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

US5252963A "Selective call receiver" 失效
标题翻译： “选择性呼叫接收机”
公开(公告)号：US5252963A
公开(公告)日：1993-10-12
申请号：US851113
申请日：1992-03-16
申请人： Gregory O. Snowden , Michael J. DeLuca , Morris A. Moore , Robert J. Schwendeman , David F. Willard
发明人： Gregory O. Snowden , Michael J. DeLuca , Morris A. Moore , Robert J. Schwendeman , David F. Willard
IPC分类号： H04B1/16 , H04W52/02 , H04W88/02 , H04B5/04 , H04Q7/00 , G08B5/22
CPC分类号： H04W52/0283 , H04B1/1615 , H04W88/022
摘要： In a battery powered selective call receiver receiving a synchronous signal, a battery saving method extends battery life by optimizing the amount of time the receiver circuit is activated when searching for the signal after previously acquiring synchronization. The battery saving method allows for turning the selective call receiver on without activating the receiver circuit. The receiver circuit is activated at a time later than the energization of the selective call receiver, where the time of activation of the receiver circuit is determined in response to the time passed since synchronization was last acquired and the system signal stability.
摘要翻译：在接收同步信号的电池供电选择呼叫接收机中，电池节省方法通过在先前获取同步之后搜索信号时优化接收机电路被激活的时间量来延长电池寿命。电池节省方法允许在不启动接收器电路的情况下打开选呼接收器。接收机电路在比选择呼叫接收机的通电一段时间被激活，其中接收机电路的激活时间响应于最后获取同步所经过的时间和系统信号的稳定性来确定。

2. 发明授权

US5206855A Multiple frequency message system 失效
标题翻译：多频消息系统
公开(公告)号：US5206855A
公开(公告)日：1993-04-27
申请号：US505860
申请日：1990-04-06
申请人： Robert J. Schwendeman , David F. Willard
发明人： Robert J. Schwendeman , David F. Willard
IPC分类号： H04W88/18
CPC分类号： H04W88/187
摘要： A transmitter system for transmitting coded message signals on a plurality of channels of which at least one channel to be assigned to each of a plurality of geographical areas. The coded message signals include channel identification information and message information being transmitted in a sequence of coded transmission slots on each of the plurality of channels. The sequence of coded transmission slots are transmitted offset in time such that a particular transmission slot is not substantially simultaneously transmitted on any of the plurality of channels.A receiver capable of receiving the coded message signals during a predetermined coded transmission slot being transmitted on the plurality of channels is also described. The receiver includes a channel selecting circuit responsive to detecting the predetermined channel identification information transmitted during the predetermined coded transmission slot on the predetermined channel, for maintaining reception during the predetermined transmission slot on the predetermined channel. The receiver also includes a memory for storing active channel information for a given geographic area, and the channel selecting circuit is responsive to the active channel information for selecting the reception of only the active channels in the particular geographical area when the channel identification information detected during the predetermined coded transmission slot on the predetermined channel does not match predetermined channel identification information.
摘要翻译：一种用于在多个信道上发送编码消息信号的发射机系统，其中至少一个信道被分配给多个地理区域中的每一个。编码消息信号包括以多个信道中的每个信道的编码传输时隙序列发送的信道标识信息和消息信息。编码的传输时隙的序列在时间上传输偏移，使得在多个信道中的任一个上基本上不同时发送特定的传输时隙。还描述了能够在多个信道上发送的预定编码传输时隙期间接收编码消息信号的接收机。该接收机包括一个频道选择电路，响应于检测在预定频道上的预定编码传输时隙期间发送的预定频道识别信息，用于在预定频道上的预定传输时隙内保持接收。接收机还包括用于存储给定地理区域的活动信道信息的存储器，并且当在此期间检测到信道识别信息时，信道选择电路响应于活动信道信息用于仅选择特定地理区域中的活动信道的接收预定信道上的预定编码传输时隙与预定信道识别信息不匹配。

3. 发明授权

US5168493A Time division multiplexed selective call system 失效
标题翻译：时分复用选呼系统
公开(公告)号：US5168493A
公开(公告)日：1992-12-01
申请号：US793230
申请日：1991-11-08
申请人： Leonard E. Nelson , Robert J. Schwendeman , Michael J. DeLuca , David F. Willard , Jerry L. A. Sandvos , William V. Braun
发明人： Leonard E. Nelson , Robert J. Schwendeman , Michael J. DeLuca , David F. Willard , Jerry L. A. Sandvos , William V. Braun
IPC分类号： H04L7/00 , H04W8/24 , H04W88/02 , H04W88/18
CPC分类号： H04W88/187 , H04W8/245 , H04W88/022
摘要： A signalling protocol comprising a plurality of interleaved phases is transmitted at various baud rates, the various baud rates being multiples of a base baud rate. The signalling protocol allows a selective call receiver to decode at an operating baud rate equivalent to the base baud rate irrespective of the transmission baud rate by decoding only a portion of the transmitted signal, the portion decoded determined by the baud rate and the address of the selective call receiver.
摘要翻译：包括多个交错相位的信号协议以各种波特率传输，各种波特率是基波特率的倍数。信令协议允许选择呼叫接收机以与基本波特率相等的操作波特率来解码，而不管传输波特率如何，仅通过解码发送信号的一部分，由波特率确定的部分和选呼接收机。

4. 发明授权

US5600312A Messaging system and method having roaming capability and controlled group messaging 失效
标题翻译：消息传递系统和方法具有漫游能力和受控组消息
公开(公告)号：US5600312A
公开(公告)日：1997-02-04
申请号：US401317
申请日：1995-03-09
申请人： David F. Willard , Robert J. Schwendeman , Eric T. Eaton , Barbara D. Laflin
发明人： David F. Willard , Robert J. Schwendeman , Eric T. Eaton , Barbara D. Laflin
IPC分类号： H04W84/02 , H04Q7/18
CPC分类号： H04W84/022
摘要： A messaging system and method capable of transmitting group messages throughout a Network (200) such that receivers which are outside of a "local" or "home" area of coverage receive such group messages, whereas receivers which are in a "local" area of coverage over ride and do not receive the group message as a result of decoding system identifiers and ignoring those messages having network roaming identification.
摘要翻译：一种能够在整个网络（200）中发送组消息的消息系统和方法，使得在覆盖区域的“本地”或“归属”区域之外的接收者接收到这样的组消息，而位于“ 由于解码系统标识符并忽略了具有网络漫游识别的消息，覆盖范围不能接收组消息。

5. 发明授权

US5051993A Mixed modulation level communication system 失效
标题翻译：混合调制级通信系统
公开(公告)号：US5051993A
公开(公告)日：1991-09-24
申请号：US330837
申请日：1989-03-30
申请人： Michael J. DeLuca , David F. Willard , Robert J. Schwendeman
发明人： Michael J. DeLuca , David F. Willard , Robert J. Schwendeman
IPC分类号： H04J1/00 , H04B1/16 , H04B7/26 , H04J3/04 , H04J99/00 , H04L5/04 , H04Q7/06
CPC分类号： H04L5/04 , H04J15/00
摘要： A communication system has an information signal having a plurality of data streams. The data streams are simultaneously modulated on a multi-level symbol transmission. The data streams may have either independent or dependent signalling protocols. A transmitting device generates the information in one of several embodiments. A first receiver receives the information signal and process only a first data stream for messages. A second receiver receives the information signal and process only the second data stream for meassages. A third receiver is capable of selectively receiving and processing a plurality of data streams. The third receiver is shown in several embodiments for selecting the data streams.
摘要翻译：通信系统具有具有多个数据流的信息信号。在多电平符号传输上同时调制数据流。数据流可以具有独立或依赖的信令协议。发送设备在几个实施例之一中生成信息。第一接收器接收信息信号并仅处理消息的第一数据流。第二接收器接收信息信号并仅处理第二数据流以进行误警。第三接收机能够选择性地接收和处理多个数据流。在用于选择数据流的几个实施例中示出了第三接收机。

6. 发明授权

US5555183A Method and apparatus for synchronizing to a synchronous selective call signal 失效
标题翻译：用于同步到同步选择呼叫信号的方法和装置
公开(公告)号：US5555183A
公开(公告)日：1996-09-10
申请号：US191881
申请日：1994-02-03
申请人： David F. Willard , Robert J. Schwendeman , William J. Kuznicki , Michael J. DeLuca
发明人： David F. Willard , Robert J. Schwendeman , William J. Kuznicki , Michael J. DeLuca
IPC分类号： H04W88/02 , H04Q7/18 , H04Q7/06
CPC分类号： H04W88/026
摘要： A selective call receiver (111) receives a synchronous selective call signal (99) having synchronization portions (102 and 104) and a frame identification portion (106). Upon finding the signal the selective call receiver's bit and frame synchronizers (126 and 128) synchronize to a frame (100) of the signal and a frame ID decoder (130) decodes the frame ID (106). A comparator (136) compares the received frame ID (106) with an ID (142) assigned to the receiver, and optionally a first and second mask (134A and 134B) to determine the number of frames until an occurrence of a desired frame and conserves power until the occurrence of the desired frame (188).
摘要翻译：选呼接收机（111）接收具有同步部分（102和104）和帧识别部分（106）的同步选择呼叫信号（99）。在寻找信号时，选呼接收机的位和帧同步器（126和128）与信号的帧（100）同步，并且帧ID解码器（130）解码帧ID（106）。比较器（136）将接收到的帧ID（106）与分配给接收机的ID（142）以及可选地第一和第二掩码（134A和134B）进行比较，以确定帧的数量，直到发生所需的帧，节省功率，直到发生所需的帧（188）。

7. 发明授权

US5371737A Selective call receiver for receiving a multiphase multiplexed signal 失效
标题翻译：用于接收多相复用信号的选择性呼叫接收机
公开(公告)号：US5371737A
公开(公告)日：1994-12-06
申请号：US174577
申请日：1993-12-28
申请人： Leonard E. Nelson , Robert J. Schwendeman , Michael J. DeLuca , David F. Willard , Jerry L. A. Sandvos , William V. Braun
发明人： Leonard E. Nelson , Robert J. Schwendeman , Michael J. DeLuca , David F. Willard , Jerry L. A. Sandvos , William V. Braun
IPC分类号： H04L7/00 , H04W8/24 , H04W88/02 , H04W88/18 , H04Q7/00 , H04J3/22
CPC分类号： H04W88/187 , H04W8/245 , H04W88/022
摘要： A selective call receiver receives a signal having a baud rate and comprising a number of phases. The number of phases are time division multiplexed to form the signal. The selective call receiver has selective call address information assigned thereto and includes a receiver for receiving and demodulating the signal and a memory for storing predetermined information. A demultiplexer is coupled to the receiver and the memory for demultiplexing the signal to recover one of the number of phases in response to the predetermined information and the baud rate. The selective call receiver also includes a decoder coupled to the demultiplexing means for decoding said one of said number of phases of said signal to derive a selective call message therefrom.
摘要翻译：选呼接收机接收具有波特率并包括多个相位的信号。相位数被时分复用形成信号。选呼接收机具有分配给其的选择性呼叫地址信息，并且包括用于接收和解调信号的接收机和用于存储预定信息的存储器。解复用器耦合到接收器和存储器，用于对信号进行解复用以响应于预定信息和波特率来恢复多个相位中的一个。选呼接收机还包括耦合到解复用装置的解码器，用于解码所述信号的所述多个相位中的所述一个相位，从而从中导出选呼信息。

8. 发明授权

US5325088A Synchronous selective signalling system 失效
标题翻译：同步选择性信令系统
公开(公告)号：US5325088A
公开(公告)日：1994-06-28
申请号：US801574
申请日：1991-12-02
申请人： David F. Willard , Robert J. Schwendeman , William J. Kuznicki , Morris A. Moore , Michael J. DeLuca
发明人： David F. Willard , Robert J. Schwendeman , William J. Kuznicki , Morris A. Moore , Michael J. DeLuca
IPC分类号： H04W88/02 , H04Q7/00
CPC分类号： H04W88/026
摘要： A selective call receiver (111) has a first mask (134A) stored within the selective call receiver (111) indicative of a first period of reception for receiving a transmitted communication signal (99) having a plurality of packets (100). Each of the transmitted packet (100) has message information (110). An identifier (106) identifies the packet (100). The control signal (108) is representative of a second mask (134B) indicative of a second period of reception. The second mask is compared with the first mask for determining the second period of reception of the selective call receiver (111). A correspondence between the first and second masks determines whether to change the first period of reception of the selective call receiver (111) for receiving at least one additional packet.
摘要翻译：选呼接收机（111）具有存储在选呼接收机（111）内的第一掩码（134A），其指示用于接收具有多个分组（100）的所发送的通信信号（99）的第一接收周期。每个发送的分组（100）具有消息信息（110）。标识符（106）识别分组（100）。控制信号（108）代表指示第二接收周期的第二掩码（134B）。将第二掩码与用于确定选呼接收机（111）的第二接收周期的第一掩码进行比较。第一和第二掩模之间的对应关系确定是否改变用于接收至少一个附加分组的选呼接收机（111）的第一接收周期。

9. 发明授权

US4914649A Multiple frequency message system 失效
标题翻译：多频消息系统
公开(公告)号：US4914649A
公开(公告)日：1990-04-03
申请号：US243869
申请日：1988-09-12
申请人： Robert J. Schwendeman , David F. Willard
发明人： Robert J. Schwendeman , David F. Willard
IPC分类号： H04B7/26 , H04W84/02 , H04W88/02
CPC分类号： H04W84/022 , H04W88/022
摘要： A multiple frequency message system includes a transmitter for transmitting coded message signals on a plurality of channels of which at least one channel to be assigned to each of a plurality of geographical areas. The coded message signals include channel identification information and message information being transmitted in a sequence of coded transmission slots on each of the plurality of channels. The sequence of coded transmission slots are transmitted offset in time such that a particular transmission slot is not simultaneously transmitted on any of the plurality of channels in each geographical area.A receiver capable of receiving the coded message signals during a predetermined coded transmission slot being transmitted on the plurality of channels is also provided. The receiver includes a channel selecting circuit responsive to the detected channel identification information during the predetermined transmission slot for maintaining operation on a predetermined channel or, for sequentially receiving the predetermined transmission slot on each of the plurality of channels.
摘要翻译：多频率消息系统包括发射机，用于在多个信道上发送编码消息信号，其中至少一个信道被分配给多个地理区域中的每一个。编码消息信号包括以多个信道中的每个信道的编码传输时隙序列发送的信道标识信息和消息信息。编码的传输时隙的序列在时间上传输偏移，使得在每个地理区域中的多个信道中的任一个上不同时发送特定传输时隙。还提供了能够在多个信道上发送的预定编码传输时隙期间接收编码消息信号的接收机。该接收机包括一个频道选择电路，该频道选择电路在预定的传输时隙期间响应于检测到的频道识别信息，以保持在预定频道上的操作，或者用于在多个频道的每一个上顺序地接收预定的传输时隙。

10. 发明授权

US6073094A Voice compression by phoneme recognition and communication of phoneme indexes and voice features 失效
标题翻译：语音压缩由音素识别和通信的音素指标和语音特征
公开(公告)号：US6073094A
公开(公告)日：2000-06-06
申请号：US89081
申请日：1998-06-02
申请人： Lu Chang , Jian-Cheng Huang , Robert J. Schwendeman
发明人： Lu Chang , Jian-Cheng Huang , Robert J. Schwendeman
IPC分类号： G10L19/00 , G10L19/14
CPC分类号： G10L19/0018
摘要： A communication system includes a transmitter for transmitting messages to a plurality of receiving devices of the communication system, and a processing system. The processing system is adapted to convert a caller's voice message to a sequence of phonemes whereby the caller's voice message is intended for a receiving device. To accomplish the conversion, steps of Fourier transform, spectral subdivision, envelope filtering autocorrelation function determination of each subdivision, and voiceness determination for each subdivision are performed. The processing system is further adapted to generate a sequence of phoneme indexes and voice features corresponding to the sequence of phonemes, and to cause the transmitter to transmit the sequence of phoneme indexes to the receiving device for generating a voice signal representative of the caller's voice message. The voice features can include spectral features, average energy, duration, and pitch to improve the quality of the voice signal. The receiving device can be a selective call radio.
摘要翻译：通信系统包括用于向通信系统的多个接收设备发送消息的发射机和处理系统。处理系统适于将呼叫者的语音消息转换成一系列音素，由此呼叫者的语音消息用于接收设备。为了完成转换，执行傅立叶变换，频谱细分，每个细分的包络滤波自相关函数确定步骤和每个细分的声音确定步骤。该处理系统进一步适用于产生与音素序列相对应的音素索引和语音特征序列，并使发射机将音素索引序列发射到接收装置，以产生代表呼叫者语音消息的语音信号。语音特征可以包括频谱特征，平均能量，持续时间和音高以提高语音信号的质量。接收设备可以是选呼通话。

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