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

US6000415A Method and apparatus for positioning a restrictor shield of a pump in response to an electric signal 失效
标题翻译：响应于电信号定位泵的限流器屏蔽的方法和装置
公开(公告)号：US6000415A
公开(公告)日：1999-12-14
申请号：US855827
申请日：1997-05-12
申请人： David Datong Huo , Bret W. Adams , John Jarvis
发明人： David Datong Huo , Bret W. Adams , John Jarvis
IPC分类号： F04B37/16 , F04B37/08 , F16K51/00 , H01L21/00
CPC分类号： F16K51/00 , F04B37/08 , F04B2205/08 , Y10T137/0318
摘要： Apparatus, positioned at an inlet port to a pump, for shielding the pump from a process chamber of a semiconductor wafer processing system, where the apparatus has a controllably variable effective throughput area, and method for electrically controlling the size of the effective throughput area. Specifically, the apparatus is a controllable restrictor shield supported by an actuator, having a first effective throughput area and a second effective throughput area, where the first effective throughput area is typically less than the second effective throughput area. The size of the effective throughput area is directly responsive to an electric signal that controls the actuator.
摘要翻译：装置，位于泵的入口处，用于将泵从半导体晶片处理系统的处理室屏蔽，其中该装置具有可控制的有效吞吐量面积，以及用于电控制有效吞吐量区域的尺寸的方法。具体地，该装置是由致动器支撑的可控制的限制器屏蔽物，其具有第一有效吞吐量区域和第二有效吞吐量区域，其中第一有效吞吐量区域通常小于第二有效吞吐量区域。有效吞吐量区域的大小直接响应于控制致动器的电信号。

2. 发明授权

US5822694A Method and apparatus for providing communication services to a communication unit based on registration type 失效
标题翻译：基于注册类型向通信单元提供通信服务的方法和装置
公开(公告)号：US5822694A
公开(公告)日：1998-10-13
申请号：US912835
申请日：1997-08-19
申请人： Daniel J. Coombes , Jay R. Krebs
发明人： Daniel J. Coombes , Jay R. Krebs
IPC分类号： H04W60/04 , H04W68/04 , H04W84/08 , H04M11/00 , H04B1/00
CPC分类号： H04W68/04 , H04W60/04 , H04W84/08
摘要： A communication system (100) that includes a plurality of communication units (101-108) and infrastructure equipment (110-115, 140, 141) employs a method and apparatus for providing communication services to a communication unit (e.g., 101). The infrastructure equipment includes a plurality of base sites (110-115) that provide communication services to corresponding service coverage areas (120-125). The service coverage areas (120-125) are further arranged into paging location areas (130-132). When the communication unit (101) becomes active in the system (100), the communication unit (101) determines its registration type. When the communication unit (101) is of a first registration type, the communication unit (101) transmits a registration message to the infrastructure equipment (e.g., 141) whenever the unit (101) enters a new location area (130-132). When the communication unit (101) is of a second registration type, the communication unit (101) transmits the registration message to the infrastructure equipment (141) whenever the unit (101) enters a new service coverage area (120-125). Thus, when the infrastructure equipment (141) receives a communication destined for the communication unit (101), the infrastructure equipment (141) conveys the communication to the communication unit (101) based on the unit's registration type. However when the communication unit is of a first registration type corresponding to the first registration process, in which the infrastructure pages the communication unit prior to conveying a communication to the unit, and the location area containing the communication unit consists of a "single service coverage area" communication is conveyed directly to the communication unit without first paging the unit.
摘要翻译：包括多个通信单元（101-108）和基础设施设备（110-115,140,141）的通信系统（100）采用向通信单元（例如101）提供通信服务的方法和装置。基础设施设备包括向对应的服务覆盖区域（120-125）提供通信服务的多个基站（110-115）。服务覆盖区域（120-125）还被布置成寻呼位置区域（130-132）。当通信单元（101）在系统（100）中变为活动时，通信单元（101）确定其注册类型。当通信单元（101）具有第一注册类型时，无论何时单元（101）进入新的位置区域（130-132），通信单元（101）向基础设施设备（例如141）发送注册消息。当通信单元（101）具有第二注册类型时，无论何时单元（101）进入新的服务覆盖区域（120-125），通信单元（101）将登记消息发送到基础设施设备（141）。因此，当基础设施设备（141）接收到通信单元（101）的通信时，基础设施（141）基于单元的注册类型将通信传送到通信单元（101）。然而，当通信单元是对应于第一注册过程的第一注册类型，其中基础设施在通信单元向单元传送通信之前将通信单元进行页面化，并且包含通信单元的位置区域由“单个服务覆盖区域“通信直接传送到通信单元，而无需首先寻呼单元。

3. 发明授权

US5894592A Wideband frequency synthesizer for direct conversion transceiver 失效
标题翻译：宽带频率合成器，用于直接转换收发器
公开(公告)号：US5894592A
公开(公告)日：1999-04-13
申请号：US839290
申请日：1997-04-17
申请人： Daniel E. Brueske , Gary A. Kurtzman , Richard B. Meador
发明人： Daniel E. Brueske , Gary A. Kurtzman , Richard B. Meador
IPC分类号： H03C3/09 , H04B1/40 , H03C3/00 , H03C3/06 , H04B1/16
CPC分类号： H03C3/0975 , H03C3/0941 , H03C3/0966 , H04B1/005 , H04B1/0057 , H04B1/0092 , H04B1/40
摘要： A wideband phase-lock loop frequency synthesizer (200) used in a radio transceiver capable of being reconfigured to operate in either a transmit, receive, or battery save mode. The wideband phase-lock loop frequency synthesizer (200) includes, a divide-by-two divider (205), quadrature detector (204), offset VCO (209) and offset mixer (207) for generating a quadrature phase modulated signal. Moreover, a programmable filter (211) is used for removing predetermined harmonic components of the offset mixed signal enabling the synthesizer to operate over a wide frequency range.
摘要翻译：一种用于无线电收发机的宽带锁相环频率合成器（200），能够被重新配置为在发射，接收或电池节省模式下工作。宽带锁相环频率合成器（200）包括用于产生正交相位调制信号的除以二分频器（205），正交检波器（204），偏移VCO（209）和偏移混频器（207）。此外，可编程滤波器（211）用于去除偏移混合信号的预定谐波分量，使合成器能够在宽的频率范围内工作。

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