JPS55163987A - Digital convergence unit - Google Patents

Digital convergence unit

Info

Publication number
JPS55163987A
JPS55163987A JP7207979A JP7207979A JPS55163987A JP S55163987 A JPS55163987 A JP S55163987A JP 7207979 A JP7207979 A JP 7207979A JP 7207979 A JP7207979 A JP 7207979A JP S55163987 A JPS55163987 A JP S55163987A
Authority
JP
Japan
Prior art keywords
rom
read out
adjustments
data
contents
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.)
Granted
Application number
JP7207979A
Other languages
Japanese (ja)
Other versions
JPS6412436B2 (en
Inventor
Taro Kawamoto
Tokuji Kubo
Susumu Tsujihara
Katsumi Morita
Kunihiko Mototani
Katsumi Mitsuda
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.)
Japan Broadcasting Corp
Panasonic Holdings Corp
Original Assignee
Nippon Hoso Kyokai NHK
Japan Broadcasting Corp
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 Nippon Hoso Kyokai NHK, Japan Broadcasting Corp, Matsushita Electric Industrial Co Ltd filed Critical Nippon Hoso Kyokai NHK
Priority to JP7207979A priority Critical patent/JPS55163987A/en
Publication of JPS55163987A publication Critical patent/JPS55163987A/en
Publication of JPS6412436B2 publication Critical patent/JPS6412436B2/ja
Granted 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Biomedical Technology (AREA)
  • General Health & Medical Sciences (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Video Image Reproduction Devices For Color Tv Systems (AREA)

Abstract

PURPOSE:To save memory capacity while shortening the time of adjustments by previously storing data for adjustments on crosses on a screen and further by providing a fine adjusting function. CONSTITUTION:One-frame memory 31 consists of ROM for four high-order bits, for example, and nonvolatile RAM for four low-order bits. In this ROM, four bits of the needed correction value regarding each cross-shaped adjustment point on a screen are previously written. This data is repeatedly read out. In RAM, correction data concerning all adjustment points are written for fine adjustments by data reversible counter 34. Next, the contents of memory 31 are read out and after interpolated, D/A-converted 9 to output convergence signals via LPF10. Thus, while the adjustment time can be shortened, the contents of ROM are repeatedly read out to generate a correction value of another adjustment point, so that the capacity of ROM can be saved.
JP7207979A 1979-06-07 1979-06-07 Digital convergence unit Granted JPS55163987A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7207979A JPS55163987A (en) 1979-06-07 1979-06-07 Digital convergence unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7207979A JPS55163987A (en) 1979-06-07 1979-06-07 Digital convergence unit

Publications (2)

Publication Number Publication Date
JPS55163987A true JPS55163987A (en) 1980-12-20
JPS6412436B2 JPS6412436B2 (en) 1989-02-28

Family

ID=13479034

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7207979A Granted JPS55163987A (en) 1979-06-07 1979-06-07 Digital convergence unit

Country Status (1)

Country Link
JP (1) JPS55163987A (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5068012A (en) * 1973-10-17 1975-06-07
JPS5453919A (en) * 1977-09-15 1979-04-27 Ibm Method of generating correction factor signal for crt

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5068012A (en) * 1973-10-17 1975-06-07
JPS5453919A (en) * 1977-09-15 1979-04-27 Ibm Method of generating correction factor signal for crt

Also Published As

Publication number Publication date
JPS6412436B2 (en) 1989-02-28

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