JPS54108533A - Cathode-ray tube graphic display unit - Google Patents

Cathode-ray tube graphic display unit

Info

Publication number
JPS54108533A
JPS54108533A JP1633878A JP1633878A JPS54108533A JP S54108533 A JPS54108533 A JP S54108533A JP 1633878 A JP1633878 A JP 1633878A JP 1633878 A JP1633878 A JP 1633878A JP S54108533 A JPS54108533 A JP S54108533A
Authority
JP
Japan
Prior art keywords
erasing
address
lattice dots
lattice
dots
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
JP1633878A
Other languages
Japanese (ja)
Other versions
JPS6045448B2 (en
Inventor
Fumio Inaba
Masaaki Naganuma
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 JP53016338A priority Critical patent/JPS6045448B2/en
Publication of JPS54108533A publication Critical patent/JPS54108533A/en
Publication of JPS6045448B2 publication Critical patent/JPS6045448B2/en
Expired legal-status Critical Current

Links

Abstract

PURPOSE: To attain extremely-efficient erasing through tablet inputting, by erasing only significant lattice dots within the region indicated by an erasing cursor when erasing assignment is made at a lattice address.
CONSTITUTION: When it is required to erase a pattern inputted, erasing only the lattice dots is not easy since the size of the lattice dots (approximate 0.5 × 0.5mm) is large and its number (640 × 512 = 327,680 per screen) is small. For the purpose, when address A at one terminal of segment AB is assigned to be erased from tablet 7, erasing cursor 13 is made to indicate the region for four lattice dots centering on address A and control part 5 retrieves information within the region indicated by the same cursor 13 from dot memory circuit 2 in sequence, thereby erasing only significant lattice dots (lattice dots constituting segment AB). For example, when erasing assignment is made directly not at address A, but near it, address A is to be retrieved and then erased as far as specific lattice dots at address A is included in the erasing region.
COPYRIGHT: (C)1979,JPO&Japio
JP53016338A 1978-02-14 1978-02-14 cathode ray tube graphic display device Expired JPS6045448B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP53016338A JPS6045448B2 (en) 1978-02-14 1978-02-14 cathode ray tube graphic display device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP53016338A JPS6045448B2 (en) 1978-02-14 1978-02-14 cathode ray tube graphic display device

Publications (2)

Publication Number Publication Date
JPS54108533A true JPS54108533A (en) 1979-08-25
JPS6045448B2 JPS6045448B2 (en) 1985-10-09

Family

ID=11913617

Family Applications (1)

Application Number Title Priority Date Filing Date
JP53016338A Expired JPS6045448B2 (en) 1978-02-14 1978-02-14 cathode ray tube graphic display device

Country Status (1)

Country Link
JP (1) JPS6045448B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57109487A (en) * 1980-11-10 1982-07-07 Western Electric Co Method and device for providing cursor image in telemetry autographic system
JPS59223484A (en) * 1983-05-31 1984-12-15 インタ−ナショナル　ビジネス　マシ−ンズ　コ−ポレ−ション Display

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57109487A (en) * 1980-11-10 1982-07-07 Western Electric Co Method and device for providing cursor image in telemetry autographic system
JPH0559636B2 (en) * 1980-11-10 1993-08-31 At & T Technologies Inc
JPS59223484A (en) * 1983-05-31 1984-12-15 インタ−ナショナル　ビジネス　マシ−ンズ　コ−ポレ−ション Display
JPH0430035B2 (en) * 1983-05-31 1992-05-20

Also Published As

Publication number Publication date
JPS6045448B2 (en) 1985-10-09

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