公开(公告)号：US07479902B2

公开(公告)日：2009-01-20

申请号：US11411315

申请日：2006-04-26

申请人： Lichen Wang ,  Keming Yeh ,  Siew Ming Yong

发明人： Lichen Wang ,  Keming Yeh ,  Siew Ming Yong

IPC分类号： H03M11/00

CPC分类号： H01H13/86 ,  G06F1/1632 ,  G06F3/0202 ,  G06F3/0221 ,  G06F3/023 ,  G06F3/0231 ,  H01H2223/05

摘要： A versatile and mobile keyboard and a highly energy efficient keyboard scanning method are provided. The keyboard may be used with a variety of mobile devices such as PDAs, cellular phones, and tablet PCs, through various interfaces such as an IR, USB, or Bluetooth™ interface. In particular, an IR head assembly is provided that includes an IR head, a movable arm on which the IR head is mounted, and a connector for attaching to a docking structure. The docking structure may be attached to a keypad, which is electrically coupled to the IR head for transmitting keystroke data through the IR head. When a mobile device is docked on the docking structure, the arm in the IR assembly may be moved to an optimal distance from the IR port of the mobile device to ensure high communication performance between the keyboard and the mobile device. An energy efficient keyboard scanning method utilizes higher-valued pull-up resistors for energy conservation. The keyboard scanning method includes a charging step to charge stray capacitance associated with the keys. The keyboard scanning method can also be operated at a variable scanning frequency.

摘要翻译： 提供了多功能和移动键盘以及高能效的键盘扫描方法。 键盘可以通过诸如IR，USB或Bluetooth TM接口的各种接口与诸如PDA，蜂窝电话和平板电脑的各种移动设备一起使用。 特别地，提供了一种IR头组件，其包括IR头，安装IR头的可动臂和用于附接到对接结构的连接器。 对接结构可以附接到键盘，该键盘电耦合到IR头以通过IR头发送击键数据。 当移动设备对接在对接结构上时，IR组件中的臂可以移动到距离移动设备的IR端口最佳距离，以确保键盘和移动设备之间的高通信性能。 节能键盘扫描方法利用更高价值的上拉电阻进行节能。 键盘扫描方法包括对与键相关的杂散电容进行充电的充电步骤。 键盘扫描方法也可以以可变的扫描频率进行操作。

公开(公告)号：US06999008B2

公开(公告)日：2006-02-14

申请号：US10277462

申请日：2002-10-21

申请人： Lichen Wang ,  Keming Yeh ,  Siew Ming Yong

发明人： Lichen Wang ,  Keming Yeh ,  Siew Ming Yong

IPC分类号： H03K17/94

CPC分类号： H01H13/86 ,  G06F1/1632 ,  G06F3/0202 ,  G06F3/0221 ,  G06F3/023 ,  G06F3/0231 ,  H01H2223/05

摘要： A versatile and mobile keyboard and a highly energy efficient keyboard scanning method are provided. The keyboard may be used with a variety of mobile devices such as PDAs, cellular phones, and tablet PCs, through various interfaces such as an IR, USB, or Bluetooth™ interface. In particular, an IR head assembly is provided that includes an IR head, a movable arm on which the IR head is mounted, and a connector for attaching to a docking structure. The docking structure may be attached to a keypad, which is electrically coupled to the IR head for transmitting keystroke data through the IR head. When a mobile device is docked on the docking structure, the arm in the IR assembly may be moved to an optimal distance from the IR port of the mobile device to ensure high communication performance between the keyboard and the mobile device. An energy efficient keyboard scanning method utilizes higher-valued pull-up resistors for energy conservation. The keyboard scanning method includes a charging step to charge stray capacitance associated with the keys. The keyboard scanning method can also be operated at a variable scanning frequency.