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

CN1054937C 一种数字信号记录器/还原器的调制/解调电路失效
公开(公告)号：CN1054937C
公开(公告)日：2000-07-26
申请号：CN94116511.6
申请日：1994-09-28
申请人：三星电子株式会社
发明人：金洵泰
IPC分类号： G11B20/06
CPC分类号： G11B20/10 , G11B20/1496 , H04L27/362
摘要：数字信号记录器/还原器的调制/解调电路包括第一和第二高通滤波器，载波信号发生器，调制器，导波信号发生器，载波恢复电路，解调器，第一和第二检波器，第三和第四检波器，第五检波器，它们一起提高了恢复载波信号的精确度及电路的功效。

2. 发明授权

CN100573688C 错误修正装置及光盘装置失效
公开(公告)号：CN100573688C
公开(公告)日：2009-12-23
申请号：CN200510084757.4
申请日：2005-07-20
申请人：蒂雅克股份有限公司
发明人：真下著明
IPC分类号： G11B20/06 , G11B20/18 , G11B7/00
CPC分类号： G11B20/1833 , G11B7/0053
摘要：本发明的目的是在HD-DVD等之中，施行地址信息的错误修正。本发明的光盘装置，是在HD-DVD的光盘以同相位的4个波的颤动波埋入地址信息。用光拾取头16检测颤动信号，在地址解码电路28将颤动信号解调。地址解码电路28检测颤动波的相位差量。系统控制器32对相位差量超过既定范围的位设定错误标志，在依据CRC等判定了读取错误的情况置换设定有错误标志的位，进行错误修正。

3. 发明公开

CN1734626A 错误修正装置及光盘装置失效
公开(公告)号：CN1734626A
公开(公告)日：2006-02-15
申请号：CN200510084757.4
申请日：2005-07-20
申请人：蒂雅克股份有限公司
发明人：真下著明
IPC分类号： G11B20/06 , G11B20/18 , G11B7/00
CPC分类号： G11B20/1833 , G11B7/0053
摘要：本发明的目的是在HD－DVD等之中，施行地址信息的错误修正。本发明的光盘装置，是在HD－DVD的光盘以同相位的4个波的颤动波埋入地址信息。用光拾取头16检测颤动信号，在地址解码电路28将颤动信号解调。地址解码电路28检测颤动波的相位差量。系统控制器32对相位差量超过既定范围的位设定错误标志，在依据CRC等判定了读取错误的情况置换设定有错误标志的位，进行错误修正。

4. 发明公开

CN1088339A 磁记录重放装置无效
公开(公告)号：CN1088339A
公开(公告)日：1994-06-22
申请号：CN93114472.8
申请日：1993-11-12
申请人：株式会社日立制作所
发明人：矢次富美繁 , 渡边克行
IPC分类号： G11B5/02 , G11B20/06
摘要：本发明涉及提高重放图像质量的VTR磁记录重放装置，通过使该装置均衡器的延迟线长度改变，可依重放信号控制其峰值频率。反馈电路和下边带成分加法电路，可依重放信号的振幅分别控制电路的系数。还依不同模式改变其控制灵敏度。依重放信号振幅控制的峰值频率，使重放信号电平小于标准值的磁带在重放时也能有足够的反转富余量；在均衡器中设有反馈电路，可实现最佳的均衡特性；由下边带加法电路，改善高输出功率磁带析像清晰度。

5. 发明授权

EP0351845B1 FM audio record reproducing apparatus 失效
标题翻译：为FM音频信号再现装置。
公开(公告)号：EP0351845B1
公开(公告)日：1994-11-30
申请号：EP89113340.7
申请日：1989-07-20
申请人： AKAI ELECTRIC CO., LTD.
发明人： Matsuoka, Hideo c/o Akai Electric Co., Ltd.
IPC分类号： G11B20/06 , G11B20/02
CPC分类号： G11B20/06 , G11B20/02

6. 发明公开

EP0351845A2 FM audio record reproducing apparatus 失效
标题翻译： WiedergabegerätfürFM-Audio-Signale。
公开(公告)号：EP0351845A2
公开(公告)日：1990-01-24
申请号：EP89113340.7
申请日：1989-07-20
申请人： AKAI ELECTRIC CO., LTD.
发明人： Matsuoka, Hideo c/o Akai Electric Co., Ltd.
IPC分类号： G11B20/06 , G11B20/02
CPC分类号： G11B20/06 , G11B20/02
摘要： A reproducing apparatus which is provided with: frequency converting means (21) for performing frequency conversion of the FM regenerative signals respectively from the read heads, on the basis of frequency conversion signals each having a frequency different from the frequency of the carrier; voltage-controlled oscillators (22) for generating the frequency conversion signals, respectively; phase comparators (23) for comparing phases of two FM regenerative signals frequency-converted by the frequency converting means (21) in the overlap period so as to produce a difference signal corresponding to the difference between the phases; switching circuits (25) for feeding the difference signal generated by the phase comparators (23), into one of the voltage-controlled osciallators (22) generating the frequency conversion signal for frequency conversion of succeedingly reproduced one of the FM regenerative signals in the overlap period; and loop filters (24) for stabilizing a loop system constituted by the aforementioned parts; whereby the phases of two frequency-changed FM regenerative signals are made to coincide with each other before the switching of the output in the overlap period.
摘要翻译：一种再生装置，具备：频率转换装置，用于根据每个具有与载波频率不同的频率的频率转换信号，分别从读出头执行FM再现信号的频率转换; 压控振荡器（22），用于分别产生频率转换信号; 相位比较器（23），用于比较在所述重叠周期中由所述频率转换装置（21）频率转换的两个FM再生信号的相位，以便产生与所述相位之间的差相对应的差分信号; 用于将由相位比较器（23）产生的差分信号馈送到产生用于频率转换的频率转换信号的压控奥斯卡拉尔（22）之一的开关电路（25），用于在重叠中再现的一个FM再生信号期; 以及用于稳定由上述部件构成的环路系统的环路滤波器（24）由此，在重叠期间的输出切换之前，使两个频率变化的FM再生信号的相位彼此一致。

7. 发明公开

EP0312266A2 Apparatus for reproducing recorded information with cross modulation suppression 失效
标题翻译： Gerätzur Wiedergabe von aufgezeichneten Informationen mitKreuzmodulationsunterdrückung。
公开(公告)号：EP0312266A2
公开(公告)日：1989-04-19
申请号：EP88309390.8
申请日：1988-10-07
申请人： PIONEER ELECTRONIC CORPORATION
发明人： Senso, Hitoshi c/o Pioneer
IPC分类号： H04N5/91 , G11B20/06 , G11B5/012 , H04N5/781
CPC分类号： H04N5/911 , G11B20/06 , G11B20/22 , H04N9/802
摘要： Apparatus for reproducing recorded information on a video disk (1), the recorded information including an FM signal containing video information, an EFM signal containing audio signals and cross modulation components of the FM and EFM signals within the bandwidth of the video signal. The apparatus includes cross modulation suppressing circuitry (4) consisting of an amplifier with a gain which decreases at frequencies equal to the frequency components of the cross modulation components falling within the frequency band of the FM video signal. In this way the cross modulation components are suppressed without suppressing the FM signal, thereby preventing the cross modulation components from interfering with the FM signal.
摘要翻译：用于在视频盘（1）上再现记录信息的装置，记录的信息包括视频信号的FM信号，包含音频信号的EFM信号和视频信号的带宽内的FM和EFM信号的交叉调制分量。该装置包括交叉调制抑制电路（4），该交叉调制抑制电路（4）由具有等于在FM视频信号的频带内的交叉调制分量的频率分量的频率减小的放大器组成。以这种方式，在不抑制FM信号的情况下抑制交叉调制分量，从而防止交叉调制分量干扰FM信号。

8. 发明授权

EP0312266B1 Apparatus for reproducing recorded information with cross modulation suppression 失效
标题翻译：装置，用于再现与交叉调制抑制记录的信息。
公开(公告)号：EP0312266B1
公开(公告)日：1993-12-29
申请号：EP88309390.8
申请日：1988-10-07
申请人： PIONEER ELECTRONIC CORPORATION
发明人： Senso, Hitoshi c/o Pioneer
IPC分类号： H04N5/91 , G11B20/06 , G11B5/012 , H04N5/781
CPC分类号： H04N5/911 , G11B20/06 , G11B20/22 , H04N9/802

9. 发明授权

EP0419680B1 FREQUENCY MODULATOR 失效
标题翻译： FREQUENZMODULATOR。
公开(公告)号：EP0419680B1
公开(公告)日：1993-11-24
申请号：EP90905677.2
申请日：1990-04-06
申请人： SHARP KABUSHIKI KAISHA
发明人： HIRAMATSU, Yonejirou , SATOU, Shun-ichi
IPC分类号： H03C3/00 , G11B20/06
CPC分类号： G11B20/06 , H03C3/00
摘要： A frequency-modulated signal is digitally integrated through an integration circuit (20) and is phase-modulated through a phase-modulating circuit (30). The modulated signal that is integrated is converted through the phase-modulating circuit (30) into first and second digital modulated signals whose phases are orthogonal to each other. Further, a carrier signal from a carrier signal generating circuit (40) is converted into first and second carrier signals whose phases are also orthogonal to each other. The first digital modulated signal is multiplied by the first carrier signal through a D/A converter (35); the second digital modulated signal is multiplied by the second carrier signal through a D/A converter (36). The two resultant signals are outputted as analog signals, and are added to each other through an adder (37), thereby to output a frequency-modulated signal. Because of the digital processing, the frequency modulator can have exellent linear characteristics, little harmonic distortion, and high reliability.

10. 发明公开

EP0351845A3 FM audio record reproducing apparatus 失效
标题翻译： FM音频录音机
公开(公告)号：EP0351845A3
公开(公告)日：1991-08-14
申请号：EP89113340.7
申请日：1989-07-20
申请人： AKAI ELECTRIC CO., LTD.
发明人： Matsuoka, Hideo c/o Akai Electric Co., Ltd.
IPC分类号： G11B20/06 , G11B20/02
CPC分类号： G11B20/06 , G11B20/02
摘要： A reproducing apparatus which is provided with: frequency converting means (21) for performing frequency conversion of the FM regenerative signals respectively from the read heads, on the basis of frequency conversion signals each having a frequency different from the frequency of the carrier; voltage-controlled oscillators (22) for generating the frequency conversion signals, respectively; phase comparators (23) for comparing phases of two FM regenerative signals frequency-converted by the frequency converting means (21) in the overlap period so as to produce a difference signal corresponding to the difference between the phases; switching circuits (25) for feeding the difference signal generated by the phase comparators (23), into one of the voltage-controlled osciallators (22) generating the frequency conversion signal for frequency conversion of succeedingly reproduced one of the FM regenerative signals in the overlap period; and loop filters (24) for stabilizing a loop system constituted by the aforementioned parts; whereby the phases of two frequency-changed FM regenerative signals are made to coincide with each other before the switching of the output in the overlap period.

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