专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US4408619A Vibratory pneumatic tobacco feeder 失效
标题翻译：振动气动烟草喂料机
公开(公告)号：US4408619A
公开(公告)日：1983-10-11
申请号：US272817
申请日：1981-06-11
申请人： J. E. Steven Perkins
发明人： J. E. Steven Perkins
IPC分类号： A24C5/39 , A24C1/02
CPC分类号： A24C5/391
摘要： Tobacco feeder (10) consists of a conveyor belt (12), vibrating collecting pan (26), and control flaps (22a-b, 24a-b). Metering tube (16) delivers tobacco to conveyor belt (12), the speed of which varies depending on the number of cigarette making machines in operation. Conveyor belt (12) deposits tobacco on vibrating collecting pan (26) which has an inclined portion (28) to cause the tobacco flow to increase in velocity, thereby decreasing in density, as tobacco moves down the inclined portion (28). Control flaps (22a, 22b, 24a, 24b) direct the flow of tobacco to vacuum tubes (18a, 18b, 18c, 18d) depending on which cigarette makers are in operation.
摘要翻译：烟草进料器（10）由输送带（12），振动收集盘（26）和控制翼片（22a-b，24a-b）组成。计量管（16）将烟草输送到输送带（12），其速度根据操作中的卷烟机的数量而变化。输送带（12）将烟草沉积在具有倾斜部分（28）的振动聚集盘（26）上，以使烟草流速增加，从而当烟草沿着倾斜部分（28）向下移动时密度降低。控制翼片（22a，22b，24a，24b）根据哪个卷烟机正在操作，将烟草的烟流引导到真空管（18a，18b，18c，18d）。

2. 发明授权

US07133440B1 Acquisition of a synchronous CDMA TDD QPSK waveform using variable thresholds for PN and burst synchronization 有权
标题翻译：使用PN和突发同步的可变阈值获取同步CDMA TDD QPSK波形
公开(公告)号：US07133440B1
公开(公告)日：2006-11-07
申请号：US10280167
申请日：2002-10-25
申请人： Lyman D. Horne , Delon Jones , Samuel Kingston , Steven Perkins
发明人： Lyman D. Horne , Delon Jones , Samuel Kingston , Steven Perkins
IPC分类号： H04B1/69 , H04B7/216
CPC分类号： H04B1/707 , H04B1/7075 , H04B1/7087
摘要： A method and system for open-loop acquisition of a pseudo-noise (PN) encoded QPSK burst signal is provided. The method includes the steps of determining a PN correlation accumulation (PNCA) threshold and a sync threshold. Searching for a burst signal synchronization by searching a burst preamble for a sync word exceeding the sync threshold. In response to detecting the sync word, performing a PNCA of at least 256 bits following the detected sync word and comparing the PNCA of the at least 256 bits with the PNCA threshold. The comparison further includes the step of verifying that the PNCA of the 256 bits following the detected sync word exceeds the PNCA threshold and then verifying sync word detection. Next, using the burst preamble an estimate of carrier signal frequency is determined; and using a subsequent burst preamble carrier signal frequency and carrier signal phase is determined.
摘要翻译：提供了一种用于开环获取伪噪声（PN）编码的QPSK突发信号的方法和系统。该方法包括确定PN相关累积（PNCA）阈值和同步阈值的步骤。通过搜索突发前导码来搜索超过同步阈值的同步字搜索突发信号同步。响应于检测到同步字，在检测到的同步字之后执行至少256位的PNCA，并将至少256位的PNCA与PNCA阈值进行比较。比较还包括验证检测到的同步字之后的256位的PNCA超过PNCA阈值，然后验证同步字检测的步骤。接下来，使用脉冲串前导码确定载波信号频率的估计; 并且确定使用随后的突发前同步码载波信号频率和载波信号相位。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式