GB2283846B - Arrangement for interfacing a keyboard with a microprocessor - Google Patents

Arrangement for interfacing a keyboard with a microprocessor

Info

Publication number
GB2283846B
GB2283846B GB9422696A GB9422696A GB2283846B GB 2283846 B GB2283846 B GB 2283846B GB 9422696 A GB9422696 A GB 9422696A GB 9422696 A GB9422696 A GB 9422696A GB 2283846 B GB2283846 B GB 2283846B
Authority
GB
United Kingdom
Prior art keywords
interfacing
microprocessor
keyboard
arrangement
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.)
Expired - Lifetime
Application number
GB9422696A
Other versions
GB2283846A (en
GB9422696D0 (en
Inventor
Ian Murray Garth
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.)
Nokia Services Ltd
Original Assignee
Alcatel Australia Ltd
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 Australia Ltd filed Critical Alcatel Australia Ltd
Publication of GB9422696D0 publication Critical patent/GB9422696D0/en
Publication of GB2283846A publication Critical patent/GB2283846A/en
Application granted granted Critical
Publication of GB2283846B publication Critical patent/GB2283846B/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M11/00—Coding in connection with keyboards or like devices, i.e. coding of the position of operated keys
    • H03M11/20—Dynamic coding, i.e. by key scanning
GB9422696A 1993-11-11 1994-11-10 Arrangement for interfacing a keyboard with a microprocessor Expired - Lifetime GB2283846B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AUPM230193 1993-11-11

Publications (3)

Publication Number Publication Date
GB9422696D0 GB9422696D0 (en) 1995-01-04
GB2283846A GB2283846A (en) 1995-05-17
GB2283846B true GB2283846B (en) 1997-07-16

Family

ID=3777336

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9422696A Expired - Lifetime GB2283846B (en) 1993-11-11 1994-11-10 Arrangement for interfacing a keyboard with a microprocessor

Country Status (2)

Country Link
GB (1) GB2283846B (en)
HK (1) HK1000493A1 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5900829A (en) * 1996-07-23 1999-05-04 Motorola, Inc. Method of and apparatus for detecting key actuations
US6232958B1 (en) 1998-12-29 2001-05-15 Microsoft Corporation Input device with multiplexed switches
CN100592637C (en) * 2006-10-13 2010-02-24 鸿富锦精密工业（深圳）有限公司 Keyboard scanning circuit and method
CN102364881A (en) * 2011-10-18 2012-02-29 捷开通讯科技(上海)有限公司 Key scanning method for electronic equipment
CN105589567B (en) * 2015-11-04 2018-07-31 刘文仲 Hit by hands formula spelling input keyboard and input method

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0188151A1 (en) * 1984-12-20 1986-07-23 Automobiles Peugeot Keyboard device
US4667181A (en) * 1983-07-15 1987-05-19 Honeywell Inc. Keyboard data input assembly
GB2216312A (en) * 1988-04-04 1989-10-04 Fluke Mfg Co John Keyboard scanner apparatus and method
EP0427011A2 (en) * 1989-11-08 1991-05-15 Blaupunkt-Werke GmbH Circuit for determining the state of operation of function keys

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4667181A (en) * 1983-07-15 1987-05-19 Honeywell Inc. Keyboard data input assembly
EP0188151A1 (en) * 1984-12-20 1986-07-23 Automobiles Peugeot Keyboard device
GB2216312A (en) * 1988-04-04 1989-10-04 Fluke Mfg Co John Keyboard scanner apparatus and method
EP0427011A2 (en) * 1989-11-08 1991-05-15 Blaupunkt-Werke GmbH Circuit for determining the state of operation of function keys

Also Published As

Publication number Publication date
GB2283846A (en) 1995-05-17
GB9422696D0 (en) 1995-01-04
HK1000493A1 (en) 1998-03-27

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