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61. 发明专利

JP2005285324A Focus pull-in method and optical disk device 审中-公开
标题翻译：聚焦拉拔方法和光盘设备
公开(公告)号：JP2005285324A
公开(公告)日：2005-10-13
申请号：JP2005181883
申请日：2005-06-22
申请人： Mitsubishi Electric Corp , 三菱電機株式会社
发明人： RYU TOMOAKI
IPC分类号： G11B7/085
摘要： PROBLEM TO BE SOLVED: To realize exact focus pull-in in focus control of an optical disk with a high reproduction speed and a large wobbly surface.
SOLUTION: The focus pull-in method for pulling in a light spot onto a recording layer of an optical disk comprises a process for outputting a search voltage in the direction in which an objective lens approaches to the focal surface of the optical disk to a focus actuator, a process for detecting that a focus error signal based on the light reflected from the optical disk reaches a predetermined signal level, a process for outputting a brake signal to a focus actuator when the focus error signal reaches the predetermined signal level, and a process for detecting a relative speed between the objective lens and the optical disk, and every time the brake signal is outputted, the relative speed between the objective lens and the optical disk is detected, and an output period of the brake signal and/or an output level is controlled according to the detected relative speed.
COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：实现具有高再现速度和大摇摆表面的光盘的聚焦控制中的精确对焦引入。解决方案：用于将光点拉入光盘的记录层的聚焦拉入方法包括：在物镜接近光盘焦点的方向上输出搜索电压的处理对焦点致动器，用于检测基于从光盘反射的光的聚焦误差信号达到预定信号电平的处理，当聚焦误差信号达到预定信号电平时将制动信号输出到聚焦致动器的处理以及用于检测物镜和光盘之间的相对速度的处理，并且每当输出制动信号时，检测物镜和光盘之间的相对速度，并且制动信号和 /或根据检测到的相对速度来控制输出电平。版权所有（C）2006，JPO＆NCIPI

62. 发明专利

JP2005218045A Recording medium reproducing apparatus and transportable recording medium 有权
标题翻译：记录介质再生装置和运输记录介质
公开(公告)号：JP2005218045A
公开(公告)日：2005-08-11
申请号：JP2004025742
申请日：2004-02-02
申请人： Mitsubishi Electric Corp , 三菱電機株式会社
发明人： SHIMADA MASAAKI , RYU TOMOAKI , NAKANE KAZUHIKO
IPC分类号： H04N5/85 , G11B20/10 , G11B20/12 , G11B27/00 , G11B27/34 , H04N5/93
摘要： PROBLEM TO BE SOLVED: To provide a transportable recording medium and a recording medium reproducing apparatus to download a user's favorite icon by freely selecting it, which are attractive to the user since a content provider displays icons according to contents. SOLUTION: The recording medium reproducing apparatus reproduces the transportable recording medium to store a video content and an icon information, including an icon image, which is related to the video content and expresses the operating mode with respect to the user's operation to the recording medium reproducing apparatus. There are provided an image plane for displaying image data information of the video content, a storage means for storing the icon information, an information displaying plane for displaying the icon image from the icon information stored in the storage means, and a means of displaying and output the image data information of the image plane and the icon image of the information displaying plane by lapping them. COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：提供一种可移动记录介质和记录介质再现装置，以通过自由选择来下载用户喜爱的图标，由于内容提供商根据内容显示图标，这对于用户是有吸引力的。解决方案：记录介质再现装置再现可传送记录介质，以存储与视频内容相关的视频内容和包括图标图像的图标信息，并且将关于用户操作的操作模式表示为记录介质再现装置。提供了一种用于显示视频内容的图像数据信息的图像平面，用于存储图标信息的存储装置，用于从存储在存储装置中的图标信息显示图标图像的信息显示平面，以及显示和通过研究它们来输出图像平面的图像数据信息和信息显示平面的图标图像。版权所有（C）2005，JPO＆NCIPI

63. 发明专利

JP2005168048A Digital information encoding/decoding apparatus 审中-公开
标题翻译：数字信息编码/解码设备
公开(公告)号：JP2005168048A
公开(公告)日：2005-06-23
申请号：JP2005011693
申请日：2005-01-19
申请人： Mitsubishi Electric Corp , 三菱電機株式会社
发明人： TODA SHUJI , UEDA NOBUO , WATANABE OSAMU , KISHIDA NORITAKA , KODAMA AKIFUMI , RYU TOMOAKI , YAMAMOTO SEIKI
IPC分类号： H04N19/423 , H03M7/30 , H04N7/24 , H04N19/00 , H04N19/70
摘要： PROBLEM TO BE SOLVED: To provide a digital information encoding/decoding apparatus capable of obtaining a decoded signal synchronizing video and audio by a simple configuration.
SOLUTION: The digital information encoding/decoding apparatus comprises: a multiplexer 11 for demultiplexing an audio encoded data stream at the same time as a demultiplexed portion of a video encoded data stream or earlier than the demultiplexed portion of the video encoded data stream just for a time difference from which the out-of-synchronism of video and audio cannot be detected for human beings, arraying the audio encoded data stream prior to the video encoded data stream at the same time, and inserting a start code to a head of the demultiplexed video encoded data stream; a video decoder 22 for starting decoding by receiving the start code in the video encoded data stream; and an audio decoder 18 for starting decoding simultaneously with the start of decoding in the video decoder 22.
COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：解决的问题：提供能够通过简单的配置获得同步视频和音频的解码信号的数字信息编码/解码装置。解决方案：数字信息编码/解码装置包括：多路复用器11，用于在与视频编码数据流的解复用部分同时或在视频编码数据流的解复用部分之前解复用音频编码数据流只是为了不能为人类检测不到视频和音频的不同步的时间差异，在视频编码数据流之前同时排列音频编码数据流，并将起始码插入到头部的解复用的视频编码数据流; 用于通过接收视频编码数据流中的起始码开始解码的视频解码器22; 以及音频解码器18，用于与视频解码器22中的解码开始同时开始解码。版权所有（C）2005，JPO＆NCIPI

64. 发明专利

JP2004072439A Digital television broadcast recording and reproducing device 有权
公开(公告)号：JP2004072439A
公开(公告)日：2004-03-04
申请号：JP2002229430
申请日：2002-08-07
申请人： Mitsubishi Electric Corp , 三菱電機株式会社
发明人： RYU TOMOAKI
IPC分类号： H04H20/00 , H04H20/28 , H04H40/18 , H04N5/445 , H04N5/76 , H04N5/91 , H04N7/025 , H04N7/03 , H04N7/035 , H04H1/00
摘要： PROBLEM TO BE SOLVED: To provide a digital television broadcast recording and reproducing device by which superimposed character information can be viewed in real time when the broadcast of the superimposed character information is received in the course of time-free reproduction.
SOLUTION: The digital television broadcast recording and reproducing device 101 is provided with a demodulation section 1 and a recording and reproducing section 12; and in addition, a superimposed character detection section 31 detecting the superimposed character information from the data stream signal of a program; a character decoding section 32 transforming the superimposed character information output from the superimposed character detection section 31 into a video signal; and a character superimposition section 33 superimposing the video signal output from the character decoding section 32 on the video signal output from a video/audio decoding section 4. A control section 71 outputs in real time the superimposed character information when the broadcast of the superimposed character information is received in the course of the time-free reproduction.
COPYRIGHT: (C)2004,JPO

65. 发明专利

JP2003006892A Tracking control signal generator 审中-公开
标题翻译：跟踪控制信号发生器
公开(公告)号：JP2003006892A
公开(公告)日：2003-01-10
申请号：JP2001189408
申请日：2001-06-22
申请人： Mitsubishi Electric Corp , 三菱電機株式会社
发明人： RYU TOMOAKI
IPC分类号： G11B7/085 , G11B7/09
摘要： PROBLEM TO BE SOLVED: To provide a tracking signal generator that is adaptable to various specifications of optical discs with small software development load reducing the manufacturing cost.
SOLUTION: This tracking signal generator has a pretreatment circuit 2 for error signals B to generates signals D, a phase compensating filter 3 for signals D to generate signals F, an operation means 6 for phase compensation operation of signals D to generate signals J, a switch 8 to choose either signal F or signals J, and a post processing circuit 4 for the signals selected by the switch 8 to output as the tracking control signals. And it is featured in that the above-mentioned pretreatment circuit 2, the phase compensating filter 3, and the post processing circuit 4 are constituted in hardware, and the above- mentioned operation means 6 is constituted in software to perform predetermined programs.
COPYRIGHT: (C)2003,JPO
摘要翻译：要解决的问题：提供一种适应各种规格的光盘的跟踪信号发生器，具有小的软件开发负载，降低制造成本。解决方案：该跟踪信号发生器具有用于产生信号D的误差信号B的预处理电路2，用于产生信号F的信号D的相位补偿滤波器3，用于产生信号J的信号D的相位补偿操作的操作装置6 开关8选择信号F或信号J，以及用于由开关8选择的信号作为跟踪控制信号输出的后处理电路4。其特征在于，上述预处理电路2，相位补偿滤波器3和后处理电路4由硬件构成，上述操作装置6由软件构成以执行预定的程序。

66. 发明专利

JP2003248938A SEEK CONTROL DEVICE AND SEEK CONTROL METHOD 审中-公开
公开(公告)号：JP2003248938A
公开(公告)日：2003-09-05
申请号：JP2002043346
申请日：2002-02-20
申请人： MITSUBISHI ELECTRIC CORP
发明人： MATSUI SHIGERU , RYU TOMOAKI
IPC分类号： G11B21/08 , G11B7/085
摘要： PROBLEM TO BE SOLVED: To provide a seek control device which can perform a track jump at a high speed and with correctness in an optical disc device. SOLUTION: The seek control device controls to rotate so that linear velocity of an optical pickup to read information on a disc medium to scan tracks on the above disc medium is made constant, measures one round time of disc rotation on an inner track of the above disc medium and one round time of the disc rotation on the track separated with designated number of the tracks from the track of the above disc medium, calculates sector length and track pitch of the above disc medium based on each of the measured one round time of the disc rotation, calculates the number of seek tracks to a target sector based on the above calculated sector length and the above track pitch, and corrects the above calculated number of seek tracks based on the above calculated number of seek tracks and the actual number of the tracks to the above target sector. COPYRIGHT: (C)2003,JPO

67. 发明专利

JP2002217684A DIGITAL FILTER 失效
公开(公告)号：JP2002217684A
公开(公告)日：2002-08-02
申请号：JP2001009857
申请日：2001-01-18
申请人： MITSUBISHI ELECTRIC CORP
发明人： RYU TOMOAKI
IPC分类号： H03H17/04
摘要： PROBLEM TO BE SOLVED: To reduce a circuit scale of a digital filter. SOLUTION: This digital filter holds a plurality of different filter coefficients by which filter characteristics are determined and practices an operation including a plurality of multiplications using the plurality of the different coefficients as multipliers. The digital filter has a coefficient memory means (7) in which the plurality of the different coefficients are stored, a coefficient selection means (8) which reads one filter coefficient selectively out of the memory means according to a prescribed sequence, and a multiplication means (5) which practices the multiplication by using the selectively read-out filter coefficient as a multiplier.

68. 发明专利

JP2001243641A OPTICAL DISK DRIVE 失效
公开(公告)号：JP2001243641A
公开(公告)日：2001-09-07
申请号：JP2000055447
申请日：2000-03-01
申请人： MITSUBISHI ELECTRIC CORP
发明人： YOKOYAMA EIJI , RYU TOMOAKI
IPC分类号： G11B19/02 , G11B7/09 , G11B7/095 , G11B20/18
摘要： PROBLEM TO BE SOLVED: To obtain an optical disk drive capable of performing stable drive control of an operation such as reproduction without losing control continuity before and after the defect detection even when the defect detection period is long. SOLUTION: A disk physical distortion correction signal generating means 11 outputs a signal by which a phase compensation signal S8 is obtained through an LPF in a normal period as a disk physical distortion correction signal S11 and outputs an output signal of the LPF, sampled at a defect detection start as the signal S11 during the defect detection period. A disturbance pulse detecting means 13a outputs a disturbance pulse correction signal S13 on the basis of a disturbance pulse S13a obtained by subtracting the signal S11 from the signal S8. An adding means 12 adds the signal S11 to the signal S13 and outputs a defect compensation signal S12. The signal S12 is given as an actuator control signal S20 during the defect detection period.

69. 发明专利

JP2001243637A FOCUS PULLING METHOD AND OPTICAL DISK DRIVE 失效
公开(公告)号：JP2001243637A
公开(公告)日：2001-09-07
申请号：JP2000049392
申请日：2000-02-25
申请人： MITSUBISHI ELECTRIC CORP
发明人： RYU TOMOAKI
IPC分类号： G11B7/085 , G11B7/09
摘要： PROBLEM TO BE SOLVED: To perform reliable focus pulling free from failure for the focus control of an optical disk where a reproduction speed is fast and surface wavering is large. SOLUTION: This drive consists of a means for applying a brake signal to a focus actuator before closing a focus control loop, a means for detecting the inversion of a relative speed between an object lens performing a focus search operation and the optical disk going up and down due to surface wavering, and a means for detecting the relative speed between the object lens and the optical disk from a focus error signal detected on each layer in a multilayer disk.

70. 发明专利

JPH0863885A COMPRESSED DIGITAL SIGNAL EXPANSION APPARATUS 失效
公开(公告)号：JPH0863885A
公开(公告)日：1996-03-08
申请号：JP19845994
申请日：1994-08-23
申请人： MITSUBISHI ELECTRIC CORP
发明人： RYU TOMOAKI , KODAMA AKIFUMI , YAMAMOTO SEIKI , WATANABE OSAMU , KISHIDA NORITAKA , UEDA NOBUO , SOTODA SHIYUUJI
IPC分类号： H04N5/92 , G11B20/10 , H04N7/24 , H04N19/00
摘要： PURPOSE: To obtain an apparatus which can be operated by a clock synchronized with every circuit, whose circuit constitution is simple and whose accuracy is high by a method wherein a signal which has divided a system clock for a video decoder into (n) frequencies is utilized as a clock. CONSTITUTION: In a clock control circuit 9, a clock (e) which is output from an oscillator 10 is input to a video decoder 4 and a frequency divider 13. In the frequency divider 13, the clock (e) is changed into a clock (g). A coded data multiple train signal which is output from a magnetooptical disk reproducing apparatus 1 is frequency-divided in a pit width so as to obtain a clock (f). The clock (g) is input as a decoder clock for the decoder 4 and an audio decoder 7. Then, a clock (a) which is output to the apparatus 1 by the control circuit 9 is used as a signal which is composed of the logical sum of a data request signal and the clock signal (f). At this time, a coded data multiple train signal which is output from the apparatus 1 changes its value at the rise edge of the clock (a), it holds the value until a next rise edge, and it changes the value into next data at the next rise.

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