JPS56169985A - Digital convergence device - Google Patents

Digital convergence device

Info

Publication number
JPS56169985A
JPS56169985A JP7481880A JP7481880A JPS56169985A JP S56169985 A JPS56169985 A JP S56169985A JP 7481880 A JP7481880 A JP 7481880A JP 7481880 A JP7481880 A JP 7481880A JP S56169985 A JPS56169985 A JP S56169985A
Authority
JP
Japan
Prior art keywords
screen
center
convergence
memory
adjusting
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
JP7481880A
Other languages
Japanese (ja)
Inventor
Susumu Tsujihara
Katsumi Morita
Kunihiko Mototani
Minoru Takeda
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 JP7481880A priority Critical patent/JPS56169985A/en
Publication of JPS56169985A publication Critical patent/JPS56169985A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N17/00—Diagnosis, testing or measuring for television systems or their details
    • H04N17/04—Diagnosis, testing or measuring for television systems or their details for receivers

Abstract

PURPOSE:To increase the accuracy of adjustment at the center of screen without increasing the memory capacity for convergence adjusting, by changing the density of distribution of the adjusting point at the center and circumference of the screen, in adjusting the convergence of a color TV receiver. CONSTITUTION:A control panel 1 is provided with a cursor key which designates the convergence correction for the position on a screen and a write-in key which writes in data to a 1 frame memory 3, and the convergence correction data for the full adjusting point is written in the memory 3 via a data use reversible counter 2 by changing the density of distrubution for the center of screen and the circumference for the adjustment point. The information in the memory 3 is read out by switching a screen center readout address counter 17 and a screen circumference readout address counter 18, it is in D/A converter 9, smoothed in an LPF10 for convergence correction. Thus, without increasing the capacity of the memory 3, the convergence accuracy at the center of screen can be increased.
JP7481880A 1980-06-02 1980-06-02 Digital convergence device Pending JPS56169985A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7481880A JPS56169985A (en) 1980-06-02 1980-06-02 Digital convergence device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7481880A JPS56169985A (en) 1980-06-02 1980-06-02 Digital convergence device

Publications (1)

Publication Number Publication Date
JPS56169985A true JPS56169985A (en) 1981-12-26

Family

ID=13558268

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7481880A Pending JPS56169985A (en) 1980-06-02 1980-06-02 Digital convergence device

Country Status (1)

Country Link
JP (1) JPS56169985A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5345280A (en) * 1992-02-26 1994-09-06 Hitachi, Ltd. Digital convergence correction system and method for preparing correction data

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5345280A (en) * 1992-02-26 1994-09-06 Hitachi, Ltd. Digital convergence correction system and method for preparing correction data

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