公开(公告)号：US5946285A

公开(公告)日：1999-08-31

申请号：US808534

申请日：1997-02-28

申请人： Kazuhiko Nakane ,  Masato Nagasawa ,  Hiroyuki Ohata ,  Masayoshi Shimamoto ,  Kouichi Komawaki ,  Kenji Gotoh ,  Yoshinobu Ishida

发明人： Kazuhiko Nakane ,  Masato Nagasawa ,  Hiroyuki Ohata ,  Masayoshi Shimamoto ,  Kouichi Komawaki ,  Kenji Gotoh ,  Yoshinobu Ishida

IPC分类号： G11B20/12 ,  G11B7/007 ,  G11B7/09 ,  G11B7/08

CPC分类号： G11B7/00745 ,  G11B7/00718 ,  G11B7/0901 ,  G11B7/0938

摘要： In optical disk having a track formed of groove tracks and land tracks connected every revolution to form a single spiral, each revolution-of the tracks is divided into sectors, each having identification signal region at the head of the sector, and the identification signal regions in tracks adjacent to each other are aligned in the radial direction. Prepits are formed in the identification signal region, on an extension of a boundary between groove and land tracks adjacent to each other. The prepits have a width substantially equal to the width of the grooves. The identification signal including address information of the sector. The polarity of tracking error signal is detected at the identification signal region of the recording sector, and whether the recording sector is in a groove track or land track is determined based on the polarity of tracking error signal. The identification signal may include information concerning the timing for switching tracking polarity in accordance with whether groove or land sector is being scanned.

摘要翻译： 在具有由每转一次连接的沟槽轨道和脊迹道形成的轨道形成单个螺旋的光盘中，轨道的每转都被划分成扇区，每个扇区在扇区的头部具有识别信号区域，并且识别信号区域 在彼此相邻的轨道中在径向方向上对齐。 在识别信号区域中，在彼此相邻的槽和焊盘轨迹之间的边界的延伸部上形成预浸料。 预凹坑的宽度基本上等于槽的宽度。 识别信号包括扇区的地址信息。 在记录扇区的识别信号区域处检测跟踪误差信号的极性，并且基于跟踪误差信号的极性来确定记录扇区是凹槽轨道还是槽脊轨道。 识别信号可以包括关于根据是否正在扫描凹槽或脊扇区的切换跟踪极性的定时的信息。

公开(公告)号：US5933410A

公开(公告)日：1999-08-03

申请号：US883443

申请日：1997-06-26

申请人： Kazuhiko Nakane ,  Hiroyuki Ohata ,  Masato Nagasawa ,  Kenji Gotoh ,  Yoshinobu Ishida ,  Isao Satoh ,  Shunji Ohara ,  Takashi Ishida ,  Yoshinari Takemura

发明人： Kazuhiko Nakane ,  Hiroyuki Ohata ,  Masato Nagasawa ,  Kenji Gotoh ,  Yoshinobu Ishida ,  Isao Satoh ,  Shunji Ohara ,  Takashi Ishida ,  Yoshinari Takemura

IPC分类号： G11B20/12 ,  G11B7/007 ,  G11B7/09 ,  G11B20/14 ,  G11B27/19 ,  G11B27/24 ,  G11B27/30 ,  G11B7/26

CPC分类号： G11B7/00718 ,  G11B27/19 ,  G11B27/3027 ,  G11B7/00745 ,  G11B7/0901 ,  G11B7/0938 ,  G11B27/24 ,  G11B7/094

摘要： An optical disc using a single-spiral land and groove track format enabling accurate tracking offset correction and reliable detection of the transition point between a land track and a groove track, and a driving apparatus therefor. Four physical address areas PID1, PID2, PID3, and PID4 are recorded to a header area such that PID1 and PID2 are offset one-half track pitch toward the outside circumference of the disc from the groove track center, and PID3 and PID4 are offset one-half track pitch toward the inside circumference of the disc from the groove track center, and the physical address areas PID1-PID4 can be detected by means of a difference signal in the radial direction. The single frequency pattern area VFO at the beginning of each PID is lengthened by PID1 and PID3, thereby enabling tracking offset correction using a sum signal, and detection of the land-groove transition point using a difference signal obtained from the PID offset.

摘要翻译： 一种使用单螺旋纹脊和凹槽轨道格式的光盘，其能够进行轨迹和凹槽轨道之间的转变点的精确跟踪偏移校正和可靠的检测，以及用于其的驱动装置。 四个物理地址区域PID1，PID2，PID3和PID4被记录到标题区域，使得PID1和PID2从凹槽轨道中心向盘的外圆周偏移二分之一道距，PID3和PID4偏移一个 从凹槽轨道中心朝向盘的内圆周的磁道间距，并且物理地址区域PID1-PID4可以通过径向上的差分信号来检测。 每个PID开始时的单频模式区域VFO由PID1和PID3延长，从而可以使用和信号进行跟踪偏移校正，并使用从PID偏移获得的差分信号来检测纹沟转换点。

公开(公告)号：US5923640A

公开(公告)日：1999-07-13

申请号：US883445

申请日：1997-06-26

申请人： Yoshinari Takemura ,  Shunji Ohara ,  Takashi Ishida ,  Isao Satoh ,  Kazuhiko Nakane ,  Masato Nagasawa ,  Yoshinobu Ishida

发明人： Yoshinari Takemura ,  Shunji Ohara ,  Takashi Ishida ,  Isao Satoh ,  Kazuhiko Nakane ,  Masato Nagasawa ,  Yoshinobu Ishida

IPC分类号： G11B7/00 ,  G11B7/004 ,  G11B7/007 ,  G11B7/30 ,  G11B7/24

CPC分类号： G11B7/00745 ,  G11B7/007 ,  G11B7/00718 ,  G11B7/00736 ,  G11B7/0079

摘要： An optical disc having both rewritable area and read-only area is disclosed. The rewritable area has a single spiral pattern of start track land at a leading edge, and a single spiral pattern of end track land at a trailing edge, whereby portions of the physical address area PID deviated approximately Pa/2 from the track of the rewritable area are being intruded into the start track land and the end track land.

公开(公告)号：US5602688A

公开(公告)日：1997-02-11

申请号：US526176

申请日：1995-09-11

申请人： Eiji Yokoyama ,  Masato Nagasawa

发明人： Eiji Yokoyama ,  Masato Nagasawa

IPC分类号： B29C45/23 ,  B29C45/77 ,  G11B15/18 ,  G11B15/43 ,  G11B15/467 ,  G11B15/60

CPC分类号： G11B15/602 ,  G11B15/1875 ,  G11B15/43 ,  G11B15/4673

摘要： A method and apparatus for controlling surface pressure exerted on a movable magnetic head by a recording medium to provide optimum contact between the movable magnetic head and the recording medium with high precision in a wide frequency range. An estimated surface pressure exerted by the recording medium on the movable magnetic head is determined based upon an electrical simulation of the characteristics of the movable magnetic head. The estimated surface pressure exerted is compared to a reference surface pressure in order to develop a surface pressure control signal. The surface pressure tension of the magnetic recording medium and the position of the movable magnetic head may be controlled in accordance with the surface pressure control signal.

摘要翻译： 一种用于通过记录介质控制施加在可移动磁头上的表面压力的方法和装置，以在宽频率范围内以高精度提供可移动磁头与记录介质之间的最佳接触。 基于可移动磁头的特性的电气仿真来确定由记录介质施加在可移动磁头上的估计表面压力。 将所施加的估计的表面压力与参考表面压力进行比较，以便产生表面压力控制信号。 可以根据表面压力控制信号来控制磁记录介质的表面压力张力和可动磁头的位置。

公开(公告)号：US5404252A

公开(公告)日：1995-04-04

申请号：US48951

申请日：1993-04-14

申请人： Masato Nagasawa ,  Eiji Yokoyama

发明人： Masato Nagasawa ,  Eiji Yokoyama

IPC分类号： G11B5/588 ,  G11B21/02

CPC分类号： G11B5/588

摘要： A movable head position controlling device for magnetic recording and reproducing apparatuses. The position of a magnetic head is detected. The magnetic head is driven by an actuator in accordance with a driving signal. The driving signal is corrected on the basis of the estimated speed of the magnetic head, the absolute height of the movable head, the displacement of the magnetic head, or the output of an equivalent coil. The speed of the magnetic head is estimated by a speed estimating observer. The absolute height is detected by a magnetic field detecting element. The displacement of the magnetic head is detected by non-contacting sensors attached to a member which moves together with the magnetic head and a member which does not move together with the magnetic head, respectively.

摘要翻译： 一种用于磁记录和再现装置的可动头位置控制装置。 检测磁头的位置。 磁头由致动器根据驱动信号驱动。 基于磁头的估计速度，可动头的绝对高度，磁头的位移或等效线圈的输出来校正驱动信号。 磁头的速度由速度估计观测器估计。 绝对高度由磁场检测元件检测。 磁头的位移由附着在与磁头一起移动的构件的不接触传感器和不与磁头一起移动的构件分别检测。

公开(公告)号：US07457518B2

公开(公告)日：2008-11-25

申请号：US10997967

申请日：2004-11-29

申请人： Masato Nagasawa

发明人： Masato Nagasawa

IPC分类号： H04N5/91

CPC分类号： H04N9/804 ,  G11B7/0037 ,  G11B7/00745 ,  G11B7/08541 ,  G11B20/10 ,  G11B20/1217 ,  G11B20/1251 ,  G11B20/1258 ,  G11B27/005 ,  G11B27/034 ,  G11B27/036 ,  G11B27/105 ,  G11B27/19 ,  G11B27/24 ,  G11B27/28 ,  G11B27/3027 ,  G11B27/329 ,  G11B2220/20 ,  G11B2220/216 ,  G11B2220/2525 ,  G11B2220/2537 ,  H04N5/783 ,  H04N5/85 ,  H04N9/8042 ,  H04N9/8063 ,  H04N19/61

摘要： In an optical disk storing digital image information in the form of a succession of blocks, each comprising a plurality of frames comprising I-, P- and B-pictures, wherein an address format is preformatted in front of the block of image information of said plurality of frames, and the data arrangement within each image information blocks is such that I- and P-pictures are collectively disposed. The position of the I-pictures within each block is shifted from one block to another. The I-picture data may be divided into fraction according to the position on the screen, the DCT frequency, or layering, and the fractional I-picture data may be arranged in the image information blocks, and a header or parity signal is recorded in front of each fractional I-picture data. With such a configuration, it is possible to increase the speed of fast playback, and realize smooth playback picture.

摘要翻译： 在存储数字形式的数字图像信息的光盘中，每个块包括包括I，P和B图像的多个帧，其中地址格式被预格式化在所述块的图像信息块的前面 多个帧，并且每个图像信息块内的数据排列使得I和P图像被集中布置。 每个块内的I图像的位置从一个块移动到另一个块。 I图像数据可以根据屏幕上的位置，DCT频率或分层划分为分数，并且分数I图像数据可以被布置在图像信息块中，并且标题或奇偶校验信号被记录在 每个分数I图像数据的前面。 通过这样的结构，能够提高快速重放的速度，能够实现平滑的播放画面。

公开(公告)号：US06771884B2

公开(公告)日：2004-08-03

申请号：US09847307

申请日：2001-05-03

申请人： Masato Nagasawa

发明人： Masato Nagasawa

IPC分类号： H04N5781

CPC分类号： H04N9/804 ,  G11B7/0037 ,  G11B7/00745 ,  G11B7/08541 ,  G11B20/10 ,  G11B20/1217 ,  G11B20/1251 ,  G11B20/1258 ,  G11B27/005 ,  G11B27/034 ,  G11B27/036 ,  G11B27/105 ,  G11B27/19 ,  G11B27/24 ,  G11B27/28 ,  G11B27/3027 ,  G11B27/329 ,  G11B2220/20 ,  G11B2220/216 ,  G11B2220/2525 ,  G11B2220/2537 ,  H04N5/783 ,  H04N5/85 ,  H04N9/8042 ,  H04N9/8063 ,  H04N19/61

摘要： In an optical disk storing digital image information in the form of a succession of blocks, each comprising a plurality of frames having I-, P- and B-pictures, an address format is preformatted in front of the block of image information of the plurality of frames. The data arrangement within each image information blocks is such that I- and P-pictures are collectively disposed. The position of the I-pictures within each block is shifted from one block to another. The I-picture data may be divided into fraction according to the position on the screen, the DCT frequency, or layering, and the fractional I-picture data may be arranged in the image information blocks, and a header or parity signal is recorded in front of each fractional I-picture data.

摘要翻译： 在存储数字形式的数字图像信息的光盘中，每个块包括具有I-，P-和B-图像的多个帧，地址格式被预格式化在多个图像信息块的前面 的框架。 每个图像信息块内的数据排列使得I和P图像被集中设置。 每个块内的I图像的位置从一个块移动到另一个块。 I图像数据可以根据屏幕上的位置，DCT频率或分层划分为分数，并且分数I图像数据可以被布置在图像信息块中，并且标题或奇偶校验信号被记录在 每个分数I图像数据的前面。

公开(公告)号：US06466530B1

公开(公告)日：2002-10-15

申请号：US09956103

申请日：2001-09-20

申请人： Kazuhiko Nakane ,  Hiroyuki Oohata ,  Masato Nagasawa ,  Kenji Gotoh ,  Yoshinobu Ishida

发明人： Kazuhiko Nakane ,  Hiroyuki Oohata ,  Masato Nagasawa ,  Kenji Gotoh ,  Yoshinobu Ishida

IPC分类号： G11B700

CPC分类号： G11B27/19 ,  G11B7/00718 ,  G11B7/00745 ,  G11B7/0901 ,  G11B7/0938 ,  G11B7/0948 ,  G11B20/1217 ,  G11B27/3027 ,  G11B2020/1232 ,  G11B2020/1239 ,  G11B2020/1265 ,  G11B2020/1268 ,  G11B2020/1274 ,  G11B2020/1292 ,  G11B2220/20 ,  G11B2220/216 ,  G11B2220/2525

摘要： The invention provides an optical disk medium having a recording spiral formed by connecting groove tracks and land tracks alternately, and permitting detection of a connecting point between a groove track and a land track reliably is provided, and a method of tracking the optical disk medium and an optical disk drive apparatus for driving the optical disk medium. One part of an identification signal area is shifted by a predetermined distance in one radial direction from the center of a groove, while another part of the identification signal area is shifted by the same distance in the opposite radial direction from the center of the groove. A land/groove polarity of a sector is determined by the polarity of a tracking error signal and the order of the polarities during reproduction of an identification signal.

公开(公告)号：US06396799B1

公开(公告)日：2002-05-28

申请号：US09637080

申请日：2000-08-11

申请人： Masato Nagasawa ,  Kazuhiko Nakane ,  Tsuyoshi Katayama ,  Kouichi Komawaki

发明人： Masato Nagasawa ,  Kazuhiko Nakane ,  Tsuyoshi Katayama ,  Kouichi Komawaki

IPC分类号： G11B724

CPC分类号： G11B19/247 ,  G11B7/00718 ,  G11B7/00745 ,  G11B7/013 ,  G11B7/08517 ,  G11B7/08541 ,  G11B7/0901 ,  G11B7/0938 ,  G11B19/12 ,  G11B20/1258 ,  G11B20/1426 ,  G11B27/19 ,  G11B27/3027 ,  G11B2220/20

摘要： In an optical disk having information recording tracks in the form of land and groove tracks, the disk is divided into a plurality of annular zones, each revolution of the information recording track belongs to one of the zones, and each revolution of the information recording track is divided into a plurality of sectors. A header portion is provided at the head of each sector and includes multiple recognition patterns which are each formed of a sequence of pits. A recognition pattern has a pattern which is not used as a pattern for data or addresses in the information recording part. The disk may be of a land/groove single-spiral configuration. The header portion for each sector may have a plurality of sub-headers, including an address of the sector, and first and second recognition patterns. The address of the sector and the first recognition pattern may be shifted in one radial direction by half a track pitch and the second recognition pattern shifted in the other radial direction by half a track pitch.

摘要翻译： 在具有信息记录轨迹的光盘中，盘被分成多个环形区域，信息记录轨道的每转都属于其中一个区域，信息记录道的每转 被划分为多个扇区。 标题部分设置在每个扇区的头部，并且包括多个识别图案，每个识别图案由一系列凹坑形成。 识别图案具有不用作信息记录部分中的数据或地址的图​​案的图案。 盘可以是槽脊/凹槽单螺旋构型。 每个扇区的报头部分可以具有多个子报头，包括扇区的地址，以及第一和第二识别模式。 扇区的地址和第一识别图案可以在一个径向上移动半个轨道间距，并且第二识别图案在另一个径向方向上移动半个轨道间距。

公开(公告)号：US06201775B1

公开(公告)日：2001-03-13

申请号：US09332071

申请日：1999-06-14

申请人： Kazuhiko Nakane ,  Hiroyuki Oohata ,  Masato Nagasawa ,  Kenji Gotoh ,  Yoshinobu Ishida

发明人： Kazuhiko Nakane ,  Hiroyuki Oohata ,  Masato Nagasawa ,  Kenji Gotoh ,  Yoshinobu Ishida

IPC分类号： G11B700

CPC分类号： G11B27/19 ,  G11B7/00718 ,  G11B7/00745 ,  G11B7/0901 ,  G11B7/0938 ,  G11B7/0948 ,  G11B20/1217 ,  G11B27/3027 ,  G11B2020/1232 ,  G11B2020/1239 ,  G11B2020/1265 ,  G11B2020/1268 ,  G11B2020/1274 ,  G11B2020/1292 ,  G11B2220/20 ,  G11B2220/216 ,  G11B2220/2525

摘要： The invention provides an optical disk medium having a recording spiral formed by connecting groove tracks and land tracks alternately, and permitting detection of a connecting point between a groove track and a land track reliably is provided, and a method of tracking the optical disk medium and an optical disk drive apparatus for driving the optical disk medium. One part of an identification signal area is shifted by a predetermined distance in one radial direction from the center of a groove, while another part of the identification signal area is shifted by the same distance in the opposite radial direction from the center of the groove. A land/groove polarity of a sector is determined by the polarity of a tracking error signal and the order of the polarities during reproduction of an identification signal.

摘要翻译： 本发明提供一种光盘介质，其具有通过交替地连接槽轨道和槽脊轨道而形成的记录螺旋，并且可靠地检测槽轨道和岸台轨道之间的连接点，以及跟踪光盘介质和 用于驱动光盘介质的光盘驱动装置。 识别信号区域的一部分从凹槽的中心沿一个径向偏移预定距离，而识别信号区域的另一部分在与凹槽的中心相反的径向方向上偏移相同的距离。 扇区的平面/凹槽极性由跟踪误差信号的极性和识别信号再现期间的极性的顺序决定。