公开(公告)号：US5592531A

公开(公告)日：1997-01-07

申请号：US415288

申请日：1995-04-03

申请人： Yan M. Cheng ,  Lu Chang

发明人： Yan M. Cheng ,  Lu Chang

IPC分类号： H04W88/18 ,  H04Q7/06 ,  H04Q7/08

CPC分类号： H04W88/185

摘要： A selective call communication system (100), such as a paging system (100), and a method therefor, for using a lexicon (134) for voice data entry in the selective call communication system (100) is shown. The system (100) associates a Voice User ID (206) to a subscriber ID (202) for one or more subscribers of the system (100). The system (100) accumulates user system statistics (208). Then, based on the accumulated user system statistics (208), the system (100) defines a lexicon (134) to include at least one Voice User ID (206) for the one or more subscribers for voice data entry for the system (100).

摘要翻译： 示出了用于在选呼通信系统（100）中使用语音数据输入的词典（134）的选呼通信系统（100），诸如寻呼系统（100）及其方法。 系统（100）将语音用户ID（206）与用于系统（100）的一个或多个订户的用户ID（202）相关联。 系统（100）累积用户系统统计（208）。 然后，基于累积的用户系统统计信息（208），系统（100）定义一个词典（134），以包含用于一个或多个用户的至少一个语音用户ID（206），用于系统的语音数据输入（100 ）。

公开(公告)号：US20050013719A1

公开(公告)日：2005-01-20

申请号：US10607379

申请日：2003-06-26

申请人： Chun Fong ,  Lu Chang

发明人： Chun Fong ,  Lu Chang

IPC分类号： F01C1/077 ,  F03C2/00

CPC分类号： F01C1/077

摘要： This rotary piston engine is to propel twin or double twin pistons to do a rotational run in the round-section cylinder. The characteristic is when the stop-piston is locked, it cannot rotate until being unlocked. Another piece or pairs rotary pistons perform the four processes of the internal combustion engine. They are air absorption, compression, expansion and exhaustion.

摘要翻译： 该旋转活塞发动机是推动双或双双活塞在圆形气缸中进行旋转运行。 特点是当止动活塞被锁定时，它不能旋转直到被解锁。 另一个或两对旋转活塞执行内燃机的四个过程。 它们是空气吸收，压缩，膨胀和耗尽。

公开(公告)号：US6151572A

公开(公告)日：2000-11-21

申请号：US67779

申请日：1998-04-27

申请人： Yan-Ming Cheng ,  Lu Chang ,  Kenneth D. Finlon ,  Arthur G. Herkert

发明人： Yan-Ming Cheng ,  Lu Chang ,  Kenneth D. Finlon ,  Arthur G. Herkert

IPC分类号： G10L15/00 ,  G10L15/26 ,  H04M1/64

CPC分类号： H04M3/533 ,  H04M2201/40 ,  H04M2201/60

摘要： A radio communication system includes a voice recognition system (218), a transmitter (202) and a processing system (210). The voice recognition system is utilized for receiving caller initiated messages, and the transmitter is used for transmitting messages to a plurality of SCRs (selective call radios) (122) of the radio communication system. The processing system, which is coupled to the voice recognition system, and the transmitter, is adapted to cause the voice recognition system to convert a voice signal representative of a voice message originated by a caller of the radio communication system to a text message (401, 417), wherein the text message is intended for a SCR, to then generate a likelihood of success that the voice signal has been flawlessly converted to a text message, to have a human listen to an audible representation of the voice signal, and to cause the transmitter to transmit the text message to the SCR (432). The converting step includes autocorrelation by Fourier transform, measure a degree of voiceness for each band, applying the degree of voiceness to a corresponding plurality of phenome models, and deriving a text equivalent by searching through a phenome library.

摘要翻译： 无线电通信系统包括语音识别系统（218），发射机（202）和处理系统（210）。 语音识别系统被用于接收主叫方发起的消息，并且发射机用于向无线电通信系统的多个SCR（选择性呼叫无线电）（122）发送消息。 耦合到语音识别系统的处理系统和发射机适于使语音识别系统将表示由无线电通信系统的呼叫者发起的语音消息的语音信号转换成文本消息（401 ，417），其中所述文本消息旨在用于SCR，然后生成所述语音信号已经被完美地转换为文本消息的成功的可能性，以使人们听到所述语音信号的可听见的表示，并且 使发射机将文本消息发送到SCR（432）。 转换步骤包括通过傅立叶变换的自相关，测量每个频带的声音程度，将声音的程度应用于对应的多个表现模型，以及通过在phenome库中搜索来导出等价文本。

公开(公告)号：US6137867A

公开(公告)日：2000-10-24

申请号：US78733

申请日：1998-05-14

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： H04M11/00

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).

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。

公开(公告)号：US6163765A

公开(公告)日：2000-12-19

申请号：US50184

申请日：1998-03-30

申请人： Oleg Andric ,  Lu Chang ,  Jian-Cheng Huang ,  Arthur Gerald Herkert

发明人： Oleg Andric ,  Lu Chang ,  Jian-Cheng Huang ,  Arthur Gerald Herkert

IPC分类号： G10L15/02 ,  G10L25/93 ,  H04W88/18

CPC分类号： H04W4/18 ,  G10L15/02 ,  G10L2015/025 ,  G10L2025/937 ,  H04W4/14

摘要： A radio communication system includes a voice recognition system (221) for converting (400) a caller's voice message to a textual speech message. The textual speech message is then transmitted to an intended selective call radio (122). To perform these functions, the radio communication system includes a caller interface circuit (218), a transmitter (116), and a processor (222). To perform voice-to-text conversion, the processor is adapted to cause the caller interface circuit to sample a voice signal generated by the caller during a plurality of frame intervals, and to apply a Fourier transform thereto, thereby generating spectral data. The spectral data is subdivided into a plurality of bands. The spectral envelope of the spectral data is then filtered out to generate filtered spectral data. A Fourier transform is applied thereto to generate an autocorrelation function for each band. From the autocorrelation function of each band, a magnitude is determined, which is representative of the degree of voiceness of each band. The degree of voiceness for each band is then applied to a corresponding plurality of phoneme models, which are used to derive a textual equivalent of speech from the voice signal. The textual equivalent of speech is then transmitted to the selective call radio by way of the transmitter.

摘要翻译： 无线电通信系统包括用于将呼叫者的语音消息转换（400）到文本语音消息的语音识别系统（221）。 然后将文本语音消息发送到预期的选择呼叫无线电（122）。 为了执行这些功能，无线电通信系统包括呼叫者接口电路（218），发射器（116）和处理器（222）。 为了执行语音到文本转换，处理器适于使呼叫者接口电路在多个帧间隔期间采样由呼叫者产生的语音信号，并对其进行傅里叶变换，由此产生频谱数据。 光谱数据被细分成多个频带。 然后滤出光谱数据的光谱包络以产生滤波的光谱数据。 对其进行傅立叶变换以产生每个频带的自相关函数。 根据每个频带的自相关函数，确定一个幅度，其代表每个频带的声音程度。 然后将每个频带的声音程度应用于相应的多个音素模型，这些音素模型用于从语音信号中导出语音的文本等价物。 然后通过发射机将语音的文本等价物发送到选呼通话。

公开(公告)号：US5974121A

公开(公告)日：1999-10-26

申请号：US108828

申请日：1998-07-01

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： H04M11/00

CPC分类号： H04M11/022

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).

公开(公告)号：US20190158799A1

公开(公告)日：2019-05-23

申请号：US15817043

申请日：2017-11-17

申请人： Xinting Gao ,  Wenshou Chen ,  Shan Xu ,  Yanfang Huang ,  Guansong Liu ,  Lu Chang

发明人： Xinting Gao ,  Wenshou Chen ,  Shan Xu ,  Yanfang Huang ,  Guansong Liu ,  Lu Chang

IPC分类号： H04N13/00 ,  H04N5/262 ,  H04N5/232 ,  G06K9/46

摘要： A multiple camera imaging system, comprising: a first camera image sensor configured to obtain a first image of a scene from a first vantage perspective point; a second camera image sensor configured to obtain a second image of the scene from a second vantage perspective point; and an image signal processor (ISP), configured to process the first image and the second image by performing the following steps: producing a first roughly-aligned image from the first image, and a second roughly-aligned image from the second image; using the first and second roughly-aligned images to produce a disparity image; identifying a feature point within the first roughly-aligned image; utilizing the disparity image to create a search zone within the second roughly-aligned image; and identifying a group of candidate feature points within the search zone; identifying within the search zone a best-matched candidate feature point that best matches the feature point within the first roughly-aligned image to form a best-matched feature point pair; and using information from the best-matched feature point pair to further align the first and second roughly-aligned images.

公开(公告)号：US08937963B1

公开(公告)日：2015-01-20

申请号：US13613541

申请日：2012-09-13

申请人： Madihally J. Narasimha ,  Lu Chang

发明人： Madihally J. Narasimha ,  Lu Chang

IPC分类号： H04L12/56

CPC分类号： H04L47/22 ,  H04L47/283 ,  H04L47/365

摘要： A system is provided and includes a buffer, an interface, a processor, and an output device. The interface is configured to receive a packet from a network. The processor is configured to: determine a delay of the network in transmitting the packet; prior to storing the packet in the buffer, determine statistics of the buffer, and an amount the buffer is filled; determine a predetermined delay of the buffer based on the delay of the network, and the statistics; estimate an actual delay of the buffer for the packet based on the amount the buffer is filled; generate an error signal based on the predetermined delay and the actual delay; and based on the error signal, one of compress and expand the packet to change a first length of the packet to a second length. The output device is configured to output the packet based on the second length.

摘要翻译： 提供了一种系统，包括缓冲器，接口，处理器和输出设备。 该接口被配置为从网络接收分组。 处理器被配置为：确定网络在发送分组中的延迟; 在将分组存储在缓冲器中之前，确定缓冲器的统计数据和缓冲器的填充量; 基于网络的延迟确定缓冲器的预定延迟和统计; 基于缓冲器的填充量来估计分组的缓冲器的实际延迟; 基于预定延迟和实际延迟产生误差信号; 并且基于误差信号，压缩并展开分组以将分组的第一长度改变为第二长度。 输出设备被配置为基于第二长度输出分组。

公开(公告)号：US08279884B1

公开(公告)日：2012-10-02

申请号：US11764790

申请日：2007-06-18

申请人： Madihally J. Narasimha ,  Lu Chang

发明人： Madihally J. Narasimha ,  Lu Chang

IPC分类号： H04L12/56

CPC分类号： H04L47/22 ,  H04L47/283 ,  H04L47/365

摘要： The present invention is a method of correcting packet discontinuities using the steps of: (A) generating a continuous real time data stream from input of media content from a media source comprising packets transmitted by way of a computer packet network to a specific receiving device to establish a transmission portion of an end to end communication, (B) a jitter buffer receiving real time data stream packets from the packet network and temporarily storing at least some of them in the jitter buffer, (C) the jitter buffer operating on multiple fixed length packets to output a first output of a predetermined sequence of said fixed length packets, preferably substantially as they were originally transmitted, (D) a control unit receiving the first output and changing the length of one or more of fixed length packets of the first output to form a second output in response to a detected delay or other discontinuity in the packet sequence, (E) a playout buffer receiving the second output and operating on the stream of original and varied length packets to deliver them to a digital to analog converter (DAC), and (F) transmission of analog output of the DAC to interface devices such as displays, speakers, and mechanical devices for intelligible playout of the media content for appreciation by a human interacting with the interface devices.

摘要翻译： 本发明是一种使用以下步骤来校正分组不连续性的方法：（A）从包括通过计算机分组网络发送的分组的媒体源的媒体内容的输入生成连续的实时数据流到特定接收装置， 建立端对端通信的传输部分，（B）抖动缓冲器，接收来自分组网络的实时数据流分组，并将其中的至少一部分暂时存储在抖动缓冲器中;（C）抖动缓冲器在多个固定 长度分组，以输出所述固定长度分组的预定序列的第一输出，优选地基本上如同它们原始地传输的那样;（D）控制单元接收第一输出并且改变第一输出的一个或多个固定长度分组的长度 输出以响应于分组序列中的检测到的延迟或其他不连续性而形成第二输出，（E）接收第二输出的播放缓冲器 d在原始和不同长度数据包流上运行，将其传送到数模转换器（DAC），以及（F）将DAC的模拟输出传输到接口设备，如显示器，扬声器和机械设备，以进行可理解的播放 的媒体内容，供人们与界面设备进行互动。