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TW200516503A - Keyboard scanning device - Google Patents

Keyboard scanning device

Info

Publication number
TW200516503A
TW200516503A TW092131754A TW92131754A TW200516503A TW 200516503 A TW200516503 A TW 200516503A TW 092131754 A TW092131754 A TW 092131754A TW 92131754 A TW92131754 A TW 92131754A TW 200516503 A TW200516503 A TW 200516503A
Authority
TW
Taiwan
Prior art keywords
controller
keyboard
signal lines
array
scanning device
Prior art date
Application number
TW092131754A
Other languages
Chinese (zh)
Other versions
TWI313839B (en
Inventor
Yung-Pin Chung
Chih-Hung Yu
Original Assignee
Mitac Int Corp
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 Mitac Int Corp filed Critical Mitac Int Corp
Priority to TW92131754A priority Critical patent/TWI313839B/en
Publication of TW200516503A publication Critical patent/TW200516503A/en
Application granted granted Critical
Publication of TWI313839B publication Critical patent/TWI313839B/en

Links

Landscapes

  • Input From Keyboards Or The Like (AREA)

Abstract

A keyboard scanning device includes a controller and a keyboard array. The keyboard array has a plurality of signal lines arranged in multiple rows and multiple columns. Each of the row signal lines is electrically coupled to the output terminal of the controller to get a keyboard scanning single in order. Each of the column signal lines is electrically coupled to the input terminal of the controller and get a voltage signal. In addition, each one of the cross sections of the row and column signal lines serially couples to a button and a diode. When pushing multiple buttons at the same time, the diode array can prevent the keyboard array from logic fault so that the controller can correctly diagnose the stroke situation of every button.
TW92131754A 2003-11-13 2003-11-13 Keyboard scanning device TWI313839B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
TW92131754A TWI313839B (en) 2003-11-13 2003-11-13 Keyboard scanning device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
TW92131754A TWI313839B (en) 2003-11-13 2003-11-13 Keyboard scanning device

Publications (2)

Publication Number Publication Date
TW200516503A true TW200516503A (en) 2005-05-16
TWI313839B TWI313839B (en) 2009-08-21

Family

ID=45072843

Family Applications (1)

Application Number Title Priority Date Filing Date
TW92131754A TWI313839B (en) 2003-11-13 2003-11-13 Keyboard scanning device

Country Status (1)

Country Link
TW (1) TWI313839B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI487279B (en) * 2009-12-21 2015-06-01 Hon Hai Prec Ind Co Ltd Scanning circuit for keyboard and method and electronic device using the same

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI487279B (en) * 2009-12-21 2015-06-01 Hon Hai Prec Ind Co Ltd Scanning circuit for keyboard and method and electronic device using the same

Also Published As

Publication number Publication date
TWI313839B (en) 2009-08-21

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Legal Events

Date Code Title Description
MM4A Annulment or lapse of patent due to non-payment of fees