Coded data generation or conversion – Bodily actuated code generator – Including keyboard or keypad
Reexamination Certificate
2007-01-02
2007-01-02
Edwards, Jr., Timothy (Department: 2612)
Coded data generation or conversion
Bodily actuated code generator
Including keyboard or keypad
C341S022000, C713S340000
Reexamination Certificate
active
10688597
ABSTRACT:
A key switch102formed by arranging a plurality of key contacts SW11, SW12, SW21, SW22, . . . at cross points of a key matrix is provided with a power supply control key (SW11), and a key scan circuit101for detecting open/close states of the plural key contacts of the key switch102is independently arranged from a power supply control key state detecting means for detecting the open/close state of the contact SW11of the power supply control key. The depression of the power supply control key (SW11) is detected by the power supply control key state detecting means. When the operation is ended, or the power supply is turned OFF, the depression of the power supply control key is detected by the key scan circuit101, and the supply of the electric power is stopped.
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IBM Technical Disclosure Bulletin, vol. 33, No. 5; Oct. 1990; pp. 237-238; Interface of a Low-Power Keyboard for Lap-Top Computers.
Sasaki Hironobu
Tsugane Hideshi
Edwards, Jr. Timothy
Matsushita Electric - Industrial Co., Ltd.
Pearne & Gordon LLP
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