JPS54109734A - Circular arc signal generation processing system - Google Patents

Circular arc signal generation processing system

Info

Publication number
JPS54109734A
JPS54109734A JP1726078A JP1726078A JPS54109734A JP S54109734 A JPS54109734 A JP S54109734A JP 1726078 A JP1726078 A JP 1726078A JP 1726078 A JP1726078 A JP 1726078A JP S54109734 A JPS54109734 A JP S54109734A
Authority
JP
Japan
Prior art keywords
data
circular arc
displacement data
signal generation
spot array
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
JP1726078A
Other languages
Japanese (ja)
Other versions
JPS5741728B2 (en
Inventor
Toshiharu Teranishi
Kazunari Nakane
Makoto Kosugi
Masao Hiroyama
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 JP1726078A priority Critical patent/JPS54109734A/en
Publication of JPS54109734A publication Critical patent/JPS54109734A/en
Publication of JPS5741728B2 publication Critical patent/JPS5741728B2/ja
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/02—Digital function generators
    • G06F1/03—Digital function generators working, at least partly, by table look-up

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Image Generation (AREA)

Abstract

PURPOSE:To secure a beautiful display of the circular arc with a simple method by storing only the displacement data of the spot array on the circle circumference into the memory for the circular arc signal generation system in which the x and y coordinate data of the spot array on the circle circumference is stored in the memory. CONSTITUTION:ROM1 and 2 are provided to memorize the displacement data of both the x and y coordinates of the spot array on the circumference of the reference circle, and counter circuit 3 is added to select a pair of x and y coordinate displacement data read out from ROM1 and 2 in connection to clock generator circuit 7. In addition, the following units are provided: register 6 to memorize the radius data given from outside; multipliers 8 and 9 to give the multiplication to the data selected by counter 3 among the x and y coordinate displacement data memoriyed in ROM2 and 3 as well as to the radius data read out from register 6; and accumulators 10 and 11 to give the cumulative addition or subtraction to the signals delivered from multipliers 8 and 9 in sequence. Thus, the output of accumulators 10 and 11 are delivered via D/A converters 12 and 13 in the form of the x and y deflecting signals respectively.
JP1726078A 1978-02-17 1978-02-17 Circular arc signal generation processing system Granted JPS54109734A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1726078A JPS54109734A (en) 1978-02-17 1978-02-17 Circular arc signal generation processing system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1726078A JPS54109734A (en) 1978-02-17 1978-02-17 Circular arc signal generation processing system

Publications (2)

Publication Number Publication Date
JPS54109734A true JPS54109734A (en) 1979-08-28
JPS5741728B2 JPS5741728B2 (en) 1982-09-04

Family

ID=11938983

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1726078A Granted JPS54109734A (en) 1978-02-17 1978-02-17 Circular arc signal generation processing system

Country Status (1)

Country Link
JP (1) JPS54109734A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5857186A (en) * 1981-09-30 1983-04-05 富士通株式会社 Display indicator
JPH04363772A (en) * 1991-01-29 1992-12-16 Nec Corp System for plotting circle

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5857186A (en) * 1981-09-30 1983-04-05 富士通株式会社 Display indicator
JPH0318230B2 (en) * 1981-09-30 1991-03-12 Fujitsu Ltd
JPH04363772A (en) * 1991-01-29 1992-12-16 Nec Corp System for plotting circle

Also Published As

Publication number Publication date
JPS5741728B2 (en) 1982-09-04

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