

Country Status (1)

Country Link
JP (1) JPS56110382A (en)

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