公开(公告)号：US20030222803A1

公开(公告)日：2003-12-04

申请号：US10169332

申请日：2002-10-15

发明人： Shai Cohen ,  Ronnen Lovinger

IPC分类号： H03M005/08 ,  G06F001/04

CPC分类号： G11C27/02 ,  H03K5/131 ,  H03K5/133 ,  H03K5/1565 ,  H03K2005/00058 ,  H04L7/0008 ,  H04L7/0037 ,  H04L7/042 ,  H04L7/10

摘要： A method and apparatus (20) for adjusting a duty cycle of a binary signal (36) having a high phase and a low phase. The method includes applying a delay to the binary signal to create a delayed signal, and performing a Boolean logical operation on the binary signal and the delayed signal, so as to generate an output signal (40, 52) having a duty cycle different from the duty cycle of the binary signal.

摘要翻译： 一种用于调整具有高相位和低相位的二进制信号（36）的占空比的方法和装置（20）。 该方法包括对二进制信号施加延迟以产生延迟信号，以及对二进制信号和延迟信号执行布尔逻辑运算，以便产生具有不同于二进制信号的占空比的输出信号（40,42） 二进制信号的占空比。

公开(公告)号：US20030117300A1

公开(公告)日：2003-06-26

申请号：US10166410

申请日：2002-06-11

申请人： Mitsubishi Denki Kabushiki Kaisha

发明人： Hiroyuki Harada ,  Masako Arizumi

IPC分类号： H03M005/08 ,  H03M001/82

CPC分类号： H03M1/822

摘要： A PWM converting circuit includes a pulse generator for generating two pulse signals for each bit of a basic clock pulse train in response to the value of digital input data, and a differential amplifier for outputting a differential amplification component between the two pulse signals as a PWM signal. The pulse generator varies a pulse width of one of the two pulse signals on a bit-by-bit basis of the basic clock pulse train in response to the value of the digital input data, and holds a level of the other of the two pulse signals throughout the entire bits of the basic clock pulse train within the period of the pulse of the PWM signal.

摘要翻译： PWM转换电路包括：脉冲发生器，用于响应于数字输入数据的值而产生基本时钟脉冲串的每个位的两个脉冲信号;以及差分放大器，用于在两个脉冲信号之间输出作为PWM的差分放大分量 信号。 脉冲发生器响应于数字输入数据的值，在基本时钟脉冲串的逐位基础上改变两个脉冲信号中的一个的脉冲宽度，并且保持两个脉冲中的另一个的电平 在PWM信号的脉冲周期内的基本时钟脉冲串的整个位的信号。

公开(公告)号：US20040095263A1

公开(公告)日：2004-05-20

申请号：US10295539

申请日：2002-11-14

申请人： Fyre Storm, Inc.

发明人： John Carl Thomas

IPC分类号： H03M005/08

CPC分类号： H02M3/157 ,  G05F3/262 ,  H02J7/0065 ,  H02M1/0845 ,  H02M3/156 ,  H02M3/1588 ,  H02M2001/0012 ,  H02M2001/007 ,  H02M2001/008 ,  H03M5/08 ,  H05B41/2828 ,  Y02B20/186 ,  Y02B70/1466 ,  Y10T307/438 ,  Y10T307/469

摘要： A control system and method for simultaneously regulating the operation of a plurality of different types of switching power converters. The system utilizes in regulating the power converters sampled data and nonlinear feedback control loops.

公开(公告)号：US20030122692A1

公开(公告)日：2003-07-03

申请号：US10034909

申请日：2002-01-02

发明人： William J. Roeckner ,  Pallab Midya ,  Poojan A. Wagh ,  William J. Rinderknecht

IPC分类号： H03M005/08 ,  H03M003/00 ,  H03M001/82

CPC分类号： H03F3/2175 ,  H03F2200/331 ,  H03M1/822 ,  H03M5/08

摘要： A method and apparatus for a pulse width modulated (PWM) signal (30, 130) is provided. The input is a digital signal which is a modulated signal (24, 124). In the illustrated form, the modulated input signal is either a PDM signal or a PCM signal. In one embodiment of the present invention a PCM to PWM converter (16, 116) includes correction of duty ratio circuitry (48). The methodology used may include recursion on the values obtained after prediction, interpolation, and correction. The digital to analog conversion system (10) uses a PDM to PWM converter (20) which operates in an all digital domain and includes no analog circuitry.

摘要翻译： 提供了一种用于脉宽调制（PWM）信号（30,130）的方法和装置。 输入是作为调制信号（24,124）的数字信号。 在所示的形式中，调制输入信号是PDM信号或PCM信号。 在本发明的一个实施例中，PCM至PWM转换器（16,116）包括占空比电路（48）的校正。 所使用的方法可以包括在预测，插值和校正之后获得的值的递归。 数模转换系统（10）使用PDM到PWM转换器（20），其在全数字域中工作，并且不包括模拟电路。

公开(公告)号：US20040169595A1

公开(公告)日：2004-09-02

申请号：US09817095

申请日：2001-03-26

发明人： Antonius Adrianus Cornelis Maria Kalker ,  Jeroen Jan Lambertus Horikx ,  Willem Marie Julia Marcel Coene

IPC分类号： H03M007/00 ,  H03M005/08

CPC分类号： G11B20/00884 ,  G11B20/00086 ,  G11B20/00586 ,  G11B20/1426 ,  G11B20/1496 ,  G11B20/18 ,  G11B20/1809

摘要： The invention relates to a method for encoding a stream of bits of a signal relating to a binary source into a stream of bits of a signal relating to a binary channel, the binary source comprising a main source and a secondary source, the main source being encoded in a main channel and the secondary source being encoded in a secondary channel, the secondary channel being embedded in the main channel in order to form the binary channel, wherein the binary channel is divided in blocks, each block comprising a number of user bits and that in at least one of the blocks the secondary channel also is used for encoding non-user bits. The invention further relates to an encoder to carry out this method, a decoder to decode the stream of bits relating to the binary channel and a record carrier provided with the encoded signal in the form of optically detectable marks. By means of the invention for example non-user data can be added that are used to prevent unauthorized copying.

摘要翻译： 本发明涉及一种用于将与二进制源有关的信号的比特流编码为与二进制信道有关的信号的比特流的方法，所述二进制源包括主源和次源，所述主源为 编码在主信道中，并且次源被编码在次信道中，次信道被嵌入在主信道中以形成二进制信道，其中二进制信道被划分为块，每个块包括多个用户比特 并且在至少一个块中，辅助信道也用于对非用户比特进行编码。 本发明还涉及一种用于执行该方法的编码器，用于解码与二进制信道相关的位流的解码器和以光学可检测标记的形式提供有编码信号的记录载体。 通过本发明，例如可以添加用于防止未授权复制的非用户数据。

公开(公告)号：US20040095264A1

公开(公告)日：2004-05-20

申请号：US10295628

申请日：2002-11-14

发明人： John Carl Thomas

IPC分类号： H03M005/08

CPC分类号： H02M3/1582 ,  H02M3/157 ,  H02M3/1584 ,  H02M3/33592 ,  H02M2001/0012 ,  H02M2001/0074 ,  H03M5/08 ,  Y02B70/1475

摘要： A control system and method for simultaneously regulating the operation of a plurality of different types of switching power converters. The system utilizes in regulating the power converters sampled data and nonlinear feedback control loops.

公开(公告)号：US20040090353A1

公开(公告)日：2004-05-13

申请号：US10294021

申请日：2002-11-12

发明人： Steven A. Moore

IPC分类号： H03M005/08

CPC分类号： H04B1/7163 ,  H03M5/08

摘要： An ultra-wideband pulse modulation apparatus, system and method is provided. The pulse modulation method increases the available bandwidth in an ultra-wideband, or impulse radio communications system. One embodiment of the present invention comprises a pulsed modulation system and method that employs a set of different pulse transmission, or emission rates to represent different groups of binary digits. The modulation and pulse transmission method of the present invention enables the simultaneous coexistence of the ultra-wideband pulses with conventional carrier-wave signals. The present invention may be used in wireless and wired communication networks such as CATV networks.