公开(公告)号：US4232239A

公开(公告)日：1980-11-04

申请号：US20909

申请日：1979-03-16

申请人： Lawrence N. Dworsky ,  Jeffery A. Whalin ,  Warren P. Glotzbach

发明人： Lawrence N. Dworsky ,  Jeffery A. Whalin ,  Warren P. Glotzbach

IPC分类号： H03H3/04 ,  H01L41/22

CPC分类号： H03H3/04 ,  Y10T29/42 ,  Y10T29/49004

摘要： A monolithic crystal filter formed by a multi-section piezoelectric resonator having anodizable electrodes is subjected to plasma from a low energy oxygen glow device to adjust the frequency response. The electrodes are selectively connected to potentials whereby the electrodes are individually anodized to increase the density thereof and change the frequency response of the resonator. The glow device includes anode and cathode rings separated by an insulator ring which holds a cathode screen across the cathode. The anode ring has a concave face and the inside diameter is generally the same as the diameter of the resonator so that the resonator can be placed close to the anode and plasma is localized on the resonator electrodes. The electrodes are connected in a frequency measuring circuit so that the response is monitored and the extent of anodization of the individual electrodes is controlled.

摘要翻译： 由具有阳极氧化电极的多段压电谐振器形成的单片晶体滤波器经受来自低能量氧发光装置的等离子体以调节频率响应。 电极被选择性地连接到电位，由此电极被单独阳极化以增加其密度并改变谐振器的频率响应。 辉光装置包括由绝缘体环隔开的阳极和阴极环，绝缘环保持阴极穿过阴极。 阳极环具有凹面，并且内径通常与谐振器的直径相同，使得谐振器可以放置在靠近阳极并且等离子体位于谐振器电极上。 电极连接在频率测量电路中，从而监测响应，并控制各个电极的阳极氧化程度。

公开(公告)号：US5761196A

公开(公告)日：1998-06-02

申请号：US339443

申请日：1994-11-14

申请人： Douglas I. Ayerst ,  Stephen R. Carsello ,  Warren P. Glotzbach

发明人： Douglas I. Ayerst ,  Stephen R. Carsello ,  Warren P. Glotzbach

IPC分类号： H04L27/30 ,  H04J13/16 ,  H04W16/02 ,  H04W16/12 ,  H04J13/02

CPC分类号： H04W16/12 ,  H04J13/16 ,  H04W16/02

摘要： A central controller (10) controls the operation of a code division multiple access (CDMA), spread spectrum communication system, which includes base stations (15) and portable transceivers (20) for communicating with the base stations (15). The central controller (10) stores a plurality of seeds, which are used by the portable transceivers (20) in generating pseudo-noise (PN) sequences, and, in response to requests from base stations (15), the central controller (10) distributes at least a portion of the assignable seeds to each of the requesting base stations (15). The base stations (15) that have received seeds from the central controller (10) subsequently transmit the seeds over the air to the portable transceivers (20) within their respective coverage areas. The portable transceivers (20) then utilize the seeds to generate spread spectrum signals for reception by a closest base station (15) having a coverage area in which they are located.

摘要翻译： 中央控制器（10）控制码分多址（CDMA）扩频通信系统的操作，其包括用于与基站（15）通信的基站（15）和便携式收发器（20）。 中央控制器（10）存储由便携式收发器（20）在产生伪噪声（PN）序列中使用的多个种子，并且响应于来自基站（15）的请求，中央控制器（10） ）将可分配种子的至少一部分分配给每个请求基站（15）。 已经从中央控制器（10）接收种子的基站（15）随后通过空气将种子发送到其各自覆盖区域内的便携式收发器（20）。 便携式收发器（20）然后利用种子来生成扩频信号，以由具有它们所在的覆盖区域的最近的基站（15）进行接收。

公开(公告)号：US5323418A

公开(公告)日：1994-06-21

申请号：US3720

申请日：1993-01-13

申请人： Douglas I. Ayerst ,  Stephen R. Carsello ,  Warren P. Glotzbach

发明人： Douglas I. Ayerst ,  Stephen R. Carsello ,  Warren P. Glotzbach

IPC分类号： H04B1/7107 ,  H04B7/26 ,  H04Q7/38 ,  H04L27/30

CPC分类号： H04B7/2628 ,  H04B1/71072

摘要： A base station for processing a received and stored spread spectrum signal determines the signal strengths of a first plurality of signals included in the stored spread spectrum signal. The strongest signal of the first plurality is subtracted from the stored signal such that the stored signal is replaced in the memory by a modified spread spectrum signal including a second plurality of signals. The base station determines signal strengths of the second plurality of signals, then subtracts the strongest of the second plurality from the modified spread spectrum signal.

摘要翻译： 用于处理接收和存储的扩展频谱信号的基站确定包含在所存储的扩频信号中的第一多个信号的信号强度。 从所存储的信号中减去第一多个信号中最强的信号，使得存储的信号在存储器中被包括第二多个信号的修改的扩频信号替换。 基站确定第二多个信号的信号强度，然后从修改的扩频信号中减去第二多个信号中最强的。

公开(公告)号：US5831636A

公开(公告)日：1998-11-03

申请号：US756466

申请日：1996-11-26

申请人： Zaffer S. Merchant ,  Warren P. Glotzbach ,  Surendra J. Perera

发明人： Zaffer S. Merchant ,  Warren P. Glotzbach ,  Surendra J. Perera

IPC分类号： H03M7/40 ,  G06F3/00 ,  G06F3/01 ,  G06K15/00 ,  G06T9/00 ,  G09G5/24 ,  H03M7/30 ,  G06F3/14

CPC分类号： G06F3/018 ,  G06K15/00 ,  G06T9/001 ,  G09G5/246 ,  G06K2215/0008

摘要： A compression/decompression method useful in communicating ideographic characters to communication devices. An ideographic character is represented by a compressed character codeword including information defining a structure type or layout of the character, together with primitive types that represent combinations of simple graphical elements. A character generator read-only memory (CGROM) (20) includes a compressed character codeword database (22) and a primitive type database (24). Character codes corresponding to a compressed character codeword are transmitted to a communication device (600), such as a selective call receiver. The communication device (600) includes a microprocessor/controller (50) that decompresses the compressed character codewords corresponding to the character codes based on the data stored in the character database (22) and the primitive type database (24).

摘要翻译： 用于将表意字符传送到通信设备的压缩/解压缩方法。 表意字符由包括定义字符的结构类型或布局的信息的压缩字符码字以及表示简单图形元素的组合的原始类型表示。 字符发生器只读存储器（CGROM）（20）包括压缩字符代码字数据库（22）和原语类型数据库（24）。 对应于压缩字符代码字的字符代码被传送到诸如选呼接收机之类的通信设备（600）。 通信设备（600）包括微处理器/控制器（50），其根据存储在字符数据库（22）和原语类型数据库（24）中的数据对与字符代码相对应的压缩字符码字进行解压缩。

公开(公告)号：US5343494A

公开(公告)日：1994-08-30

申请号：US4160

申请日：1993-01-13

申请人： Douglas I. Averst ,  Stephen R. Carsello ,  Warren P. Glotzbach

发明人： Douglas I. Averst ,  Stephen R. Carsello ,  Warren P. Glotzbach

IPC分类号： H04W68/10 ,  H04W88/18 ,  H04L9/00 ,  H04L27/30

CPC分类号： H04W88/185 ,  H04W68/10

摘要： A method for receiving and processing data in a portable transceiver (20) comprises the steps of receiving (320) at least one information signal and decoding (325) the at least one information signal to recover information included therein. The method further comprises the steps of generating (345) a pseudo-noise (PN) sequence in accordance with the information.

摘要翻译： 一种用于在便携式收发器（20）中接收和处理数据的方法包括以下步骤：接收（320）至少一个信息信号并解码（325）所述至少一个信息信号以恢复其中包括的信息。 该方法还包括根据该信息产生（345）伪噪声（PN）序列的步骤。

公开(公告)号：US5381447A

公开(公告)日：1995-01-10

申请号：US203204

申请日：1994-02-28

申请人： Douglas I. Ayerst ,  Stephen R. Carsello ,  Warren P. Glotzbach

发明人： Douglas I. Ayerst ,  Stephen R. Carsello ,  Warren P. Glotzbach

IPC分类号： H04B1/7107 ,  H04B7/26 ,  H04Q7/38 ,  H04L27/30

CPC分类号： H04B7/2628 ,  H04B1/71072

摘要： A base station (15) for receiving and processing a spread spectrum signal includes a memory (520) for storing the spread spectrum signal and a processor (525) coupled to the memory (520) for processing the spread spectrum signal to decode information included therein and for determining an information type. Timing circuitry (555, 560, 565) coupled to the memory (520) and the processor (525) generates a time value indicative of a reception time of the spread spectrum signal, wherein the time value is stored in the memory (520) when the information type is determined to correspond to a communication initiation signal.

摘要翻译： 用于接收和处理扩频信号的基站（15）包括用于存储扩展频谱信号的存储器（520）和耦合到存储器（520）的处理器（525），用于处理扩频信号以解码其中包含的信息 并且用于确定信息类型。 耦合到存储器（520）和处理器（525）的定时电路（555,560,565）产生指示扩频信号的接收时间的时间值，其中时间值被存储在存储器（520）中，当 信息类型被确定为对应于通信启动信号。