JPS57152288A - Convergence correction device - Google Patents

Convergence correction device

Info

Publication number
JPS57152288A
JPS57152288A JP3662581A JP3662581A JPS57152288A JP S57152288 A JPS57152288 A JP S57152288A JP 3662581 A JP3662581 A JP 3662581A JP 3662581 A JP3662581 A JP 3662581A JP S57152288 A JPS57152288 A JP S57152288A
Authority
JP
Japan
Prior art keywords
memory device
signal
address
convergence
convergency
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
JP3662581A
Other languages
Japanese (ja)
Inventor
Takumi Karasawa
Teruo Yokosanai
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP3662581A priority Critical patent/JPS57152288A/en
Publication of JPS57152288A publication Critical patent/JPS57152288A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/12—Picture reproducers
    • H04N9/16—Picture reproducers using cathode ray tubes
    • H04N9/28—Arrangements for convergence or focusing

Abstract

PURPOSE:To correct moving convergency accurately for a short time by delaying a video signal of each color for a prescribed period by the data of scanning time corresponding the amount of convergence shearing stored in a memory device. CONSTITUTION:A horizontal synchronizing signal (hs) and a vertical synchronizing signal (vs) are inputted to an address decoder 26 and an address signal (as) corresponding to the scanning position of a picture is sent from the decoder 26 to a memory device 20. Data of scanning time difference corresponding to the amount of convergence shearing which is stored in the memory device 20 from an prescribed address on the basis of the signal (as) are read out from the memory device 20 and sent to variable delay circuits 22R, 22G, 22B as delay command signals dsR, dsG. A video signal of each color is delayed for a prescribed period by the delay command signals and 3 light emitting positions of a picture element are made consist with each other in every division, correcting convergency on the whole screen accurately.
JP3662581A 1981-03-16 1981-03-16 Convergence correction device Pending JPS57152288A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3662581A JPS57152288A (en) 1981-03-16 1981-03-16 Convergence correction device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3662581A JPS57152288A (en) 1981-03-16 1981-03-16 Convergence correction device

Publications (1)

Publication Number Publication Date
JPS57152288A true JPS57152288A (en) 1982-09-20

Family

ID=12475000

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3662581A Pending JPS57152288A (en) 1981-03-16 1981-03-16 Convergence correction device

Country Status (1)

Country Link
JP (1) JPS57152288A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5957590A (en) * 1982-09-27 1984-04-03 Toshiba Corp Variable delay device for delay time
EP0271906A2 (en) * 1986-12-17 1988-06-22 Kabushiki Kaisha Toshiba Color image display tube apparatus

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS531014A (en) * 1976-06-25 1978-01-07 Nippon Gakki Seizo Kk Electronic musical instrument

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS531014A (en) * 1976-06-25 1978-01-07 Nippon Gakki Seizo Kk Electronic musical instrument

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5957590A (en) * 1982-09-27 1984-04-03 Toshiba Corp Variable delay device for delay time
EP0271906A2 (en) * 1986-12-17 1988-06-22 Kabushiki Kaisha Toshiba Color image display tube apparatus
US4849676A (en) * 1986-12-17 1989-07-18 Kabushiki Kaisha Toshiba Color image display tube apparatus

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