公开(公告)号：US06985412B1

公开(公告)日：2006-01-10

申请号：US09571536

申请日：2000-05-16

申请人： Alex Bradshaw ,  Yuichi Kimikawa ,  Shinichi Naohara ,  Norio Matsuda

发明人： Alex Bradshaw ,  Yuichi Kimikawa ,  Shinichi Naohara ,  Norio Matsuda

IPC分类号： G11B7/00

CPC分类号： G11B7/0945 ,  G11B7/0908 ,  G11B7/094 ,  G11B7/0941 ,  G11B7/0946

摘要： Two sum output signals from two sets of the photodetector elements located symmetrically each other with respect to a light-receiving center of the photodetector of the optical pickup are amplified individually by two amplifiers. A focus error signal is generated in accordance with a difference between respective output levels of the two amplified signals. The gains of the two amplifiers are adjusted in accordance with the focus error signal. A predetermined bias voltage is applied to the focus error signal line in the focus servo control means in accordance with the focus error signal.

摘要翻译： 由两个放大器单独放大两组相对于光拾取器的光电检测器的光接收中心彼此对称设置的两个光检测元件的和输出信号。 根据两个放大信号的各个输出电平之间的差产生聚焦误差信号。 根据聚焦误差信号调整两个放大器的增益。 根据聚焦误差信号，在聚焦伺服控制装置中对聚焦误差信号线施加预定的偏置电压。

公开(公告)号：US5508988A

公开(公告)日：1996-04-16

申请号：US357149

申请日：1994-12-15

申请人： Yoshiya Nonaka ,  Yoshio Aoyagi ,  Hiroyuki Abe ,  Chiaki Hirano ,  Kiyoshi Furukawa ,  Alex Bradshaw ,  Kazuhiro Kiyoura ,  Seiji Kato ,  Koichiro Haraguchi

发明人： Yoshiya Nonaka ,  Yoshio Aoyagi ,  Hiroyuki Abe ,  Chiaki Hirano ,  Kiyoshi Furukawa ,  Alex Bradshaw ,  Kazuhiro Kiyoura ,  Seiji Kato ,  Koichiro Haraguchi

IPC分类号： G11B19/02 ,  G11B19/12 ,  G11B19/20 ,  G11B27/10 ,  G11B27/32 ,  G11B7/00

CPC分类号： G11B27/329 ,  G11B19/02 ,  G11B19/12 ,  G11B19/20 ,  G11B27/105 ,  G11B2220/218 ,  G11B2220/2545

摘要： Method and Apparatus for playing a CD are designed to allow playback of a partially recorded disk of CD-Rs (CD-Recordable) having the DRAW (direct read after write) capability. It is determined if a target disk is a partially recorded CD-R recording medium. When a reverse command to return to a predetermined address of the recording medium to execute playback is input, the absolute time for information being reproduced is detected and it is then determined if the absolute time is within a predetermined actual pause period. When the absolute time is determined to be within the actual pause period, the reverse command is canceled. It is therefore possible to properly operate a servo system within that recording area of the recording medium where information has already been recorded, thereby allowing a return to a predetermined address associated with the reverse command. This prevents the loss of control of the servo system. When the pickup position is in a lead-in area of the partially recorded CD-R recording medium, thus ensuring the proper reading control.

摘要翻译： 用于播放CD的方法和装置被设计为允许播放具有DRAW（写入后直接读取）能力的CD-R（CD可记录）的部分记录盘。 确定目标盘是否是部分记录的CD-R记录介质。 当输入返回到记录介质的预定地址以执行重放的反向命令时，检测正在再现的信息的绝对时间，然后确定绝对时间是否在预定的实际暂停时段内。 当确定绝对时间在实际暂停时间内时，反向指令被取消。 因此，可以在已经记录信息的记录介质的记录区域内适当地操作伺服系统，从而允许返回到与反向命令相关联的预定地址。 这样可以防止伺服系统的失控。 当拾取位置在部分记录的CD-R记录介质的导入区域中时，从而确保适当的读取控制。

公开(公告)号：US5414684A

公开(公告)日：1995-05-09

申请号：US7872

申请日：1993-01-22

申请人： Yoshiya Nonaka ,  Yoshio Aoyagi ,  Hiroyuki Abe ,  Chiaki Hirano ,  Kiyoshi Furukawa ,  Alex Bradshaw ,  Kazuhiro Kiyoura ,  Seiji Kato ,  Koichiro Haraguchi

发明人： Yoshiya Nonaka ,  Yoshio Aoyagi ,  Hiroyuki Abe ,  Chiaki Hirano ,  Kiyoshi Furukawa ,  Alex Bradshaw ,  Kazuhiro Kiyoura ,  Seiji Kato ,  Koichiro Haraguchi

IPC分类号： G11B19/00 ,  G11B19/02 ,  G11B19/12 ,  G11B19/20 ,  G11B27/10 ,  G11B27/32 ,  G11B27/36 ,  G11B7/00

CPC分类号： G11B19/12 ,  G11B19/00 ,  G11B19/02 ,  G11B19/20 ,  G11B27/105 ,  G11B27/329 ,  G11B27/36 ,  G11B2220/218 ,  G11B2220/2545

摘要： Disclosed is a CD player that ensures a setup operation and reproduction of information even when a partially recorded CD-R is set therein. The CD player sequentially performs the setup operation, starting from the first setup position located at the innermost periphery of the CD, predetermined for the setup operation, until the setup operation is complete at any of n-th (n=2, 3, . . . ) setup positions lying outwardly of the first setup position. If the setup operation is not completed even at an n-th setup position located at the outermost periphery of the CD, the CD player performs the setup operation again at at least one setup position lying inwardly of the n-th setup position. Also disclosed is a CD player that can discriminate a partially recorded, additionally recordable CD-R, and can execute the reproduction control for the PRD. This CD player discriminates a set disk as an additionally recordable one when a mirror-finished portion is detected in the control to detect the lead-in area or when the lead-in area cannot be detected and the TOC information cannot be read.

摘要翻译： 公开了即使在其中设置了部分记录的CD-R的情况下也确保信息的设置操作和再现的CD播放机。 CD播放机顺序地执行设置操作，从位于CD的最内周边的第一设置位置开始，用于建立操作预定，直到建立操作在第n（n = 2,3，...）中的任一个完成。 ...）设置位置位于第一设置位置的外侧。 如果即使在位于CD最外边缘的第n设定位置，即使设置操作也没有完成，则CD播放机在位于第n设置位置的内部的至少一个设置位置再次执行设置操作。 还公开了可以区分部分记录的可另外记录的CD-R的CD播放器，并且可以执行PRD的再现控制。 当在控制器中检测到镜像完成部分以检测导入区域或当不能检测到导入区域并且TOC信息不能被读取时，该CD播放器将设置的盘区分为可附加记录的盘。

公开(公告)号：US20130273869A1

公开(公告)日：2013-10-17

申请号：US13444475

申请日：2012-04-11

申请人： Robert Preston Parker ,  Todd Charter Brown ,  Edgardo Alicea ,  Alex Bradshaw ,  Edmundo Garcia

发明人： Robert Preston Parker ,  Todd Charter Brown ,  Edgardo Alicea ,  Alex Bradshaw ,  Edmundo Garcia

IPC分类号： H05K11/00 ,  G04F10/00 ,  H03K17/975 ,  H04B1/06

CPC分类号： G04G13/02 ,  G04B47/00 ,  G04C21/02 ,  G04G17/086 ,  G04G21/08 ,  H04R1/02

摘要： A table music system includes an enclosure having a top surface and a front surface free of manually mechanically actuable controls for controlling functions of the table music system. A radio receiver and powered speakers system are located within the enclosure. A display is located on the front surface of the enclosure for displaying at least time. An alarm in the enclosure is configured to be set by a user to produce an alarm signal at a user-selectable time. A touch-sensitive area on the enclosure allows the user to control a function of the take music system. A wireless remote control permits the user to control functions of the table music system.

摘要翻译： 桌子音乐系统包括具有顶表面和前表面的外壳，其没有用于控制桌子音乐系统功能的手动机械致动控制。 无线电接收器和有源扬声器系统位于机箱内。 显示器位于机箱的前表面，至少显示时间。 机箱中的报警器被配置为由用户设置以在用户可选择的时间产生报警信号。 外壳上的触敏区域允许用户控制拍摄音乐系统的功能。 无线遥控器允许用户控制表音乐系统的功能。

公开(公告)号：US06246646B1

公开(公告)日：2001-06-12

申请号：US09114880

申请日：1998-07-14

申请人： Hiroyuki Abe ,  Shinichi Naohara ,  Takeshi Sato ,  Alex Bradshaw ,  Kazushige Kawana ,  Hideaki Watarihana ,  Norio Matsuda ,  Kenichi Takahashi

发明人： Hiroyuki Abe ,  Shinichi Naohara ,  Takeshi Sato ,  Alex Bradshaw ,  Kazushige Kawana ,  Hideaki Watarihana ,  Norio Matsuda ,  Kenichi Takahashi

IPC分类号： G11B709

CPC分类号： G11B7/08511 ,  G11B7/0948 ,  G11B2007/0013

摘要： A focus control apparatus for a multilayer optical recording medium performs an adequate focus jump on a multilayer optical recording medium. Threshold values are set according to the amount of a level change in a focus error signal of a loaded multilayer optical recording medium, and focus jump control is conducted based on the result of comparison between the level of the focus error signal and the set threshold values. Positive and negative threshold values to be compared with the level of the focus error signal to detect a zero-crossing point of the focus error signal are set in accordance with the amount of a level change in the focus error signal, after which an acceleration operation of the focus actuator is started in response to a focus jump instruction to shift the focus position of read light for a focus jump, the acceleration operation is stopped in accordance with zero-crossing detection, a deceleration operation of the focus actuator is started thereafter and is stopped in accordance with zero-crossing detection, so that the operation returns to the focus servo operation.

摘要翻译： 用于多层光学记录介质的聚焦控制装置在多层光学记录介质上执行适当的聚焦跳跃。 根据加载的多层光学记录介质的聚焦误差信号中的电平变化量设定阈值，并且基于聚焦误差信号的电平与设定的阈值之间的比较结果进行聚焦跳跃控制 。 根据聚焦误差信号的电平变化量，设定要与聚焦误差信号的电平进行比较以检测聚焦误差信号的过零点的正和负阈值，然后加速操作 响应于聚焦跳转指令开始移动聚焦跳跃的读取光的焦点位置，根据过零检测停止加速操作，此后开始聚焦致动器的减速操作，并且 根据过零检测停止，使得操作返回到聚焦伺服操作。

公开(公告)号：US6101157A

公开(公告)日：2000-08-08

申请号：US104930

申请日：1998-06-26

申请人： Alex Bradshaw ,  Kazushige Kawana ,  Masakazu Takahashi ,  Yuichi Kimikawa ,  Hitoshi Yamazaki ,  Hideaki Watarihana

发明人： Alex Bradshaw ,  Kazushige Kawana ,  Masakazu Takahashi ,  Yuichi Kimikawa ,  Hitoshi Yamazaki ,  Hideaki Watarihana

IPC分类号： G11B7/00 ,  G11B7/085 ,  G11B7/09

CPC分类号： G11B7/08511 ,  G11B7/0945 ,  G11B2007/0013 ,  G11B7/094 ,  G11B7/0941

摘要： Apparatus and method for focus control are devised to cope with a fluctuation of an optimum gain of a focus servo loop due to a difference between light reflectance of recording surfaces or the like and to allow an optimum focal position of read light to preferably trace a target recording surface. The focus control apparatus of the invention includes: reading device for generating a read signal of a recording medium 1; a focus servo loop for allowing an optimum converging position of the read light to trace the target recording surface in accordance with a focus error signal FE by using a focusing actuator to displace the optimum converging position of the read light in the optical axial direction; a level detecting unit of the read signal; a level detecting unit of an error signal FE; amplifiers and of a read signal RF and the error signal FE; and a control unit for driving the actuator so as to allow the optimum converging position of the read light to approach the recording surface in the set-up mode and for controlling gains of the amplifiers so that a detection level by the detecting unit in the set-up mode reaches a predetermined level and a detection level by a detecting unit reaches a predetermined level.

摘要翻译： 用于聚焦控制的设备和方法被设计成能够应对由于记录表面等的光反射率之间的差异导致的聚焦伺服环路的最佳增益的波动，并且允许读取光的最佳焦点位置优选地追踪目标 记录表面。 本发明的聚焦控制装置包括：用于产生记录介质1的读取信号的读取装置; 聚焦伺服环，用于通过使用聚焦致动器来使读取光的最佳会聚位置根据聚焦误差信号FE跟踪目标记录表面，以使读取光在光轴方向上的最佳会聚位置移位; 读取信号的电平检测单元; 误差信号FE的电平检测单元; 放大器和读取信号RF和误差信号FE; 以及控制单元，用于驱动致动器，以便允许读取光的最佳会聚位置在建立模式下接近记录表面，并用于控制放大器的增益，使得检测单元在组中的检测水平 -up模式达到预定水平，并且检测单元的检测水平达到预定水平。

公开(公告)号：US5926445A

公开(公告)日：1999-07-20

申请号：US770436

申请日：1996-12-20

申请人： Takashi Sasaki ,  Kazuhiro Kiyoura ,  Alex Bradshaw ,  Koichiro Haraguchi ,  Takeshi Matsumoto ,  Tomoko Miyagawa ,  Hideaki Yoshimura

发明人： Takashi Sasaki ,  Kazuhiro Kiyoura ,  Alex Bradshaw ,  Koichiro Haraguchi ,  Takeshi Matsumoto ,  Tomoko Miyagawa ,  Hideaki Yoshimura

IPC分类号： G11B7/09 ,  G11B7/095 ,  G11B7/085

CPC分类号： G11B7/094 ,  G11B7/0901 ,  G11B7/0903

摘要： An unbalanced waveform of a tracking error signal is automatically corrected within a short period of time. A peak value and a bottom value of a tracking error signal are obtained by a peak-hold circuit and a bottom-hold circuit, respectively. Based on the peak value and the bottom value, an amount of offset measured from a reference level and an amplitude of the tracking error signal are computed. An adjustment value is computed for correcting the unbalance between the peak value and the bottom value based on the amount of offset and the amplitude of the tracking error signal. The adjustment value is fed back to a tracking balance circuit so that the waveform of the unbalanced waveform of the tracking error signal is corrected.

摘要翻译： 跟踪误差信号的不平衡波形在短时间内自动校正。 通过峰值保持电路和底部保持电路分别获得跟踪误差信号的峰值和底部值。 基于峰值和底值，计算从参考电平测量的偏移量和跟踪误差信号的幅度。 基于偏移量和跟踪误差信号的振幅来计算调整值，用于校正峰值和底部值之间的不平衡。 将调整值反馈到跟踪平衡电路，以便校正跟踪误差信号的不平衡波形的波形。

公开(公告)号：US5515351A

公开(公告)日：1996-05-07

申请号：US368665

申请日：1995-01-04

申请人： Yoshiya Nonaka ,  Yoshio Aoyagi ,  Hiroyuki Abe ,  Chiaki Hirano ,  Kiyoshi Furukawa ,  Alex Bradshaw ,  Kazuhiro Kiyoura ,  Seiji Kato ,  Koichiro Haraguchi

发明人： Yoshiya Nonaka ,  Yoshio Aoyagi ,  Hiroyuki Abe ,  Chiaki Hirano ,  Kiyoshi Furukawa ,  Alex Bradshaw ,  Kazuhiro Kiyoura ,  Seiji Kato ,  Koichiro Haraguchi

IPC分类号： G11B19/00 ,  G11B19/02 ,  G11B19/12 ,  G11B19/20 ,  G11B27/10 ,  G11B27/32 ,  G11B27/36 ,  G11B7/00

CPC分类号： G11B19/12 ,  G11B19/00 ,  G11B19/02 ,  G11B19/20 ,  G11B27/105 ,  G11B27/329 ,  G11B27/36 ,  G11B2220/218 ,  G11B2220/2545

摘要： Disclosed is a CD player that ensures a setup operation and reproduction of information even when a partially recorded CD-R is set therein. The CD player sequentially performs the setup operation, starting from the first setup position located at the innermost periphery of the CD, predetermined for the setup operation, until the setup operation is complete at any of n-th (n=2, 3, . . . ) setup positions lying outwardly of the first setup position. If the setup operation is not completed even at an n-th setup position located at the outermost periphery of the CD, the CD player performs the setup operation again at at least one setup position lying inwardly of the n-th setup position. Also disclosed is a CD player that can discriminate a partially recorded, additionally recordable CD-R, and can execute the reproduction control for the PRD. This CD player discriminates a set disk as an additionally recordable one when a mirror-finished portion is detected in the control to detect the lead-in area or when the lead-in area cannot be detected and the TOC information cannot be read.

摘要翻译： 公开了即使在其中设置了部分记录的CD-R的情况下也确保信息的设置操作和再现的CD播放机。 CD播放机顺序地执行设置操作，从位于CD的最内周边的第一设置位置开始，用于建立操作预定，直到建立操作在第n（n = 2,3，...）中的任一个完成。 ...）设置位置位于第一设置位置的外侧。 如果即使在位于CD最外边缘的第n设定位置，即使设置操作也没有完成，则CD播放机在位于第n设置位置的内部的至少一个设置位置再次执行设置操作。 还公开了可以区分部分记录的可另外记录的CD-R的CD播放器，并且可以执行PRD的再现控制。 当在控制器中检测到镜像完成部分以检测导入区域或当不能检测到导入区域并且TOC信息不能被读取时，该CD播放器将设置的盘区分为可附加记录的盘。

公开(公告)号：US5430698A

公开(公告)日：1995-07-04

申请号：US320788

申请日：1994-10-11

申请人： Yoshiya Nonaka ,  Yoshio Aoyagi ,  Hiroyuki Abe ,  Alex Bradshaw ,  Kazuhiro Kiyoura ,  Seiji Kato ,  Koichiro Haraguchi

发明人： Yoshiya Nonaka ,  Yoshio Aoyagi ,  Hiroyuki Abe ,  Alex Bradshaw ,  Kazuhiro Kiyoura ,  Seiji Kato ,  Koichiro Haraguchi

IPC分类号： G11B7/00 ,  G11B7/005 ,  G11B19/02 ,  G11B27/10 ,  G11B27/32

CPC分类号： G11B19/02 ,  G11B27/105 ,  G11B27/329 ,  G11B2220/218 ,  G11B2220/2545

摘要： A playing apparatus for a compact disc on which TOC information comprising at least first to third point data has repetitively been recorded in a lead-in area. A reading point by a pickup is moved in the lead-in area from the disc outer rim side in accordance with a TOC information reading command. When it is detected that the reading point was positioned to a recording track of third point data locating on the disc inner rim side in each of the TOC information, the reading point is jumped to the disc inner rim side by at least only two tracks. After that, the reading point is moved toward the disc outer rim side along the track, thereby reading the TOC information including the first, second, and third point data.

摘要翻译： 一种用于光盘的播放装置，其中包括至少第一至第三点数据的TOC信息已重复地记录在导入区中。 拾取器的读取点根据TOC信息读取命令从盘外缘侧在导入区域中移动。 当在每个TOC信息中检测到读取点被定位在定位在盘内缘侧上的第三点数据的记录轨道时，读取点通过至少仅两个轨迹跳到盘内缘侧。 之后，读取点沿着轨道移动到盘外边缘侧，从而读取包括第一，第二和第三点数据的TOC信息。

公开(公告)号：US06151280A

公开(公告)日：2000-11-21

申请号：US105269

申请日：1998-06-26

申请人： Shinichi Naohara ,  Takashi Suzuki ,  Alex Bradshaw ,  Motoi Kimura ,  Norio Matsuda ,  Kazushige Kawana ,  Kenichi Takahashi

发明人： Shinichi Naohara ,  Takashi Suzuki ,  Alex Bradshaw ,  Motoi Kimura ,  Norio Matsuda ,  Kazushige Kawana ,  Kenichi Takahashi

IPC分类号： G11B7/00 ,  G11B7/085 ,  G11B7/09

CPC分类号： G11B7/08511 ,  G11B2007/0013 ,  G11B7/0945

摘要： A focus jump control apparatus of a player for playing a multilayer recording disc surely achieves a focus jump. This apparatus includes: a focusing servo loop for allowing a focal point to trace a recording surface in accordance with a focusing error signal by using a focusing actuator to displace the focal point of read light to a disc in the optical axial direction; and a tracking servo loop for allowing the focal point to trace disc tracks. A loop opening/closing control unit opens/closes focusing/tracking servo loops in response to an instruction and closes the focusing servo loop when the movement of the focal point from one of the recording surfaces to the other. During the movement of the read light focal point, the closing state of the tracking servo loop is maintained. Jump driving means generates a drive signal of the actuator to move the focal point from one of the recording surfaces to the other based on the error signal under the opening/closing control of the focusing/tracking servo loops.

摘要翻译： 用于播放多层记录盘的播放器的焦点跳跃控制装置确实实现了聚焦跳跃。 该装置包括：聚焦伺服环，用于通过使用聚焦致动器将读取光的焦点在光轴方向上移位到光盘，根据聚焦误差信号使焦点跟踪记录表面; 以及用于允许焦点跟踪盘轨迹的跟踪伺服环路。 环路打开/关闭控制单元响应于指令打开/关闭聚焦/跟踪伺服环路，并且当焦点从记录表面之一移动到另一个时闭合聚焦伺服环路。 在读取光焦点的运动期间，维持跟踪伺服环路的关闭状态。 跳转驱动装置根据在聚焦/跟踪伺服环路的打开/关闭控制下的误差信号产生致动器的驱动信号，以将焦点从记录表面之一移动到另一记录表面。