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1. 发明授权

US5559461A Drive circuit detecting slow signal transition 失效
标题翻译：驱动电路检测慢信号转换
公开(公告)号：US5559461A
公开(公告)日：1996-09-24
申请号：US495032
申请日：1995-06-27
申请人： Masakazu Yamashina , Youichi Koseki , Masayuki Mizuno
发明人： Masakazu Yamashina , Youichi Koseki , Masayuki Mizuno
IPC分类号： H03K19/0175 , H03K5/1534 , H03K17/16 , H03K5/22
CPC分类号： H03K5/1534
摘要： A drive circuit includes first and second circuit sections. The first circuit section maintains, during an initial stage of a transient period of an input signal, its output level before the signal transition and supplies after the transient period an output signal responsive to the signal transition. The second circuit section has a first circuit portion receiving the input signal and a second circuit portion, responsive to the input signal, and the output of the first circuit section, to accelerate the signal transition of the first circuit portion. Signal delay in a signal transition due to a large parasitic capacitance and resistance can be recovered by the drive circuit. The drive circuit has a large noise margin and operates at a high-speed and in a wide frequency range.
摘要翻译：驱动电路包括第一和第二电路部分。第一电路部分在输入信号的瞬态周期的初始阶段保持其在信号转换之前的输出电平，并且在瞬变周期之后提供响应于信号转换的输出信号。第二电路部分具有接收输入信号的第一电路部分和响应于输入信号的第二电路部分和第一电路部分的输出，以加速第一电路部分的信号转换。由于寄生电容和电阻大而导致的信号转换信号延迟可以由驱动电路恢复。驱动电路具有较大的噪声容限，并在高速和宽频率范围内工作。

2. 发明授权

US07343544B2 Optical disk playback apparatus and data playback method therefor 有权
标题翻译：光盘播放装置及其数据播放方法
公开(公告)号：US07343544B2
公开(公告)日：2008-03-11
申请号：US10626518
申请日：2003-07-25
申请人： Youichi Koseki
发明人： Youichi Koseki
IPC分类号： G11C29/00
CPC分类号： G11B20/1403 , G11B7/0053 , G11B20/10527 , G11B27/3063 , G11B2020/1062 , G11B2220/2545
摘要： An optical disk playback apparatus for playing back or reproducing main data and its associated sub-code which are read from an optical recording medium comprises an interleave RAM for storing the main data. The optical disk playback apparatus performs a predefined synchronization protection on synchronization information included in the sub-code to generate a sub-code synchronization signal which is written into an empty area of the interleave RAM, and manages the addresses with a FIFO area in a manner similar to the main data, thereby causing the read sub-code synchronization signal to function in synchronization with the main data.
摘要翻译：用于播放或再现从光记录介质读取的主数据及其相关子代码的光盘播放装置包括用于存储主数据的交错RAM。光盘播放装置对包含在子代码中的同步信息执行预定义的同步保护，生成被写入交织RAM的空白区域的子代码同步信号，并以FIFO区域的方式管理地址与主数据类似，从而使读取的子代码同步信号与主数据同步地工作。

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