DE2433667A1 - Communications system for transmitting and displaying characters - allows telephone conversation to be illustrated at all receivers by sketches etc. - Google Patents

Communications system for transmitting and displaying characters - allows telephone conversation to be illustrated at all receivers by sketches etc.

Info

Publication number
DE2433667A1
DE2433667A1 DE2433667A DE2433667A DE2433667A1 DE 2433667 A1 DE2433667 A1 DE 2433667A1 DE 2433667 A DE2433667 A DE 2433667A DE 2433667 A DE2433667 A DE 2433667A DE 2433667 A1 DE2433667 A1 DE 2433667A1
Authority
DE
Germany
Prior art keywords
transparent
electrically conductive
conductive layer
cathode ray
ray storage
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.)
Pending
Application number
DE2433667A
Other languages
German (de)
Inventor
Heinz W Dipl Phys Fendt
Kurt M Dipl Phys Tischer
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.)
Alcatel Lucent Deutschland AG
Original Assignee
Standard Elektrik Lorenz AG
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 Standard Elektrik Lorenz AG filed Critical Standard Elektrik Lorenz AG
Priority to DE2433667A priority Critical patent/DE2433667A1/en
Priority to ES439319A priority patent/ES439319A1/en
Publication of DE2433667A1 publication Critical patent/DE2433667A1/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J29/00—Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00
    • H01J29/02—Electrodes; Screens; Mounting, supporting, spacing or insulating thereof
    • H01J29/10—Screens on or from which an image or pattern is formed, picked up, converted or stored
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J31/00—Cathode ray tubes; Electron beam tubes
    • H01J31/08—Cathode ray tubes; Electron beam tubes having a screen on or from which an image or pattern is formed, picked up, converted, or stored

Landscapes

  • Position Input By Displaying (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)

Abstract

The communications system for the transmission and reproduction of currently produced hand drawn signs and sketches, is intended to be used in conjunction with a telephone system to illustrate conversations. At each terminal is a CRT controlled via magnetic deflection coils by suitable electronic control units which convert voltage inputs to the appropriate form to drive the CRT deflection coils both at a local tube and at all the remote tubes via a transmission and switching system. The input to each electronic unit is taken from a conducting pen which is used to sketch on the specially prepared face of the CRT. The face of the tube is covered with a thin conducting transparent layer which is excited by coordinate electrode pairs at the sides and at the top and bottom of the CRT screen.

Description

verwendete Bezugszeichen Deutsch 1,2 Kathod enstrahlspeicher- röhre 5,4 Elektronenstrahlerzeu- gungssystem 5,6 Bildschirm 7,8 Leuchtschicht 9, 1o Ablenkeinheit 11,12 durchsichtige, elektrisch leitende Schicht 15,14 Elektroden 15,16 Schreibstift 17,18 Informationswandler 19,20 Elektronenstrahl Leerseiteused reference symbols German 1.2 cathode ray storage tube 5.4 electron beam generator system 5.6 screen 7.8 luminescent layer 9, 1o deflection unit 11.12 clear, electric conductive layer 15.14 electrodes 15.16 pen 17.18 information converter 19.20 electron beam Blank page

Claims (6)

PatentansprücheClaims 1. System zum Schreiben, Übertragen und Wiedergeben von Zeichen, dadurch gekennzeichnet, daß sich an jedem Schreib- und Wiedergabeplatz eine Kathodenstrahlspeicherröhre (1, 2) befindet, daß sich auf der äußeren Oberfläche des Bildschirms (5, 6) jede Kathodenstrahlspeicherröhre eine durchsichtige, elektrisch leitende Schicht (11, 12) b0indet, daß auf dieser Schicht Elektroden ( 14) zur Erzeugung einer reproduzierbaren Potentialverteilung angebracht sind, daß sich bei jeder Kathodenstrahlspeicherröhre ein Schreibstift (15, 16) befindet, daß jeweils einer dieser Schreibstifte auf der betreffenden durchsichtigen, elektrisch leitenden Schicht geführt wird und seine Lage innerhalb der elektrischen Potentialverteilung auf der Schicht durch Angreifen der jeweiligen örtlichen Potentiale bestimmbar ist, daß diese örtlichen Potentiale als Steuersignale für die Ablenkeinheiten (9, 1o) aller im System angeschlossenen Kathodenstrahlspeicherröhren (1, 2) zu jeden Schreib- und Wiedergaseplatz übertragen werden, daß die Elektronenstrahlen (19> 20) der Kathodenstranlspeiche-rröhren (1, 2) die augenblickliche Lage des Schreibstiftes (15, 16) auf der durchsichtigen, elektrisch leitfähigen Schicht auf den Bildschirmen (5, 6) sichtbar nachzeichnen.1. System for writing, transmitting and reproducing characters, thereby characterized in that there is a cathode ray storage tube at each writing and reproducing position (1, 2) is that on the outer surface of the screen (5, 6) each Cathode ray storage tube a transparent, electrically conductive layer (11, 12) b0indet that on this layer electrodes (14) to generate a reproducible Potential distributions are appropriate that each cathode ray storage tube a pen (15, 16) is that each one of these pens on the relevant transparent, electrically conductive layer and its Position within the electrical potential distribution on the layer by attack the respective local potentials can be determined that these local potentials as control signals for the deflection units (9, 1o) of all connected in the system Cathode ray storage tubes (1, 2) transferred to each writing and re-gas station that the electron beams (19> 20) of the Kathodenstranlspeiche-tubes (1, 2) the current position of the pen (15, 16) on the transparent, Visibly trace the electrically conductive layer on the screens (5, 6). 2. System nach Anspruch 1, dadurch gekennzeichnet, daß die reproduzierbare Potentialverteilung durch alternierendes Anlegen von zwei impulsförmigen Spannungen an zwei auf der durchsichtigen, elektrisch leitenden Schicht (11, 12) angebrachte, senkrecht zueinander liegende Elektrodenpaare (13, 14) erzeugt wird.2. System according to claim 1, characterized in that the reproducible Potential distribution through alternating application of two pulse-shaped voltages on two attached to the transparent, electrically conductive layer (11, 12), electrode pairs (13, 14) lying perpendicular to one another are generated. 3. System nach den Ansprüchen 1 und 2, dadurch gekeunzeich net, daß die durchsichtige, elektrisch leitende Schicht (11, 12) auf der äußeren Oberfläche der Bildschirme (5, 6) der Kathodenstrahlspeicherröhren (1, 2) aus Zinn-Oxyd besteht.3. System according to claims 1 and 2, characterized in that the transparent, electrically conductive layer (11, 12) on the outer surface the screens (5, 6) of the cathode ray storage tubes (1, 2) made of tin oxide. 4. System nach den Ansprüchen 1 und 2, dadurch gekennzeichnet, daß die durchsichtige, elektrisch leitende Schicht (11, 12) auf der Oberfläche der Rildschirme (5, 6) der Kathodenstrahlspeicherröhren (1, 2) aus Indium-Oxyd besteht 4. System according to claims 1 and 2, characterized in that the transparent, electrically conductive layer (11, 12) on the surface of the display screens (5, 6) of the cathode ray storage tubes (1, 2) consists of indium oxide 5. System nach den Ansprüchen 1 bis 4, dadurch gekennzeich net, daß die durchsichtige, elektrisch leitende Schicht (11, 12) direkt auf die Bildschirme (5, 6) der Kathodenstrablspeicherröhren (1, 2) aufgetragen ist 5. System according to claims 1 to 4, characterized in that the transparent, electrically conductive layer (11, 12) directly on the screens (5, 6) of the cathode storage tubes (1, 2) is applied 6. System nach den Ansprüchen 1 bis 4, dadurch gekenr.zeichnet, daß die durchsichtige, elektrisch leitende Schicht (11, 12) auf von den Kathodenstrahlspeicherröhren (1, 2) separaten Kunststoff- oder Glimmerfolien aufgetragen ist, und daß diese Folien auf die äuBere Oberfläche der Bildschirme (5, 6) der Kathodenstrahlspeicherröhren (1, 2) aufgeklebt werden.6. System according to claims 1 to 4, characterized marked, that the transparent, electrically conductive layer (11, 12) on from the cathode ray storage tubes (1, 2) separate plastic or mica films is applied, and that these films on the outer surface of the screens (5, 6) of the cathode ray storage tubes (1, 2) are glued on.
DE2433667A 1974-07-12 1974-07-12 Communications system for transmitting and displaying characters - allows telephone conversation to be illustrated at all receivers by sketches etc. Pending DE2433667A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE2433667A DE2433667A1 (en) 1974-07-12 1974-07-12 Communications system for transmitting and displaying characters - allows telephone conversation to be illustrated at all receivers by sketches etc.
ES439319A ES439319A1 (en) 1974-07-12 1975-07-11 A system for writing, transmitting and reproducing symbols. (Machine-translation by Google Translate, not legally binding)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2433667A DE2433667A1 (en) 1974-07-12 1974-07-12 Communications system for transmitting and displaying characters - allows telephone conversation to be illustrated at all receivers by sketches etc.

Publications (1)

Publication Number Publication Date
DE2433667A1 true DE2433667A1 (en) 1976-01-22

Family

ID=5920443

Family Applications (1)

Application Number Title Priority Date Filing Date
DE2433667A Pending DE2433667A1 (en) 1974-07-12 1974-07-12 Communications system for transmitting and displaying characters - allows telephone conversation to be illustrated at all receivers by sketches etc.

Country Status (2)

Country Link
DE (1) DE2433667A1 (en)
ES (1) ES439319A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3409532A1 (en) * 1984-03-15 1985-09-19 Standard Elektrik Lorenz Ag, 7000 Stuttgart COMMUNICATION TERMINAL
DE3835448A1 (en) * 1987-11-10 1989-05-24 Mitsubishi Electric Corp TELECONFERENCE SYSTEM
US5239373A (en) * 1990-12-26 1993-08-24 Xerox Corporation Video computational shared drawing space

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3409532A1 (en) * 1984-03-15 1985-09-19 Standard Elektrik Lorenz Ag, 7000 Stuttgart COMMUNICATION TERMINAL
FR2561474A1 (en) * 1984-03-15 1985-09-20 Int Standard Electric Corp COMMUNICATION TERMINAL
US4653086A (en) * 1984-03-15 1987-03-24 International Standard Electric Corporation Communication terminal for processing voice and graphical information
DE3835448A1 (en) * 1987-11-10 1989-05-24 Mitsubishi Electric Corp TELECONFERENCE SYSTEM
US5239373A (en) * 1990-12-26 1993-08-24 Xerox Corporation Video computational shared drawing space

Also Published As

Publication number Publication date
ES439319A1 (en) 1977-02-16

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