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1. 发明专利

JP2002133768A ELECTRONIC COMPUTER SYSTEM AND CONTROL METHOD FOR ELECTRONIC COMPUTER SYSTEM 失效
公开(公告)号：JP2002133768A
公开(公告)日：2002-05-10
申请号：JP2000320947
申请日：2000-10-20
申请人： HITACHI LTD
发明人： FUKUSHIMA AKIO , SHIMAGAMI KAZUTO , IKEDA EIJI , KIMURA HIROYUKI
IPC分类号： G06F12/14 , G06F21/24 , G10L11/00 , G11B20/10 , H04N5/765 , H04N5/781 , H04N5/91 , H04N5/92
摘要： PROBLEM TO BE SOLVED: To provide an electronic computer system and a control method for the electronic computer system capable of preventing a user from violating the Copyright Protection Act by intentionally or unintentionally generating a copy. SOLUTION: This electronic computer system is provided with data reproduction control means 2 and 3 reproducing the data stored on an information storage medium 1, a storage control means 5 storing the reproduced main data on a data storage means 4, an auxiliary data detecting means 10 detecting the auxiliary data embedded in the reproduced data, and a central process control means 7 controlling the storage control means to interrupt the reproduction of data from the information storage medium, interrupt the copying and storage of the main data on the data storage means, and erase the main data being copied and stored on the data storage means if the detected auxiliary data are determined to correspond to copy prohibition when the reproduced main data are copied and stored on the data storage means.

2. 发明专利

JP2001357601A OPTICAL DISK DEVICE AND ITS DISK MOTOR CONTROLLING METHOD 失效
公开(公告)号：JP2001357601A
公开(公告)日：2001-12-26
申请号：JP2000184564
申请日：2000-06-15
申请人： HITACHI LTD
发明人： IKEDA EIJI
IPC分类号： H04N5/85 , G11B19/02 , G11B19/28 , G11B20/10
摘要： PROBLEM TO BE SOLVED: To provide the controlling method of the disk motor of an optical disk device, which discriminates contents recorded in a DVD disk, controls disk rotating speed, reduces power consumption and suppresses vibration and noise, which follow disk rotation. SOLUTION: It is discriminated whether the content recorded it the DVD disk is a video content or not from the volume structure of the UDF-Bridge format of the DVD disk, copywrite management information (CPR-MAI) recorded in a read-in area or copywrite management information (CPR-MAI) recorded in the respective rector heads of a data area. The rotating speed of the disk is controlled based on the discriminated result.

3. 发明专利

JP2001135009A OPTICAL DISK DEVICE AND ITS CONTROL METHOD 失效
公开(公告)号：JP2001135009A
公开(公告)日：2001-05-18
申请号：JP31333599
申请日：1999-11-04
申请人： HITACHI LTD
发明人： FUKUSHIMA AKIO , KAWAMAE OSAMU , IKEDA EIJI
IPC分类号： G06F1/32 , G06F3/06 , G06F3/08 , G11B7/004 , G11B19/00
摘要： PROBLEM TO BE SOLVED: To reduce power consumption in an ATA/ATAPI interface part being a circuit block performing the processing returning from a low power consumption state to a steady operation state or a device controlling microcomputer, etc., since they are required to always receive/analyze a command in conventional technique. SOLUTION: In this device, only a first circuit block required for receiving the command from a host computer is operated in the low power consumption state, and another second circuit block required to return processing is made the low power consumption state. The return to the steady operation state of the second circuit block is performed only when the first circuit block judges that the need to start the second circuit block exists.

4. 发明专利

JP2000067509A DISK DEVICE 失效
公开(公告)号：JP2000067509A
公开(公告)日：2000-03-03
申请号：JP23305998
申请日：1998-08-19
申请人： HITACHI LTD
发明人： TAJIMA HISANOBU , ONO KAZUHIKO , IKEDA EIJI , IMAI TAKESHI , IWATANI TAKAO
IPC分类号： G11B19/12 , G11B7/00 , G11B7/004
摘要： PROBLEM TO BE SOLVED: To provide a disk device capable of shortening the time required for preparatory operation by carrying out the preparatory operation for efficient data reading. SOLUTION: The disk device which is capable of reading the data from a disk of a first diameter and a disk of a second diameter longer than this first diameter is so constituted that the information on the data recording quantity is read from the first or second disk and that the discrimination operation as to whether the disk of the first diameter or the disk of the second diameter is not carried out when judgment is made that the data recording quantity exceeds the data recording quantity recordable on the disk of the first diameter.

5. 发明专利

JPH11339280A DISK DEVICE AND ZONE DISCRIMINATING METHOD OF DISK 失效
公开(公告)号：JPH11339280A
公开(公告)日：1999-12-10
申请号：JP14870998
申请日：1998-05-29
申请人： HITACHI LTD
发明人： MINODA HIROSHI , ONO KAZUHIKO , IKEDA EIJI , SHOJI TOSHIRO
IPC分类号： G11B7/085 , G11B19/02
摘要： PROBLEM TO BE SOLVED: To reduce latter processing time corresponding to the amount of time required to obtain a PID information by discriminating the zone, in which irradiating light beams are positioned based on the signals obtained from a disk, without reading the physical addresses on the disk having plural zones. SOLUTION: While a disk is rotated, a zone in which irradiated light beams are located, is discriminated. If the zone is not located in a target zone, it is returned to a seek processing and an objective lens is moved so that the target zone is irradiated with the beam again. If the irradiated light beams are located in the target zone, the setting of a disk rotation is a waited, a timer start is conducted to monitor the time out of the PID information acquisition and a PID fetch is conducted. Since whether the objective lens is located at an objective zone or not is decided prior to the setting of a disk rotational speed during a seek, a zone discrimination is made prior to the acquisition processing of the PID information, the moving time to a next seek is reduced when the lens is not located at an objective zone.

6. 发明专利

JPH1079126A ACCESSING METHOD FOR OPTICAL DISK DEVICE 失效
公开(公告)号：JPH1079126A
公开(公告)日：1998-03-24
申请号：JP3882697
申请日：1997-02-24
申请人： HITACHI LTD
发明人： ONO KAZUHIKO , IKEDA EIJI , MINODA HIROSHI , FUKUSHIMA AKIO , SHIOYAMA HIROAKI , INOUE SHIGEKI
IPC分类号： G11B7/085 , G11B7/004 , G11B7/007
摘要： PROBLEM TO BE SOLVED: To move an optical pick-up to a target position at a high speed, by moving an objective lens so as to focus on a target layer when a recording layer of target information differs, and then calculating the distance between two physical positions, that is, the current position and the target position. SOLUTION: First, the position of an optical pick-up for reading current position information recording on a disk is checked. Then, it is judged whether the recording position of target information is equal to the current recording layer. When the recording position of target information is not equal to the current recording layer, an objective lens is moved in a direction perpendicular to the disk so as to focus on the target layer. Then, the current position of the optical pick-up is checked. The current position and the target position are converted to physical positions on the disk, and the distance between the relative two points is calculated. Thus, the optical pick-up may be moved to the target position at a high speed without reading the position information recorded on the disk during moving. After the movement, the pick-up is caused to access the target information recording position while the position information recorded on the disk is checked. Thus, high-speed access is easily carried out.

7. 发明专利

JPH01127593A COMPANION FOR PASSENGER CONVEYOR 失效
公开(公告)号：JPH01127593A
公开(公告)日：1989-05-19
申请号：JP28333487
申请日：1987-11-11
申请人： HITACHI LTD
发明人： SAITO CHUICHI , IKEDA EIJI
IPC分类号： B66B29/08
摘要： PURPOSE: To ensure the safety of the passengers on a passenger conveyor comprising a wide tread by longitudinally mounting a guide rack for partitioning a width of the tread into halves, on a central portion in the width direction of a floor plate of a getting on/off port positioned at an end of a handrail. CONSTITUTION: A longitudinal guide rack 5 is standed on a central portion in the width direction of a floor plate 4 of a getting on/off port. The guide rack 5 has a height of about 1 m, and is longitudinally mounted and fixed on the floor plate 4 with a length two-three times as long as the tread 1 for dividing the passengers into left and right sides. Whereby the passengers can be guided to a safety position on the getting on/off port, the bodies of the passengers are located at a moving handrail 2 side, and a baggage or the like is placed on the central portion as the space on the tread 1, which does not interfere the passage. Particularly on the part of the floorboard 4 of the getting on/off port, it is effective that the passangers can easily grasp the moving handrail 2 by the guide rack 5, because the posture of the passengers becomes unstable when the passengers ride on a moving section from a fixed section. Accordingly the safety can be ensured on the passenger conveyor having the wide tread.

8. 发明专利

JPS5851875B2 JPS5851875B2 - 失效
公开(公告)号：JPS5851875B2
公开(公告)日：1983-11-18
申请号：JP12158776
申请日：1976-10-11
申请人： Hitachi Ltd
发明人： MASUDA KATSUTARO , IKEDA EIJI
IPC分类号： B66B13/18 , B66B5/00 , B66B13/28 , B66B13/30

9. 发明专利

JPS517653A 失效
公开(公告)号：JPS517653A
公开(公告)日：1976-01-22
申请号：JP7917674
申请日：1974-07-12
申请人： HITACHI LTD
发明人： IWASAKA TATSUO , IKEDA EIJI
IPC分类号： B66B1/18 , B66B1/14

10. 发明专利

JPH11203049A DRIVE CONNECTION SYSTEM AND DRIVE CONNECTION SYSTEM FOR OPTICAL INFORMATION RECORDING MEDIUM 失效
公开(公告)号：JPH11203049A
公开(公告)日：1999-07-30
申请号：JP541798
申请日：1998-01-14
申请人： HITACHI LTD
发明人： ITO TAMOTSU , SAKURAMOTO YUKARI , IKEDA EIJI
IPC分类号： G06F3/06 , G11B7/00 , G11B19/02 , G11B20/00
摘要： PROBLEM TO BE SOLVED: To disable a normal operation when a drive is connected to another system while using a general-purpose interface without mounting any expensive IC chip dedicated to certification by connecting the drive to a host through performing software processing to a command and a parameter. SOLUTION: In an optical disk reproducing device, a DVD drive 1 and a main body 2 of DVD reproducing device are electrically connected by a connector 3 using a general-purpose interface. In this connector connecting 3, only the paired DVD drive 1 and main body 2 of DVD reproducing device can be connected by software processing without using any IC chip dedicated to certification. Namely, when another system is connected to the general-purpose interface 3, the DVD drive 1 can not be normally operated. Besides, the DVD drive 1 can be normally operated only by the combination of the specified DVD drive 1 and the main body 2 of DVD reproducing device having a specified decoder part.

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