US3723802A - Digital vector generator utilizing intensity control as a function of vector angle and velocity - Google Patents

Digital vector generator utilizing intensity control as a function of vector angle and velocity Download PDF

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Publication number
US3723802A
US3723802A US00871160A US3723802DA US3723802A US 3723802 A US3723802 A US 3723802A US 00871160 A US00871160 A US 00871160A US 3723802D A US3723802D A US 3723802DA US 3723802 A US3723802 A US 3723802A
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Prior art keywords
vector
function
velocity
intensity control
drawn
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US00871160A
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M Granberg
H Mueller
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Sperry Corp
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Sperry Rand Corp
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    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G1/00—Control arrangements or circuits, of interest only in connection with cathode-ray tube indicators; General aspects or details, e.g. selection emphasis on particular characters, dashed line or dotted line generation; Preprocessing of data
    • G09G1/06—Control arrangements or circuits, of interest only in connection with cathode-ray tube indicators; General aspects or details, e.g. selection emphasis on particular characters, dashed line or dotted line generation; Preprocessing of data using single beam tubes, e.g. three-dimensional or perspective representation, rotation or translation of display pattern, hidden lines, shadows
    • G09G1/08—Control arrangements or circuits, of interest only in connection with cathode-ray tube indicators; General aspects or details, e.g. selection emphasis on particular characters, dashed line or dotted line generation; Preprocessing of data using single beam tubes, e.g. three-dimensional or perspective representation, rotation or translation of display pattern, hidden lines, shadows the beam directly tracing characters, the information to be displayed controlling the deflection and the intensity as a function of time in two spatial co-ordinates, e.g. according to a cartesian co-ordinate system
    • G09G1/10—Control arrangements or circuits, of interest only in connection with cathode-ray tube indicators; General aspects or details, e.g. selection emphasis on particular characters, dashed line or dotted line generation; Preprocessing of data using single beam tubes, e.g. three-dimensional or perspective representation, rotation or translation of display pattern, hidden lines, shadows the beam directly tracing characters, the information to be displayed controlling the deflection and the intensity as a function of time in two spatial co-ordinates, e.g. according to a cartesian co-ordinate system the deflection signals being produced by essentially digital means, e.g. incrementally

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  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Complex Calculations (AREA)
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  • Controls And Circuits For Display Device (AREA)
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Abstract

An intensity control circuit for use in a high-precision vector generator in which the intensity of the trace on a cathode ray tube is controlled as a function of the angle and speed at which a vector is to be drawn.

Description

United States Patent Granberg et al.
[ 1 Mar. 27, 1973 [58] Field of Search.....3l5/22, l8; 340/324.1, 324 A [56] References Cited UNITED STATES PATENTS 3,325,803 6/1967 Carlock et al. ..315/l8 X 3,333,147 7/1967 Henderson ....340/324 l 3,403,288 9/1968 Bradley et a1 ..315/18 X Primary Examiner-Carl D. Quarforth Assistant Examiner-J. M. Potenza Att0rneyThomas J, Nikolai, Charles A. Johnson and John P. D ority [57] ABSTRACT An intensity control circuit for use in a high-precision vector generator in which the intensity of the trace on a cathode ray tube is controlled as a function of the angle and speed at which a vector is to be drawn.
1 Claim, 40 Drawing Figures s-loo s-no 5-IOB BUFFER H04 BUFFER s-aa s-ve S (FIG. 20)
1 HEA Sax 5.5 5-58 5-60 5-22 S Y [5 1548 com ms. 15) CONTROL 6 POSITION WORD 5-ll2 5-36 LINE 540 M2 F (FIG, l4) CODE 1 54s ocrmr 5 2s 5 34 5 u e DECODER WORD VECTOR woao [Flam ans L s-ze me. 9) G tNPUT BUFFER Patented March 27, 1973 3,723,802
25 Sheets-Sheet 1 5 2 4 3 3 4 2 5 I .002 3 Ist 0cm. 2nd 0cm. am 0cm. Fig. 20 Fig. 2b Fig. 20
POSITION WORD [F] x posmon Y osmou ||l2----4ls -l4'l5 -24 Fig. 3a Q cP \O%-\,\\\
VECTOR WORD {T TANGENT 0R COTANGENT x OR Yu FlNAL l1 l2 sla --|4||5--- -24 INVENTORS j MAUR/TZ L. GINA/BERG HUBERT MK MUELLER, JR.
Patented March 27, 1973 3,723,802
25 Sheets-Sheet 3 sax 5'22 S Y FTQ'J'B [COMP (FIG. l5) CONTROL 6 POSITION WORD -5-56 5-H2 5-36 LINE '5'40 M2 F (FIG.I4) CODE T 546 OCTANT 5-10 6] s oscoosn l (FIG.|0) WORD VECTOR WORD FLAG L 5- 26 J (FIG. 9) G {|NPuT BUFFER (Has) I Patented March 27, 1973 25 Sheets-Sheet 4.
CLOCK GENERATOR fig. 6
T3 I T4 Patented March 27, 1973 23 Sheets-Sheet 9 Patented March 27, 1973 215 Sheets-Sheet 12 mokum 5 P2302 2 MA W 10 E 5:08 ov-m BIT 3 Patented March 27, 1973 COMPARE VECTOR DRAW I O CYCLE CYCLE STOP CYCLE 25 SheetsSheet 14 q GATE To x ,Y AND ocTANT REGISTERS.
02 GATE To T AND F-REGS. AND TO D/A CONVERTER FROM x AND Y.
04 GET DRAW PRESET FLIP-FLOP.
Q CLEAR C-REG.,GATE x ANDY To D/A coNvERTER, sET INTENsITY FLIP-FLOP IF DRAW FLAG FLIP- FLOP sET.
03 SET DRAW FLAG FLIP-FLOP, ENABLE SUBTRACTOR AND COUNTER CYCLE m GATE c To x OR Y AND s T0 x 0R Y.
0 GATE x AND Y To D/A CONVERTER Q3 GATE TO D AND S-REG.,(OBTA|N com INHIBIT GATE SIGNALS TO D AND s.
0 GATE (2 TO Xu OR Yu AND 5 TD x OR Y, SU STOP FLIP-FLOP.
0 GATE x AND Y To D/A CONVERTER.
0 CLEAR DRAW PRESEL'DRAW, AND INTENSITY FLIP- FLOP OPERATION TIMING CHART Fig. 23
BEAM BLANKING CONTROL Fig. 25
Patented March 27, 1973 25 Sheets-Sheet 18 on 2: C3050 ZOFDQFPQQ .Ewmmnu N mN m mm 9w am OTmN Patented March 27, 1973 25 Sheets-Sheet l9 o- \om\ Non m mm mm w m L R mm V QM 5E KDQEU ZOFDmEEmE .rzwmmDo

Claims (1)

1. A device for controlling the intensity of a vector drawn on the face of a cathode ray tube by an electron beam, comprising: current metering means including a plurality of semiconductor switches individually connected in series with a resiStor of predetermined value and in parallel with one another; gating means having at least two input terminals and an output terminal; means connecting the output from said gating means to said semiconductor switches such that when said gating means is enabled, individual ones of said semiconductor switches will be rendered conductive; means for applying digital signals representative of the angle at which the vector is to be drawn to one of said two input terminals; and means for applying digital signals representative of the speed at which the vector is to be drawn to the other of said two input terminals.
US00871160A 1966-08-01 1969-07-17 Digital vector generator utilizing intensity control as a function of vector angle and velocity Expired - Lifetime US3723802A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US56948166A 1966-08-01 1966-08-01
US87116169A 1969-07-17 1969-07-17
US87116069A 1969-07-17 1969-07-17

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US3723802A true US3723802A (en) 1973-03-27

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Family Applications (3)

Application Number Title Priority Date Filing Date
US569481A Expired - Lifetime US3510634A (en) 1966-08-01 1966-08-01 Digital vector generator
US00871161A Expired - Lifetime US3728575A (en) 1966-08-01 1969-07-17 Digital vector generator which causes the electron beam to move in the largest possible increment by sensing if the line is divisible by 2{11 .
US00871160A Expired - Lifetime US3723802A (en) 1966-08-01 1969-07-17 Digital vector generator utilizing intensity control as a function of vector angle and velocity

Family Applications Before (2)

Application Number Title Priority Date Filing Date
US569481A Expired - Lifetime US3510634A (en) 1966-08-01 1966-08-01 Digital vector generator
US00871161A Expired - Lifetime US3728575A (en) 1966-08-01 1969-07-17 Digital vector generator which causes the electron beam to move in the largest possible increment by sensing if the line is divisible by 2{11 .

Country Status (4)

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US (3) US3510634A (en)
DE (1) DE1549874B2 (en)
FR (1) FR1551898A (en)
GB (1) GB1148849A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2373840A1 (en) * 1976-12-07 1978-07-07 Sperry Rand Corp AP
US4365305A (en) * 1981-01-05 1982-12-21 Western Electric Company, Inc. Vector generator for computer graphics

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4027148A (en) * 1975-09-10 1977-05-31 Lawrence David Rosenthal Vector generator
US4251816A (en) * 1978-12-21 1981-02-17 Ncr Corporation Method and apparatus for plotting graphics
US4500879A (en) * 1982-01-06 1985-02-19 Smith Engineering Circuitry for controlling a CRT beam
US7072767B2 (en) * 2003-04-01 2006-07-04 Conocophillips Company Simultaneous inversion for source wavelet and AVO parameters from prestack seismic data
CN112783472B (en) * 2019-11-05 2023-12-12 何群 Multi-value logic wide-bit high-speed adder

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3325803A (en) * 1964-10-01 1967-06-13 Ibm Deflection control circuit
US3333147A (en) * 1963-07-31 1967-07-25 Bunker Ramo Line drawing system
US3403288A (en) * 1965-10-28 1968-09-24 Ibm Dynamic intensity corrections circuit

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3320409A (en) * 1963-01-30 1967-05-16 Burroughs Corp Electronic plotting device
US3329948A (en) * 1963-05-03 1967-07-04 Burroughs Corp Symbol generating apparatus
US3331069A (en) * 1963-10-23 1967-07-11 Kaiser Aerospace & Electronics Contact analog
US3325802A (en) * 1964-09-04 1967-06-13 Burroughs Corp Complex pattern generation apparatus
US3337860A (en) * 1964-12-31 1967-08-22 Ibm Display tracking system
US3394367A (en) * 1965-07-14 1968-07-23 Bendix Corp Symbol generator
US3459926A (en) * 1965-10-18 1969-08-05 Ibm Graphic vector generator
FR1543783A (en) * 1966-12-27 Ibm Digital deflection system for cathode ray tube
US3509542A (en) * 1967-08-15 1970-04-28 Sperry Rand Corp Digital vector generator
US3422304A (en) * 1967-09-15 1969-01-14 Ibm Logic controlled deflection system

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3333147A (en) * 1963-07-31 1967-07-25 Bunker Ramo Line drawing system
US3325803A (en) * 1964-10-01 1967-06-13 Ibm Deflection control circuit
US3403288A (en) * 1965-10-28 1968-09-24 Ibm Dynamic intensity corrections circuit

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2373840A1 (en) * 1976-12-07 1978-07-07 Sperry Rand Corp AP
US4365305A (en) * 1981-01-05 1982-12-21 Western Electric Company, Inc. Vector generator for computer graphics

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Publication number Publication date
GB1148849A (en) 1969-04-16
DE1549874B2 (en) 1970-11-05
FR1551898A (en) 1969-01-03
US3510634A (en) 1970-05-05
DE1549874A1 (en) 1970-03-05
US3728575A (en) 1973-04-17

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