JPS56152381A - Special effect device - Google Patents

Special effect device

Info

Publication number
JPS56152381A
JPS56152381A JP5597180A JP5597180A JPS56152381A JP S56152381 A JPS56152381 A JP S56152381A JP 5597180 A JP5597180 A JP 5597180A JP 5597180 A JP5597180 A JP 5597180A JP S56152381 A JPS56152381 A JP S56152381A
Authority
JP
Japan
Prior art keywords
signal
signals
special effect
inputted
gate 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.)
Pending
Application number
JP5597180A
Other languages
Japanese (ja)
Inventor
Yasuo Suzuki
Toshiro Watanabe
Akira Suzuki
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 JP5597180A priority Critical patent/JPS56152381A/en
Publication of JPS56152381A publication Critical patent/JPS56152381A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/222—Studio circuitry; Studio devices; Studio equipment
    • H04N5/262—Studio circuits, e.g. for mixing, switching-over, change of character of image, other special effects ; Cameras specially adapted for the electronic generation of special effects
    • H04N5/272—Means for inserting a foreground image in a background image, i.e. inlay, outlay
    • H04N5/275—Generation of keying signals

Landscapes

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

Abstract

PURPOSE:To enhance the visual effect, by comparing the mixed special effect fundamental wave with three comparison levels to generate two square wave signals and by using these signals as keying signals. CONSTITUTION:Mixed special effect fundamental wave signal (d) is compared with three comparison levels (b), (c) and (d) by comparing circuits 6-8. Signal (g) is inputted to gate circuit 13 to obtain signal (h). Signals (g) and (f) are inputted to gate circuit 12 to obtain signal (i). Signals (f) and (e) are inputted to the gate circuit to generate signal (j). Signal (k) is signal (e) itself. Signals (h), (i), (j), and (k) obtained in this manner are used as keying signals to control the picture, thus obtaining a wipe-synthesized output video signal.
JP5597180A 1980-04-25 1980-04-25 Special effect device Pending JPS56152381A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5597180A JPS56152381A (en) 1980-04-25 1980-04-25 Special effect device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5597180A JPS56152381A (en) 1980-04-25 1980-04-25 Special effect device

Publications (1)

Publication Number Publication Date
JPS56152381A true JPS56152381A (en) 1981-11-25

Family

ID=13013955

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5597180A Pending JPS56152381A (en) 1980-04-25 1980-04-25 Special effect device

Country Status (1)

Country Link
JP (1) JPS56152381A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6043975A (en) * 1983-08-20 1985-03-08 Sony Corp Circular wipe signal generating circuit
JPS62502788A (en) * 1985-03-15 1987-10-22 アムペツクス　コ−ポレ−シヨン Apparatus and method for producing various wipe boats
JPS62247682A (en) * 1985-07-12 1987-10-28 ザ・グラス・バレー・グループ・インコーポレイテッド Composite video signal generator

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6043975A (en) * 1983-08-20 1985-03-08 Sony Corp Circular wipe signal generating circuit
JPH0527304B2 (en) * 1983-08-20 1993-04-20 Sony Corp
JPS62502788A (en) * 1985-03-15 1987-10-22 アムペツクス　コ−ポレ−シヨン Apparatus and method for producing various wipe boats
JPS62247682A (en) * 1985-07-12 1987-10-28 ザ・グラス・バレー・グループ・インコーポレイテッド Composite video signal generator
JPH0423992B2 (en) * 1985-07-12 1992-04-23 Grass Valley Group

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