公开(公告)号：US07508741B2

公开(公告)日：2009-03-24

申请号：US11641886

申请日：2006-12-20

申请人： Yukio Iijima ,  Nobuaki Minakuchi ,  Hidemi Takahashi ,  Yasushi Ueda ,  Makoto Okazaki

发明人： Yukio Iijima ,  Nobuaki Minakuchi ,  Hidemi Takahashi ,  Yasushi Ueda ,  Makoto Okazaki

IPC分类号： G11B15/02

CPC分类号： G11B19/04 ,  G11B7/0037 ,  G11B7/0053 ,  G11B7/00745 ,  G11B19/122 ,  G11B20/10 ,  G11B20/10009 ,  G11B20/10222 ,  G11B20/1403 ,  G11B20/1426 ,  G11B27/19 ,  G11B27/24 ,  G11B27/3027 ,  G11B2020/10888 ,  G11B2020/1269 ,  G11B2020/1274 ,  G11B2220/20 ,  G11B2220/2537

摘要： An optical disc recording and reproducing apparatus for recording and reproducing data in and from an optical disc by the use of the optical disc as a recording medium, comprises analog processing means including a binarization unit for subjecting a signal read from the optical disc to binarization and a servo unit for controlling recording and reproducing a signal in and from the optical disc; synchronous clock generating means for generating a synchronous clock signal which is synchronized with the signal read from the optical disc; address detecting means for detecting address information indicating a physical position on the optical disc based on the signal read from the optical disc, and outputting a signal indicating the address information and a signal indicating that the address has been detected when the address information has been detected; a sector counter for holding a sector count value of a sector as a recording unit on the optical disc, and updating the sector count value according to the synchronous clock signal and the signal output from the address detecting means; and gate signal generation switching means for generating gate a signal which controls the analog processing means, based on one of the sector count value held in the sector counter and information obtained from the analog processing means, according to the signal indicating that the address has been detected, which is output from the address detecting means.

摘要翻译： 一种用于通过使用光盘作为记录介质来记录和从光盘再现数据的光盘记录和再现装置，包括模拟处理装置，包括用于对从光盘读取的信号进行二值化的二值化单元，以及 用于控制在光盘中记录和再现信号的伺服单元; 同步时钟发生装置，用于产生与从光盘读取的信号同步的同步时钟信号; 地址检测装置，用于基于从光盘读取的信号检测表示光盘上的物理位置的地址信息，并且当检测到地址信息时，输出指示地址信息的信号和指示已经检测到地址的信号 ; 用于将光盘的扇区计数值保持为记录单位的扇区计数器，并根据同步时钟信号和从地址检测装置输出的信号来更新扇区计数值; 以及门信号产生切换装置，用于根据表示地址已经被信号的信号，基于扇区计数器中保存的扇区计数值和从模拟处理装置获得的信息，产生控制模拟处理装置的信号 从地址检测装置输出。

公开(公告)号：US20080037388A1

公开(公告)日：2008-02-14

申请号：US11798713

申请日：2007-05-16

申请人： Yukio Iijima ,  Nobuaki Minakuchi ,  Hidemi Takahashi ,  Yasushi Ueda ,  Makoto Okazaki

发明人： Yukio Iijima ,  Nobuaki Minakuchi ,  Hidemi Takahashi ,  Yasushi Ueda ,  Makoto Okazaki

IPC分类号： G11B7/00

CPC分类号： G11B19/04 ,  G11B7/0037 ,  G11B7/0053 ,  G11B7/00745 ,  G11B19/122 ,  G11B20/10 ,  G11B20/10009 ,  G11B20/10222 ,  G11B20/1403 ,  G11B20/1426 ,  G11B27/19 ,  G11B27/24 ,  G11B27/3027 ,  G11B2020/10888 ,  G11B2020/1269 ,  G11B2020/1274 ,  G11B2220/20 ,  G11B2220/2537

摘要： An optical disc recording and reproducing apparatus for recording and reproducing data in and from an optical disc by the use of the optical disc as a recording medium, comprises analog processing means including a binarization unit for subjecting a signal read from the optical disc to binarization and a servo unit for controlling recording and reproducing a signal in and from the optical disc; synchronous clock generating means for generating a synchronous clock signal which is synchronized with the signal read from the optical disc; address detecting means for detecting address information indicating a physical position on the optical disc based on the signal read from the optical disc, and outputting a signal indicating the address information and a signal indicating that the address has been detected when the address information has been detected; a sector counter for holding a sector count value of a sector as a recording unit on the optical disc, and updating the sector count value according to the synchronous clock signal and the signal output from the address detecting means; and gate signal generation switching means for generating gate a signal which controls the analog processing means, based on one of the sector count value held in the sector counter and information obtained from the analog processing means, according to the signal indicating that the address has been detected, which is output from the address detecting means.

摘要翻译： 一种用于通过使用光盘作为记录介质来记录和从光盘再现数据的光盘记录和再现装置，包括模拟处理装置，包括用于对从光盘读取的信号进行二值化的二值化单元，以及 用于控制在光盘中记录和再现信号的伺服单元; 同步时钟发生装置，用于产生与从光盘读取的信号同步的同步时钟信号; 地址检测装置，用于基于从光盘读取的信号检测表示光盘上的物理位置的地址信息，并且当检测到地址信息时，输出指示地址信息的信号和指示已经检测到地址的信号 ; 用于将光盘的扇区计数值保持为记录单位的扇区计数器，并根据同步时钟信号和从地址检测装置输出的信号来更新扇区计数值; 以及门信号产生切换装置，用于根据表示地址已经被信号的信号，基于扇区计数器中保存的扇区计数值和从模拟处理装置获得的信息，产生控制模拟处理装置的信号 从地址检测装置输出。

公开(公告)号：US07292510B2

公开(公告)日：2007-11-06

申请号：US11035272

申请日：2005-01-14

申请人： Yukio Iijima ,  Nobuaki Minakuchi ,  Hidemi Takahashi ,  Yasushi Ueda ,  Makoto Okazaki

发明人： Yukio Iijima ,  Nobuaki Minakuchi ,  Hidemi Takahashi ,  Yasushi Ueda ,  Makoto Okazaki

IPC分类号： G11B7/00

CPC分类号： G11B19/04 ,  G11B7/0037 ,  G11B7/0053 ,  G11B7/00745 ,  G11B19/122 ,  G11B20/10 ,  G11B20/10009 ,  G11B20/10222 ,  G11B20/1403 ,  G11B20/1426 ,  G11B27/19 ,  G11B27/24 ,  G11B27/3027 ,  G11B2020/10888 ,  G11B2020/1269 ,  G11B2020/1274 ,  G11B2220/20 ,  G11B2220/2537

摘要： An optical disc recording and reproducing apparatus for recording and reproducing data in and from an optical disc by the use of the optical disc as a recording medium, comprises analog processing means including a binarization unit for subjecting a signal read from the optical disc to binarization and a servo unit for controlling recording and reproducing a signal in and from the optical disc; synchronous clock generating means for generating a synchronous clock signal which is synchronized with the signal read from the optical disc; address detecting means for detecting address information indicating a physical position on the optical disc based on the signal read from the optical disc, and outputting a signal indicating the address information and a signal indicating that the address has been detected when the address information has been detected; a sector counter for holding a sector count value of a sector as a recording unit on the optical disc, and updating the sector count value according to the synchronous clock signal and the signal output from the address detecting means; and gate signal generation switching means for generating gate a signal which controls the analog processing means, based on one of the sector count value held in the sector counter and information obtained from the analog processing means, according to the signal indicating that the address has been detected, which is output from the address detecting means.

公开(公告)号：US06573763B2

公开(公告)日：2003-06-03

申请号：US10141777

申请日：2002-05-10

申请人： Yukio Iijima

发明人： Yukio Iijima

IPC分类号： H03B2100

CPC分类号： G06F1/02 ,  G11B20/10194 ,  H04L7/0037 ,  H04L7/0338

摘要： A waveform generation apparatus comprises a delay circuit comprising i pieces of unit delay circuits connected in series, and providing i kinds of delay states by deriving signals from the respective unit delay circuits; k pieces of selection circuits each selecting one delay state from among the i kinds of delay states; a waveform generation circuit for generating n pieces of binary state signals in the same state, or generating n pieces of binary-state signals having a shape according to recording data supplied from the outside, on the basis of the signals having the i kinds of delay states; a transmission path for transmitting the n pieces of binary-state signals generated by the waveform generation circuit; a waveform synthesis circuit for generating a signal having multi-valued information from the n pieces of binary-state signals transmitted through the transmission path; a phase difference detection circuit for detecting phase differences among the n pieces of binary-state signals in the same state, when the n pieces of binary-state signals in the same state are transmitted through the transmission path; and an offset control circuit for controlling the k pieces of selection circuit on the basis of phase difference information from the phase difference detection circuit, and adding offset values to target delays, thereby to eliminate the phase differences among the signals in the transmission circuit.