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1. 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。

2. 发明授权

US5737691A System and method for allocating frequency channels in a two-way messaging network 失效
标题翻译：用于在双向消息传递网络中分配频率信道的系统和方法
公开(公告)号：US5737691A
公开(公告)日：1998-04-07
申请号：US502399
申请日：1995-07-14
申请人： Zhonghe Wang , Robert J. Schwendeman
发明人： Zhonghe Wang , Robert J. Schwendeman
IPC分类号： H04W4/12 , H04W16/04 , H04W16/10 , H04W16/14 , H04W72/06 , H04W72/08 , H04W72/10 , H04W84/02 , H04B1/00 , H04B15/00
CPC分类号： H04W84/025 , H04W16/04 , H04W16/10 , H04W72/10 , H04W84/022 , H04W16/14 , H04W4/12 , H04W72/06 , H04W72/08
摘要： In order to allocate frequency channels to transmitter units, the transmitter units are grouped in zones, each zone having one or more transmitter units (10, 20, 30) therein. A system controller (40) calculates a zone priority value which is a function of the zone's message traffic level and message latency. The zone priority value determines the order in which a zone is assigned a frequency channel. A channel priority value is calculated for each channel or sub-channel that can be accessed by the transmitter units (10, 20, 10) in the zone based on a probability of success and a mean quality margin value wherein the priority value of a channel determines the order in which an available channel is considered for assignment to a zone. A proposed channel is assigned to a given zone only if the proposed channel passes a channel quality check. The channel quality check may be based on co-channel and adjacent channel interference values. Alternatively, the channel quality check may be based on a determination of whether a channel proposed for assignment to a given zone is currently in use by another zone that is correlated with the given zone. Zones are merged and divided in order to provide increasing system capacity and better channel quality as the customer demands grow.
摘要翻译：为了向发射机单元分配频率信道，发射机单元被分组在区域中，每个区域中具有一个或多个发射机单元（10,20,30）。系统控制器（40）计算区域优先级值，该区域优先级值是该区域的消息流量级别和消息等待时间的函数。区域优先级值确定区域被分配频率信道的顺序。基于成功的概率和平均质量裕度值，针对可以由区域中的发射机单元（10,20,10）访问的每个信道或子信道的信道优先级值，其中，信道的优先级值确定将可用频道考虑用于分配给某个区域的顺序。只有建议的频道通过频道质量检查，才将所提议的频道分配给给定的频道。信道质量检查可以基于同信道和相邻信道干扰值。或者，信道质量检查可以基于确定被分配给给定区域的信道当前是否正在由与给定区域相关的另一个区域使用。区域被合并和分割，以便随着客户需求的增长提供增加的系统容量和更好的信道质量。

3. 发明授权

US5491469A Communication system for temporarily directing radio receivers to a second radio frequency 失效
标题翻译：用于将无线电接收机临时定向到第二射频的通信系统
公开(公告)号：US5491469A
公开(公告)日：1996-02-13
申请号：US258137
申请日：1994-06-10
申请人： Robert J. Schwendeman
发明人： Robert J. Schwendeman
IPC分类号： H04W8/24 , H04W88/02 , H04Q7/00
CPC分类号： H04W8/245 , H04W88/022
摘要： A radio communication system (1600) capable of communicating on at least two radio frequencies has a receiver (202, 206) which receives information addressed to at least one of a plurality of radio receivers (106) on a first radio frequency. A transmitter (104) transmits the information having a control signal therewith to at least one of the plurality of radio receivers (106) on the first radio frequency. A generator (102) generates the control signal for temporarily directing one or more of the plurality of radio receivers to a second radio frequency to receive address and message information. The radio receiver (106) has a receiver (804) which receives information on the first frequency, the information includes the control signal for temporarily directing the radio receiver (106) to the second radio frequency. A decoder (810) decodes the received information, and a frequency synthesizer 1802 directs the radio receiver (106) to receive information on the second radio frequency in response to the control signal. A controller (816) determines when to redirect the radio receiver (106) to return to the first radio frequency.
摘要翻译：能够在至少两个射频上通信的无线电通信系统（1600）具有接收器（202,206），其接收寻址到第一射频上的多个无线电接收机（106）中的至少一个的信息。发射机（104）将具有控制信号的信息发送到第一射频上的多个无线电接收机（106）中的至少一个。发生器（102）产生用于将多个无线电接收机中的一个或多个临时指挥到第二射频以接收地址和消息信息的控制信号。无线电接收机（106）具有接收关于第一频率的信息的接收机（804），该信息包括暂时将无线电接收机（106）指向第二射频的控制信号。解码器（810）解码所接收的信息，并且频率合成器1802响应于控制信号指示无线电接收机（106）接收有关第二射频的信息。控制器（816）确定何时重定向无线电接收机（106）以返回到第一射频。

4. 发明授权

US5371899A Communication system capable of reassigning radio receivers 失效
公开(公告)号：US5371899A
公开(公告)日：1994-12-06
申请号：US890981
申请日：1992-05-29
申请人： William J. Kuznicki , Robert J. Schwendeman
发明人： William J. Kuznicki , Robert J. Schwendeman
IPC分类号： H04W88/18 , H04Q7/00
CPC分类号： H04W88/185
摘要： A radio communication system (100) has radio receivers (106) assigned to a predetermined one of a plurality of time periods (FRAME 0-127). The radio communication system (100) comprises a transmitter (104) that transmits information during the predetermined time period (FRAME 0-127) assigned to at least one radio receiver (106). A receiver (202, 206) receives information directed to said at least one radio receivers (106), the radio receivers (106) being individually assigned to receive information during at least one of a plurality of predetermined time periods (FRAME 0-127). A monitoring device (1702) monitors a level of traffic associated with each of the predetermined time periods (FRAME 0-127) and a measuring device (1704) measures a level of traffic associated with the at least one radio receiver (106) over the assigned predetermined time period (FRAME 0-127). An identifying device (1708) which is coupled to the measuring device (1704) identifies if the level of traffic associated with the at least one radio receiver (106) exceeds a predetermined threshold value during the assigned predetermined time period (FRAME 0-127). A generator (1732) which is coupled to the measuring device (1706) and to the identifying device (1708) generates a control signal, and the transmitter (1736) transmits the control signal to the at least one radio receiver (106) for reassigning the at least one radio receiver (106). The at least one radio receiver (106) comprises a receiver (804) which receives the control signal and a decoder (810) which is coupled to the receiver (804) which decodes the control signal. A reassigning device (1812) which is coupled to the decoder (810) reassigns the radio receiver (106) from the assigned predetermined time period (FRAME 0-127) to another of the plurality of predetermined time periods (FRAME 0-127) having a lower level of traffic value associated therewith for reducing the level of traffic in the assigned predetermined time period (FRAME 0-127).

5. 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。

6. 发明授权

US5128665A Selective call signalling system 失效
标题翻译：选择性呼叫信令系统
公开(公告)号：US5128665A
公开(公告)日：1992-07-07
申请号：US701339
申请日：1991-05-10
申请人： Michael J. DeLuca , Gregory O. Snowden , Robert J. Schwendeman , Leon Jasinski
发明人： Michael J. DeLuca , Gregory O. Snowden , Robert J. Schwendeman , Leon Jasinski
IPC分类号： G08B5/22 , H04W88/18
CPC分类号： H04W88/187 , G08B5/227
摘要： A paging system has a signal for transmitting a variable amount of messages to paging receivers. The signal has a synchronization signal, an address field, an information and a boundary signal indicative of the boundary between the address field and the information field. Each message has addresses which are included within the address field and may have message information which is included in the information field. The information field includes two portions, a first portion having a plurality of packets for holding a predetermined amount of information and a second portion for holding a variable amount of information. If the information associated with a messasge is less than the predetermined amount, the message information is stored in the first portion of the information field. If the message information is greater than the predetermined amount, it is stored in the first and second portions of information field and a vector signal indicating the location of the message information is stored in the first information field. The first portion further includes at least one check signal which provides parity for a plurality of packets. Methods of generating the message signal, receiving a message, displaying a message and conserving power during the reception of a message are described.
摘要翻译：寻呼系统具有用于向寻呼接收机发送可变量的消息的信号。信号具有指示地址字段和信息字段之间的边界的同步信号，地址字段，信息和边界信号。每个消息具有包括在地址字段内的地址，并且可以具有包括在信息字段中的消息信息。信息字段包括两部分，第一部分具有用于保持预定量信息的多个分组，以及用于保存可变量信息的第二部分。如果与消息相关联的信息小于预定量，则消息信息被存储在信息字段的第一部分中。如果消息信息大于预定量，则将其存储在信息字段的第一和第二部分中，并且指示消息信息的位置的向量信号被存储在第一信息字段中。第一部分还包括提供多个分组的奇偶校验的至少一个检查信号。描述了在接收消息期间生成消息信号，接收消息，显示消息和节省功率的方法。

7. 发明授权

US06052443A Alphanumeric message composing method using telephone keypad 有权
标题翻译：使用电话键盘的字母数字消息编写方法
公开(公告)号：US06052443A
公开(公告)日：2000-04-18
申请号：US166739
申请日：1998-10-05
申请人： Surendra Perera , Lu Chang , Jian-Cheng Huang , Robert J. Schwendeman
发明人： Surendra Perera , Lu Chang , Jian-Cheng Huang , Robert J. Schwendeman
IPC分类号： G06F3/02 , H04M20060101 , H04M1/247 , H04M1/515 , H04M11/00 , H04Q7/16
CPC分类号： G06F3/0237 , H04M2250/70
摘要： An interactive method for composing an alphanumeric message by a caller using a telephone keypad includes storing (215) a lexical database (135) from which unigram probabilities, forward conditional probabilities, and backward conditional probabilities for a plurality of words can be recovered; storing a received sequence of key codes (405) representing a sequence in which keys on a telephone style keypad are keyed; generating a word trellis including candidate words (415) derived from the sequence and the lexical database; determining a most likely phrase (420) from the candidate words, the unigram probabilities, forward conditional probabilities, and backward conditional probabilities; generating a most likely message (425) from the most likely phrase and presenting the most likely message to the caller; and confirming that the most likely message is the alphanumeric message (430).
摘要翻译：一种用于使用电话键盘由呼叫者构成字母数字消息的交互方法包括存储（215）词法数据库（135），可从中恢复多个单词的单位概率，前向条件概率和反向条件概率; 存储表示键盘键盘上的键的序列的接收的键码序列（405）; 生成包括从序列导出的候选词（415）和词汇数据库的单词格; 从所述候选词确定最可能的短语（420），所述单字组概率，前向条件概率和向后条件概率; 从最可能的短语产生最可能的消息（425），并向呼叫者呈现最可能的消息; 并确认最可能的消息是字母数字消息（430）。

8. 发明授权

US5551061A Apparatus and method in a radio communication system for distinguishing an identifier of a nearby transmitter from that of a more distant transmitter 失效
标题翻译：用于区分附近发射机的标识符与更远的发射机的标识符的无线电通信系统中的装置和方法
公开(公告)号：US5551061A
公开(公告)日：1996-08-27
申请号：US201509
申请日：1994-02-24
申请人： Robert J. Schwendeman
发明人： Robert J. Schwendeman
IPC分类号： G08B3/10 , H04W12/06 , H04Q7/32
CPC分类号： G08B3/1083
摘要： An apparatus and a method in a radio communication system repeatedly transmit and receive identifiers including a nearby identifier received by a radio receiver from a nearby transmitter, and distant identifiers received from more distant transmitters. The method and the apparatus distinguish in a probabilistic manner the nearby identifier from the distant identifiers by determining the identifier received most dependably over a predetermined period.
摘要翻译：无线电通信系统中的装置和方法重复发送和接收包括由附近发射机接收的无线电接收机附近的附近标识符的标识符，以及从更远的发射机接收的远端标识符。该方法和装置以概率方式通过确定在预定时段内最可靠地接收的标识符来区分来自遥远标识符的附近标识符。

9. 发明授权

US5450071A Method and apparatus for addressing a single message to multiple addresses 失效
标题翻译：将单个消息寻址到多个地址的方法和装置
公开(公告)号：US5450071A
公开(公告)日：1995-09-12
申请号：US229061
申请日：1994-04-18
申请人： Michael J. DeLuca , Gregory O. Snowden , Robert J. Schwendeman , Leon Jasinski
发明人： Michael J. DeLuca , Gregory O. Snowden , Robert J. Schwendeman , Leon Jasinski
IPC分类号： G08B5/22
CPC分类号： G08B5/227
摘要： A paging system has a signal for transmitting a variable amount of messages to paging receivers. The signal has a synchronization signal, an address field, an information and a boundary signal indicative of the boundary between the address field and the information field. Each message has addresses which are included within the address field and may have message information which is included in the information field. The information field includes two portions, a first portion having a plurality of packets for holding a predetermined amount of information and a second portion for holding a variable amount of information. If the information associated with a message is less than the predetermined amount, the message information is stored in the first portion of the information field. If the message information is greater than the predetermined amount, it is stored in the first and second portions of information field and a vector signal indicating the location of the message information is stored in the first information field. The first portion further includes at least one check signal which provides parity for a plurality of packets. Methods of generating the message signal including a group message for a plurality of receivers, receiving a message including the group message, displaying a message and conserving power during the reception of a message are described.
摘要翻译：寻呼系统具有用于向寻呼接收机发送可变量的消息的信号。信号具有指示地址字段和信息字段之间的边界的同步信号，地址字段，信息和边界信号。每个消息具有包括在地址字段内的地址，并且可以具有包括在信息字段中的消息信息。信息字段包括两部分，第一部分具有用于保持预定量信息的多个分组，以及用于保存可变量信息的第二部分。如果与消息相关联的信息小于预定量，则消息信息被存储在信息字段的第一部分中。如果消息信息大于预定量，则将其存储在信息字段的第一和第二部分中，并且指示消息信息的位置的向量信号被存储在第一信息字段中。第一部分还包括提供多个分组的奇偶校验的至少一个检查信号。描述了生成消息信号的方法，其包括用于多个接收机的组消息，在接收消息期间接收包括组消息的消息，显示消息和节省功率。

10. 发明授权

US5410417A Method and apparatus for correcting an angle of an optical image for improving the efficiency of facsimile encoding of the image 失效
标题翻译：用于校正光学图像的角度以提高图像的传真编码效率的方法和装置
公开(公告)号：US5410417A
公开(公告)日：1995-04-25
申请号：US194602
申请日：1994-02-10
申请人： William J. Kuznicki , Robert J. Schwendeman
发明人： William J. Kuznicki , Robert J. Schwendeman
IPC分类号： H04N1/04 , G06T3/60 , H04N1/21 , H04N1/387 , H04N1/41 , H04Q7/00
CPC分类号： G06T3/608 , H04N1/3878
摘要： A system controller (102) is for generating a compressed facsimile message in a radio communications system (100). The system controller (102) includes an image memory (203) for storing an optical image, means for image analysis (205), means for best scan angle identification (204), an image rotator (220), and a facsimile encoder (225). The means for image analysis (205) generates a long line analysis of a portion of the stored optical image using a scan angle. The means for best scan angle identification (204) identifies a best scan angle from one or more image analyses generated by the image analysis means (205). The image rotator (220) generates an aligned optical image by using the stored optical image and the best scan angle. The facsimile encoder (225) generates the compressed facsimile message from the aligned optical image.
摘要翻译：系统控制器（102）用于在无线电通信系统（100）中生成压缩传真消息。系统控制器（102）包括用于存储光学图像的图像存储器（203），用于图像分析的装置（205），用于最佳扫描角度识别的装置（204），图像旋转器（220）和传真编码器（225））。用于图像分析的装置（205）使用扫描角度生成存储的光学图像的一部分的长线分析。用于最佳扫描角度识别的装置（204）从由图像分析装置（205）产生的一个或多个图像分析识别出最佳扫描角度。图像旋转器（220）通过使用存储的光学图像和最佳扫描角度产生对准的光学图像。传真编码器（225）从对准的光学图像生成压缩的传真消息。

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