GB1360487A - Creation of Inventions and Patents with Artificial Intelligence

GB1360487A – Visual display device
– Google Patents

GB1360487A – Visual display device
– Google Patents
Visual display device

Info

Publication number
GB1360487A

GB1360487A
GB1515271A
GB1515271A
GB1360487A
GB 1360487 A
GB1360487 A
GB 1360487A
GB 1515271 A
GB1515271 A
GB 1515271A
GB 1515271 A
GB1515271 A
GB 1515271A
GB 1360487 A
GB1360487 A
GB 1360487A
Authority
GB
United Kingdom
Prior art keywords
values
registers
shifted
increments
increment
Prior art date
1971-05-15
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.)

Expired

Application number
GB1515271A
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.)

Fujitsu Services Ltd

Original Assignee
Fujitsu Services 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.)
1971-05-15
Filing date
1971-05-15
Publication date
1974-07-17

1971-05-15
Application filed by Fujitsu Services Ltd
filed
Critical
Fujitsu Services Ltd

1971-05-15
Priority to GB1515271A
priority
Critical
patent/GB1360487A/en

1972-05-05
Priority to AU41941/72A
priority
patent/AU458508B2/en

1972-05-08
Priority to US00251066A
priority
patent/US3812485A/en

1972-05-12
Priority to DE2223257A
priority
patent/DE2223257C3/en

1972-05-15
Priority to FR7217300A
priority
patent/FR2139542A5/fr

1974-07-17
Publication of GB1360487A
publication
Critical
patent/GB1360487A/en

Status
Expired
legal-status
Critical
Current

Links

Espacenet

Global Dossier

Discuss

Classifications

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

Abstract

1360487 CRT displays INTERNATIONAL COMPUTERS Ltd 12 May 1972 [15 May 1971] 15152/71 Heading H4T In an arrangement for drawing lines on a CRT display a series of pairs of co-ordinate values are produced by 2n. Successive additions of values #x/2n, #y/2n to start values X, Y, these pairs cotrolling the beam deflection. X and Y are loaded from 30 via 28, 10 and 31 into registers 5 and 15, and the line increments #X #Y into registers 7, 17. The increments are simultaneously both shifted right until neither left-hand-side 7a, 17a contains significant digits (as detected by 8, 18) and these shifted increments are then repeatedly added to the contents of 5, 15 in the lower order positions, the upper order digits used to derive analogue deflection values thus receiving periodic overflows from 5b, 15b. The number of bit positions in 5a, 15a is chosen so that a change in their lowest order corresponds to the tube spot definition; however the range of deflection values which these registers command exceed the picture area, so that the actual display is part of a larger virtual picture. The co-ordinates of the centre of the displayed picture with respect to the larger virtual picture are supplied from 9 to subtractor 10 as the start values X, Y pass through 10 as referred to above. Each addition of the shifted increment values adds a 1 from 11 (shifted downwards correspondingly to the right shift of #X, #Y) into counter 13 until its contents again reach zero indicating that the end point of the line has been reached. Field indicators 19 and 29 and AND gate 20 detect whether the current X and Y values being supplied to the D-A converters 3 and 4 are both so small as to represent a point on the tube face; when this condition does not obtain skip logic 21 is brought into operation. This examines successively the bits registered in counter 13 and controls shift and addition of the contents of 7 and 17 to complete the incrementing with a minimum number of additions. To deal with lines which start off the tube face a series of “trial sums” are attempted starting with the full increment and then successively (if necessary) ¢, “ &c. of the increment, and while the result lies outside the tube face the sum is loaded into 5, 15; if inside the field indicators 19, 29 inhibit the over writing of the old values in 5, 15. Zoom register 31, by controlling a shift of the orders in registers 5, 7, 15, 17 into which the data is originally loaded controls the scale of the display.

GB1515271A
1971-05-15
1971-05-15
Visual display device

Expired

GB1360487A
(en)

Priority Applications (5)

Application Number
Priority Date
Filing Date
Title

GB1515271A

GB1360487A
(en)

1971-05-15
1971-05-15
Visual display device

AU41941/72A

AU458508B2
(en)

1971-05-15
1972-05-05
Improvements in or relating to visual display devices

US00251066A

US3812485A
(en)

1971-05-15
1972-05-08
Visual display device

DE2223257A

DE2223257C3
(en)

1971-05-15
1972-05-12

Display device for drawing lines on a cathode ray tube display surface

FR7217300A

FR2139542A5
(en)

1971-05-15
1972-05-15

Applications Claiming Priority (1)

Application Number
Priority Date
Filing Date
Title

GB1515271A

GB1360487A
(en)

1971-05-15
1971-05-15
Visual display device

Publications (1)

Publication Number
Publication Date

GB1360487A
true

GB1360487A
(en)

1974-07-17

Family
ID=10053966
Family Applications (1)

Application Number
Title
Priority Date
Filing Date

GB1515271A
Expired

GB1360487A
(en)

1971-05-15
1971-05-15
Visual display device

Country Status (5)

Country
Link

US
(1)

US3812485A
(en)

AU
(1)

AU458508B2
(en)

DE
(1)

DE2223257C3
(en)

FR
(1)

FR2139542A5
(en)

GB
(1)

GB1360487A
(en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party

Publication number
Priority date
Publication date
Assignee
Title

US4143360A
(en)

1976-08-27
1979-03-06
The Magnavox Company
Method and apparatus for controlling a display terminal

US4475172A
(en)

1978-05-30
1984-10-02
Bally Manufacturing Corporation
Audio/visual home computer and game apparatus

DE2836500C3
(en)

1978-08-21
1981-09-24
Siemens AG, 1000 Berlin und 8000 München

Arrangement for overlaying graphics in an image displayed on the screen of a display device

US4365305A
(en)

1981-01-05
1982-12-21
Western Electric Company, Inc.
Vector generator for computer graphics

1971

1971-05-15
GB
GB1515271A
patent/GB1360487A/en
not_active
Expired

1972

1972-05-05
AU
AU41941/72A
patent/AU458508B2/en
not_active
Expired

1972-05-08
US
US00251066A
patent/US3812485A/en
not_active
Expired – Lifetime

1972-05-12
DE
DE2223257A
patent/DE2223257C3/en
not_active
Expired

1972-05-15
FR
FR7217300A
patent/FR2139542A5/fr
not_active
Expired

Also Published As

Publication number
Publication date

DE2223257B2
(en)

1979-04-12

AU4194172A
(en)

1973-11-08

US3812485A
(en)

1974-05-21

DE2223257A1
(en)

1972-11-30

AU458508B2
(en)

1975-02-27

FR2139542A5
(en)

1973-01-05

DE2223257C3
(en)

1979-11-29

Contact information