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11.发明公开Information recording medium and recording/reproducing apparatus using the same 失效Informationsaufzeichnungsmedium und dasselbe verwendendes Aufzeichnungs /-Wiedergabegerät。
公开(公告)号：EP0357049A2
公开(公告)日：1990-03-07
申请号：EP89116030.1
申请日：1989-08-30
CPC分类号： G11B7/00736 , G11B20/1883 , G11B27/3027 , G11B2220/20
摘要： An information recording medium such as an optical recording medium or an optical disk comprises a first defect managing region into which an initial defective region is registered; and a second defect managing region into which a defective region occurring after the registration of the initial defective region into the first defect managing region is registered. In a recording and reproducing apparatus operating on such an information recording medium, identification information is reproduced from each of sectors in the first and second defect managing regions, the identification information representing whether the sector belongs to the first defect managing region or the second defect managing region. Defect managing information is recorded into and erased from each of the sectors in accordance with the reproduced identification information.
摘要翻译： 诸如光学记录介质或光盘的信息记录介质包括其中登记有初始缺陷区域的第一缺陷管理区域; 以及第二缺陷管理区域，其中登记了将初始缺陷区域注册到第一缺陷管理区域之后出现的缺陷区域。 在对这种信息记录介质进行操作的记录和再现装置中，从第一和第二缺陷管理区域中的每个扇区再现识别信息，表示扇区是属于第一缺陷管理区域还是第二缺陷管理区域的识别信息 地区。 根据再现的识别信息，缺陷管理信息被记录并从每个扇区中擦除。
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12.发明授权Track searching arrangement for an optical information recording and reproducing apparatus 失效用于光信息记录和再现设备的跟踪搜索安排
公开(公告)号：EP0048441B1
公开(公告)日：1986-09-03
申请号：EP81107323.8
申请日：1981-09-16
发明人： Koishi, Kenji , Yoshida, Tomio , Satoh, Isao , Harigae, Shunji
CPC分类号： G11B7/0953 , G11B7/08541
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13.发明公开
公开(公告)号：EP0072704A3
公开(公告)日：1984-06-06
申请号：EP82304360
申请日：1982-08-18
发明人： Satoh, Isao , Yoshida, Tomio , Ohara, Shunji , Koishi, Kenji
CPC分类号： G11B17/005 , G11B27/034 , G11B27/036 , G11B27/11 , G11B27/19 , G11B27/24 , G11B27/329 , G11B2220/20 , G11B2220/216 , G11B2220/218 , G11B2220/65
摘要： In an optical disc (1) having a file region (31) and a directory region (30) for carrying various pieces of information or data, one or more designated information can be erased by irradiating a laser light beam on a corresponding region in the file region where the light beam is modulated by a superposing writing signal which may be a d.c. or a predetermined a.c. signal. When it is intended to renew the information, designated information is first read out and stored in an external memory prior to performing superposing writing. Meanwhile, the data is renewed and is then written on an unused region in the file region. The directory of the renewed data region is also written so that the renewed information will be read out by searching the new directory. In another embodiment of the invention, the . information in the file region is not erased to renew the same, but its directory is erased by superposing writing. A new directory for a renewed information, which is written in unused region in the same manner as the above, is written so that the renewed information can be read out by using the new directory. When reproducing, an envelope of the reproduced signal is detected to see whether information can be read out or not. Thus, erased information is skipped to reproduce only unerased information.
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公开(公告)号：EP0082357A1
公开(公告)日：1983-06-29
申请号：EP82111047.5
申请日：1982-11-30
发明人： Ohara, Shunji , Yoshida, Tomio , Satoh, Isao , Koishi, Kenji
CPC分类号： G11B7/126 , H01S5/06832
摘要： A system for driving a semiconductor laser which is especially adapted for use with an optical recording and reproducing device is disclosed. In the write mode the power of laser light emitted from the semiconductor laser is so raised above a threshold or critical level that the laser beam focused on the surface of a recording medium can cause physical, chemical or electromagnetical changes thereof, but in the readout or reproduction mode, the power of laser light is lowered than the threshold or critical level and focused on the recording medium. A laser light power control loop is provided which is enabled or energized only in the readout or reproduction mode, so that the laser light can be maintained at a predetermined level. On the other hand, this control loop is disabled in the write or recording mode so that a predetermined value of current is superposed on the readout current sampled and held immediately the write or recording mode is initiated and the current thus superposed upon each other flows into the semiconductor laser, whereby the power of laser light can be rapidly raised from the readout or reproducing laser light power to the write or recording laser light power.
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15.发明公开
公开(公告)号：EP0072704A2
公开(公告)日：1983-02-23
申请号：EP82304360.9
申请日：1982-08-18
发明人： Satoh, Isao , Yoshida, Tomio , Ohara, Shunji , Koishi, Kenji
CPC分类号： G11B17/005 , G11B27/034 , G11B27/036 , G11B27/11 , G11B27/19 , G11B27/24 , G11B27/329 , G11B2220/20 , G11B2220/216 , G11B2220/218 , G11B2220/65
摘要： In an optical disc (1) having a file region (31) and a directory region (30) for carrying various pieces of information or data, one or more designated information can be erased by irradiating a laser light beam on a corresponding region in the file region where the light beam is modulated by a superposing writing signal which may be a d.c. or a predetermined a.c. signal. When it is intended to renew the information, designated information is first read out and stored in an external memory prior to performing superposing writing. Meanwhile, the data is renewed and is then written on an unused region in the file region. The directory of the renewed data region is also written so that the renewed information will be read out by searching the new directory. In another embodiment of the invention, the . information in the file region is not erased to renew the same, but its directory is erased by superposing writing. A new directory for a renewed information, which is written in unused region in the same manner as the above, is written so that the renewed information can be read out by using the new directory. When reproducing, an envelope of the reproduced signal is detected to see whether information can be read out or not. Thus, erased information is skipped to reproduce only unerased information.
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公开(公告)号：EP0406891A1
公开(公告)日：1991-01-09
申请号：EP90112947.8
申请日：1990-07-06
IPC分类号： G01P9/04
CPC分类号： G01C19/5607 , G01P1/006
摘要： An angular velocity sensor (10) includes a pair of vibratory piezoelectric detecting elements (11a, 11b) whose detecting planes (D1, D2) are disposed in symmetry about a plane (S) containing the sense axis (18) and out of right-angled orientation with respect to this plane (S). The detecting elements thus arranged assume a widely spread or flattened V-shaped configuration as viewed from above. Output signals of opposite polarities received from the respective detecting elements are weighted respectively and added together so as to cancel out unwanted leak component signals. Thus, leak component signals resulting from assembling tolerances can be canceled can be offset. In this instance, if the characteristics of two sensor elements (17a, 17b) each including one of the detecting element are fully equivalent, a leak component signal dependent on a disturbing inertial force can simultaneously be canceled out. With this construction, the variation of the offset voltage can be reduced even when the sensor is subjected a great change in environmental conditions including temperature.
摘要翻译： 角速度传感器（10）包括一对振动压电检测元件（11a，11b），其检测平面（D1，D2）围绕包含感测轴线（18）的平面（S）对称地设置， 相对于该平面（S）的倾斜取向。 如此布置的检测元件呈现从上方观察到的广泛扩展或扁平的V形构造。 从相应的检测元件接收到的相反极性的输出信号被分别加权并相加在一起以消除不想要的泄漏分量信号。 因此，可以抵消由组装公差产生的泄漏分量信号。 在这种情况下，如果每个包括检测元件中的一个的两个传感器元件（17a，17b）的特性完全等效，则可以同时消除取决于干扰惯性力的泄漏分量信号。 通过这种结构，即使当传感器经受包括温度在内的环境条件的巨大变化时，偏移电压的变化也可以减小。
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公开(公告)号：EP0099123B1
公开(公告)日：1990-11-28
申请号：EP83106877.0
申请日：1983-07-13
发明人： Ohara, Shunji , Yoshida, Tomio , Satoh, Isao , Koishi, Kenji
CPC分类号： G02B27/283 , G11B7/08 , G11B7/12
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公开(公告)号：EP0081138B1
公开(公告)日：1987-10-21
申请号：EP82110852.9
申请日：1982-11-24
发明人： Satoh, Isao , Yoshida, Tomio , Ohara, Shunji , Koishi, Kenji
CPC分类号： G11B7/24085 , G11B7/00745 , G11B7/08517 , G11B27/19 , G11B27/24 , G11B27/3027 , G11B27/32 , G11B2220/20
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公开(公告)号：EP0082357B1
公开(公告)日：1986-08-20
申请号：EP82111047.5
申请日：1982-11-30
发明人： Ohara, Shunji , Yoshida, Tomio , Satoh, Isao , Koishi, Kenji
CPC分类号： G11B7/126 , H01S5/06832
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公开(公告)号：EP0064196B1
公开(公告)日：1986-07-23
申请号：EP82103219.0
申请日：1982-04-16
发明人： Sato, Isao , Yoshida, Tomio , Ohara, Shunji , Koishi, Kenji
CPC分类号： G11B20/1217 , G11B7/00745 , G11B7/013 , G11B17/005 , G11B20/1419 , G11B20/1426 , G11B27/19 , G11B27/3027 , G11B2020/10888 , G11B2220/2537
摘要： A modulation and demodulation system for an optical data recording and reproducing apparatus is disclosed in which, in an optical disc having an optical guide track and capable of recording and reproducing optically, the guide track is divided into a plurality of data sectors and the recording or reproduction or reading is effected by data sector. The modulation system for the data field for recording the data is different from that for the identification field containing identification data such as a track address and a sector address in such a way that the identification field is reproduced at high reliability and high demodulation speed while at the same time recording data at high density in the data field.
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