公开(公告)号：US08314723B2

公开(公告)日：2012-11-20

申请号：US12511997

申请日：2009-07-29

申请人： Chiung-Chih Huang ,  Wen-Tong Liu ,  Kuo-Fu Kuo

发明人： Chiung-Chih Huang ,  Wen-Tong Liu ,  Kuo-Fu Kuo

IPC分类号： H03M11/00

CPC分类号： H03M11/003

摘要： A ghost key detecting circuit includes at least first and second scan lines, at least first and second return lines, a plurality of switch elements, and a level detecting circuit. The level detecting circuit is used for performing level detection upon measured voltage values at the first and second return lines. When a measured voltage value at a return line is greater than or equal to a reference voltage value, the level detecting circuit generates a logic signal for indicating that a switch element corresponding to the return line at a current scan line is turned off. When the measured voltage value is smaller than the reference voltage value, the level detecting circuit generates a logic signal for indicating that the switch element is turned on.

摘要翻译： 幽灵键检测电路至少包括第一和第二扫描线，至少第一和第二返回线，多个开关元件和电平检测电路。 电平检测电路用于在第一和第二返回线处的测量电压值上执行电平检测。 当返回线路上的测量电压值大于或等于参考电压值时，电平检测电路产生用于指示与当前扫描线上的返回线对应的开关元件断开的逻辑信号。 当测量的电压值小于参考电压值时，电平检测电路产生用于指示开关元件导通的逻辑信号。

公开(公告)号：US20100253554A1

公开(公告)日：2010-10-07

申请号：US12511997

申请日：2009-07-29

申请人： Chiung-Chih Huang ,  Wen-Tong Liu ,  Kuo-Fu Kuo

发明人： Chiung-Chih Huang ,  Wen-Tong Liu ,  Kuo-Fu Kuo

IPC分类号： H01H13/70

CPC分类号： H03M11/003

摘要： A ghost key detecting circuit includes at least first and second scan lines, at least first and second return lines, a plurality of switch elements, and a level detecting circuit. The level detecting circuit is used for performing level detection upon measured voltage values at the first and second return lines. When a measured voltage value at a return line is greater than or equal to a reference voltage value, the level detecting circuit generates a logic signal for indicating that a switch element corresponding to the return line at a current scan line is turned off. When the measured voltage value is smaller than the reference voltage value, the level detecting circuit generates a logic signal for indicating that the switch element is turned on.

摘要翻译： 幽灵键检测电路至少包括第一和第二扫描线，至少第一和第二返回线，多个开关元件和电平检测电路。 电平检测电路用于在第一和第二返回线处的测量电压值上执行电平检测。 当返回线路上的测量电压值大于或等于参考电压值时，电平检测电路产生用于指示与当前扫描线上的返回线对应的开关元件断开的逻辑信号。 当测量的电压值小于参考电压值时，电平检测电路产生用于指示开关元件导通的逻辑信号。

公开(公告)号：US08264384B2

公开(公告)日：2012-09-11

申请号：US12318827

申请日：2009-01-09

申请人： Mao-Ta Tsao ,  Wen-Tong Liu

发明人： Mao-Ta Tsao ,  Wen-Tong Liu

IPC分类号： H04M11/00

CPC分类号： H03M11/003

摘要： A keyboard control circuit for a keyboard having P keys includes an array module that includes P key switches, and a key-matrix having N scan lines that intersect M return lines to form N×M intersections, where P

摘要翻译： 具有P键的键盘的键盘控制电路包括具有P个键开关的阵列模块和具有与M个返回线相交的N条扫描线的键矩阵，以形成N×M个交点，其中P

公开(公告)号：US20100073204A1

公开(公告)日：2010-03-25

申请号：US12318827

申请日：2009-01-09

申请人： Mao-Ta Tsao ,  Wen-Tong Liu

发明人： Mao-Ta Tsao ,  Wen-Tong Liu

IPC分类号： H03M11/00

CPC分类号： H03M11/003

摘要： A keyboard control circuit for a keyboard having P keys includes an array module that includes P key switches, and a key-matrix having N scan lines that intersect M return lines to form N×M intersections, where P

摘要翻译： 具有P键的键盘的键盘控制电路包括具有P个键开关的阵列模块和具有与M个返回线相交的N条扫描线的键矩阵，以形成N×M个交点，其中P

公开(公告)号：US08749407B2

公开(公告)日：2014-06-10

申请号：US12502432

申请日：2009-07-14

申请人： Wen-Tong Liu ,  Chien-Hui Chang

发明人： Wen-Tong Liu ,  Chien-Hui Chang

IPC分类号： H03K17/94 ,  H03M11/00 ,  G06F13/12 ,  G06F13/38

CPC分类号： H03M11/003

摘要： The present invention discloses a method and system for detecting hidden ghost keys on a keyboard matrix. The keyboard matrix is composed of multiple rows crossing with multiple lines that form multiple key-locating positions. The method comprises: selecting multiple preset keys from the matrix; detecting ghost keys among the matrix based on the selected preset keys; selecting multiple examining keys from the preset keys and the detected ghost keys, based on that at least one ghost key is included in the examining keys; and determining hidden ghost keys based on the examining keys. The system detects ghost keys among the matrix via a preset key selecting unit and a ghost key detecting unit, which selects multiple examining keys via an examining key selecting unit, and determines hidden ghost keys based on the examining keys through a hidden ghost keys detecting unit.

摘要翻译： 本发明公开了一种用于检测键盘矩阵上隐藏的鬼键的方法和系统。 键盘矩阵由多行交叉组成，多行形成多个键位置。 该方法包括：从矩阵中选择多个预设密钥; 基于所选择的预设键检测矩阵中的重键; 基于该检查键中包含至少一个重影键，从预设键和检测到的重影键中选择多个检查键; 以及基于检查密钥确定隐藏的鬼魂键。 该系统经由预设键选择单元和重影键检测单元检测矩阵中的重键，其经由检查键选择单元选择多个检查键，并且通过隐藏的鬼键检测单元基于检查键确定隐藏的重影键 。