JPS5464429A - Control circuit for crt display unit - Google Patents

Control circuit for crt display unit

Info

Publication number
JPS5464429A
JPS5464429A JP13106177A JP13106177A JPS5464429A JP S5464429 A JPS5464429 A JP S5464429A JP 13106177 A JP13106177 A JP 13106177A JP 13106177 A JP13106177 A JP 13106177A JP S5464429 A JPS5464429 A JP S5464429A
Authority
JP
Japan
Prior art keywords
counter
signal
character
roll
character display
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
JP13106177A
Other languages
Japanese (ja)
Inventor
Toshio Ishikawa
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.)
NEC Corp
Original Assignee
NEC Corp
Nippon 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 NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP13106177A priority Critical patent/JPS5464429A/en
Publication of JPS5464429A publication Critical patent/JPS5464429A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To aviod the missing of display caused by the operation, by enabling to follow with visual sense of man for the operation of the roll up or down for the character display position on CRT.
CONSTITUTION: The scanning line counter 7 outputting the scanning line end signal of one character every count of predetermined number of scanning lines, character display position counter 101 counting the value corresponding to the character display lines based on the signal from the counter 7, and FF104 and 105 displaying the operating condition of the roll up/roll down operation with external signal are provided. Further, the same screen repeating number counter 102 counting the number of repetition for the same screen display in response to the final character display signal in CRT screen with the output of FF104, 105 and the signal of the counter 101, correction counter 103 correcting the count of shift for the character line displayed on the CRT screen when not operated in response to the end signal of the repetitive operation from the counter 102, and the addition circuit 209 adding the value of the counter 103 are provided.
COPYRIGHT: (C)1979,JPO&Japio
JP13106177A 1977-10-31 1977-10-31 Control circuit for crt display unit Pending JPS5464429A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13106177A JPS5464429A (en) 1977-10-31 1977-10-31 Control circuit for crt display unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13106177A JPS5464429A (en) 1977-10-31 1977-10-31 Control circuit for crt display unit

Publications (1)

Publication Number Publication Date
JPS5464429A true JPS5464429A (en) 1979-05-24

Family

ID=15049083

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13106177A Pending JPS5464429A (en) 1977-10-31 1977-10-31 Control circuit for crt display unit

Country Status (1)

Country Link
JP (1) JPS5464429A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6097391A (en) * 1983-09-30 1985-05-31 イング・チイ・オリベツチ・アンド・チイ・エス・ピー・ア Display for image prescribed by a plurality of data lines
JPH0719786U (en) * 1980-05-16 1995-04-07 アプル・コンピュータ・インコーポレーテッド Address device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0719786U (en) * 1980-05-16 1995-04-07 アプル・コンピュータ・インコーポレーテッド Address device
JPS6097391A (en) * 1983-09-30 1985-05-31 イング・チイ・オリベツチ・アンド・チイ・エス・ピー・ア Display for image prescribed by a plurality of data lines
JPH0570832B2 (en) * 1983-09-30 1993-10-05 Olivetti & Co Spa

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