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1. 发明授权

US06891785B2 Optical disc reproduction apparatus 失效
标题翻译：光盘再现装置
公开(公告)号：US06891785B2
公开(公告)日：2005-05-10
申请号：US10153215
申请日：2002-05-21
申请人： Takeharu Yamamoto , Takashi Kishimoto , Yoshihiro Kanda , Hiroyuki Yamaguchi
发明人： Takeharu Yamamoto , Takashi Kishimoto , Yoshihiro Kanda , Hiroyuki Yamaguchi
IPC分类号： G11B7/0037 , G11B7/007 , G11B20/14 , G11B20/18 , G11B27/19 , G11B27/22 , G11B27/24 , G11B27/26 , H03L7/08 , G11B7/00
CPC分类号： G11B27/24 , G11B7/00375 , G11B7/00745 , G11B20/1403 , G11B20/1883 , G11B20/1889 , G11B27/19 , G11B27/22 , G11B27/26 , G11B2220/20 , H03L7/08
摘要： An optical disc reproduction apparatus includes a sector detection section for detecting a sector; a sector reproduction time measuring section for measuring a reproduction time of the sector, and outputting sector reproduction time data which represents the measured reproduction time of the sector; an unrecorded portion detection section for detecting an unrecorded portion which is a portion of the sector in which no data is recorded; an unrecorded portion time measuring section for measuring a reproduction time of the unrecorded portion, and outputting unrecorded portion time data which represents the measured reproduction time of the unrecorded portion; and a sector determination section for determining whether the sector is an unrecorded sector or not, based on a relationship between the sector reproduction time data and the unrecorded portion time data, the unrecorded sector being a sector which is in an unrecorded state.
摘要翻译：光盘再现装置包括用于检测扇区的扇区检测部分; 扇区再现时间测量部分，用于测量扇区的再现时间，并输出表示所测量的扇区再现时间的扇区再现时间数据; 未记录部分检测部分，用于检测作为不记录数据的扇区的一部分的未记录部分; 未记录部分时间测量部分，用于测量未记录部分的再现时间，并输出表示未记录部分的测量再现时间的未记录部分时间数据; 以及扇区确定部分，用于基于扇区再现时间数据和未记录部分时间数据之间的关系来确定扇区是否是未记录扇区，未记录扇区是处于未记录状态的扇区。

2. 发明授权

US06925037B2 Optical disc drive and optical disc controller 失效
标题翻译：光盘驱动器和光盘控制器
公开(公告)号：US06925037B2
公开(公告)日：2005-08-02
申请号：US10386612
申请日：2003-03-12
申请人： Takashi Kishimoto , Takeharu Yamamoto , Yoshihiro Kanda , Jun Kikuchi
发明人： Takashi Kishimoto , Takeharu Yamamoto , Yoshihiro Kanda , Jun Kikuchi
IPC分类号： G11B7/085 , G11B7/00
CPC分类号： G11B7/08529 , G11B7/08541
摘要： An optical disc drive includes: an optical head with an actuator and a photodetector; a tracking driver outputting a drive signal to the actuator; a first tracking error signal generator for generating a first tracking error signal based on an output signal of the photodetector; first and second lens position control sections for respectively outputting first and second lens position control signals to the tracking driver; and a selector for selectively supplying the first tracking error signal to the first or second lens position control section according to a moving velocity of the optical head during a seek operation. The first lens position control signal is obtained by extracting signal components, of which the frequencies are equal to or lower than a predetermined frequency, from the first tracking error signal. The second lens position control signal is obtained by extracting DC components of the first tracking error signal at on-track points thereof.
摘要翻译：光盘驱动器包括：具有致动器和光电检测器的光学头; 向所述致动器输出驱动信号的跟踪驱动器; 第一跟踪误差信号发生器，用于基于光电检测器的输出信号产生第一跟踪误差信号; 第一和第二透镜位置控制部分，用于分别向跟踪驱动器输出第一和第二透镜位置控制信号; 以及选择器，用于根据拾取操作期间光头的移动速度，选择性地将第一跟踪误差信号提供给第一或第二透镜位置控制部。通过从第一跟踪误差信号中提取频率等于或低于预定频率的信号分量来获得第一透镜位置控制信号。第二透镜位置控制信号通过在其轨迹点上提取第一跟踪误差信号的DC分量来获得。

3. 发明授权

US07193941B2 Optical disc drive with clock synchronization and rotational speed detection 失效
标题翻译：具有时钟同步和转速检测的光盘驱动器
公开(公告)号：US07193941B2
公开(公告)日：2007-03-20
申请号：US10401449
申请日：2003-03-28
申请人： Takeharu Yamamoto , Yoshihiro Kanda , Takashi Kishimoto , Rie Takahashi , Tetsuya Shihara
发明人： Takeharu Yamamoto , Yoshihiro Kanda , Takashi Kishimoto , Rie Takahashi , Tetsuya Shihara
IPC分类号： G11B27/10
CPC分类号： G11B7/0053 , G11B7/08517 , G11B19/28 , G11B20/10 , G11B20/1258 , G11B27/24 , G11B2020/10916 , G11B2020/1239 , G11B2020/1267 , G11B2020/1287 , G11B2020/1288 , G11B2220/216 , G11B2220/2537 , G11B2220/2541 , G11B2220/2562 , G11B2220/2575
摘要： An optical disc drive includes: a motor for rotating an optical disc thereon; a photoelectric transducer for converting a light beam, reflected from or transmitted through the disc, into an electric signal; a clock sync signal reader for extracting and outputting a read signal, representing a clock synchronization mark, from the electric signal; a clock generator for generating a clock signal having a variable frequency; a phase locking controller for controlling the clock generator to synchronize the clock signal in phase with the output signal of the clock sync signal reader; and a mechanism for displacing a light beam spot toward a target track on the disc. During a seek operation of displacing the light beam spot toward the target track, the clock generator is controlled to obtain a frequency to be expected on the target track and output a clock signal having the expected frequency.
摘要翻译：光盘驱动器包括：用于在其上旋转光盘的马达; 用于将从光盘反射或透过光盘的光束转换为电信号的光电传感器; 时钟同步信号读取器，用于从电信号中提取并输出表示时钟同步标记的读取信号; 时钟发生器，用于产生具有可变频率的时钟信号; 相位锁定控制器，用于控制时钟发生器，使时钟信号同步于时钟同步信号读取器的输出信号; 以及用于将光束点移向盘上的目标轨道的机构。在将光束点移向目标轨道的寻道操作期间，控制时钟发生器以获得目标轨道上预期的频率并输出具有预期频率的时钟信号。

4. 发明授权

US06961301B2 Optical disk having synchronization region formed between pre-recorded area and recordable area 有权
标题翻译：具有在预记录区域和可记录区域之间形成的同步区域的光盘
公开(公告)号：US06961301B2
公开(公告)日：2005-11-01
申请号：US10221682
申请日：2001-03-28
申请人： Takeharu Yamamoto , Yoshihiro Kanda , Hiroyuki Yamaguchi , Shinji Inoue
发明人： Takeharu Yamamoto , Yoshihiro Kanda , Hiroyuki Yamaguchi , Shinji Inoue
IPC分类号： G11B7/24 , G11B7/0045 , G11B7/0055 , G11B7/007 , G11B7/09 , G11B20/14 , G11B27/19 , G11B27/24 , G11B27/30 , G11B27/32
CPC分类号： G11B27/3027 , G11B7/00736 , G11B7/0079 , G11B7/0906 , G11B20/1403 , G11B27/24 , G11B27/329 , G11B2220/216 , G11B2220/218 , G11B2220/2562
摘要： An optical disk of the present invention includes a pre-recorded region in which pre-recorded data is recorded; a recordable region in which a first clock synchronization mark and first address information are recorded; and a synchronization region having a prescribed length which is positioned between the pre-recorded region and the recordable region.
摘要翻译：本发明的光盘包括其中记录了预先记录的数据的预先记录的区域; 记录第一时钟同步标记和第一地址信息的可记录区域; 以及位于预记录区域和可记录区域之间的具有规定长度的同步区域。

5. 发明授权

US07154832B2 Judgement of optical disc type based on changes of rotating speed of a disc 失效
公开(公告)号：US07154832B2
公开(公告)日：2006-12-26
申请号：US10317042
申请日：2002-12-12
申请人： Yoshihiro Kanda , Takeharu Yamamoto
发明人： Yoshihiro Kanda , Takeharu Yamamoto
IPC分类号： G11B7/00
CPC分类号： G11B19/28 , G11B19/125
摘要： A type of disc is judged at high reliability irrespective of a presence of information record or magnitude of disc eccentricity. A reproduction apparatus judges the type of an optical disc to reproduce information recorded on tracks of the optical disc. The disc is classified as a type of read-only optical discs whose tracks are formed with pits and as a type of recordable optical discs whose tracks are formed with wobbling grooves. The apparatus includes a motor which rotates the optical disc, a head which irradiates the tracks of the optical disc rotated by the motor with an optical beam and outputs two detection signals corresponding to reflected light from the optical disc, and a controller which judges the type of the optical disc according to changes of a period of a specific signal contained in a push-pull signal generated from the two detection signals by varying a rotating speed of the motor.

6. 发明授权

US07480232B2 Optical disc apparatus 有权
标题翻译：光盘装置
公开(公告)号：US07480232B2
公开(公告)日：2009-01-20
申请号：US11159801
申请日：2005-06-23
申请人： Yuichi Kuze , Katsuya Watanabe , Takeharu Yamamoto , Takashi Kishimoto , Kenji Fujiune
发明人： Yuichi Kuze , Katsuya Watanabe , Takeharu Yamamoto , Takashi Kishimoto , Kenji Fujiune
IPC分类号： G11B7/24
CPC分类号： G11B20/0026 , G11B7/00736 , G11B7/08505 , G11B20/10009 , G11B27/24 , G11B27/329 , G11B2020/1259 , G11B2220/211 , G11B2220/2562
摘要： An optical disc apparatus according to the present invention is usable for an optical disc including a bar code area and a control data area adjacent to the bar code area in a radial direction of the optical disc. The optical disc apparatus includes an optical head for directing an optical beam toward the optical disc so as to form an optical spot on the optical disc and output a signal in accordance with the optical beam reflected by the optical disc; a bar code area determination section for determining whether or not the optical spot is positioned on the bar code area of the optical disc based on the signal output by the optical head; and a control section for controlling the optical head so that the optical spot moves toward the control data area, when the optical spot is determined to be positioned on the bar code area.
摘要翻译：根据本发明的光盘装置可用于包括条形码区域和与光盘径向方向上的条形码区域相邻的控制数据区域的光盘。光盘装置包括用于将光束引向光盘以在光盘上形成光点并根据由光盘反射的光束输出信号的光学头; 条形码区域确定部分，用于基于由光头输出的信号确定光点是否位于光盘的条形码区域上; 以及控制部，用于当确定光点被定位在条形码区域上时，控制光学头，使得光点朝向控制数据区移动。

7. 发明授权

US06834030B2 Optical disk apparatus 有权
标题翻译：检测异常状态的盘装置
公开(公告)号：US06834030B2
公开(公告)日：2004-12-21
申请号：US10463368
申请日：2003-06-17
申请人： Takashi Kishimoto , Takeharu Yamamoto , Kenji Fujiune , Katsuya Watanabe
发明人： Takashi Kishimoto , Takeharu Yamamoto , Kenji Fujiune , Katsuya Watanabe
IPC分类号： G11B700
CPC分类号： G11B7/0946 , G11B7/0901 , G11B7/0908 , G11B7/0941 , G11B7/095 , G11B7/0953
摘要： An optical disk apparatus includes: a light irradiator operable to converge a light beam and irradiate an information carrier with the converged light beam; a traverse motor operable to move the light beam in a direction traversing a track formed on a surface of the information carrier; and a tracking controller operable to control the traverse motor to scan the track with the light beam. The tracking controller includes a deviation detector operable to generate a detection signal, a tracking driving circuit operable to generate a driving signal, an integrator operable to integrate a magnitude of a signal corresponding to the driving signal over a predetermined time period and an abnormal state detector operable to detect an abnormal state of the traverse motor based on an output of the integrator.
摘要翻译：光盘装置包括：光照射器，其可操作以会聚光束并用会聚光束照射信息载体; 横动马达，其可操作以沿着穿过形成在信息载体的表面上的轨道的方向移动光束; 以及跟踪控制器，其可操作以控制横动马达以光束扫描轨道。跟踪控制器包括可操作以产生检测信号的偏差检测器，可操作以产生驱动信号的跟踪驱动电路，可用于在预定时间段内对与驱动信号相对应的信号的大小进行积分的积分器和异常状态检测器可操作以基于积分器的输出来检测横动马达的异常状态。

8. 发明授权

US06714493B1 Optical disk apparatus 有权
标题翻译：光盘装置
公开(公告)号：US06714493B1
公开(公告)日：2004-03-30
申请号：US09696843
申请日：2000-10-26
申请人： Takashi Kishimoto , Takeharu Yamamoto , Kenji Fujiune , Katsuya Watanabe
发明人： Takashi Kishimoto , Takeharu Yamamoto , Kenji Fujiune , Katsuya Watanabe
IPC分类号： G11B700
CPC分类号： G11B7/0946 , G11B7/0901 , G11B7/0908 , G11B7/0941 , G11B7/095 , G11B7/0953
摘要： An optical disk apparatus of the present invention includes: a light irradiator operable to converge a light beam and to irradiate an information carrier (a recording medium) with the converged light beam; a moving means operable to move a converging point of the light beam in a direction substantially perpendicular to a surface of the information carrier; and a focusing controller operable to control the moving means to place the converging point of the light beam at a predetermined position. The focusing controller includes: a converging state detector operable to generate a detection signal corresponding to a converging state of the light beam on the information carrier; a focusing driving means operable to generate a driving signal for driving the moving means based on the detection signal; an integrator operable to integrate a magnitude of a signal corresponding to the driving signal over a predetermined time period; and an abnormal state detector operable to detect an abnormal state of the moving means based on an output of the integrator.
摘要翻译：本发明的光盘装置包括：光照射器，其可操作以会聚光束并照射具有会聚光束的信息载体（记录介质）; 移动装置，可操作以沿着基本垂直于信息载体表面的方向移动光束的会聚点; 以及聚焦控制器，其可操作以控制所述移动装置将所述光束的会聚点放置在预定位置。聚焦控制器包括：会聚状态检测器，用于产生对应于光束在信息载体上的会聚状态的检测信号; 聚焦驱动装置，用于根据检测信号产生用于驱动移动装置的驱动信号; 积分器，其可操作以在预定时间段内积分对应于所述驱动信号的信号的幅度; 以及异常状态检测器，其可操作以基于积分器的输出来检测移动装置的异常状态。

9. 发明授权

US06498772B1 Optical disc apparatus 有权
标题翻译：光盘装置
公开(公告)号：US06498772B1
公开(公告)日：2002-12-24
申请号：US09665278
申请日：2000-09-19
申请人： Kenji Fujiune , Takashi Kishimoto , Takeharu Yamamoto , Katsuya Watanabe
发明人： Kenji Fujiune , Takashi Kishimoto , Takeharu Yamamoto , Katsuya Watanabe
IPC分类号： G11B700
CPC分类号： G11B7/0953
摘要： An optical apparatus includes a generator for generating a sine wave based on a rotating disc-shaped information carrier, and an eccentricity measuring device for measuring gain and phase of a sine wave corresponding to eccentricity of the information carrier based on the driving signal from the tracking control and on the measured rotation frequency. Also included is a waveform shaper for shaping the gain and phase of the sine wave generated by the sine wave generator using the measured gain and phase obtained by the eccentricity measuring device. An eccentricity correction is applied by adding together the sine wave shaped by the waveform shaper and the driving signal from the tracking control to drive an optical beam on a desired track of the rotating disc.
摘要翻译：一种光学装置包括：基于旋转的盘形信息载体产生正弦波的发生器，以及用于根据来自跟踪的驱动信号测量与信息载体的偏心相对应的正弦波的增益和相位的偏心测量装置控制和测量的旋转频率。还包括波形整形器，用于使用由偏心测量装置获得的测量的增益和相位来对由正弦波发生器产生的正弦波的增益和相位进行整形。通过将由波形整形器形成的正弦波和来自跟踪控制的驱动信号相加在驱动旋转盘的期望轨道上的光束，来应用偏心校正。

10. 发明授权

US06925048B2 Optical disc apparatus 有权
标题翻译：光盘装置
公开(公告)号：US06925048B2
公开(公告)日：2005-08-02
申请号：US10046561
申请日：2001-11-09
申请人： Yuichi Kuze , Katsuya Watanabe , Takeharu Yamamoto , Takashi Kishimoto , Kenji Fujiune
发明人： Yuichi Kuze , Katsuya Watanabe , Takeharu Yamamoto , Takashi Kishimoto , Kenji Fujiune
IPC分类号： G11B7/007 , G11B7/085 , G11B20/10 , G11B20/12 , G11B27/24 , G11B27/32 , G11B7/24
CPC分类号： G11B20/0026 , G11B7/00736 , G11B7/08505 , G11B20/10009 , G11B27/24 , G11B27/329 , G11B2020/1259 , G11B2220/211 , G11B2220/2562
摘要： An optical disc apparatus according to the present invention is usable for an optical disc including a bar code area and a control data area adjacent to the bar code area in a radial direction of the optical disc. The optical disc apparatus includes an optical head for directing an optical beam toward the optical disc so as to form an optical spot on the optical disc and output a signal in accordance with the optical beam reflected by the optical disc, a bar code area determination section for determining whether or not the optical spot is positioned on the bar code area of the optical disc based on the signal output by the optical head; and a control section for controlling the optical head so that the optical spot moves toward the control data area, when the optical spot is determined to be positioned on the bar code area.
摘要翻译：根据本发明的光盘装置可用于包括条形码区域和与光盘径向方向上的条形码区域相邻的控制数据区域的光盘。光盘装置包括用于将光束引向光盘以在光盘上形成光点并根据由光盘反射的光束输出信号的光学头，条形码区域确定部分用于基于由光学头输出的信号确定光点是否位于光盘的条形码区域上; 以及控制部，用于当确定光点被定位在条形码区域上时，控制光学头，使得光点朝向控制数据区移动。

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