GB1252485A

GB1252485A – – Google Patents

GB1252485A – – Google Patents

Info

Publication number
GB1252485A

GB1252485A

GB1252485DA
GB1252485A
GB 1252485 A
GB1252485 A
GB 1252485A

GB 1252485D A
GB1252485D A
GB 1252485DA
GB 1252485 A
GB1252485 A
GB 1252485A
Authority
GB
United Kingdom
Prior art keywords
computer
display
pen
light
graphic
Prior art date
1968-05-06
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

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.)
1968-05-06
Filing date
1969-05-05
Publication date
1971-11-03

1969-05-05
Application filed
filed
Critical

1971-11-03
Publication of GB1252485A
publication
Critical
patent/GB1252485A/en

Status
Expired
legal-status
Critical
Current

Links

Espacenet

Global Dossier

Discuss

Classifications

G—PHYSICS

G06—COMPUTING; CALCULATING OR COUNTING

G06F—ELECTRIC DIGITAL DATA PROCESSING

G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements

G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer

G06F3/048—Interaction techniques based on graphical user interfaces [GUI]

G06F3/0484—Interaction techniques based on graphical user interfaces [GUI] for the control of specific functions or operations, e.g. selecting or manipulating an object, an image or a displayed text element, setting a parameter value or selecting a range

G06F3/04845—Interaction techniques based on graphical user interfaces [GUI] for the control of specific functions or operations, e.g. selecting or manipulating an object, an image or a displayed text element, setting a parameter value or selecting a range for image manipulation, e.g. dragging, rotation, expansion or change of colour

Abstract

1,252,485. Cathode-ray tube displays. RCA CORPORATION. 5 May, 1969 [6 May, 1968], No. 22772/69. Heading H4T. In a display system in which successive coded character signals received from a computer are utilized to control the production of a graphic display on a cathode-ray tube with which a light-pen is co-operatively associated, an output signal from the light-pen, when it senses a selected part of the display, is converted into coded data indicative of the position of the coded character corresponding to such selected part in the sequence of coded character signals which contains it and such coded data is transmitted to the computer. The invention is contrasted with known systems in which the signal from the light-pen is employed to send to the computer an ” interrupt ” signal together with signals indicative of the co-ordinates of the selected part and is stated to be of particular advantage when used in conjunction with a remote, time-shared, computer connected by a transmission channel of narrow bandwidth, (e.g. an ordinary telephone line), since it may not be convenient for the computer to grant priority to one user over another and even if it does, it may be at a step in its programme beyond that corresponding to the received light-pen position because of the transmission time of the narrow bandwidth channel. Also, when such a channel is employed the displayed cannot be continually refreshed by the computer at a rate sufficiently high to prevent flicker and to overcome this difficulty a storage-type display tube is employed. As shown in Fig. 1, coded character signals indicative of graphic information are supplied by a time-shared computer 10 in parallel form to a converter 12 in which they are translated into serial form and sent, as audio tones, over a telephone line 14 to a remote user location. The received tones are supplied via a translator 16 to control circuits 18 in which they are converted to parallel form coded character signals and utilized to control the production of the graphic display on a storage type cathode-ray tube 20. The coded character signals, each consisting of seven bits (plus a parity bit) comprise instruction characters, indicating e.g. start-of-message, erasure of the display etc. and operation characters, indicating the length and direction of the graphic traces. When a message is received the start signal derived via decoder 22 resets two 6-stage counters 24 and 26 and resets register 3 and as each operation character is received counter 26 is advanced by a count of ” one “. If the graphic figure being traced requires more than 64 computer commands counter 24 commences to count when counter 26 is full (i.e. at a count of 64). Each received operation character controls the production of the display via the blocks 18 and 20 (as described in Specification 1,187,556) so that the state of the counters 24, 26 at any instant is indicative of the element of the display being traced at that instant. When light-pen operation is required the operator depresses a key on keyboard 70 which conditions a switch 28 to pass the output of the counters to a parallel-to-serial converter 30 and when the operator positions the light-pen 34 adjacent a selected element the resulting pulse produced thereby opens gate 32 which passes the output from converter 30 to the translator 16. The latter then converts the input signals to a form suitable for transmission over line 74 to the converter 12 which translates them into parallel 7-bit words for application to a temporary buffer stage in the computer 12. When this stage is examined on the time-shared basis the computer interprets the words as a ” pointer ” to a location in its memory which stores the operation information required to trace the selected element forming part of a particular programme e.g. ” Drawing a Cube ” (Fig. 2, not shown) and the operator by means of a keyboard 70 then instructs the computer to effect any required changes, modifications etc. in the selected element. The modified programme is then returned to the same memory location and the computer may then be instructed to produce the graphic trace in its amended form. A ” track ” mode of operation in which an ” octagon ” figure drawn under the control of the computer is moved across the display screen in accordance with movement of the light-pen is also described (Fig. 2, not shown).

GB1252485D
1968-05-06
1969-05-05

Expired

GB1252485A
(en)

Applications Claiming Priority (1)

Application Number
Priority Date
Filing Date
Title

US72674368A

1968-05-06
1968-05-06

Publications (1)

Publication Number
Publication Date

GB1252485A
true

GB1252485A
(en)

1971-11-03

Family
ID=24919825
Family Applications (1)

Application Number
Title
Priority Date
Filing Date

GB1252485D
Expired

GB1252485A
(en)

1968-05-06
1969-05-05

Country Status (6)

Country
Link

US
(1)

US3543240A
(en)

DE
(1)

DE1923078C3
(en)

FR
(1)

FR2007943A1
(en)

GB
(1)

GB1252485A
(en)

NL
(1)

NL6906836A
(en)

SE
(1)

SE339340B
(en)

Families Citing this family (24)

* Cited by examiner, † Cited by third party

Publication number
Priority date
Publication date
Assignee
Title

US4015108A
(en)

*

1974-01-18
1977-03-29
Bausch & Lomb Incorporated
Methods of and apparatus for determining the physical parameters of selected objects

US3944988A
(en)

*

1969-11-21
1976-03-16
Compagnie Internationale Pour L’informatique – C.I.I.
Image-display system interacting with light pen

US3735389A
(en)

*

1970-02-24
1973-05-22
Zeta Research
Digital graphic display apparatus, system and method

US3651508A
(en)

*

1970-11-23
1972-03-21
Bell Telephone Labor Inc
System for evaluating light pen strikes

US3760373A
(en)

*

1971-12-20
1973-09-18
Ibm
Optical data entry and display system

US3768073A
(en)

*

1972-01-03
1973-10-23
Searle Medidata Inc
Entry confirming input terminal

JPS49111554A
(en)

*

1973-02-22
1974-10-24

US4011546A
(en)

*

1974-07-27
1977-03-08
Iwatsu Electric Co., Ltd.
Display apparatus

JPS5184522A
(en)

*

1975-01-22
1976-07-23
Canon Kk

US4034346A
(en)

*

1975-10-15
1977-07-05
Compagnie Honeywell Bull (Societe Anonyme)
Interface for establishing communications between a data-processing unit and a plurality of stations

SE401571B
(en)

*

1977-02-18
1978-05-16
Bejting Anders Martin Thomas

ALPHANUMERIC TERMINAL

US4190831A
(en)

*

1978-05-08
1980-02-26
The Singer Company
Light pen detection system for CRT image display

US4434502A
(en)

1981-04-03
1984-02-28
Nippon Electric Co., Ltd.
Memory system handling a plurality of bits as a unit to be processed

US4558313A
(en)

*

1981-12-31
1985-12-10
International Business Machines Corporation
Indicator to data processing interface

US4454417A
(en)

*

1982-02-05
1984-06-12
George A. May
High resolution light pen for use with graphic displays

US4697175A
(en)

*

1984-03-30
1987-09-29
American Telephone And Telegraph Company, At&T Technologies, Inc.
Lightpen control circuit

US4864411A
(en)

*

1988-06-06
1989-09-05
Ncr Corporation
Electronic copy board system

US5583323A
(en)

*

1993-11-05
1996-12-10
Microfield Graphics, Inc.
Calibration of graphic data-acquisition tracking system

US5585605A
(en)

*

1993-11-05
1996-12-17
Microfield Graphics, Inc.
Optical-scanning system employing laser and laser safety control

US5434370A
(en)

*

1993-11-05
1995-07-18
Microfield Graphics, Inc.
Marking system with pen-up/pen-down tracking

IL120186A
(en)

*

1997-02-09
2000-06-01
Raviv Roni
Display pointing device and method

US6097376A
(en)

*

1998-05-11
2000-08-01
Rothschild; Omri
Light pen system for use with a CRT scanning display

US6377250B1
(en)

1999-01-19
2002-04-23
Roni Raviv
Device for use with raster display

US6592461B1
(en)

2000-02-04
2003-07-15
Roni Raviv
Multifunctional computer interactive play system

Family Cites Families (7)

* Cited by examiner, † Cited by third party

Publication number
Priority date
Publication date
Assignee
Title

US3346853A
(en)

*

1964-03-02
1967-10-10
Bunker Ramo
Control/display apparatus

US3396377A
(en)

*

1964-06-29
1968-08-06
Gen Electric
Display data processor

US3399401A
(en)

*

1964-06-29
1968-08-27
Army Usa
Digital computer and graphic input system

US3337860A
(en)

*

1964-12-31
1967-08-22
Ibm
Display tracking system

US3402395A
(en)

*

1965-02-15
1968-09-17
Bunker Ramo
Data compression and display system

US3382487A
(en)

*

1965-12-27
1968-05-07
Xerox Corp
Dataphone driven remote display system

US3413515A
(en)

*

1966-04-29
1968-11-26
Massachusetts Inst Technology
Electron beam position sensor

1968

1968-05-06
US
US726743A
patent/US3543240A/en
not_active
Expired – Lifetime

1969

1969-05-02
SE
SE06247/69A
patent/SE339340B/xx
unknown

1969-05-05
NL
NL6906836A
patent/NL6906836A/xx
not_active
Application Discontinuation

1969-05-05
GB
GB1252485D
patent/GB1252485A/en
not_active
Expired

1969-05-06
DE
DE1923078A
patent/DE1923078C3/en
not_active
Expired

1969-05-06
FR
FR6914507A
patent/FR2007943A1/fr
not_active
Withdrawn

Also Published As

Publication number
Publication date

DE1923078C3
(en)

1979-05-31

SE339340B
(en)

1971-10-04

FR2007943A1
(en)

1970-01-16

NL6906836A
(en)

1969-11-10

DE1923078A1
(en)

1969-11-20

DE1923078B2
(en)

1978-09-28

US3543240A
(en)

1970-11-24

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(en)

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Data storage arrangement for buffering asynchronous input and output data streams

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(en)

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Communication channel switching device

Legal Events

Date
Code
Title
Description

1972-03-15
PS
Patent sealed [section 19, patents act 1949]

1981-01-21
PCNP
Patent ceased through non-payment of renewal fee

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