JPS54125917A - Electron zooming system - Google Patents

Electron zooming system

Info

Publication number
JPS54125917A
JPS54125917A JP3286378A JP3286378A JPS54125917A JP S54125917 A JPS54125917 A JP S54125917A JP 3286378 A JP3286378 A JP 3286378A JP 3286378 A JP3286378 A JP 3286378A JP S54125917 A JPS54125917 A JP S54125917A
Authority
JP
Japan
Prior art keywords
magnification
amount
reduction
clock
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
JP3286378A
Other languages
Japanese (ja)
Inventor
Seishi Kageyama
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 JP3286378A priority Critical patent/JPS54125917A/en
Publication of JPS54125917A publication Critical patent/JPS54125917A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To simplify the zooming device for the system which magnifying and reducing into an optional size of the color TV picture image through the interpolation operation by obtaining the interpolation distance from the input picture or the line signal and then adding the reducing and magnifying amount in sequence.
CONSTITUTION: The reduction or the magnification ratio is decided by fader 71 for m-units of the input picture or the line signal, and the control amount given from fader 71 undergoes A/D conversion through A/D converter 72 to obtain code K1 or K2 which is then written into RAM73 temporarily. On the other hand, horizontal synchronous signal H is applied to counter 74, and the counting is given with addition of picture element sampling clock fs and clock nfs at the reduction and magnification time respectively. Thus, the value preceding 1-line equivalent output of delay circuit T is added every time counter 74 counts magnification amount K to carry out the operation of interpolation distance li=li-1+K, and the output of full adder 75 is isolated into picture element number αi and decimal part βi with every clock fs, Then the reduction or magnification amount is added in sequence through mixer 79.
COPYRIGHT: (C)1979,JPO&Japio
JP3286378A 1978-03-24 1978-03-24 Electron zooming system Pending JPS54125917A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3286378A JPS54125917A (en) 1978-03-24 1978-03-24 Electron zooming system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3286378A JPS54125917A (en) 1978-03-24 1978-03-24 Electron zooming system

Publications (1)

Publication Number Publication Date
JPS54125917A true JPS54125917A (en) 1979-09-29

Family

ID=12370679

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3286378A Pending JPS54125917A (en) 1978-03-24 1978-03-24 Electron zooming system

Country Status (1)

Country Link
JP (1) JPS54125917A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4513725A (en) * 1980-08-29 1985-04-30 Yamaha Hatsudoki Kabushiki Kaisha Device for supplying fuel to a pressure carburetor
JPS6189791A (en) * 1984-10-08 1986-05-07 Sony Corp Solid color image pick-up device
JPS61228784A (en) * 1985-03-07 1986-10-11 Sony Corp Video signal processor
JPS6297476A (en) * 1985-10-21 1987-05-06 Sony Corp Signal interpolating circuit
JPS62154880A (en) * 1985-12-26 1987-07-09 Sony Corp Method for interpolating video signal
JPS6344687A (en) * 1986-08-12 1988-02-25 株式会社日立製作所 Image display device

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4513725A (en) * 1980-08-29 1985-04-30 Yamaha Hatsudoki Kabushiki Kaisha Device for supplying fuel to a pressure carburetor
JPS6189791A (en) * 1984-10-08 1986-05-07 Sony Corp Solid color image pick-up device
JPS61228784A (en) * 1985-03-07 1986-10-11 Sony Corp Video signal processor
JPS6297476A (en) * 1985-10-21 1987-05-06 Sony Corp Signal interpolating circuit
JPS62154880A (en) * 1985-12-26 1987-07-09 Sony Corp Method for interpolating video signal
JPS6344687A (en) * 1986-08-12 1988-02-25 株式会社日立製作所 Image display device

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