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61. 发明专利

JPH11219526A OPTICAL INFORMATION REPRODUCING DEVICE 失效
公开(公告)号：JPH11219526A
公开(公告)日：1999-08-10
申请号：JP2119998
申请日：1998-02-02
申请人： MITSUBISHI ELECTRIC CORP
发明人： TSUKAMOTO MANABU , SHIMAMOTO MASAMI , GOSHIMA KENJI , UMEYAMA TAKEHIKO , INOUE TAKEO
IPC分类号： G11B7/00 , G11B7/005 , G11B7/09
摘要： PROBLEM TO BE SOLVED: To reduce a circuit scale by performing a processing bringing the shape of a difference signal wavefrom analogously close to the shape of a sum signal at the time of reproducing first and second identification information areas which are arranged by being respectively displaced by a prescribed distance to an outer peripheral side and to an inner peripheral side with respect to the center of a track to make a wavefrom shaping circuit and succeeding blocks shareable both signals. SOLUTION: Polarities of the output (b) of a subtracting means 18 which receives the output of a bi-sected photodetector 135 reading first and second identification information being in an outer peripheral side and an inner peripheral side with respect to the center of a track are different around a zero level. A switching means 354 selects the one side of outputs (i)/(j) of non-inversion/inversion buffers 351/352 according to a discrimination gate signal (h) to be generated from the output (b) by a polarity changeover signal generating means 353 to make it an output (k). Since this output (k) and the output (a) of an adding means 16 become analogous waveforms in the point of the polarity, a signal changeover means 36 selects the output (a) or the output (b) according to a changeover signal (1) from a control gate generating means 25. Thus, the circuit of a waveform shaping means 37 and succeeding circuits are made shareable the outputs (a), (b).

62. 发明专利

JPH1040574A OPTICAL DISC MEDIUM 失效
公开(公告)号：JPH1040574A
公开(公告)日：1998-02-13
申请号：JP19339696
申请日：1996-07-23
申请人： MITSUBISHI ELECTRIC CORP
发明人： OHATA HIROYUKI , NAKANE KAZUHIKO , GOSHIMA KENJI , ISHIDA SADANOBU
IPC分类号： G11B20/12 , G11B7/007 , G11B7/24
摘要： PROBLEM TO BE SOLVED: To obtain an optical disc medium which can be excellently reproduced by both compact disc reproducing apparatus and DVD reproducing apparatus and assures compatibility. SOLUTION: Almost identical pieces of information are recorded to a plurality of information recording layers of different kinds of parameters such as track structure, modulation system, logical format and physical format, etc., and a plurality of information recording layers are capable of realizing multilayer recording in the thickness direction of the disc so that data can be read by a plurality of optical information reproducing apparatuses in different laser wavelengths and focus distances. Moreover, an information recording layer similar to the recording format of the compact disc is formed on the substrate of almost 1.2mm and moreover the information recording layer similar to the recording format of DVD is formed in the position where the thickness is almost 0.6mm, thereby the data can be reproduced by optical information reproducing apparatuses for both compact disc and DVD.

63. 发明专利

JPH1011762A OPTICAL DISK, AND OPTICAL DISK DRIVING DEVICE 失效
公开(公告)号：JPH1011762A
公开(公告)日：1998-01-16
申请号：JP16621896
申请日：1996-06-26
申请人： MITSUBISHI ELECTRIC CORP , MATSUSHITA ELECTRIC IND CO LTD
发明人： NAKANE KAZUHIKO , OHATA HIROYUKI , NAGASAWA MASAHITO , GOSHIMA KENJI , ISHIDA SADANOBU , SATO ISAO , OHARA SHUNJI , ISHIDA TAKASHI , TAKEMURA YOSHIYA
IPC分类号： G11B20/12 , G11B7/007 , G11B7/09 , G11B20/14 , G11B27/19 , G11B27/24 , G11B27/30
摘要： PROBLEM TO BE SOLVED: To provide an optical disk and its driving device capable of surely detecting a connecting point between a land track and a groove track and exactly correcting the tracking offset in an optical disk of a single spiral land/ groove format. SOLUTION: Physical address areas PID1, PID2, PID3, PID4 are recorded four times in a header area, PID1 and PID2 are arranged on the outer peripheral side displaced by a half of a track pitch from the center of a groove track, PID3 and PID4 are arranged on the inner peripheral side displaced by a half of a track pitch from the center of a groove track and they are made detectable by the difference signal in the radial direction. VFO areas at the heads of the respective PIDs are lengthened by PID1 and PID3, the correction of the tracking offset by means of a sum signal is enabled and the detection of the connection point between the land and the groove by means of the difference signal is enabled from the displacement of PID.

64. 发明专利

JPH09282777A OPTICAL DISK MEDIUM, DEVICE FOR RECORDING AND REPRODUCING THE SAME AND METHOD THEREFOR 失效
公开(公告)号：JPH09282777A
公开(公告)日：1997-10-31
申请号：JP9555596
申请日：1996-04-17
申请人： MITSUBISHI ELECTRIC CORP
发明人： OHATA HIROYUKI , NAKANE KAZUHIKO , GOSHIMA KENJI , ISHIDA SADANOBU
IPC分类号： G11B19/00 , G11B19/02
摘要： PROBLEM TO BE SOLVED: To enable continuous recording and reproducing without a waiting time attending upon a change in motor revolving speed at a zonal boundary when the continuity of time is requested for a recording and reproducing data in a video and an audio, etc., and to enhance the reliability of a recording and reproducing data when the recording and reproducing data is a computer program. SOLUTION: One or more tracks on the outer circumferential side of each zone 2 is or are specified as a transition area or transition areas 6. Then, when the time continuity is requested for the recording and reproducing data, disk revolving speeds under recording and reproducing in the transition areas 6 are set to fixed revolving speeds determined for this zone 2 and another one adjacent zone 2 on the outer circumferential side, respectively, and the recording and reproducing are carried out, and when the recording and reproducing data is requested for the reliability, the transition areas 6 are used as alternate areas 5.

65. 发明专利

JPH09251721A OPTICAL DISK MEDIUM AND OPTICAL DISK DEVICE 失效
公开(公告)号：JPH09251721A
公开(公告)日：1997-09-22
申请号：JP5612996
申请日：1996-03-13
申请人： MITSUBISHI ELECTRIC CORP
发明人： OHATA HIROYUKI , NAKANE KAZUHIKO , NAGASAWA MASAHITO , SUGANO HIROSHI , GOSHIMA KENJI , ISHIDA SADANOBU
IPC分类号： G11B20/10 , G11B7/00 , G11B7/004 , G11B20/12 , G11B27/00
摘要： PROBLEM TO BE SOLVED: To reduce the number of necessary memories and to reduce cost by distributing defect management areas for each zone in a disk having a large capacity and defect management information. SOLUTION: A disk definition structure DDS and primary and secondary defect lists PDL and SDL are provided as defect management areas in plural zones formed by dividing a disk 1. For recording, an optical head 3 is sent to the zones, the PDL and the SDL are read and reading results are recorded in a detect management information memory 6 by an information recording/ reproducing means 5. When the recording unit of an address position to be recorded is registered in the PDL, this is written in the recording unit of next address. When the recording unit is registered in the SDL, information is written in a replacing recording unit for a defect unit. After writing, when a detect sector is discovered, this is registered in the SDL and information to be recorded is recorded in a specified spare area. Thus, for a disk having large detect management information, a defect management region is allocated to each zone and thereby the number of necessary memories is reduced.

66. 发明专利

JPH0869248A DISK RECORDING/REPRODUCING DEVICE FOR TRAVELING OBJECT 失效
公开(公告)号：JPH0869248A
公开(公告)日：1996-03-12
申请号：JP20351794
申请日：1994-08-29
申请人： MITSUBISHI ELECTRIC CORP
发明人： MATSUI SHIGERU , GOSHIMA KENJI , HIRAI NOBUAKI , ISHIDA SADANOBU , HORINO TAKAYUKI , SAKAMOTO TADAYOSHI
IPC分类号： G09B29/00 , G01C21/00 , G08G1/0969 , G09B29/10
摘要： PURPOSE: To accelerate the scroll of a map display in a traveling object navigation device. CONSTITUTION: When the map display of the same position is scrolled plural times, and a traveling route is confirmed, a map address is stored in a map address storage area of a memory in an MD driver 9 like the order specified by map display means 5, 6, 8 according to the scroll operation of the map display when a first time traveling route is confirmed, and the map information is read out of a recording medium 9a in the order stored in a map address storage area when the traveling route after a second time is confirmed, and the same scroll operation as the time when the first time traveling route is confirmed is performed. Moreover, the operation which reading out the map information from the recording medium 9a and temporarily storing it in the storage area is performed preceding the specification of the map address by the map display means 5, 6, 8.

67. 发明专利

JPH07249190A DISK RECORDING AND REPRODUCING DEVICE FOR TRAVELLING OBJECT 失效
公开(公告)号：JPH07249190A
公开(公告)日：1995-09-26
申请号：JP3711294
申请日：1994-03-08
申请人： MITSUBISHI ELECTRIC CORP
发明人： HIRAI NOBUAKI , GOSHIMA KENJI , MATSUI SHIGERU , ISHIDA SADANOBU , HORINO TAKAYUKI , SAKAMOTO TADAYOSHI
IPC分类号： G09B29/10 , G01C21/00 , G06T1/00 , G06T11/60 , G08G1/0969 , G11B20/12
摘要： PURPOSE:To obtain a disk recording and reproducing device for a travelling object which is capable of smoothly executing a map information scroll operation at high speed and which is suitable for realizing a navigation device with a 'learning function' as against a route where the navigation operation is executed once. CONSTITUTION:A control means 5 which selects map information from an information recording medium based on the operation of a scroll key which designates the present position of the travelling object or a map information display area displayed in CRT 10 so as to reproduce it and also generates control information concerning the selected map information. Then, map information is selected from the reproduction exclusive area of a hybrid MD 17 based on the present position of a self vehicle or the operation of the scroll key so as to reproduce it, reproduced map information is temporarily sotred in RAM 8, it is recorded by a prescribed format adding control information of map information in the recording possible area of the hybrid MD 17 and map information is reproduced based on control information when the reproduction of the map information is designated.

68. 发明专利

JPH03152783A VIDEO/SOUND EDITING SYSTEM 失效
公开(公告)号：JPH03152783A
公开(公告)日：1991-06-28
申请号：JP29065089
申请日：1989-11-08
申请人： MITSUBISHI ELECTRIC CORP
发明人： GOSHIMA KENJI , MIKI JUNICHI , KONDO YASUO
IPC分类号： G03B31/00 , G03B31/04 , G11B27/02
摘要： PURPOSE:To perform edit without requiring the edit of sound by hand drilling by using a recording medium on which the sound is digital-recorded. CONSTITUTION:A time code 13 outputted from a film editing machine 1A is inputted to a time code signal input terminal 42, and a rotary pulse signal 12 to an external clock input terminal 40. An image can be monitored with a viewer 4 by setting a movie film 2A for edit in which the time code signal 13 is recorded at the rotary driving part of the film editing machine 1A. When the movie film 2A for edit is fed, an audio signal part on which the same time code signal is attached is reproduced corresponding to the cycle of the rotary pulse signal 12, and the time code of the audio signal and identification informa tion are displayed on the monitor 23 of a console, and it is recognized which part of what kind of sound is being reproduced at a glance. Thus, since the same address code corresponding to the film is attached on the audio signal, the deterioration of sound quality due to damage can be evaded.

69. 发明专利

JPH0154783B2 失效
公开(公告)号：JPH0154783B2
公开(公告)日：1989-11-21
申请号：JP11139183
申请日：1983-06-21
申请人： MITSUBISHI ELECTRIC CORP
发明人： GOSHIMA KENJI
IPC分类号： G02B7/28 , G11B7/09 , G11B7/095

70. 发明专利

JPH01162263A DEVICE FOR TRACKING ROTARY HEAD TYPE MAGNETIC RECORDING AND REPRODUCING DEVICE 失效
公开(公告)号：JPH01162263A
公开(公告)日：1989-06-26
申请号：JP32214387
申请日：1987-12-17
申请人： MITSUBISHI ELECTRIC CORP
发明人： GOSHIMA KENJI
IPC分类号： G11B15/467
摘要： PURPOSE:To shorten a pull-in time in a phase control system at the time of reproducing by fixing the level of the output signal of a tracking error signal generating circuit at the voltage of operating point of the circuit at the time of reproducing an unrecording section in which no reproducing signal exists. CONSTITUTION:In the reproduction, the presence/absence of the reproducing signal is detected, and at the time of reproducing the unrecording section where no reproducing signal can be obtained, the level of output signal of the tracking error signal generating circuit 25 is fixed at the voltage of its operating point, then, it is outputted. In other words, at the time of rushing to a recorded section again, the pull-in time of tracking can be shortened, and also, by detecting the presence/absence of the reproducing signal by observing the continuance of the reproducing signal, the useless switching operation is omitted.

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