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1. 发明专利

JP2004062919A Optical disk recording power controller, control method of optical disk recording power and recording medium of optical disk recording power control program 审中-公开
标题翻译：光盘记录功率控制器，光盘记录功率的控制方法和光盘记录功率控制程序的记录介质
公开(公告)号：JP2004062919A
公开(公告)日：2004-02-26
申请号：JP2002215619
申请日：2002-07-24
申请人： Matsushita Electric Ind Co Ltd , 松下電器産業株式会社
发明人： INOUE TAKAO , OKAMOTO TOSHINORI
IPC分类号： G11B7/0045 , G11B7/007 , G11B7/125
摘要： PROBLEM TO BE SOLVED: To provide an optical disk recording power controller capable of accurately forming a pit also when the high dennsity and high speed recording operation are performed to the optical disk, a control method of the optical disk recording power and a recording medium of an optical disk recording power control program. SOLUTION: The controller is furnished with an arithmetic part 110 for calculating the driving amount for a laser beam and the separately prepared correction amount to make them to be the driving amount for a new laser beam. This arithmetic part 110 is constituted of a plurality of storage elements for storing the correction amount, a selector for selecting one from the plurality of storage elements by a specified selection signal, and an adder for adding the correction amount outputted by the selector and the driving amount for the inputted laser beam to output the added amount as the new laser beam driving amount. COPYRIGHT: (C)2004,JPO
摘要翻译：要解决的问题：为了提供一种能够在对光盘执行高精度和高速记录操作时也能够精确地形成凹坑的光盘记录功率控制器，光盘记录功率的控制方法和光盘记录功率控制程序的记录介质。解决方案：控制器配备有用于计算激光束的驱动量的运算部件110和单独准备的校正量，以使其成为新的激光束的驱动量。该运算部110由多个用于存储校正量的存储元件构成，用于通过指定的选择信号从多个存储元件中选择一个的选择器和用于将由选择器输出的校正量与驱动相加的加法器输入激光束的量作为新的激光束驱动量输出添加量。版权所有（C）2004，JPO

2. 发明专利

JP2005158011A Recording and reproducing device 审中-公开
标题翻译：记录和复制设备
公开(公告)号：JP2005158011A
公开(公告)日：2005-06-16
申请号：JP2004059690
申请日：2004-03-03
申请人： Matsushita Electric Ind Co Ltd , 松下電器産業株式会社
发明人： OKAMOTO TOSHINORI , KAWAMATA YASUTO , SATO SHINICHIRO , KOMURA KOJI , HOSOE YOSHINORI
IPC分类号： G06F12/14 , G06F3/06 , G11B20/10 , G11B20/12 , G11B27/00
摘要： PROBLEM TO BE SOLVED: To provide a recording and reproducing device capable of protecting copyrights of various data without using encryption of a mass storage medium to an HDD. SOLUTION: This device comprises a storage medium 6 for storing various pieces of information; a host controller part 5 for controlling the storage medium 6; a communication control part 4 for controlling communications between the host controller part 5 and the storage medium 6; and a reproduction processing part 7 for data stored in the storage medium 6. The storage medium 6 has a protective area 9 and a non-protective area 8. At the time of reproducing the data according to an instruction from the host controller part 5, the data are moved from the non-protective area 8 to the protective area 9, so that the data moved to the protective area 9 is not accessible from an external device. COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：提供一种能够保护各种数据的版权的记录和再现装置，而不需要将大容量存储介质加密到HDD。解决方案：该装置包括用于存储各种信息的存储介质6; 用于控制存储介质6的主机控制器部分5; 用于控制主机控制器部分5和存储介质6之间的通信的通信控制部分4; 以及用于存储在存储介质6中的数据的再现处理部分7.存储介质6具有保护区域9和非保护区域8.在根据主机控制器部分5的指令再现数据时，数据从非保护区域8移动到保护区域9，使得移动到保护区域9的数据不能从外部设备访问。版权所有（C）2005，JPO＆NCIPI

3. 发明专利

JP2000222824A ADAPTIVE EQUALIZING CIRCUIT 失效
公开(公告)号：JP2000222824A
公开(公告)日：2000-08-11
申请号：JP2542399
申请日：1999-02-02
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： OKAMOTO TOSHINORI , OGURA YOICHI
IPC分类号： G11B20/10 , G11B20/18 , H03H15/00 , H03H21/00 , H04B3/06 , H04L25/03 , H04L25/497
摘要： PROBLEM TO BE SOLVED: To improve characteristics of reproduction signals by carrying out high-degree partial response equalization to minimize an equalization error of input signals having a nonlinear distortion. SOLUTION: An input signal is processed by high-degree partial response equalization adapted to a nonlinear distortion waveform with use of a transversal filter 3. A temporary judge value for an equalization target value is estimated by a temporary judge circuit 4, and an error between the temporary judge value and the input signal is detected by an error detect circuit 5. An error between the temporary judge value and an output signal of an analog digital converter 1 is detected by an input distortion detect circuit 7. The error output from the error detect circuit 5 is monitored by an output distortion detect circuit 6. The equalization target value is controlled by an equalization target control means 8 to minimize an equalization error. A tap coefficient is controlled by a tap coefficient control means 10.

4. 发明专利

JP2001195754A TRACKING ERROR DETECTING DEVICE 失效
公开(公告)号：JP2001195754A
公开(公告)日：2001-07-19
申请号：JP2000004701
申请日：2000-01-13
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： OKAMOTO TOSHINORI
IPC分类号： G11B7/09
摘要： PROBLEM TO BE SOLVED: To provide a concrete means particularly realizing miniaturization and low power consumption of a circuit related to a tracking error detecting device for forming a tracking error signal and an offset signal for controlling tracking of an optical pickup in an optical recording/reproducing device. SOLUTION: A phase error detection means and a low-pass filter means for detecting the tracking error signal and the phase error detection means and the low-pass filter means for detecting the offset signal are shared, and the shared phase error detection means and the low-pass filter means are used in time division to detect the tracking error signal and the offset signal.

5. 发明专利

JP2001101799A DIGITAL REPRODUCTION SIGNAL PROCESSING UNIT 失效
公开(公告)号：JP2001101799A
公开(公告)日：2001-04-13
申请号：JP28128699
申请日：1999-10-01
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： MARUKAWA SHOJI , SATO SHINICHIRO , OKAMOTO TOSHINORI , ODA YOSHIMASA
IPC分类号： G11B20/10
摘要： PROBLEM TO BE SOLVED: To provide a digital reproduction signal processing unit at a low cost with low power consumption that can eliminate the need for an A/D converter 4 or a digital circuit operated at a channel rate even in the case that a digital read channel employing a PRML is realized. SOLUTION: The digital reproduction signal processing unit is provided with an A/D converter 4 that samples an analog reproduction signal for a period longer than a digital recording channel rate and converts the analog signal into a low rate digital reproduction for a period longer than the recording channel rate, a coefficient setting device 6 that applies digital filtering to the low rate digital reproduction signal without changing the low rate to generate a digital equalization signal, an interpolation unit 7 that interpolates the reproduced data at the digital recording channel rate, and a half rate Viterbi decoder 8 that outputs data.

6. 发明专利

JP2001067690A TRACKING ERROR DETECTING DEVICE 失效
公开(公告)号：JP2001067690A
公开(公告)日：2001-03-16
申请号：JP24361899
申请日：1999-08-30
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： HIRATSUKA TAKASHIGE , MARUKAWA SHOJI , OKAMOTO TOSHINORI
IPC分类号： G11B7/09
摘要： PROBLEM TO BE SOLVED: To provide a small-sized tracking error detecting device capable of coping with the double speed of an optical recording and reproducing device and the high density of an optical recording medium at a low cost. SOLUTION: Two signal series are generated by converting photoelectric currents obtained by photodetectors into voltage signals with current-voltage converters 7a to 7d and by adding the voltage signals with adders 8a, 8b. These two signal sieries are digitized respectively in ADCs 16a, 16b to be subjected to interpolation processings in interpolation filters 17a, 17b and zero crossing points are detected by zero crossing point detecting circuits 18a, 18b. Then, a tracking error signal is obtained by detecting the phase difference between the zero crossing points of the two signal series in a phase detecting circuit 19 and by applying a band limitation to the phase difference by an LPF 11.

7. 发明专利

JP2001243643A DEVICE FOR DETECTING TRACKING ERROR 失效
公开(公告)号：JP2001243643A
公开(公告)日：2001-09-07
申请号：JP2000050013
申请日：2000-02-25
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： HIRATSUKA TAKASHIGE , OKAMOTO TOSHINORI
IPC分类号： G11B7/085 , G11B7/09
摘要： PROBLEM TO BE SOLVED: To provide a tracking error detection device capable of obtaining a stable tracking error signal with respect to the change of an operation mode in an optical recording and reproducing device in the case of generating a tracking error signal by a phase difference method based on a digital system. SOLUTION: In a tracking error signal generation system based on a phase difference method, analog-to-digital converters(ADC) 16a and 16b, interpolation filters 17a and 17b, zero cross point detection circuits 18a and 18b, an phase difference detection circuit 19 and a lowpass filter 11 are provided. A read channel part 22 which is provided with an analog-to-digital converter(ADC) 23, a phase comparator 24, a loop filter 25, a digital-to-analog converter(DAC) 26 and a voltage-controlled oscillator(VCO) 27 reads data from an information pit of an information recording medium and generates an operation clock of a digital signal processing part 20 generating the tracking signal.

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