公开(公告)号：US07023867B1

公开(公告)日：2006-04-04

申请号：US09546976

申请日：2000-04-11

申请人： Joon Suk Park ,  Charles Arnold Lasswell ,  Paul K. Lee ,  Gregory J. Schultz ,  Ronald Craig Fish

发明人： Joon Suk Park ,  Charles Arnold Lasswell ,  Paul K. Lee ,  Gregory J. Schultz ,  Ronald Craig Fish

IPC分类号： H04L12/28 ,  H04L12/56

CPC分类号： H04M3/42314 ,  H04M7/006

摘要： A PBX system using an unmodified personal computer as the host server and using expansion slots to couple one or more switch cards to the system bus, and, optionally including a network interface card to couple the PBX system to other client computers running telephony enabled applications to control the PBX via a local area network. The switch card(s) are each coupled to a chain of one or more port expansion units that do not consume expansion slots. Each PEU contains a DSP and a microcontroller, an FPGA and port interface circuitry to interface to POTS CO lines, extension telephone lines, T1 lines or PRI lines. The personal computer is programmed with a PBX process that controls operations of the overall system and may also be programmed with conventional voice mail applications or integrated voice response and other applications to implement various telephony functions such as recording voice mail or prompt callers to input DTMF tones indicating what they want to do. Each chain of PEUs is coupled to the switch card and the PBX process by a TDMA bus and a packet switched bus. Distributed processing by the DSPs and microcontrollers in the PEUs to do tone generation, tone recognition, and a host of other functions offloads much of the work from the host. The packet switched bus enables easy handling of packetized data in IP packets or other packetized data.

摘要翻译： 使用未修改的个人计算机作为主机服务器并且使用扩展槽将一个或多个交换卡耦合到系统总线的PBX系统，以及可选地包括网络接口卡以将PBX系统耦合到运行启用电话的应用程序的其他客户端计算机 通过局域网控制集团电话。 开关卡每个都连接到不消耗扩展槽的一个或多个端口扩展单元的链路。 每个PEU包含一个DSP和一个微控制器，一个FPGA和端口接口电路，用于连接POTS CO线，分机电话线，T1线或PRI线。 个人计算机使用PBX进程来编程，该过程控制整个系统的操作，并且还可以用传统的语音邮件应用程序或集成语音响应和其他应用程序进行编程，以实现各种电话功能，例如录制语音邮件或提示呼叫者输入DTMF音 表明他们想做什么 每个PEU链通过TDMA总线和分组交换总线耦合到交换机卡和PBX进程。 分布式处理由DSP和微控制器在PEU中进行音调生成，音调识别和一系列其他功能，从主机卸载大部分工作。 分组交换总线使得能够容易地处理IP分组或其他分组数据中的分组化数据。

公开(公告)号：US07529253B2

公开(公告)日：2009-05-05

申请号：US10931617

申请日：2004-09-01

申请人： Paul K. Lee ,  Charles Arnold Lasswell ,  Gregory J. Schultz

发明人： Paul K. Lee ,  Charles Arnold Lasswell ,  Gregory J. Schultz

IPC分类号： H04L12/28

CPC分类号： H04M3/42314 ,  H04M7/006

摘要： A personal computer includes a PBX control program and one or more switch cards located in expansion board slots. The one or more switch cards are coupled to one or more port expansion units (PEU), which are coupled to telecommunication lines out to the various extension phones at the customer premises. Each PEU contains its own digital signal processor (DSP) so that distributed digital signal processing may be implemented to avoid any bottlenecks. One master PEU is coupled to a switch card by a time division multiplexed (TDMA) bus as well as a packet switched control bus, and all the other PEUs, if any, are coupled to the master PEU by extensions of the TDMA and packet switched buses. The TDMA bus carries PBX real time conversations while the packet switched bus carries control information, voicemail outbound message data packets, and inbound voicemail data packets.

摘要翻译： 个人计算机包括一个PBX控制程序和位于扩展板插槽中的一个或多个交换机卡。 一个或多个开关卡耦合到一个或多个端口扩展单元（PEU），该端口扩展单元（PEU）在电话线路处连接到客户驻地处的各种分机电话。 每个PEU都包含自己的数字信号处理器（DSP），从而可以实现分布式数字信号处理，以避免任何瓶颈。 一个主PEU通过时分多路复用（TDMA）总线以及分组交换控制总线耦合到交换机卡，并且所有其他PEU（如果有的话）通过TDMA和分组交换的扩展耦合到主PEU 巴士 TDMA总线承载PBX实时对话，而分组交换总线承载控制信息，语音邮件出站消息数据分组和入站语音邮件数据分组。

公开(公告)号：US06795448B1

公开(公告)日：2004-09-21

申请号：US09517231

申请日：2000-03-02

申请人： Paul K. Lee ,  Charles Arnold Lasswell ,  Gregory J. Schultz

发明人： Paul K. Lee ,  Charles Arnold Lasswell ,  Gregory J. Schultz

IPC分类号： H04L1228

CPC分类号： H04M3/42314 ,  H04M7/006

摘要： A PBX system using an unmodified personal computer as the host server and using expansion slots to couple one or more switch cards to the system bus, and, optionally including a network interface card to couple the PBX system to other client computers running telephony enabled applications to control the PBX via a local area network. The switch card(s) are each coupled to a chain of one or more port expansion units that do not consume expansion slots. Each PEU contains a DSP and a microcontroller, an FPGA and port interface circuitry to interface to POTS CO lines, extension telephone lines, T1 lines or PRI lines. The personal computer is programmed with a PBX process that controls operations of the overall system and may also be programmed with conventional voice mail applications or integrated voice response and other applications to implement various telephony functions such as recording voice mail or prompt callers to input DTMF tones indicating what they want to do. Each chain of PEUs is coupled to the switch card and the PBX process by a TDMA bus and a packet switched bus. Distributed processing by the DSPs and microcontrollers in the PEUs to do tone generation, tone recognition, and a host of other functions offloads much of the work from the host. The packet switched bus enables easy handling of packetized data in IP packets or other packetized data.

摘要翻译： 使用未修改的个人计算机作为主机服务器并且使用扩展槽将一个或多个交换卡耦合到系统总线的PBX系统，以及可选地包括网络接口卡以将PBX系统耦合到运行启用电话的应用程序的其他客户端计算机 通过局域网控制集团电话。 开关卡每个都连接到不消耗扩展槽的一个或多个端口扩展单元的链路。 每个PEU包含一个DSP和一个微控制器，一个FPGA和端口接口电路，用于连接POTS CO线，分机电话线，T1线或PRI线。 个人计算机使用PBX进程来编程，该过程控制整个系统的操作，并且还可以用传统的语音邮件应用程序或集成语音响应和其他应用程序进行编程，以实现各种电话功能，例如录制语音邮件或提示呼叫者输入DTMF音 表明他们想做什么 每个PEU链通过TDMA总线和分组交换总线耦合到交换机卡和PBX进程。 分布式处理由DSP和微控制器在PEU中进行音调生成，音调识别和一系列其他功能，从主机卸载大部分工作。 分组交换总线使得能够容易地处理IP分组或其他分组数据中的分组化数据。

公开(公告)号：US06584140B1

公开(公告)日：2003-06-24

申请号：US09235988

申请日：1999-01-22

申请人： Paul K. Lee

发明人： Paul K. Lee

IPC分类号： H04B169

CPC分类号： H04L1/0057 ,  H04B1/7143 ,  H04B1/7156 ,  H04L1/006 ,  H04L1/0065 ,  H04L1/0071 ,  H04L27/32

摘要： A system for increasing data transmission capacity over a wireless mobile link while at the same time providing improved jamming resistance utilizes discrete trellis-coded modulation involving frequency hopping individual symbols, along with encoding the phase of a symbol as a frequency offset to the hopped carrier frequency. This modulation system permits coherent demodulation in which both phase and amplitude of a symbol is robustly decoded and in which each phase of a quadrature amplitude modulated signal is decoded by the detected frequency offset, thus to provide reliable recovery of phase in the demodulation section. The resulting system improves spectrum efficiency and permits fast frequency hopping for improved jamming resistance, with the utilization of frequency offset coding permitting the coherent demodulation that improves the error-rate without the introduction of additional reference bits.

摘要翻译： 一种用于通过无线移动链路增加数据传输容量的系统，同时提供改善的抗干扰性利用涉及跳频个别符号的离散网格编码调制，以及将符号的相位编码为跳频载波频率的频率偏移 。 该调制系统允许相关解调，其中符号的相位和幅度都被鲁棒地解码，并且其中正交幅度调制信号的每个相位被检测到的频率偏移解码，从而提供解调部分中的相位的可靠恢复。 所产生的系统提高频谱效率并允许快速跳频以改善干扰电阻，利用频率偏移编码允许在不引入附加参考比特的情况下提高误码率的相干解调。

公开(公告)号：US5396622A

公开(公告)日：1995-03-07

申请号：US813246

申请日：1991-12-23

申请人： Paul K. Lee ,  Zvi Y. Yehudai

发明人： Paul K. Lee ,  Zvi Y. Yehudai

IPC分类号： G06F7/24 ,  G05F7/08

CPC分类号： G06F7/24 ,  Y10S707/99937

摘要： In a recursive distributive sort of records according to their key fields, a method for distributing keys to form one or more subgroups and collecting them to preserve or maintain an order among the subgroups. The distribution is accomplished by comparing each key field against an extrinsic attribute and then assigning the key to a subgroup or bucket. The collection sequence preserves the overall key field order. A Dynamic Branching Table (DBT) for governing the ordering of buckets during the collection phase is initially populated with NO-OP instructions. During the distribution phase, a CALL instruction replaces the NO-OP in the sorted order DBT position upon the first occurrence of a distinguishable character in the key character sequence being scanned. An address pointer, pointing to the corresponding bucket, is then inserted in a Bucket Pointer Table (BPT) indexed to the DBT. During the collection phase, the DBT is executed and the empty buckets are skipped by NO-OP execution, while the populated buckets are processed by subroutine CALL execution.

摘要翻译： 在根据其关键字段的递归分布式记录中，分配密钥以形成一个或多个子组并收集它们以在子组之间保留或维护订单的方法。 通过将每个密钥字段与外部属性进行比较，然后将密钥分配给子组或存储桶来实现分发。 收集顺序保留整体密钥字段顺序。 用于在收集阶段管理桶的排序的动态分支表（DBT）最初用NO-OP指令填充。 在分发阶段，在被扫描的键字符序列中首次出现可区分字符时，CALL指令将替换排序顺序DBT位置中的NO-OP。 指向相应桶的地址指针然后被插入到索引到DBT的桶指针表（BPT）中。 在收集阶段，执行DBT，并且通过NO-OP执行跳过空桶，而通过子程序CALL执行来处理填充的桶。