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

US06650150B2 Numerically controlled oscillator in particular for a radiofrequency signal receiver 失效
公开(公告)号：US06650150B2
公开(公告)日：2003-11-18
申请号：US09988276
申请日：2001-11-19
申请人： Pierre-André Farine , Jean-Daniel Etienne , Ruud Riem-Vis , Elham Firouzi
发明人： Pierre-André Farine , Jean-Daniel Etienne , Ruud Riem-Vis , Elham Firouzi
IPC分类号： H03B2100
CPC分类号： G06F7/68 , G01S19/13 , G01S19/29 , G01S19/34 , G01S19/35 , G06F1/0328 , H04B2001/70706
摘要： The numerically controlled oscillator (8) is mounted in particular in a radiofrequency signal receiver which further includes means (3) for receiving and shaping the radiofrequency signals, a correlation stage (4) and a clock signal generator. The oscillator receives at one input a clock signal with a first frequency (CLK) which clocks the oscillator operations, and a binary word of several bits (Nb) to provide at one output at least an output signal (Mb) with a frequency determined as a function of said binary word and the clock signal. The oscillator includes a first accumulation stage (12) for a first number of most-significant bits (Ob) of the binary word and a second accumulation stage (12) for a second number of least-significant bits (Pb) of said binary word. The first accumulation stage is clocked at the first clock frequency (CLK) to supply the determined frequency output signal (Mb), while the second stage is clocked at a second clock frequency (CLK/N) N times lower than the first clock frequency. Output bits (Qb) or binary signals from the second stage are multiplied by N to be introduced at the input of the first stage every N cycles of the clock signal at the first frequency (CLK).

2. 发明授权

US07023905B2 Correlation and demodulation circuit for a receiver for signals modulated by a specific code 失效
标题翻译：用于由特定码调制的信号的接收机的相关和解调电路
公开(公告)号：US07023905B2
公开(公告)日：2006-04-04
申请号：US09994886
申请日：2001-11-28
申请人： Pierre-André Farine , Jean-Daniel Etienne , Ruud Riem-Vis , Elham Firouzi
发明人： Pierre-André Farine , Jean-Daniel Etienne , Ruud Riem-Vis , Elham Firouzi
IPC分类号： H04B15/00 , H04K1/00 , H04L27/00
CPC分类号： H04L1/24 , G01S19/23 , G01S19/30 , H04B1/707 , H04B1/709 , H04B2201/70715
摘要： The correlation and demodulation circuit (6) in particular for a pseudo-random code radio-frequency signal receiver (1) includes a correlation stage (7) connected to a microprocessor (12) in particular for configuring the correlation stage in normal operating mode or in test mode. In normal operation the stage receives intermediate signals (IF) corresponding to the radio-frequency signals shaped in means (3) for receiving the modulated signals from the receiver. The intermediate signals are correlated in a correlator control loop (8) of said correlation stage (7) with a replica of the first code supplied by a code generator (25). The code generator (25) is adapted via a microprocessor (12) to generate a replica of a pseudo-random code of shorter repetition length than the pseudo-random code of the radio-frequency signals. Intermediate test signals (IFtest) with a reduced pseudo-random code are supplied to the correlation stage (7) so as to perform a test representative of the correlation stage in closed loop operation more quickly than with conventional intermediate signals.
摘要翻译：特别是用于伪随机码射频信号接收机（1）的相关和解调电路（6）包括连接到微处理器（12）的相关级（7），特别是用于在正常操作模式下配置相关级或在测试模式。在正常操作中，平台接收对应于在装置（3）中形成的射频信号的中间信号（IF），用于从接收机接收调制信号。中间信号在所述相关级（7）的相关器控制环路（8）中与代码生成器（25）提供的第一代码的副本相关。代码生成器（25）通过微处理器（12）进行调整，以生成比射频信号的伪随机码短的重复长度的伪随机码的副本。具有减少的伪随机码的中间测试信号（IFS测试）被提供给相关级（7），以便在闭环操作中执行代表相关级的测试比常规中间信号。

3. 发明授权

US06912242B2 Low power RF receiver with redistribution of synchronisation tasks 失效
标题翻译：低功率RF接收机，具有同步任务的重新分配
公开(公告)号：US06912242B2
公开(公告)日：2005-06-28
申请号：US09886025
申请日：2001-06-22
申请人： Pierre-André Farine , Jean-Daniel Etienne , Ruud Riem-Vis , Elham Firouzi
发明人： Pierre-André Farine , Jean-Daniel Etienne , Ruud Riem-Vis , Elham Firouzi
IPC分类号： G04G1/00 , G01S1/00 , G01S19/14 , G01S19/29 , G01S19/30 , G01S19/34 , G01S19/35 , H04B1/06 , H04B1/707 , H04B7/185 , H04B1/69 , H04B1/713
CPC分类号： H04B1/7075 , G01S19/14 , G01S19/29 , G01S19/30 , G01S19/34 , G01S19/35 , H04B1/709 , H04B7/18517 , Y02D70/164 , Y02D70/26 , Y02D70/40 , Y02D70/446
摘要： A low power RF receiver (1) has an antenna (2), a reception and shaping stage (3) for the radio-frequency signals provided by the antenna, a 12-channel correlation stage (7) receiving intermediate signals (IF) shaped by the reception stage (3), and a microprocessor (12) connected to the correlation stage for calculating X, Y and Z position, velocity and time data as a function of data provided by the radio-frequency signals, such as GPS signals, transmitted by satellites. Each channel includes a correlator (8) associated with a controller (9), which also includes a digital signal processing algorithm to allow all the synchronisation tasks for acquiring and tracking a satellite to be performed autonomously when the channel (7′) is set in operation, and to lock onto the satellite. Buffer registers (11) are placed at the interface between the correlation stage (7) and the microprocessor (12) for the mutual transfer of data. The low power RF receiver may be mounted in the case of a watch and powered by the energy accumulator or battery of the watch.
摘要翻译：低功率RF接收器（1）具有天线（2），用于由天线提供的射频信号的接收和整形级（3），12信道相关级（7），接收中间信号（IF）形状通过接收级（3）和连接到相关级用于计算X，Y和Z位置的速度和时间数据的微处理器（12），作为由诸如GPS信号的射频信号提供的数据的函数，由卫星传输。每个通道包括与控制器（9）相关联的相关器（8），该相关器（8）还包括数字信号处理算法，以便当信道（7'）被设置为自动地允许所有同步任务用于获取和跟踪卫星被自主执行操作，并锁定在卫星上。缓冲寄存器（11）被放置在相关级（7）和微处理器（12）之间的接口处，用于数据的相互传送。低功率RF接收器可以安装在手表的情况下并由手表的蓄能器或电池供电。

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