AUTOMATIC SWITCH DEVICE BY SENSING DIRECTION FOR A HANDHELD APPARATUS HAVING DOUBLE-SIDED KEYPAD ARRANGEMENT,申请号US20080046648-传众专利搜索

AUTOMATIC SWITCH DEVICE BY SENSING DIRECTION FOR A HANDHELD APPARATUS HAVING DOUBLE-SIDED KEYPAD ARRANGEMENT

申请公布号：US2009234503(A1)

申请号：US20080046648

申请日期：2008.03.12

申请公布日期：2009.09.17

申请人：

CHEN SHOEL-LAI;HSU CHE-HAO

发明人：CHEN SHOEL-LAI;HSU CHE-HAO

分类号：G05B13/00;G05B15/00

主分类号：G05B13/00

摘要：A switch device disposed in a handheld apparatus having double-sided keypad arrangement is capable of automatically switching to enable a keypad on an upward side and disable the downward keypad by means of sensing directionality of the apparatus. The handheld apparatus has a cuboidal housing, whose two opposite sides equip a keypad, respectively. The switch device in the apparatus has a gravity sensor for detecting a distribution of gravity of the apparatus along three coordinate axes. The senor sends a gravity signal to a controller, which judges a direction of the apparatus being disposed. The controller sends a switching signal to a relay connected to the two keypads. The relay controls either of the keypads to be available.