JPS6451793A - Telephone system - Google Patents

Telephone system

Info

Publication number
JPS6451793A
JPS6451793A JP20825487A JP20825487A JPS6451793A JP S6451793 A JPS6451793 A JP S6451793A JP 20825487 A JP20825487 A JP 20825487A JP 20825487 A JP20825487 A JP 20825487A JP S6451793 A JPS6451793 A JP S6451793A
Authority
JP
Japan
Prior art keywords
input
invalid
valid
main control
control device
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
JP20825487A
Other languages
Japanese (ja)
Inventor
Yoshihiro Tanigawa
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.)
Canon Inc
Original Assignee
Canon Inc
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 Canon Inc filed Critical Canon Inc
Priority to JP20825487A priority Critical patent/JPS6451793A/en
Publication of JPS6451793A publication Critical patent/JPS6451793A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE:To prevent the key input data of an invalid input from being transmitted to a main control device side, and to lighten the load of the main control device by indicating keys, now being valid for an input, on a telephone set. CONSTITUTION:When a power source is applied to the telephone set 1, such initial processing that information to invalidate the input of all the functional keys of a key board 16 is written in a memory 13 and all the lamps of a display part 17 are put out, is performed. Next, when functional key valid/invalid instructing information from a main control device 30 is received, a state table in the memory 13 is updated according to a received instruction state, and afterward, display corresponding to all the functional keys of the display part 17 is lighted when the corresponding data of the state table is ON and the input is valid, and when OFF and invalid, the display is put out.
JP20825487A 1987-08-24 1987-08-24 Telephone system Pending JPS6451793A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP20825487A JPS6451793A (en) 1987-08-24 1987-08-24 Telephone system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP20825487A JPS6451793A (en) 1987-08-24 1987-08-24 Telephone system

Publications (1)

Publication Number Publication Date
JPS6451793A true JPS6451793A (en) 1989-02-28

Family

ID=16553201

Family Applications (1)

Application Number Title Priority Date Filing Date
JP20825487A Pending JPS6451793A (en) 1987-08-24 1987-08-24 Telephone system

Country Status (1)

Country Link
JP (1) JPS6451793A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001025945A1 (en) * 1999-10-05 2001-04-12 Kabushiki Kaisha Kenwood Mobile communication terminal
JP2002237878A (en) * 2000-12-21 2002-08-23 Nokia Corp Communication unit having internally changeable element
JP2016134743A (en) * 2015-01-19 2016-07-25 株式会社日立国際八木ソリューションズ Private wireless system

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61181296A (en) * 1985-02-06 1986-08-13 Nec Corp Key telephone set

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61181296A (en) * 1985-02-06 1986-08-13 Nec Corp Key telephone set

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001025945A1 (en) * 1999-10-05 2001-04-12 Kabushiki Kaisha Kenwood Mobile communication terminal
JP2002237878A (en) * 2000-12-21 2002-08-23 Nokia Corp Communication unit having internally changeable element
US7397413B2 (en) 2000-12-21 2008-07-08 Nokia Corporation Communication unit provided with intra-changeable elements
JP2016134743A (en) * 2015-01-19 2016-07-25 株式会社日立国際八木ソリューションズ Private wireless system

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