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    • 5. 发明授权
    • Apparatus and method for driving a pulsed laser diode
    • 用于驱动脉冲激光二极管的装置和方法
    • US07545839B2
    • 2009-06-09
    • US10751301
    • 2004-01-02
    • David M. GiorgiJay PhilippbarJames Long
    • David M. GiorgiJay PhilippbarJames Long
    • H01S3/00
    • H01S5/042H01S5/0428
    • To achieve both a fast risetime and a desired flat top current pulse, or to be able to independently specify a risetime and pulse width (energy), a supplemental or “fast” voltage discharge stage (or multiple supplemental or “fast” voltage discharge stages) having a faster and shorter voltage discharge characteristic and a higher starting voltage relative to the main or “slow” voltage discharge stage is used in parallel with the slow voltage discharge stage. The energy storage element of the slow voltage discharge stage has sufficient energy storage at an appropriate voltage level for maintaining the desired flat top current throughout the pulse duration, while the energy storage element of the fast voltage discharge stage has less energy storage capability but a higher starting voltage for achieving the desired fast current pulse risetime. Preferably, a single closing switch is used to couple all energy storage elements to the laser diode to pulse it, although respective separate switches may be used to couple the energy storage elements of the various voltage discharge stages to the laser diode.
    • 为了实现快速上升时间和期望的平顶电流脉冲,或能够独立地指定上升时间和脉冲宽度(能量),补充或“快速”电压放电级(或多个补充或“快速”电压放电级 )与慢电压放电级并联使用具有相对于主或“慢”电压放电级的更快和更短的电压放电特性和较高的启动电压。 慢电压放电级的能量存储元件在适当的电压电平下具有足够的能量存储,以在整个脉冲持续时间内保持期望的平顶电流,而快速放电级的能量存储元件具有较少的能量存储能力,但是较高的 用于实现期望的快速电流脉冲上升时间的启动电压。 优选地,单个闭合开关用于将所有能量存储元件耦合到激光二极管以对其进行脉冲,尽管各个单独的开关可用于将各种电压放电级的能量存储元件耦合到激光二极管。
    • 8. 发明申请
    • FSK data communications using voice modem
    • FSK数据通信使用语音调制解调器
    • US20070064782A1
    • 2007-03-22
    • US11230840
    • 2005-09-20
    • Jeremy ElliottJames Long
    • Jeremy ElliottJames Long
    • H04L5/16
    • H04L27/10H04L5/143
    • A method for transferring data over a communication link using a data rate and a voice modem not designed to provide communications at the data rate, includes generating, in a processor, a modulated FSK signal from an outgoing data stream. The voice modem, in playback mode, plays the modulated FSK signal over the communication link. The voice modem, in record mode, receives voice data from the communication link and sends the voice data to the processor, which demodulates any FSK signal that is present in the voice wave data to produce an incoming data stream.
    • 一种使用数据速率通过通信链路传送数据的方法和不被设计为以数据速率提供通信的语音调制解调器的方法包括在处理器中从输出数据流生成调制的FSK信号。 在播放模式下的语音调制解调器通过通信链路播放已调制的FSK信号。 在记录模式下的语音调制解调器从通信链路接收语音数据,并将语音数据发送到处理器,该处理器对存在于语音数据中的任何FSK信号进行解调以产生输入数据流。