IT1249890B - VISION REGULATION DEVICE FOR ALPHANUMERIC TELEPHONE DEVICE DISPLAY - Google Patents

VISION REGULATION DEVICE FOR ALPHANUMERIC TELEPHONE DEVICE DISPLAY

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
Italian (it)
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/en
Publication of ITTO910412A1 publication Critical patent/ITTO910412A1/en
Application granted granted Critical
Publication of IT1249890B publication Critical patent/IT1249890B/en

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

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.Device designed to perform an optimized vision adjustment for alphanumeric display (1) with which a telephone station equipped with a microcontroller (2) is equipped. A brightness adjustment terminal (9) of the display owned by the microcontroller is connected by a direct voltage the value of which is regulated by a divider bridge with resistances (13, 14, 15) switched by electronic switches (17, 18) which the microcontroller controls.

ITTO910412A 1990-06-01 1991-05-31 VISION REGULATION DEVICE FOR ALPHANUMERIC TELEPHONE DEVICE DISPLAY IT1249890B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR9006866A FR2662892B1 (en) 1990-06-01 1990-06-01 VISION ADJUSTMENT DEVICE FOR ALPHANUMERIC TELEPHONE DISPLAY.

Publications (3)

Publication Number Publication Date
ITTO910412A0 ITTO910412A0 (en) 1991-05-31
ITTO910412A1 ITTO910412A1 (en) 1991-12-02
IT1249890B true IT1249890B (en) 1995-03-30

Family

ID=9397209

Family Applications (1)

Application Number Title Priority Date Filing Date
ITTO910412A IT1249890B (en) 1990-06-01 1991-05-31 VISION REGULATION DEVICE FOR ALPHANUMERIC TELEPHONE DEVICE DISPLAY

Country Status (4)

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

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6159477A (en) * 1984-08-22 1986-03-26 日本デ−タゼネラル株式会社 Digital contrast adjusting circuit for display unit
JPS63177643A (en) * 1987-01-19 1988-07-21 Matsushita Electric Ind Co Ltd Key telephone set
JPH01207790A (en) * 1988-02-16 1989-08-21 Nec Corp Miniature device with liquid crystal display device
FR2634610B1 (en) * 1988-07-25 1990-10-26 France Etat TELECOMMUNICATION TERMINAL WITH IMPROVED FUNCTION CONTROL
JPH02250546A (en) * 1989-03-24 1990-10-08 Toshiba Corp Telephone set

Also Published As

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

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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