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22. 发明授权

US07554471B2 System and method for improving linearity of a DAC 有权
标题翻译：提高DAC线性度的系统和方法
公开(公告)号：US07554471B2
公开(公告)日：2009-06-30
申请号：US11591231
申请日：2006-11-01
申请人： Kenneth Kung-Juh Tsai , John Chan Phan
发明人： Kenneth Kung-Juh Tsai , John Chan Phan
IPC分类号： H03M1/20
CPC分类号： H03M1/0641 , H03M1/0614 , H03M1/66
摘要： A system and method for improving the linearity of a digital-to-analog converter (DAC) is provided. In one embodiment, the system comprises a digital waveform generator that generates a digital sequence associated with a desired analog waveform and a pseudo-random noise component that provides a pulse shaped band limited pseudo-random noise sequence. The system further includes a combiner configured to combine the digital sequence and the pulse shaped band limited pseudo-random noise sequence and provide the combined sequence to the DAC.
摘要翻译：提供了一种用于提高数模转换器（DAC）的线性度的系统和方法。在一个实施例中，该系统包括数字波形发生器，该数字波形发生器产生与期望的模拟波形相关联的数字序列和提供脉冲形带限制的伪随机噪声序列的伪随机噪声分量。该系统还包括组合器，其被配置为组合数字序列和脉冲形带限制伪随机噪声序列，并将组合序列提供给DAC。

27. 发明授权

US06669353B2 Flashlight 失效
标题翻译：手电筒
公开(公告)号：US06669353B2
公开(公告)日：2003-12-30
申请号：US09973289
申请日：2001-10-05
申请人： Kenneth Kung
发明人： Kenneth Kung
IPC分类号： F21V2100
CPC分类号： F21V21/0965 , F21V21/06 , F21V21/0885
摘要： A flashlight and support assembly for supporting the position of a flashlight in a variety of different positions. The support assembly is interchangeable and may comprise a tripod, a belt clip, and/or a magnetic block. The user has the ability to alternate between the use of a tripod, magnetic block, or belt clip. By using these attachments, it is possible to sustain the position of a flashlight over long periods of time without having to readjust the flashlight and the flashlight can be held in many different positions in order to shine light where needed by the user thereof.
摘要翻译：手电筒和支撑组件，用于支持手电筒在各种不同位置的位置。支撑组件是可互换的并且可以包括三脚架，带夹和/或磁块。用户可以在使用三脚架，磁块或皮带夹之间切换。通过使用这些附件，可以长时间维持手电筒的位置，而不必重新调整手电筒，并且手电筒可以保持在许多不同的位置，以便在用户需要时照射光。

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