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21 条记录 (耗时 0.028 秒)

    Apparatus for finely synchronizing code signals
    3.
    发明授权
    Apparatus for finely synchronizing code signals 失效
    用于精细同步码信号的装置

    公开(公告)号：US06891886B2

    公开(公告)日：2005-05-10

    申请号：US10139195

    申请日：2002-05-06

    申请人： Markus Doetsch ,  Peter Jung ,  Jörg Plechinger ,  Michael Schneider ,  Patrick Feyfant ,  Tideya Kella ,  Peter Schmidt

    发明人： Markus Doetsch ,  Peter Jung ,  Jörg Plechinger ,  Michael Schneider ,  Patrick Feyfant ,  Tideya Kella ,  Peter Schmidt

    IPC分类号： H04L7/00 ,  H04B1/707 ,  H04B1/69 ,  H04L27/06

    CPC分类号： H04B1/7085

    摘要： An apparatus for finely synchronizing code signals with an encoded received signal includes a sampling device for sampling the received signal at regular sampling intervals, a pulse shaper for shaping the sampled received signal pulses in order to output a first and second pulse-shaped sample in dependence on an autocorrelation function, a buffer for buffering the two samples, a code signal generator for generating the code signal, correlation devices for correlating the generated code with the two buffered samples to form two correlation values, and an interpolation device for forming an interpolation value as a function of the two pulse-shaped samples and the deviation between the two correlation values.

    摘要翻译： 用于将编码信号与编码的接收信号精细同步的装置包括用于以规则采样间隔对接收信号进行采样的采样装置，用于整形采样的接收信号脉冲的脉冲整形器，以依次输出第一和第二脉冲样本 在自相关函数上，用于缓冲两个样本的缓冲器，用于产生代码信号的代码信号发生器，用于将生成的代码与两个缓冲的样本相关联以形成两个相关值的相关器件，以及用于形成插值的内插器件 作为两个脉冲样本的函数和两个相关值之间的偏差。

    Method and device for generating OVSF code words
    5.
    发明授权
    Method and device for generating OVSF code words 失效
    用于生成OVSF代码字的方法和设备

    公开(公告)号：US06646579B2

    公开(公告)日：2003-11-11

    申请号：US10203067

    申请日：2002-09-23

    申请人： Markus Doetsch ,  Patrick Feyfant ,  Peter Jung ,  Tideya Kella ,  Joerg Plechinger ,  Peter Schmidt ,  Michael Schneider

    发明人： Markus Doetsch ,  Patrick Feyfant ,  Peter Jung ,  Tideya Kella ,  Joerg Plechinger ,  Peter Schmidt ,  Michael Schneider

    IPC分类号： H04B7216

    CPC分类号： H04J13/12 ,  H04B2201/70703 ,  H04J13/0044

    摘要： A code word generator for OVSF codes, comprising an intermediate memory device (16) which is used to input a calculation index as a binary calculation index data word, a calculation device (17) which permutes the significant data bits of the calculation index data word bit-by-bit so that a calculation basis (B) can be generated, a counter (21) for producing a counting variable (Z) and provided with a logic circuit comprising several AND gates for bit-by-bit linkage of the counting variables (Z) generated with the calculation basis (B) in order to form a linking data word and several XOR gates for logical reduction of the linking data word to form code word data bits of the OVSF code word.

    摘要翻译： 一种用于OVSF码的码字生成器，包括用于将计算索引作为二进制计算索引数据字输入的中间存储器件（16），计算装置（17），其将计算索引数据字的有效数据位 逐位地使得可以生成计算基础（B），用于产生计数变量（Z）的计数器（21），并且设置有包括多个与门的逻辑电路，用于逐位连接计数 以计算基础（B）生成的变量（Z），以便形成链接数据字和多个用于逻辑缩减链接数据字的XOR门，以形成OVSF码字的码字数据位。

    Voice recording and playback mode using the G.726 half-rate within the personal handy phone system
    6.
    发明授权
    Voice recording and playback mode using the G.726 half-rate within the personal handy phone system 有权
    语音录音和播放模式使用个人手机系统内的G.726半速率

    公开(公告)号：US06574281B1

    公开(公告)日：2003-06-03

    申请号：US09753824

    申请日：2001-01-02

    申请人： Satoshi Yoshida ,  Patrick Feyfant ,  Philippe Gaglione ,  Denis Archambaud ,  Varenka Martin ,  Laurent Winckel ,  Rita Lagomarsino ,  Oliver Weigelt

    发明人： Satoshi Yoshida ,  Patrick Feyfant ,  Philippe Gaglione ,  Denis Archambaud ,  Varenka Martin ,  Laurent Winckel ,  Rita Lagomarsino ,  Oliver Weigelt

    IPC分类号： H04B1406

    CPC分类号： H04M1/725 ,  H04B14/068 ,  H04M1/6505

    摘要： Voice recording and playback mode using the G.726 half-rate within the personal handy phone system (PHS). When a portable station within the PHS operates as a voice recorder (e.g., functioning as an answering machine), a cost effective system in accordance with the present invention is adapted to compress and store received voice/sound signals in order to increase the usage of limited memory resources provided within the portable station. The present invention also enables previously compressed and stored voice/sound signals to be decompressed and played back in various portable station playback modes. Specifically, the portable station receives a voice/sound signal in a full rate (e.g., 32 kilobits-per-second) 4-bit adaptive differential pulse code modulation (ADPCM) data format in compliance with the International Telecommunication Union (ITU) recommendation G.726. The present invention compresses this received voice/sound signal to a half rate (16 kilobit-per-second) 2-bit ADPCM data format in compliance with the ITU recommendation G.726 in order to increase the usage of the limited memory resources provided within the portable station. During a playback mode of the portable station, the present invention decompresses the previously compressed and stored voice/sound signal to facilitate its playback.

    摘要翻译： 录音和播放模式使用个人手机系统（PHS）内的G.726半速率。 当PHS内的便携式站作为语音记录器（例如，用作应答机）时，根据本发明的成本有效的系统适于压缩和存储接收到的语音/声音信号，以便增加使用 在便携式站内提供的有限的存储器资源。 本发明还使得先前压缩和存储的语音/声音信号能够以各种便携式电台播放模式被解压缩和重放。 具体来说，便携式电台以符合国际电信联盟（ITU）推荐G的全速率（例如，32千比特每秒）4位自适应差分脉码调制（ADPCM）数据格式接收语音/声音信号 .726。 本发明根据ITU推荐G.726将该接收到的语音/声音信号压缩到半速率（16千比特每秒）2位ADPCM数据格式，以便增加在内部提供的有限存储器资源的使用 便携式电台。 在便携式终端的回放模式期间，本发明解压缩先前压缩和存储的语音/声音信号以便于其播放。

    Direct digital down conversion of a 10.8 MHz intermediate frequency signal in the personal handy phone system
    7.
    发明授权
    Direct digital down conversion of a 10.8 MHz intermediate frequency signal in the personal handy phone system 失效
    在个人手持电话系统中直接数字下变频10.8 MHz中频信号

    公开(公告)号：US06134429A

    公开(公告)日：2000-10-17

    申请号：US58611

    申请日：1998-04-10

    申请人： Patrick Feyfant ,  Laurent Winckel ,  Satoshi Yoshida ,  Philippe Gaglione ,  Varenka Martin ,  Oliver Weigelt ,  Denis Archambaud

    发明人： Patrick Feyfant ,  Laurent Winckel ,  Satoshi Yoshida ,  Philippe Gaglione ,  Varenka Martin ,  Oliver Weigelt ,  Denis Archambaud

    IPC分类号： H03D3/00 ,  H04B1/28 ,  H04B1/30 ,  H04L27/22 ,  H04Q7/32

    CPC分类号： H04B1/0007 ,  H03D3/006 ,  H04B1/28 ,  H04B1/30 ,  H04L27/22

    摘要： A system for a direct digital down conversion of a 10.8 MHz intermediate frequency signal in the personal handy phone system. The present invention includes a system that enables a direct digital down conversion of a 10.8 MHz intermediate frequency signal into a digital baseband signal within cell stations and portable stations of the personal handy phone system. To perform this direct digital down conversion of a 10.8 MHz intermediate frequency signal, one embodiment of the present invention uses a hard limiter circuit, a sampler circuit and a digital down converter circuit. The hard limiter circuit of the present invention receives a 10.8 MHz intermediate frequency signal, utilized within cell stations and portable station of the personal handy phone system, and provides a threshold for it. The sampler circuit uses a 19.2 MHz oscillating clock signal to sample the intermediate frequency signal that is output from the hard limiter circuit. Due to spectral leakage, the 10.8 MHz intermediate frequency signal that was input into the sampler circuit is output as an 8.4 MHz intermediate frequency signal. The digital down converter circuit uses an 8.4 MHz signal to perform a digital down conversion of the 8.4 MHz intermediate frequency signal into a digital baseband signal. The present invention provides a system that utilizes only one digital down conversion stage to perform a direct digital down conversion of a 10.8 MHz intermediate frequency signal into a digital baseband signal.

    摘要翻译： 一种用于个人手持电话系统中的10.8MHz中频信号的直接数字下变频的系统。 本发明包括一种能够将10.8MHz中频信号直接数字下转换成个人便携式电话系统的小区站和便携式站内的数字基带信号的系统。 为了执行10.8MHz中频信号的这种直接数字下变频，本发明的一个实施例使用硬限幅器电路，采样器电路和数字下变频电路。 本发明的硬限制器电路接收在个人便携式电话系统的小区站和便携式站内使用的10.8MHz中频信号，并为其提供阈值。 采样器电路使用19.2MHz振荡时钟信号对从硬限幅器电路输出的中频信号进行采样。 由于频谱泄漏，输入到采样器电路的10.8 MHz中频信号作为8.4 MHz中频信号输出。 数字降频转换器电路使用8.4MHz信号来执行8.4MHz中频信号的数字下变频转换为数字基带信号。 本发明提供一种仅使用一个数字下变频级来执行10.8MHz中频信号的直接数字下变频到数字基带信号的系统。

    Wireless local loop automatic delay setting
    9.
    发明授权
    Wireless local loop automatic delay setting 失效
    无线本地环路自动延时设置

    公开(公告)号：US06233257B1

    公开(公告)日：2001-05-15

    申请号：US08943324

    申请日：1997-10-03

    申请人： Satoshi Yoshida ,  Patrick Feyfant ,  Varenka Martin ,  Laurent Winckel ,  Philippe Gaglione ,  Oliver Weigelt ,  Denis Archambaud

    发明人： Satoshi Yoshida ,  Patrick Feyfant ,  Varenka Martin ,  Laurent Winckel ,  Philippe Gaglione ,  Oliver Weigelt ,  Denis Archambaud

    IPC分类号： H04J306

    CPC分类号： H04J3/0626 ,  H04W56/0075 ,  H04W56/009

    摘要： A method and system that enables an automatic delay setting within a wireless local loop system. The present invention determines the transmission distance time delay existing between a base station and a personal station by employing the communication interface that is utilized between them. The main reason for determining the transmission time delay caused by large transmission distances (e.g., over 300 meters) existing between base stations and personal stations is to compensate for it. Once the transmission distance time delay is known, the personal station utilizes that value to compensate for it. Specifically, the present invention directs a base station to transmit a control signal to a personal station. The personal station receives the control signal and transmits a signal to the base station. The base station determines if it started to receive the signal from the personal station later than it expected the signal to arrive, assuming close proximity of the two stations. If the signal arrived when it was expected to arrive, the base station discontinues determining the transmission distance time delay. If the signal arrived later than expected, the base station calculates the time difference between the expected arrival time and the actual arrival of the signal. The time difference is equivalent to the transmission distance time delay. Once the time difference is determined, the base station then transmits it to the personal station. The personal station stores the transmission distance time delay value enabling it to compensate for it.

    摘要翻译： 一种能够在无线本地环路系统内实现自动延迟设置的方法和系统。 本发明通过采用在它们之间利用的通信接口来确定存在于基站和个人站之间的传输距离时间延迟。 确定由基站和个人站之间存在的大传输距离（例如，超过300米）引起的传输时间延迟的主要原因是为了补偿它。 一旦知道传输距离时间延迟，个人站利用该值来补偿它。 具体地，本发明指示基站向个人站发送控制信号。 个人站接收控制信号并向基站发送信号。 假设靠近两个台站，基站确定是否开始接收来自个人站的信号晚于预期信号到达的信号。 如果信号在预期到达时到达，则基站中断确定传输距离时间延迟。 如果信号到达迟于预期，则基站计算预期到达时间和信号的实际到达之间的时间差。 时间差等于传输距离时间延迟。 一旦确定了时差，基站然后将其发送到个人站。 个人站存储传输距离时间延迟值，使其能够进行补偿。