GB1078545A - Creation of Inventions and Patents with Artificial Intelligence

GB1078545A – Character display apparatus
– Google Patents

GB1078545A – Character display apparatus
– Google Patents
Character display apparatus

Info

Publication number
GB1078545A

GB1078545A
GB6354/66A
GB635466A
GB1078545A
GB 1078545 A
GB1078545 A
GB 1078545A
GB 6354/66 A
GB6354/66 A
GB 6354/66A
GB 635466 A
GB635466 A
GB 635466A
GB 1078545 A
GB1078545 A
GB 1078545A
Authority
GB
United Kingdom
Prior art keywords
character
signals
gates
stroke
appropriate
Prior art date
1965-03-01
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
GB6354/66A
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.)

International Business Machines Corp

Original Assignee
International Business Machines 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.)
1965-03-01
Filing date
1966-02-14
Publication date
1967-08-09

1966-02-14
Application filed by International Business Machines Corp
filed
Critical
International Business Machines Corp

1967-08-09
Publication of GB1078545A
publication
Critical
patent/GB1078545A/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

1,078,545. Cathode – ray tube displays. INTERNATIONAL BUSINESS MACHINES CORPORATION. Feb. 14, 1966 [March 1, 1965], No. 6354/66. Heading H4T. In a character display apparatus in which Alpha-Numeric characters are produced on a cathode-ray tube by appropriate deflections of the beam data indicative of each character derived from a register store are utilized to control a group of logic elements associated with such character, the elements of each group controlling in sequence appropriate combinations of beam deflection generators. The data, which may be derived from a computer or a keyboard operated device, are set up in coded digital forms in a register (12, Fig. 1) and fed to a decoder (14) which supplies a predetermined voltage level on a different line for each coded input to an End Point Generator (16). This supplies signals in digital form indicative of the successive X, Y co-ordinates of the end point of each stroke required to trace the character (starting from a fixed origin X=0, Y=0) together with signals indicative of the strokes which must be blanked, to preserve uniformity of trace brightness, and a further signal indicative of the last stroke of the character (end-bit). Thus, generator (16) comprises a group of logic elements for each character, specifically AND gates (30-1 . . . 30-4, Fig. 3) appertaining to the character A which requires four strokes (Fig. 2b) and e.g. gates (30-1 . . . 30-0) appertaining to the character G which requires nine strokes (Fig. 2a)-the maximum number provided-including the stroke from the origin “0” to the commencement of the character end-point (EP) X=3, Y=3, with similar appropriate groupings of AND gates for each of the remaining characters (Fig. 4). In operation, a predetermined voltage level on the appropriate character output line of decoder (14) forms one input of all of the appertaining AND gates which are then sequentially conditioned to produce output signals by the successive outputs from a counter (18)-producing a maximum count of nine-such output signals controlling OR gates producing digital signals appropriate to the amount of X and Y deflection which each stroke requires together with signals controlling the stroke blanking and signals indicative of the end of the character. The latter signals (END BIT) are fed via a gate (22) and register (24) to re-set the counter (18)-i.e. to improve the time efficiency of operation when the character requires less than nine strokes-and the other signals are supplied via digital to analogue converters to produce the required blanking and beam deflection signals. The latter are fed to one deflection circuit whilst an auxiliary deflection circuit is employed for positioning the beam initially at the origin, X=0, Y=0.

GB6354/66A
1965-03-01
1966-02-14
Character display apparatus

Expired

GB1078545A
(en)

Applications Claiming Priority (1)

Application Number
Priority Date
Filing Date
Title

US436078A

US3334304A
(en)

1965-03-01
1965-03-01
Asynchronous character generator for successive endpoint definition

Publications (1)

Publication Number
Publication Date

GB1078545A
true

GB1078545A
(en)

1967-08-09

Family
ID=23731021
Family Applications (1)

Application Number
Title
Priority Date
Filing Date

GB6354/66A
Expired

GB1078545A
(en)

1965-03-01
1966-02-14
Character display apparatus

Country Status (2)

Country
Link

US
(1)

US3334304A
(en)

GB
(1)

GB1078545A
(en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party

Publication number
Priority date
Publication date
Assignee
Title

GB1110403A
(en)

1964-05-07
1968-04-18
Rank Organisation Ltd
Improvements in or relating to electric discharge tubes

US3487202A
(en)

1965-06-30
1969-12-30
Ibm
Image processing system

US3482239A
(en)

1966-05-27
1969-12-02
Burroughs Corp
Resistor matrix symbol generator

US3482238A
(en)

1966-05-27
1969-12-02
Burroughs Corp
Multilevel blanking control and momentary stroke inhibition for visual display apparatus

US3471847A
(en)

1966-08-03
1969-10-07
California Computer Products
Cathode ray tube digital display system

FR1573168A
(en)

1968-04-05
1969-07-04

US3614743A
(en)

1969-01-14
1971-10-19
Digital Equipment Corp
Variable stroke character generator

US3657716A
(en)

1970-06-15
1972-04-18
Ibm
Character generator for cathode ray tube display device

US3713134A
(en)

1970-09-16
1973-01-23
Corning Glass Works
Digital stroke character generator

US3768092A
(en)

1971-10-21
1973-10-23
Burroughs Corp
Graphic display apparatus

Family Cites Families (4)

* Cited by examiner, † Cited by third party

Publication number
Priority date
Publication date
Assignee
Title

US2766444A
(en)

1953-09-01
1956-10-09
Eugene H Sheftelman
Electronic character displaying apparatus

US3047851A
(en)

1958-03-21
1962-07-31
Marquardt Corp
Electronic character generating and displaying apparatus

GB895830A
(en)

1958-09-12
1962-05-09
Nat Res Dev
Conversion of electrical signals into visual symbols

US3205488A
(en)

1962-04-24
1965-09-07
Ibm
Cathode ray tube having resistor deflection control

1965

1965-03-01
US
US436078A
patent/US3334304A/en
not_active
Expired – Lifetime

1966

1966-02-14
GB
GB6354/66A
patent/GB1078545A/en
not_active
Expired

Also Published As

Publication number
Publication date

US3334304A
(en)

1967-08-01

Contact information