公开(公告)号：US06516035B1

公开(公告)日：2003-02-04

申请号：US09545229

申请日：2000-04-07

申请人： Lichen Wang ,  Keming W. Yeh

发明人： Lichen Wang ,  Keming W. Yeh

IPC分类号： H04B1404

CPC分类号： H03M5/145 ,  H04L25/4908

摘要： A method includes a data encoding scheme that has a run length limit of (1,6) and a 25% duty cycle. With error correction, the method achieves an effective run length limit of (2,9). The method can be used in conjunction with a packetized communication protocol to allow multiple controllers to communicate with multiple peripheral devices in a wireless data network. Peripheral devices include pointing devices, keyboards and game pads.

摘要翻译： 一种方法包括具有游程长度限制（1,6）和25％占空比的数据编码方案。 通过纠错，该方法实现了有效的运行长度限制（2,9）。 该方法可以与分组通信协议结合使用，以允许多个控制器与无线数据网络中的多个外围设备进行通信。 外围设备包括指点设备，键盘和游戏键盘。

公开(公告)号：US20060071820A1

公开(公告)日：2006-04-06

申请号：US11282889

申请日：2005-11-18

申请人： Lichen Wang ,  Keming Yeh

发明人： Lichen Wang ,  Keming Yeh

IPC分类号： H03M11/00 ,  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.

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：US5664204A

公开(公告)日：1997-09-02

申请号：US640310

申请日：1996-04-30

申请人： Lichen Wang

发明人： Lichen Wang

IPC分类号： G06F1/26 ,  G06F1/32

CPC分类号： G06F1/26

摘要： An apparatus and a method for using a host port to provide power to a level converter for voltage level conversion between a CMOS based palm-top computer and RS-232 host processor are disclosed. Energy from the host RS-232 port is extracted by the level converter from the request-to-send line (-12 V) and the data-terminal-ready line (+12 V). The host port request-to-send line may also be used to send a wake-up signal to turn on the palm-top computer. A momentary (1 millisecond) transition in the request-to-send line of the host port causes the level converter to present an appropriate signal on the wake-up pin of the palm-top computer.

摘要翻译： 公开了一种使用主机端口为基于CMOS的掌上电脑和RS-232主处理器之间的电压电平转换的电平转换器提供电力的装置和方法。 来自主机RS-232端口的能量由电平转换器从请求发送线（-12 V）和数据终端就绪线（+12 V）提取。 主机端口请求发送线路也可用于发送唤醒信号以打开掌上电脑。 在主机端口的请求发送线路中的瞬时（1毫秒）转换使电平转换器在掌上电脑的唤醒引脚上呈现适当的信号。

公开(公告)号：US20060077074A1

公开(公告)日：2006-04-13

申请号：US11282281

申请日：2005-11-18

申请人： Lichen Wang ,  Keming Yeh

发明人： Lichen Wang ,  Keming Yeh

IPC分类号： H03M11/00 ,  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.

公开(公告)号：US07450031B2

公开(公告)日：2008-11-11

申请号：US11282281

申请日：2005-11-18

申请人： Lichen Wang ,  Keming Yeh

发明人： Lichen Wang ,  Keming Yeh

IPC分类号： H03K17/00

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：US20060192689A1

公开(公告)日：2006-08-31

申请号：US11411315

申请日：2006-04-26

申请人： Lichen Wang ,  Keming Yeh ,  Siew Yong

发明人： Lichen Wang ,  Keming Yeh ,  Siew Yong

IPC分类号： H03M11/00 ,  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.

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.