Title:
KEY TOUCH CONFIRMATION DEVICE AND PORTABLE INFORMATION DEVICE
Document Type and Number:
Japanese Patent JP2007172199
Kind Code:
A
Abstract:
To provide a key touch confirmation device for notifying of key operation by a means other than sound.
A key touch detection part 13 detects operation of a key of a key input part 12. A display control part 14 changes, upon detection of the key operation by the detection part 13, the background color of an information display screen 11 to notify a user of this key operation.
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Inventors:
AKATSU HIDEYUKI
Application Number:
JP2005367474A
Publication Date:
July 05, 2007
Filing Date:
December 21, 2005
Export Citation:
Assignee:
NEC CORP
International Classes:
H04M1/00; G06F3/02; H04M1/02
Domestic Patent References:
| JPH0276018A | 1990-03-15 | |||
| JPS6324634A | 1988-02-02 | |||
| JPH04293112A | 1992-10-16 | |||
| JPH03141417A | 1991-06-17 | |||
| JPH08162992A | 1996-06-21 | |||
| JP2003023474A | 2003-01-24 |
Attorney, Agent or Firm:
Kiyoshi Inagaki
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