发明名称 Keypad apparatus and method for inputting data and characters for a computing device or cellular phone
摘要 A keypad and key device featuring a plurality of contacts on the rear face of a keypad key that each mate with an individual contact pad from a plurality of contact pads placed below the upwardly biased and tiltable keys. Pushing a key on a right side or left side mates different pairs of contacts and contact pads generating different characters for input to a cellular phone or small computer. Pushing the key in the center will generate a third character by mating both contacts with both contact pads. The keys may also have more than two contacts mating with more than two contact pads and tilt to a variety of positions to mate the respective contacts with contact pads. Consequently, one depression of a key enables any one of a plurality of characters assigned thereto to be inputted which is effective in accelerating a data inputting process.
申请公布号 US6911970(B2) 申请公布日期 2005.06.28
申请号 US20020109941 申请日期 2002.03.29
申请人 WEN TAI CHUN 发明人 WEN TAI CHUN
分类号 G06F3/023;H01H13/64;H01H13/70;H03M11/22;H04M1/23;(IPC1-7):G09G5/00 主分类号 G06F3/023
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