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公开(公告)号：JPH04120909A
公开(公告)日：1992-04-21
申请号：JP24002590
申请日：1990-09-12
Applicant: SONY CORP
Inventor： KAWASHIMA TETSUJI
Abstract: PURPOSE:To automatically fix an output value without degrading a frequency characteristic or a phase characteristic in the case of a high frequency input by changing the reference voltage of an A/D converter corresponding to the level of an analog input signal inputted to the A/D converter. CONSTITUTION:The level of an input signal Sa shown by a lateral axis is stepwise quantized and converted to an output data SD. However, when the level of the input signal Sa is low, for example, this stepwise quantizing width E is controlled to be narrow as shown by a single dotted line E1 and when the level of the input signal Sa is high, this stepwise quantizing width E is controlled to be wide as shown by a double dotted line E2. Thus, since a control means 12 controls the reference voltage of an A/D converter 13 so as to change the quantizing width of the A/D converter 13 corresponding to the amplitude of the input analog signal, the output data of the A/D converter 13 can be automatically controlled to be an almost constant value at all times.
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公开(公告)号：JPH04117648A
公开(公告)日：1992-04-17
申请号：JP23591690
申请日：1990-09-07
Applicant: SONY CORP
Inventor： KAWASHIMA TETSUJI
IPC: G11B11/10 , G11B5/02 , G11B11/105
Abstract: PURPOSE:To enable an overwrite at a high speed access and at a low current consumption by arranging a magnetic head to a disk radial direction with a prescribed pitch, moving an entire magnetic head array in a specified range according to the movement of an optical head, and switching the magnetic head unit electrically. CONSTITUTION:The plural magnetic head units having the length (w) of an effective recording magnetic field which is impressed to an magneto-optical disk 11 (the length along the moving direction of an optical head) are arranged by a prescribed pitch (p) along the moving direction of an optical head 2, so that a magnetic head array 14 can constituted. Then, the entire magnetic head array 14 is moved at least in a (p-w) range along the moving direction according to the movement of the optical head 2, and magnetic heads 14a-f are electrically switched into an operating state at a position according to the optical head 2 of the magnetic head array 14. Thus, the overwrite can be attained at the low current consumption, and the decrease of responsibility can be prevented by supressing the moving quantity of the magnetic head.
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公开(公告)号：JPH02306451A
公开(公告)日：1990-12-19
申请号：JP12609789
申请日：1989-05-19
Applicant: SONY CORP
Inventor： KAWASHIMA TETSUJI , WATANABE SATORU
IPC: G11B11/10 , G11B11/105
Abstract: PURPOSE:To attain the approximation to a magneto-optical disk and to hold a magnetic head in a simple constitution by controlling the position of the magnetic head to the magneto-optical disk based on the level of a reproduction signal. CONSTITUTION:A prescribed magnetic field obtained from a magnetic head 30 is applied to a magneto-optical disk 12. At the same time, the disk 12 is irradiated by a light beam LA1 outgoing from an optical head 14. Thus the desired information is recorded on the disk 12. Then the head 30 is held at a reference position and the signal recorded on the disk 12 is reproduced. Based on the level of the obtained reproduction signal SRF, the position of the head 30 is controlled to the disk 12. As a result, the signal SRF is set at a prescribed level. Thus the head 30 can be set close to the disk 12 in a simple constitution.
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公开(公告)号：JP2011210367A
公开(公告)日：2011-10-20
申请号：JP2011140249
申请日：2011-06-24
Inventor： KAWASHIMA TETSUJI , SHISHIDO YUKIO
Abstract: PROBLEM TO BE SOLVED: To suppress deterioration in access performance and a data transfer rate, by suitably selecting CLV or CAV for each disk when performing recording.SOLUTION: A recording device includes: a laser light radiating unit for radiating laser light to the loaded disk; a reflection light detection unit for detecting a light quantity of reflection light from the disk; a driving unit for rotation-driving the disk; a drive controller for determining whether the disk is a rewritable disk or not based on the light quantity of reflection light, which is detected by the reflection light detection unit, and controlling the driving unit to perform rotation driving in CAV or CLV based on the determination result; and a recording controller for implementing recording to the disk in a state of being rotation-driven by the drive controller.
Abstract translation: 要解决的问题：通过在执行记录时适当地选择每个盘的CLV或CAV来抑制存取性能和数据传送速率的劣化。解决方案：记录装置包括：激光发射单元，用于将激光照射到装载的盘 ; 反射光检测单元，用于检测来自盘的反射光的光量; 用于旋转驱动盘的驱动单元; 基于由所述反射光检测单元检测到的反射光的光量来确定所述盘是否为可重写盘的驱动控制器，以及基于所述确定来控制所述驱动单元执行CAV或CLV的旋转驱动 结果; 以及记录控制器，用于在由驱动控制器旋转驱动的状态下实现对盘的记录。
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135.发明专利
公开(公告)号：JP2006313618A
公开(公告)日：2006-11-16
申请号：JP2006162773
申请日：2006-06-12
Inventor： KAWASHIMA TETSUJI , SHISHIDO YUKIO
Abstract: PROBLEM TO BE SOLVED: To correct additional information embedded in content data while reducing a load on hardware.
SOLUTION: The predetermined amount of content data is temporarily stored in a buffer means, additional information embedded in the content is detected from the content data temporarily stored in the buffer means, the content of the detected additional information is determined, and the type of the content data is discriminated. When the content data is determined to be a recordable content, the content data is recorded in a predetermined medium. When the content data is determined to inhibit recording, the recording of the content data in the medium is prevented from being carried out. When the content data is discriminated to be data of a predetermined format, the detection and the determination are made to limit recording of the data in the medium.
COPYRIGHT: (C)2007,JPO&INPITAbstract translation: 要解决的问题：纠正嵌入在内容数据中的附加信息，同时减少硬件上的负载。 解决方案：将预定量的内容数据临时存储在缓冲器装置中，从临时存储在缓冲器装置中的内容数据中检测嵌入在内容中的附加信息，确定检测到的附加信息的内容， 区分内容数据的类型。 当内容数据被确定为可记录内容时，将内容数据记录在预定介质中。 当内容数据被确定为禁止记录时，防止内容数据在介质中的记录被执行。 当将内容数据区分为预定格式的数据时，进行检测和确定以限制媒体中数据的记录。 版权所有（C）2007，JPO＆INPIT
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Patent Agency Ranking136.发明专利
公开(公告)号：JP2005071466A
公开(公告)日：2005-03-17
申请号：JP2003299546
申请日：2003-08-25
Inventor： MIYAKE KUNIHIKO , KAWASHIMA TETSUJI
CPC classification number: G11B19/125
Abstract: PROBLEM TO BE SOLVED: To decide the system of a disk more securely without adding any special device to decide the system of the optical disk.
SOLUTION: In a step S12, a control computer acquires a wobble signal. In a step S13, the control computer computes the mean value of cycles of a binarized wobble signal and the dispersion of cycles of the binarized wobble signal. In a step S14, the control computer decides whether the mean value of cycles of the binarized wobble signal satisfies the standard of DVD-RW and the dispersion of cycles of the binarized wobble signal is sufficiently small. This invention is applicable to an optical disk recording and reproducing apparatus which writes data to an optical disk or reads data out of the optical disk.
COPYRIGHT: (C)2005,JPO&NCIPIAbstract translation: 要解决的问题：更安全地决定磁盘的系统，而不需要添加任何专门的设备来决定光盘的系统。 解决方案：在步骤S12中，控制计算机获取摆动信号。 在步骤S13中，控制计算机计算二值化摆动信号的周期平均值和二值化摆动信号的周期的偏差。 在步骤S14中，控制计算机判定二值化摆动信号的周期的平均值是否满足DVD-RW的标准，并且二值摆动信号的周期的偏差足够小。 本发明适用于向光盘写入数据或从光盘读出数据的光盘记录和再现装置。 版权所有（C）2005，JPO＆NCIPI
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公开(公告)号：JP2005018815A
公开(公告)日：2005-01-20
申请号：JP2003177930
申请日：2003-06-23
Inventor： SHISHIDO YUKIO , KAWASHIMA TETSUJI
IPC: G11B20/12 , G11B7/004 , G11B7/0045 , G11B7/007
Abstract: PROBLEM TO BE SOLVED: To achieve both of the securement of interchangeability and the securement of write once ability in a recordable multi-layer disk. SOLUTION: In a write once disk recording medium having a plurality of recording layers, specified areas on inner peripheries of respective 2nd and succeeding recording layers are subjected to guard data recording by a specified timing and settled to be guard areas. To obtain reproduction compatibility, the control information (lead in data) are recorded on the inner peripheral side of at least a 1st recording layer (layer 0), but the 2nd recording layer (layer 1) and succeeding recording layers are also subjected to recording by the formation of the guard area. That is, each recording layer is subjected to recording in the specified area of the inner peripheral side of the disk wherein the disk discrimination process is carried out by a device used exclusively for reproduction, then the device used exclusively for reproduction does not erroneously identify the disk, thereby, the unrecorded area can be left in the area where user data are recordable. COPYRIGHT: (C)2005,JPO&NCIPI
Abstract translation: 要解决的问题：实现可互换性的确保和在可记录多层盘中的一次写入能力的确保。 解决方案：在具有多个记录层的一次写入盘记录介质中，在相应的第二和后续记录层的内周上的特定区域在指定的时间进行保护数据记录并且被设置为保护区域。 为了获得再现兼容性，控制信息（数据导入）被记录在至少第一记录层（层0）的内周侧，但是第二记录层（层1）和后续记录层也被记录 通过形成守卫区。 也就是说，每个记录层在盘的内周侧的指定区域中进行记录，其中盘鉴别处理由专门用于再现的装置执行，则专门用于再现的装置不会错误地识别 因此，未记录区域可以留在用户数据可记录的区域。 版权所有（C）2005，JPO＆NCIPI
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公开(公告)号：JP2004362726A
公开(公告)日：2004-12-24
申请号：JP2003294262
申请日：2003-08-18
Inventor： KAWASHIMA TETSUJI , SHISHIDO YUKIO , KAWAKAMI HIROO
IPC: G11B7/24 , G11B7/00 , G11B7/0045 , G11B7/007 , G11B20/12 , G11B27/034 , G11B27/32
CPC classification number: G11B27/329 , G11B7/00745 , G11B7/24038 , G11B20/1217 , G11B27/034 , G11B2007/0013 , G11B2020/1235 , G11B2220/216 , G11B2220/218 , G11B2220/235 , G11B2220/2562
Abstract: PROBLEM TO BE SOLVED: To improve compatibility and feasibility in use in a recordable type multi-layer disk. SOLUTION: A region for recording interlayer folding back position information is set on a recording medium (for example, "End sector number in Layer 0" or a session item type 3). In response to a fact that recording on a certain recording layer reaches a maximum recording range or that data recording advances from a certain recording layer to a next recording layer, interlayer folding back position information is recorded on the recording medium. When an advancement of the data recording to another recording layer is performed at a stage prior disk closing or session closing or when it is predicted that such an advancement of the data recording occurs afterwards, the interlayer folding back position information is recorded. Also where the disk is of the type for which multi-session recording is performed, the interlayer folding back position information is recorded with regard to a session in which folding back is performed. COPYRIGHT: (C)2005,JPO&NCIPI
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公开(公告)号：JP2002311975A
公开(公告)日：2002-10-25
申请号：JP2001117105
申请日：2001-04-16
Applicant: SONY CORP
Inventor： KAWASHIMA TETSUJI , SHISHIDO YUKIO
Abstract: PROBLEM TO BE SOLVED: To correct additional information embedded in contents data while reducing the load of hardware. SOLUTION: A prescribed amount of inputted contents data are temporarily stored in a buffer means. The additional information embedded in the contents is detected from the contents data stored temporarily in the buffer means. The contents of the detected additional information are judged, and the contents data are recorded on a prescribed medium when judged as recordable contents data. The contents data are not recorded on the medium when judged as contents data whose recording is prohibited. When it is judged that the additional information needs to be corrected, the corresponding portion of the stored data in the buffer means is corrected in a state stored in the buffer means.
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公开(公告)号：JP2002184116A
公开(公告)日：2002-06-28
申请号：JP2000382368
申请日：2000-12-15
Applicant: SONY CORP
Inventor： TSUKADA HIROSHI , KAWASHIMA TETSUJI , MIYAKE KUNIHIKO
Abstract: PROBLEM TO BE SOLVED: To reproduce correctly recorded signals even when a defect is generated on an optical disk. SOLUTION: When the succeeding ECC(error-correcting code) block of an ECC block number '3' is defined as a defective block as shown in the figure C on an optical disk using a defect management system, this defective block and an ECC block which is positioned at the next position and which is shown with oblique lines are registered in a defect list as defective blocks. When the playing of the optical disk is performed by using an optical disk device performing a servo operation while utilizing recorded signals, at the time of reproducing an ECC block number '4' by skipping the defective blocks while avoiding defective positions based on the defect list, even when the optical disk device starts trace at the preceding defective block of the ECC block number '4', the device can start correctly the trace because there is not defect in this defective block and, thus, the device can reproduce the signal of the ECC block number '4' from the leading position.
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