JPS54114047A - Character pattern generator - Google Patents

Character pattern generator

Info

Publication number
JPS54114047A
JPS54114047A JP2058178A JP2058178A JPS54114047A JP S54114047 A JPS54114047 A JP S54114047A JP 2058178 A JP2058178 A JP 2058178A JP 2058178 A JP2058178 A JP 2058178A JP S54114047 A JPS54114047 A JP S54114047A
Authority
JP
Japan
Prior art keywords
character pattern
logic function
logic
expressed
character
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
JP2058178A
Other languages
Japanese (ja)
Inventor
Masatoshi Horiguchi
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.)
Nippon Telegraph and Telephone Corp
Original Assignee
Nippon Telegraph and Telephone Corp
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 Telegraph and Telephone Corp filed Critical Nippon Telegraph and Telephone Corp
Priority to JP2058178A priority Critical patent/JPS54114047A/en
Publication of JPS54114047A publication Critical patent/JPS54114047A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To ensure the compression for the character pattern data by means of the simplified technique of logic system by memorizing the character pattern expressed in the matrix in the form of the logic function.
CONSTITUTION: The fundamental conditions of the character pattern generator is as follows: the desired line (row) subpatterns D0WD4 are to be generated when character codes C0WC6 are applied along with line (row) numbers N0WN2. Now, output information Di (i=0W4) is expressed as Di = fi(C0, C1...C6, N0WN2) with logic function fi expressed in the main addition standard form, and the number of the logic product term of each Di is decreased via the simplified technique of the logic function to secure memorization of the logic function of a small redundancy. This simplified logic function is then written into character pattern memory part 4 composed of PLA. With application of character pattern type-based CB, character code C and subpattern number N from the external unit, unit 4 delivers the subpattern based on the logic function.
COPYRIGHT: (C)1979,JPO&Japio
JP2058178A 1978-02-24 1978-02-24 Character pattern generator Pending JPS54114047A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2058178A JPS54114047A (en) 1978-02-24 1978-02-24 Character pattern generator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2058178A JPS54114047A (en) 1978-02-24 1978-02-24 Character pattern generator

Publications (1)

Publication Number Publication Date
JPS54114047A true JPS54114047A (en) 1979-09-05

Family

ID=12031172

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2058178A Pending JPS54114047A (en) 1978-02-24 1978-02-24 Character pattern generator

Country Status (1)

Country Link
JP (1) JPS54114047A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5670593A (en) * 1979-11-14 1981-06-12 Tokyo Shibaura Electric Co Display unit

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5670593A (en) * 1979-11-14 1981-06-12 Tokyo Shibaura Electric Co Display unit

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