公开(公告)号：US5737687A

公开(公告)日：1998-04-07

申请号：US398619

申请日：1995-03-01

申请人： Christopher B. Martin ,  Richard K. Kornfeld ,  Sherman Gregory

发明人： Christopher B. Martin ,  Richard K. Kornfeld ,  Sherman Gregory

IPC分类号： H04B1/06 ,  H04B1/38 ,  H04B7/00 ,  H04B7/005 ,  H04B3/36

CPC分类号： H04W52/52 ,  H04B1/3877

摘要： A transceiver system for interfacing digital modems with radio frequency signals including an antenna, an antenna interface system and a modem interface system separated by a cable. The antenna is placed in a location having optimal reception and in close proximity to the antenna interface system. The cable couples the antenna interface system to the modem interface system. The modem interface system includes a two state variable attenuator and an attenuation register that are configured to either reduce the strength of the receive (Rx) signal when the modems are located near a base station, or to transmit the Rx signal without attenuation when the concentrated subscriber unit is at a more distant location. The outgoing, or transmit (Tx), signal is also attenuated in a similar manner to the incoming signal. A signal loss detection system includes a detector located in the modem interface system that receives an oscillating signal transmitted from the antenna interface system through the coaxial cable. A differentiating integrator then determines the amount of signal loss experienced by this oscillating signal during transmission through the coaxial cable and attenuates the signal from the antenna interface system accordingly so the amount of loss experienced remains constant. DC power is transmitted from the modem interface system to the antenna interface system through the coaxial cable. A maximum power limiting system detects when the signal being generated exceeds the capacity of the transmit power amplifier and transmits an alarm signal to the modem interface system.

摘要翻译： 用于将数字调制解调器与包括由电缆隔开的天线，天线接口系统和调制解调器接口系统的射频信号进行接口的收发机系统。 将天线放置在具有最佳接收并且靠近天线接口系统的位置。 电缆将天线接口系统耦合到调制解调器接口系统。 调制解调器接口系统包括两个状态可变衰减器和一个衰减寄存器，其被配置为当调制解调器位于基站附近时降低接收（Rx）信号的强度，或者当集中 用户单元处于更远的位置。 输出或发送（Tx）信号也以与输入信号相似的方式衰减。 信号丢失检测系统包括位于调制解调器接口系统中的检测器，其接收通过同轴电缆从天线接口系统发送的振荡信号。 然后，微分积分器确定在通过同轴电缆传输期间该振荡信号所经历的信号损耗的量，并相应地衰减来自天线接口系统的信号，因此所经历的损耗量保持恒定。 直流电源通过同轴电缆从调制解调器接口系统传输到天线接口系统。 最大功率限制系统检测何时产生的信号超过发射功率放大器的容量，并向调制解调器接口系统发送报警信号。

公开(公告)号：US07498156B2

公开(公告)日：2009-03-03

申请号：US11154503

申请日：2005-06-15

申请人： Raymond P. Goodrich ,  Matthew S. Platz ,  Christopher B. Martin

发明人： Raymond P. Goodrich ,  Matthew S. Platz ,  Christopher B. Martin

IPC分类号： C12N13/00 ,  A61K35/14 ,  A61K31/525

CPC分类号： A61K41/0019 ,  A61K31/50 ,  A61L2/0011 ,  A61L2/0082 ,  A61M1/3683

摘要： This invention is directed towards a method of using visible light at wavelengths of at least 500 nm and above in combination with a sensitizer having a flavin moiety to reduce any pathogens that may be contained in blood and blood components. By exposing the blood and blood components to light of 500 nm and higher, only the sensitizer that is bound to nucleic acids of the pathogens will be activated, thus destroying the sensitizer-pathogenic nucleic acid complex. Because unbound sensitizer is not activated at this wavelength, damage to blood and blood components caused by photolysis of unbound sensitizer may be avoided.

摘要翻译： 本发明涉及使用波长为500nm以上的可见光与具有黄素部分的敏化剂组合以减少血液和血液成分中可能含有的任何病原体的方法。 通过将血液和血液成分暴露于500nm以上的光，只有与病原体的核酸结合的敏化剂才能被活化，从而破坏致敏致病核酸复合物。 因为未激活敏感剂在这个波长下，可能会避免由未结合的敏化剂的光解造成的血液和血液成分的损害。