JPS5656068A - Conversion system for number of video signal - Google Patents

Conversion system for number of video signal

Info

Publication number
JPS5656068A
JPS5656068A JP13181279A JP13181279A JPS5656068A JP S5656068 A JPS5656068 A JP S5656068A JP 13181279 A JP13181279 A JP 13181279A JP 13181279 A JP13181279 A JP 13181279A JP S5656068 A JPS5656068 A JP S5656068A
Authority
JP
Japan
Prior art keywords
information
output
signal
picture signals
input
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
JP13181279A
Other languages
Japanese (ja)
Inventor
Seizo Ueno
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 JP13181279A priority Critical patent/JPS5656068A/en
Publication of JPS5656068A publication Critical patent/JPS5656068A/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
    • H04N1/40—Picture signal circuits
    • H04N1/40068—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)
  • Image Processing (AREA)
  • Editing Of Facsimile Originals (AREA)

Abstract

PURPOSE:To solve signal absence and the jitters by matching input and output picture signals in timing by storing permit information or inhibition information in respective addresses at a prescribed ratio evenly and by extracting the output signal through gating with its readout information. CONSTITUTION:When a B4 size original is read out at dot density P and readout information is recorded on A4 size recording paper at dot density P, l=256. and m=216.P, resulting in l/(l-m)=27/5. The capacity of memory 7 should only be enough to satisfy the sum of the numerator and denominator of the ratio reduced to a maximum and 32 bits in this case. Further, permit information H and inhibition information L are stored nearly uniformly. Then, the count value is sent as an address assignment input to memory 7 of counter 6 successively. With this readout information, AND gate 7 is gated and at the rise of the output of gate 7, the input picture signal is read by D type FF5 and latched there, so that an output picture signal obtaind by converting (l) picture signals for one line into (m) picture signals for one line can be obtained.
JP13181279A 1979-10-15 1979-10-15 Conversion system for number of video signal Pending JPS5656068A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13181279A JPS5656068A (en) 1979-10-15 1979-10-15 Conversion system for number of video signal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13181279A JPS5656068A (en) 1979-10-15 1979-10-15 Conversion system for number of video signal

Publications (1)

Publication Number Publication Date
JPS5656068A true JPS5656068A (en) 1981-05-16

Family

ID=15066676

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13181279A Pending JPS5656068A (en) 1979-10-15 1979-10-15 Conversion system for number of video signal

Country Status (1)

Country Link
JP (1) JPS5656068A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5875277A (en) * 1981-10-29 1983-05-06 Yokogawa Hokushin Electric Corp Pattern recognizing device
JPS59105769A (en) * 1982-12-10 1984-06-19 Toshiba Corp Transmission system of still picture information
JPS63187767A (en) * 1987-01-29 1988-08-03 Ricoh Co Ltd image reading device
JPS63188275A (en) * 1987-01-30 1988-08-03 Matsushita Electric Ind Co Ltd Image processing device

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52117510A (en) * 1976-03-30 1977-10-03 Canon Inc Signal conversion unit

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52117510A (en) * 1976-03-30 1977-10-03 Canon Inc Signal conversion unit

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5875277A (en) * 1981-10-29 1983-05-06 Yokogawa Hokushin Electric Corp Pattern recognizing device
JPS59105769A (en) * 1982-12-10 1984-06-19 Toshiba Corp Transmission system of still picture information
JPS63187767A (en) * 1987-01-29 1988-08-03 Ricoh Co Ltd image reading device
JPS63188275A (en) * 1987-01-30 1988-08-03 Matsushita Electric Ind Co Ltd Image processing device

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