Invention Grant
- Patent Title: Compact universal keyboard
- Patent Title (中): 紧凑型通用键盘
-
Application No.: US09768829Application Date: 2001-01-25
-
Publication No.: US07439957B2Publication Date: 2008-10-21
- Inventor: Frank Rui-Feng Chu , Noboru Kamijo , Denny Duan-lee Tang
- Applicant: Frank Rui-Feng Chu , Noboru Kamijo , Denny Duan-lee Tang
- Applicant Address: US NY Armonk
- Assignee: International Business Machines Corporation
- Current Assignee: International Business Machines Corporation
- Current Assignee Address: US NY Armonk
- Agency: IP Authority, LLC
- Agent Ramraj Soundararajan; Leonard Guzman
- Main IPC: G09G5/00
- IPC: G09G5/00

Abstract:
A keyboard type input device has multiple key positions provided as character entry keys. Each key corresponds to one key in the selected row of the conventional QWERTY keyboard. A second set of control buttons provide for the selection of which row of a conventional QWERTY keyboard are represented by the character keys in addition to other functions such as case shift, and alpha-numerical control functions. A selected row is shown on a display, as visual feedback. Alternatively the keys are implemented as LCDs with pressure sensors and the characters of the selected row are displayed directly on the corresponding key positions. The keyboard finds particular use in portable devices as it demands less space than traditional keyboards. The keyboard type input device is implemented with various electronic appliances, including portable phones.
Public/Granted literature
- US20020097227A1 Compact universal keyboard Public/Granted day:2002-07-25
Information query