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1. 发明授权

US06714587B1 Transmission system with improved signal conditioning means 失效
标题翻译：具有改进信号调理装置的传输系统
公开(公告)号：US06714587B1
公开(公告)日：2004-03-30
申请号：US09395012
申请日：1999-09-13
申请人： Wilhelmus J. Van Houtum , Henry L. Vermeer
发明人： Wilhelmus J. Van Houtum , Henry L. Vermeer
IPC分类号： H04B138
CPC分类号： H04L25/03038 , H04L25/03159 , H04L25/03343 , H04L2025/03375 , H04L2025/03477 , H04L2025/03522 , H04L2025/03617 , H04L2025/03668
摘要： In a transmission system a signal is transmitted by a primary station to a secondary station via a transmission medium. The secondary station comprises a tunable receiver for tuning to a signal received from the transmission medium. The receiver also comprises a signal conditioning unit such as an equalizer with a channel estimation unit for determining at least one property of the transmission channel. The determined property is used for setting the signal conditioning unit at a later instant. This instant can be at the change of frequency where the setting for the signal conditioning unit for the new frequency are calculated from the determined property. The property can be stored for later use when the receiver returns to the previous frequency. The determined property can be used for determining the setting of another signal conditioning unit which comprises a pre-equalizer used with transmitter in the secondary station.
摘要翻译：在传输系统中，信号由主站通过传输介质传输到次站。次站包括用于调谐到从传输介质接收的信号的可调谐接收器。接收机还包括信号调节单元，例如具有信道估计单元的均衡器，用于确定传输信道的至少一个性质。确定的属性用于稍后设置信号调节单元。该瞬间可以是频率的变化，其中根据确定的属性计算用于新频率的信号调节单元的设置。当接收机返回到上一个频率时，该属性可以存储以供以后使用。确定的属性可以用于确定另一信号调节单元的设置，该信号调节单元包括与次站中的发射机一起使用的预均衡器。

2. 发明授权

US06765628B1 Method and apparatus for searching channels 失效
标题翻译：搜索频道的方法和装置
公开(公告)号：US06765628B1
公开(公告)日：2004-07-20
申请号：US09601855
申请日：2000-08-09
申请人： Wilhelmus J. Van Houtum , Peter J. H. Rutten
发明人： Wilhelmus J. Van Houtum , Peter J. H. Rutten
IPC分类号： H04N550
CPC分类号： H04N21/4345 , H04N5/50 , H04N21/42692 , H04N21/4383 , H04N21/4586 , H04N21/6143
摘要： A method for searching a predetermined satellite channel by making use of information available from the satellite. The method comprises three steps. The first step is searching for a service channel from the satellite, if found than the user look up table is updated with this information. A second step is updating the user look up table by using the receiver look up table, which is implemented in the satellite receiver. The third step is the conventionally search through the entire band till the predetermined channel is found.
摘要翻译：一种通过利用从卫星获得的信息来搜索预定卫星信道的方法。该方法包括三个步骤。第一步是从卫星搜索服务通道，如果发现用户查询表中的信息被更新。第二步是通过使用在卫星接收机中实现的接收机查找表来更新用户查询表。第三步是通过整个频带的常规搜索，直到找到预定的频道。

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