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    • 6. 发明授权
    • Determining the location of the tip of an electronic stylus
    • 确定电子笔尖的位置
    • US07489308B2
    • 2009-02-10
    • US10367485
    • 2003-02-14
    • Andrew BlakeLyndsay WilliamsJames SrinivasanWilliam Vablais
    • Andrew BlakeLyndsay WilliamsJames SrinivasanWilliam Vablais
    • G09G5/00
    • G06F3/043G06F3/03545
    • An electronic stylus system includes an electronic stylus and base receiving unit. The electronic stylus includes a first ultrasonic transmitter, a second ultrasonic transmitter, an electromagnetic transmitter, and a writing tip. The base receiver unit includes a first ultrasonic receiver, a second ultrasonic receiver, and an electromagnetic receiver. The ultrasonic receivers of the base unit are operable to receive signals transmitted by the ultrasonic transmitters of the electronic stylus. Similarly, the electromagnetic receiver of the base unit is operable to receive signals transmitted by the electromagnetic transmitter of the stylus. The location of the tip of the electronic stylus relative to a given reference point is determined using the locations of two ultrasonic transmitters relative to the two ultrasonic receivers.
    • 电子测针系统包括电子测针和基座接收单元。 电子笔包括第一超声波发射器,第二超声波发射器,电磁发射器和写入尖端。 基站接收机单元包括第一超声波接收器,第二超声波接收器和电磁接收器。 基本单元的超声波接收器可操作以接收由电子探针的超声波发射器发送的信号。 类似地,基本单元的电磁接收器可操作以接收由触控笔的电磁发射器发送的信号。 使用两个超声波发射器相对于两个超声波接收器的位置来确定电子针的尖端相对于给定参考点的位置。
    • 10. 发明授权
    • Methods and apparatus for transmitting power and data using the human body
    • 使用人体传输动力和数据的方法和装置
    • US08064953B2
    • 2011-11-22
    • US12356477
    • 2009-01-20
    • Lyndsay WilliamsWilliam VablaisSteven N. Bathiche
    • Lyndsay WilliamsWilliam VablaisSteven N. Bathiche
    • H04M1/00
    • H04Q9/04H04B13/005
    • Methods and apparatus for distributing power and data to devices coupled to the human body are described. The human body is used as a conductive medium, e.g., a bus, over which power and/or data is distributed. Power is distributed by coupling a power source to the human body via a first set of electrodes. One or more devices to be powered, e.g., peripheral devices, are also coupled to the human body via additional sets of electrodes. The devices may be, e.g., a speaker, display, watch, keyboard, etc. A pulsed DC signal or AC signal may be used as the power source. By using multiple power supply signals of differing frequencies, different devices can be selectively 15 powered. For example, a 100 Hz signal may be used to power a first device while a 150 Hz signal may be used to power a second device. Digital data and/or other information signals, e.g., audio signals, can be modulated on the power signal using frequency and/or amplitude modulation techniques. The power source and peripheral devices can interact to form a complete computer network where the body serves as the bus coupling the devices together. Devices can include optional batteries, one or more CPUs, transmit/receive circuitry, and/or input/output circuitry. In one particular exemplary network implementation the first device to be placed on the body operates as a master device, e.g., bus master, with one or more subsequently added devices working as slaves.
    • 描述了将功率和数据分配到耦合到人体的设备的方法和装置。 人体用作导电介质,例如总线,功率和/或数据分布在该总线上。 通过经由第一组电极将电源耦合到人体来分配功率。 要供电的一个或多个设备,例如外围设备,还通过另外的电极组耦合到人体。 这些装置可以是例如扬声器,显示器,手表,键盘等。脉冲DC信号或AC信号可以用作电源。 通过使用不同频率的多个电源信号,不同的设备可以选择性地被供电。 例如,可以使用100Hz信号来为第一设备供电,而可以使用150Hz信号为第二设备供电。 可以使用频率和/或幅度调制技术在功率信号上调制数字数据和/或其他信息信号,例如音频信号。 电源和外围设备可以相互作用以形成一个完整的计算机网络,其中主体用作将设备耦合在一起的总线。 设备可以包括可选电池,一个或多个CPU,发射/接收电路和/或输入/输出电路。 在一个特定的示例性网络实现中,要放置在主体上的第一设备作为主设备(例如,总线主机)操作,其中一个或多个随后添加的设备用作从设备。