JPS54149520A - Dispaly unit - Google Patents

Dispaly unit

Info

Publication number
JPS54149520A
JPS54149520A JP5757378A JP5757378A JPS54149520A JP S54149520 A JPS54149520 A JP S54149520A JP 5757378 A JP5757378 A JP 5757378A JP 5757378 A JP5757378 A JP 5757378A JP S54149520 A JPS54149520 A JP S54149520A
Authority
JP
Japan
Prior art keywords
origin address
register
screen
address
data
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
JP5757378A
Other languages
Japanese (ja)
Other versions
JPS5931714B2 (en
Inventor
Mitsuo Yoshikawa
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 JP53057573A priority Critical patent/JPS5931714B2/en
Publication of JPS54149520A publication Critical patent/JPS54149520A/en
Publication of JPS5931714B2 publication Critical patent/JPS5931714B2/en
Expired legal-status Critical Current

Links

Landscapes

  • Digital Computer Display Output (AREA)

Abstract

PURPOSE: To make a smooth shift on a display screen by transferring information on a read start address to an origin address register during the vertical fly-back time.
CONSTITUTION: By external computer 500, origin address buffer registers 1 and 10 are stored with origin address data 2 which indicates an initial address for the read of data from refresh memory 100. Once vertical fly-back time signal 21 becomes "1" indicating that retracing is in process, gate 30 outputs "1" and origin address data is transferred to the buffer register to origin address X register 40 and origin address Y register 50, so that a screen shift will be considered to be made. Since this operation is carried out within the vertical fly-back time, a smooth shift can be made without screen fluctuation. The origin address data is controlled by the computer and the screen remain fixed unless set signal 3 becomes "1".
COPYRIGHT: (C)1979,JPO&Japio
JP53057573A 1978-05-17 1978-05-17 display device Expired JPS5931714B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP53057573A JPS5931714B2 (en) 1978-05-17 1978-05-17 display device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP53057573A JPS5931714B2 (en) 1978-05-17 1978-05-17 display device

Publications (2)

Publication Number Publication Date
JPS54149520A true JPS54149520A (en) 1979-11-22
JPS5931714B2 JPS5931714B2 (en) 1984-08-03

Family

ID=13059582

Family Applications (1)

Application Number Title Priority Date Filing Date
JP53057573A Expired JPS5931714B2 (en) 1978-05-17 1978-05-17 display device

Country Status (1)

Country Link
JP (1) JPS5931714B2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS597993A (en) * 1982-07-07 1984-01-17 株式会社日立製作所 Character/graphic display terminal unit
JPS6050414A (en) * 1983-08-30 1985-03-20 Horiba Ltd Spectrum displaying device
JPH04128788A (en) * 1990-09-19 1992-04-30 Nec Corp Display address generator

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6347613U (en) * 1986-09-17 1988-03-31

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52152122A (en) * 1976-06-12 1977-12-17 Nippon Telegr & Teleph Corp <Ntt> Scrolling display

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52152122A (en) * 1976-06-12 1977-12-17 Nippon Telegr & Teleph Corp <Ntt> Scrolling display

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS597993A (en) * 1982-07-07 1984-01-17 株式会社日立製作所 Character/graphic display terminal unit
JPH0527118B2 (en) * 1982-07-07 1993-04-20 Hitachi Seisakusho Kk
JPS6050414A (en) * 1983-08-30 1985-03-20 Horiba Ltd Spectrum displaying device
JPH04128788A (en) * 1990-09-19 1992-04-30 Nec Corp Display address generator

Also Published As

Publication number Publication date
JPS5931714B2 (en) 1984-08-03

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