公开(公告)号：US07423561B2

公开(公告)日：2008-09-09

申请号：US11758655

申请日：2007-06-05

申请人： Hsin-Cheng Chen ,  Pi-Hai Liu ,  Ming-Yang Chao

发明人： Hsin-Cheng Chen ,  Pi-Hai Liu ,  Ming-Yang Chao

IPC分类号： H03M7/00

CPC分类号： G11B20/1426 ,  G11B2020/1442 ,  G11B2020/1457 ,  G11B2220/2541 ,  G11B2220/2579 ,  H03M5/145

摘要： A modulation method for symbols in a frame of a compact disc includes the steps of receiving a plurality of data words, modulating each data word into a code word of a corresponding data symbol, and providing a plurality of combinations of potential merge bits to be inserted between successive symbols of the frame. At least one combination of candidate merge bits is generated according to the plurality of combinations of potential merge bits, a data symbol immediately preceding the location of the candidate merge bits, and a data symbol immediately succeeding the location of the candidate merge bits. The combination of candidate merge bits which minimizes (optimizes) the absolute cumulative DSV is selected when a subsequent group of possible combinations of candidate merge bits is detected or after a predetermined delay, and the selected combination of candidate merge bits is inserted between the two successive data symbols.

摘要翻译： 在光盘的帧中的符号的调制方法包括以下步骤：接收多个数据字，将每个数据字调制成相应数据符号的码字，并提供要插入的潜在合并位的多个组合 在帧的连续符号之间。 根据潜在的合并位，候选合并位的位置之前的数据符号以及候选合并位的位置之后的数据符号的多个组合，生成候选合并位的至少一个组合。 当检测到候选合并比特的可能组合的后续组或者在预定的延迟之后，选择最小化（优化）绝对累积DSV的候选合并比特的组合，并且将所选择的候选合并比特的组合插入在两个连续的 数据符号。

公开(公告)号：US07348900B1

公开(公告)日：2008-03-25

申请号：US11308095

申请日：2006-03-07

申请人： Pi-Hai Liu ,  Ming-Yang Chao ,  Jin-Bin Yang

发明人： Pi-Hai Liu ,  Ming-Yang Chao ,  Jin-Bin Yang

IPC分类号： H03M5/00

CPC分类号： H03M5/145 ,  G11B20/10 ,  H03M7/14

摘要： A modulation method for a first data string having a plurality of symbols is disclosed. The method includes: appending a data string to the first data string to form a second data string; and converting the second data string to a code word sequence by converting each of the symbols in the first data string to a code word according to predetermined modulation rules and a symbol set selected from the second data string. Each code word has a first fixed number of bits, each symbol has a second fixed number of bits, and each symbol set has a fixed number of symbols.

摘要翻译： 公开了一种具有多个符号的第一数据串的调制方法。 该方法包括：将数据串附加到第一数据串以形成第二数据串; 以及通过根据预定的调制规则和从第二数据串中选择的符号集将第一数据串中的每个符号转换为码字，将第二数据串转换为码字序列。 每个码字具有第一固定数量的比特，每个符号具有第二固定数量的比特，并且每个符号集具有固定数目的符号。

公开(公告)号：US20050265182A1

公开(公告)日：2005-12-01

申请号：US11092765

申请日：2005-03-30

申请人： Yuan-Chin Liu ,  Ming-Yang Chao

发明人： Yuan-Chin Liu ,  Ming-Yang Chao

IPC分类号： G11B5/09 ,  G11B7/00 ,  G11B7/005 ,  G11B7/125

CPC分类号： G11B7/1267 ,  G11B7/0053

摘要： In a method and apparatus for generating optimum write power, a control unit controls a write voltage generating unit to generate sequentially write voltages of different levels to drive an optical read/write head to generate different write powers so as to write data on a plurality of write intervals of an optical recording medium in sequence. Simultaneously, a detecting and computing circuit detects a peak value, a first level and a second level of a write reflected signal generated by each write interval for computation so as to obtain a first control parameter of each write interval, and detects a peak value, a bottom value and a direct current level of a read reflected signal generated during reading of each write interval for computation so as to obtain a second control parameter of each write interval, thereby generating an optimum write power based on optimal first and control parameters.

摘要翻译： 在用于产生最佳写入功率的方法和装置中，控制单元控制写入电压产生单元以产生不同电平的顺序写入电压以驱动光学读取/写入头以产生不同的写入功率，以便将数据写入多个 依次写入光学记录介质的间隔。 同时，检测和计算电路检测由用于计算的每个写入间隔产生的写入反射信号的峰值，第一电平和第二电平，以便获得每个写入间隔的第一控制参数，并且检测峰值， 在读取每个写入间隔期间产生的读取反射信号的底部值和直流电平进行计算，以便获得每个写入间隔的第二控制参数，从而基于最佳第一和控制参数产生最佳写入功率。