公开(公告)号：WO2015097405A1

公开(公告)日：2015-07-02

申请号：PCT/FR2014/053533

申请日：2014-12-23

Applicant: GRDF

Inventor： LACOSTE, Robert ,  DORNSTETTER, Jean-Louis

IPC: H04L27/10

CPC classification number: H04L27/14 ,  H04L7/033 ,  H04L27/10 ,  H04L27/122 ,  H04L27/2014 ,  H04Q9/00 ,  H04Q2209/40 ,  H04Q2209/60 ,  H04W4/70 ,  H04W56/0015 ,  H04W56/0035 ,  H04W56/004 ,  H04W88/16

Abstract: L'invention concerne un procédé pour gérer des transmissions de données numériques dans une installation de télérelève comprenant une pluralité de dispositifs de comptage munis d'un module radiofréquence pour communiquer avec un dispositif d'émission/réception radiofréquence d'un système de passerelle de ladite installation, ledit procédé comprenant une étape d'émission d'un signal numérique dudit module radiofréquence vers ledit dispositif d'émission/réception radiofréquence et/ou dudit dispositif d'émission/réception radiofréquence vers ledit module radiofréquence, ladite émission étant effectuée via uneporteuse modulée suivant une modulation par déplacement de fréquence, ledit procédé étant caractérisé en ce que ladite modulation est à indice de modulation strictement égal à une valeur entière divisée par deux et en ce qu'il comprend une étape de réception du signal émis suivant ladite modulation, comprenant des opérations de génération d'un signal de synchronisation synchronisé avec le signal reçu et de détection synchrone du signal reçu grâce audit signal de synchronisation.

Abstract translation: 本发明涉及一种用于管理远程读取装置中的数字数据传输的方法，该远程读取装置包括多个计量装置，该多个计量装置具有用于与所述装置的网关系统的射频收发装置通信的射频模块，所述方法包括： 从所述射频模块向所述射频收发器设备和/或从所述射频收发器设备向所述射频模块发送数字信号，所述传输是经由调频载波根据频移调制进行的，所述方法的特征在于： 所述调制具有严格等于2的整数值的调制指数，并且所述方法包括接收根据所述调制发送的信号的步骤，包括产生与接收信号同步的同步信号和同步的操作 检测收到 信号通过所述同步信号。

公开(公告)号：WO2011122908A2

公开(公告)日：2011-10-06

申请号：PCT/KR2011/002284

申请日：2011-04-01

Applicant: 엘지전자 주식회사 ,  홍호택

Inventor： 홍호택

IPC: H04N7/015 ,  H04B7/04

CPC classification number: H04W28/06 ,  H04B7/0413 ,  H04H60/07 ,  H04L1/0041 ,  H04L1/0057 ,  H04L1/0071 ,  H04L5/0007 ,  H04L27/122 ,  H04L27/2601 ,  H04L27/2627 ,  H04L45/745 ,  H04L49/3009 ,  H04L69/04 ,  H04L69/16 ,  H04L69/323 ,  H04N21/2362 ,  H04N21/2389 ,  H04N21/64322 ,  H04W72/005 ,  H04W72/0446

Abstract: 방송 신호 송신 장치, 방송 신호 수신 장치, 및 방송 신호 송/수신 장치에서 방송 신호 송수신 방법이 개시된다. 방송 신호 송신 방법은 IP 어드레스 정보에 의해 식별되는 IP 스트림의 데이터 패킷들의 헤더를 압축하며, 압축된 데이터 패킷들은 헤더에 스테이틱 필드 정보가 포함되는 제1 패킷, 헤더에 다이나믹 필드 정보가 포함되는 제2 패킷, 헤더에 압축된 스테이틱 필드 정보와 압축된 다이나믹 필드 정보 중 적어도 하나가 포함되는 제3 패킷들로 구성되는 단계, 상기 IP 스트림과 상기 IP 스트림을 전송하는 컴포넌트 PLP를 매핑하기 위한 IP-PLP 매핑 정보, 상기 IP 스트림의 압축 정보, 및 상기 제1 패킷의 헤더 정보를 L2 시그널링 정보에 시그널링하는 단계, 및 상기 제2, 제3 패킷의 헤더 정보는 상기 컴포넌트 PLP를 통해 전송하고, 상기 L2 시그널링 정보는 커먼 PLP를 통해 전송하는 단계를 포함한다.

Abstract translation: 公开了广播信号收发装置中的广播信号发送装置，广播信号接收装置和广播信号收发方法。 广播信号发送方法包括以下步骤：压缩由IP地址信息识别的IP流的数据分组的报头，其中压缩数据分组包括第一分组，其首标包含静态字段信息，第二分组， 其头部包含动态字段信息，以及第三分组，其头部包含压缩静态字段信息和/或压缩动态字段信息; 用于将IP流映射的IP-PLP映射信息和用于发送IP流的组件PLP，第一分组的IP流压缩信息和头信息到L2信令信息; 以及经由分量PLP发送第二和第三分组的报头信息，以及经由公共PLP发送L2信令信息。

公开(公告)号：WO2008127914A2

公开(公告)日：2008-10-23

申请号：PCT/US2008059618

申请日：2008-04-08

Applicant: HARRIS CORP

Inventor： FURMAN WILLIAM N ,  NIETO JOHN W

CPC classification number: H03C3/00 ,  H04L27/12 ,  H04L27/122

Abstract: Method for modulating an RF signal includes the steps of modulating an RF signal using frequency shift keying (FSK) modulation to define a plurality of symbols (2030, 2031). The FSK modulation includes transitioning the modulated signal (204) between at least two different frequencies (f1 and f0) during a guard period (210). The method includes the further step of varying a frequency of the modulated signal 204 during the guard period (210) in accordance with a predetermined rate of change. The predetermined rate of change is selected to minimize a bandwidth of the RF signal.

Abstract translation: 用于调制RF信号的方法包括以下步骤：使用频移键控（FSK）调制来调制RF信号以定义多个符号（2030,2031）。 FSK调制包括在保护周期（210）期间在至少两个不同频率（f1和f0）之间转换调制信号（204）。 该方法还包括根据预定的变化率在保护周期（210）期间改变调制信号204的频率的步骤。 选择预定变化率以最小化RF信号的带宽。

公开(公告)号：WO0247344A2

公开(公告)日：2002-06-13

申请号：PCT/EP0112402

申请日：2001-10-22

Applicant: MOTOROLA INC ,  KHLAT NADIM

Inventor： KHLAT NADIM

IPC: H03C3/00 ,  H04L27/12 ,  H04L27/20 ,  H04L27/36

CPC classification number: H04L27/365 ,  H04L27/122 ,  H04L27/2092

Abstract: A waveform generator for use in IQ modulation in a wireless cellular device having an FM waveform generator (104) that is programmable to generate a desired FM frequency deviation; a digital accumulator (108, 110, 112) to provide phase generation. First and second look-up tables 114 and 116 use the 6 MSBs and the 6 LSBs of 12-bit digital accumulator values to look up phase-space values that are combined in complex multipliers (130, 140), which are re-used from other parts of the circuit. This provides the following advantage(s): Support of both FM and I/Q modulation techniques for constant envelope modulation; low cost implementation; and flexibility to address multimode systems.

Abstract translation: 一种用于无线蜂窝设备中的IQ调制的波形发生器，该无线蜂窝设备具有FM波形发生器（104），该FM波形发生器可编程以产生期望的FM频率偏差; 数字累加器（108,110,112）以提供相位产生。 第一和第二查找表114和116使用6位MSB和12位数字累加器值的6个LSB来查找在复数乘法器（130,140）中组合的相空间值， 电路的其他部分。 这提供了以下优点：支持用于恒定包络调制的FM和I / Q调制技术; 低成本实施; 并可灵活处理多模系统。

公开(公告)号：WO1983003938A1

公开(公告)日：1983-11-10

申请号：PCT/US1983000630

申请日：1983-05-03

Applicant: BURROUGHS CORPORATION

Inventor： BURROUGHS CORPORATION ,  BELL, John, Leslie

IPC: H04L27/10

CPC classification number: H04L27/122

Abstract: An electronic circuit (50, 60, 70, 80) for producing a signal that includes a low frequency component signal followed by a high frequency component signal such that the composite signal resists transmission line distortion. The circuit comprises a logic circuit (80) for generating the half-cycle of the high frequency component signal that immediately follows the low frequency component signal with a time duration that is longer than one-half the period of the high frequency by a predetermined amount of time; and for generating the next half-cycle of the high frequency component signal with a time duration that is less than one-half the period of the high frequency by a like amount of time.

公开(公告)号：WO1981000334A1

公开(公告)日：1981-02-05

申请号：PCT/US1980000778

申请日：1980-06-23

Applicant: WESTERN ELECTRIC CO INC

Inventor： WESTERN ELECTRIC CO INC ,  FARROW C

IPC: H04L27/12

CPC classification number: H04L27/122

Abstract: A shift-keyed modulator utilizes a lookup table (41) to provide a binary sequence of digits one at a time. Since the binary digits are selected so that their accumulation represents the amplitudes of a series of points on a theoretical sinusoidal wave, a low-pass filter (51) acting as an integrator is able to provide a sinusoidal wave signal. Furthermore, the low-pass filter includes gates that operate in push-pull fashion to form a balanced configuration for cancelling even ordered harmonic distortion. The modulator has a rate multiplier (11) responsive to space/mark signaling for controlling the rate that the binary digits are produced by the lookup table. A second group of binary digits is stored in the lookup table and is read out concurrently with the first sequence. Alternate pairs of gates (52 and 53 or 54 and 55) are enabled in the low-pass filter to provide binary data signals for either of the frequency bands used in duplex data signaling circuits.

公开(公告)号：WO1979000718A1

公开(公告)日：1979-10-04

申请号：PCT/US1979000101

申请日：1979-02-26

Applicant: WESTERN ELECTRIC CO INC

Inventor： WESTERN ELECTRIC CO INC ,  SALZ J ,  WERNER J

IPC: H03C05/00

CPC classification number: H04L27/122 ,  H04L27/32

Abstract: Significant suppression of one side band of a carrier wave, frequency modulated by a baseband signal, is achieved by simultaneous and direct amplitude modulation of the carrier wave with the baseband signal when a ratio (P, fig. 2) of minimum to maximum amplitudes of the carrier wave is substantially constrained by the inequality 0.6 P 0.9. A pair of amplifiers (302, 304, Fig. 3), each having a predetermined gain wherein the ratio of the gain of the amplifier is substantially between 0.6 and 0.9, are coupled to effect the desired amplitude modulation.