IT1249890B - Dispositivo di regolazione di visione per visualizzatore alfanumerico di apparecchio telefonico - Google Patents

Dispositivo di regolazione di visione per visualizzatore alfanumerico di apparecchio telefonico

Info

Publication number
IT1249890B
IT1249890B ITTO910412A ITTO910412A IT1249890B IT 1249890 B IT1249890 B IT 1249890B IT TO910412 A ITTO910412 A IT TO910412A IT TO910412 A ITTO910412 A IT TO910412A IT 1249890 B IT1249890 B IT 1249890B
Authority
IT
Italy
Prior art keywords
display
microcontroller
alphanumeric telephone
alphanumeric
vision
Prior art date
Application number
ITTO910412A
Other languages
English (en)
Inventor
Philippe Camuzard
Gerard Cardot
Original Assignee
Alcatel Business Systems
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 Alcatel Business Systems filed Critical Alcatel Business Systems
Publication of ITTO910412A0 publication Critical patent/ITTO910412A0/it
Publication of ITTO910412A1 publication Critical patent/ITTO910412A1/it
Application granted granted Critical
Publication of IT1249890B publication Critical patent/IT1249890B/it

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/02—Constructional features of telephone sets
    • H04M1/22—Illumination; Arrangements for improving the visibility of characters on dials

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Testing, Inspecting, Measuring Of Stereoscopic Televisions And Televisions (AREA)
  • Telephone Set Structure (AREA)
  • Television Receiver Circuits (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)

Abstract

Dispositivo atto ad effettuare una regolazione ottimizzata di visione per visualizzatore alfanumerico (1) di cui è equipaggiato un posto telefonico dotato di un microcontrollore (2).Un morsetto di regolazione di luminosità (9) del visualizzatore posseduto dal microcontrollore è attaccato da una tensione continua il cui valore è regolato tramite un ponte divisore a resistenze (13, 14, 15) commutate da interruttori elettronici (17, 18) che il microcontrollore comanda.
ITTO910412A 1990-06-01 1991-05-31 Dispositivo di regolazione di visione per visualizzatore alfanumerico di apparecchio telefonico IT1249890B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR9006866A FR2662892B1 (fr) 1990-06-01 1990-06-01 Dispositif de reglage de vision pour afficheur alphanumerique de poste telephonique.

Publications (3)

Publication Number Publication Date
ITTO910412A0 ITTO910412A0 (it) 1991-05-31
ITTO910412A1 ITTO910412A1 (it) 1992-12-01
IT1249890B true IT1249890B (it) 1995-03-30

Family

ID=9397209

Family Applications (1)

Application Number Title Priority Date Filing Date
ITTO910412A IT1249890B (it) 1990-06-01 1991-05-31 Dispositivo di regolazione di visione per visualizzatore alfanumerico di apparecchio telefonico

Country Status (4)

Country Link
DK (1) DK102791A (it)
ES (1) ES2038070B1 (it)
FR (1) FR2662892B1 (it)
IT (1) IT1249890B (it)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6159477A (ja) * 1984-08-22 1986-03-26 日本デ−タゼネラル株式会社 表示装置用デイジタルコントラスト調節回路
JPS63177643A (ja) * 1987-01-19 1988-07-21 Matsushita Electric Ind Co Ltd ボタン電話機
JPH01207790A (ja) * 1988-02-16 1989-08-21 Nec Corp 液晶表示器付小型装置
FR2634610B1 (fr) * 1988-07-25 1990-10-26 France Etat Terminal de telecommunication a commande de fonctions perfectionnee
JPH02250546A (ja) * 1989-03-24 1990-10-08 Toshiba Corp 電話機

Also Published As

Publication number Publication date
FR2662892A1 (fr) 1991-12-06
FR2662892B1 (fr) 1995-06-16
ITTO910412A1 (it) 1992-12-01
DK102791D0 (da) 1991-05-30
ES2038070B1 (es) 1994-11-16
DK102791A (da) 1991-12-02
ITTO910412A0 (it) 1991-05-31
ES2038070A1 (es) 1993-07-01

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Legal Events

Date Code Title Description
0001 Granted
TA Fee payment date (situation as of event date), data collected since 19931001

Effective date: 19950531