专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明专利

JP2009099257A Read and/or write device of optical recording medium, method of determining correct track error signal by phase detecting method 审中-公开
标题翻译：光学记录介质的读取和/或写入装置，通过相位检测方法确定正确的跟踪信号的方法
公开(公告)号：JP2009099257A
公开(公告)日：2009-05-07
申请号：JP2008327482
申请日：2008-12-24
申请人： Deutsche Thomson Brandt Gmbh , ドイツェトムソン−ブラントゲーエムベーハーDeutsche Thomson−Brandt Gmbh
发明人： BUECHLER CHRISTIAN , KABUTZ MARTEN
IPC分类号： G11B7/09 , G11B7/133
CPC分类号： G11B7/0906 , G11B7/0901 , G11B7/0941 , G11B7/0948
摘要： PROBLEM TO BE SOLVED: To provide a device to determine phase difference signals as correctly as possible and a method of determining correct tracking error signals by using a phase detecting mechanism.
SOLUTION: This device has an edge sequence detector 14 to detect the edge sequences of the output signals (A+C, B+D), and a signal blocking mechanism 15 to block the phase difference output signal (ϕ) from the phase detection mechanism 13, and prevents wrong phase detection signals from being outputted.
COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：提供一种尽可能正确地确定相位差信号的装置，以及通过使用相位检测机构来确定正确的跟踪误差信号的方法。解决方案：该装置具有边缘序列检测器14，用于检测输出信号（A + C，B + D）的边沿序列，以及信号阻断机构15，用于将相位差输出信号（φ）从相位检测机构13，并且防止输出错误的相位检测信号。版权所有（C）2009，JPO＆INPIT

2. 发明专利

JP2001056941A SCANNER FOR OPTICAL RECORDING MEDIUM 失效
公开(公告)号：JP2001056941A
公开(公告)日：2001-02-27
申请号：JP2000223771
申请日：2000-07-25
申请人： THOMSON BRANDT GMBH
发明人： BUECHLER CHRISTIAN , DIETRICH CHRISTOPH
IPC分类号： G11B7/00 , G11B7/007 , G11B7/085 , G11B7/09
摘要： PROBLEM TO BE SOLVED: To enable the discrimination of the direction at the time during a track is crossed by an intermediate track signal (MZC) by providing a device wherein this signal MZC is formed, in a read-out or write-in device with respect to data marks of an optical recording medium which are provided with the data mark arranged along the track and a header mark arranged while horizontally offsetting with respect to a center of the track. SOLUTION: This device is provided with a header sequence detector 9, a track cross detector 10 and an intermediate track detector 11. This intermediate track detector 11 is connected to outputs of a header discriminating device 8, track cross detector 10 and header sequence detector 9, to generate the intermediate track signal MZC.

3. 发明专利

JPH10289532A DEVICE FOR READING/WRITING DATA FROM/TO OPTICAL RECORDING MEDIUM 失效
公开(公告)号：JPH10289532A
公开(公告)日：1998-10-27
申请号：JP11442398
申请日：1998-04-10
申请人： THOMSON BRANDT GMBH
发明人： BUECHLER CHRISTIAN
IPC分类号： G11B7/00 , G11B7/004 , G11B7/005 , G11B20/10 , G11B20/14
摘要： PROBLEM TO BE SOLVED: To obtain a reliable digital output signal from an analog input signal regardless a maximum execution length by supplying a comparison signal to a data slicer and comparing a clock signal matching to a generated analog input signal and/or digital output signal with the digital output signal. SOLUTION: A data slicer 1 inputs a comparison signal V to be supplied by a comparison signal generating unit 2 to generate a digital signal A from an analog input signal E. A clock generator 5 generates a clock signal T matching to the analog input signal E and/or the digital output signal A. A pulse generating device 4 outputs a first or a second reference voltage 20, 21 by comparing the digital output signal A with the clock signal T by a controllable switch elements 18, 19 to transmit it to the comparison signal generating unit 2. Thus, the operation of the data slicer 1 is made to be a reliable operation even at any point of time.

4. 发明专利

JP2001209968A OPTICAL RECORDING MEDIUM READING/WRITING DEVICE 失效
公开(公告)号：JP2001209968A
公开(公告)日：2001-08-03
申请号：JP2000378734
申请日：2000-12-13
申请人： THOMSON BRANDT GMBH
发明人： BUECHLER CHRISTIAN , MORIMOTO YASUAKI , ZUCKER FRIEDHELM
IPC分类号： G02B5/08 , G02B5/18 , G11B7/135
摘要： PROBLEM TO BE SOLVED: To provide an optical recording medium reading/writing device 6 especially capable of preventing a translucent mirror 3 from being affected by an external part and reducing its manufacturing cost. SOLUTION: The optical recording medium reading/writing device 6 is provided with a light source 1 emitting a scanning light beam 2, an photodetector 7 for detecting the scanning light beam 2 reflected by a recording medium 6, and the translucent mirror 3 which projects the scanning light beam 2 on the recording medium 6 and is arranged within an optical path directing the scanning light beam 2 reflected to the photodetector 7. The translucent mirror 3 is composed of flat parallel plates having a layered structure in which a partial reflecting layer 10 is arranged between two small carrier plates 11, 12.

5. 发明专利

JP2000155964A APPARATUS FOR READ/WRITE WITH REFERENCE TO OPTICAL RECORDING MEDIUM 失效
公开(公告)号：JP2000155964A
公开(公告)日：2000-06-06
申请号：JP32099499
申请日：1999-11-11
申请人： THOMSON BRANDT GMBH
发明人： BUECHLER CHRISTIAN , LEHR STEFFEN
IPC分类号： G11B7/08 , G11B7/00 , G11B7/09
摘要： PROBLEM TO BE SOLVED: To provide an apparatus of a type which displays the best possible compensation of the error, of a track error signal (DPD-TE) and a tracking signal, which is caused by the movement of a lens. SOLUTION: Regarding this apparatus for a read operation and/or a write operation with reference to an optical recording medium, a tracking device 13, a four-quadrant detector 5, two sum points 15, 16, a phase comparison device 20 for a tracking operation according to a differential phase detection method and various delay elements 26 which can be set by a control device 24 are provided. Analog delay elements 26X, 26Y, 26A, 26B, 26C, 26D which are arranged on the upstream and digital delay elements 26S, 26T, 26U which are arranged on the downstream of the sum points 15, 16 are provided. The apparatus is suitable for a read operation and/or a write operation with reference to an optical recording medium such as CD, CDI, CD-ROM, DVD, CDR or the like.

6. 发明专利

JPH11288521A DEVICE FOR EXECUTING READ AND/OR WRITE FROM/TO OPTICAL RECORDING MEDIUM 失效
公开(公告)号：JPH11288521A
公开(公告)日：1999-10-19
申请号：JP4805199
申请日：1999-02-25
申请人： THOMSON BRANDT GMBH
发明人： BUECHLER CHRISTIAN , DANG LIEU-KIM , ZUCKER FRIEDHELM
IPC分类号： G11B7/00 , G11B7/005 , G11B7/09 , G11B7/095 , G11B7/12 , G11B7/13 , G11B7/20 , G11B19/12 , G11B7/125
摘要： PROBLEM TO BE SOLVED: To simplify the structure of a device executing read and/or write from/to an optical recording medium. SOLUTION: This device executing read and/or write from/to an optical recording medium is provided with a scanning unit 1 and an evaluating unit 2 provided with at least two detecting units 10 and 20 respectively provided with plural detecting parts 11 to 18 and 21 to 28, which are respectively connected to the unit 2 through wires 31 to 38. In the device, the detecting parts 11, 21; 21, 22;...; 18, 28 of the different detecting units 10 and 20 are connected with the unit 2 respectively through the wires 31 to 38. This device is capable of not only reading and/or writing from/to the optical recording medium corresponding to the CD standard but also reading and/or writing from/to the optical recording medium corresponding to the DVD standard.

7. 发明专利

JPH11273121A Photodiode detection circuit automatically adaptively biased forward or backward 有权
标题翻译：光电转换检测电路自动自动向前或向后偏移
公开(公告)号：JPH11273121A
公开(公告)日：1999-10-08
申请号：JP37016898
申请日：1998-12-25
申请人： Deutsche Thomson Brandt Gmbh , ドイツェトムソン−ブラントゲーエムベーハー
发明人： LEHR STEFFEN , BUECHLER CHRISTIAN , ZUCKER FRIEDHELM
IPC分类号： G01J1/44 , G01R31/26 , G11B7/125 , G11B7/13 , H01S5/042 , H01S5/068 , H01S5/0683
CPC分类号： G11B7/126 , G01R31/2635 , G11B7/13 , H01S5/042 , H01S5/06825 , H01S5/0683
摘要： PROBLEM TO BE SOLVED: To provide a detection method or circuit without an external inclusion of a detection circuit, for adapting the detection circuit connected to either one side photodiode circuit of a forward bias or a backward bias no photodiode type. SOLUTION: The method for automatically discriminating the photodiode circuit 11 of a first type or a second type respectively having a first and a second output contains a stage 12 connecting the first output to ground, the stage 13 connecting a current source of a prescribed current value to the second output, the stage 14 comparing the voltage 12 of the second output with a prescribed reference voltage(VT) and the stage outputting a signal (TPC) showing the result of the comparison stage discriminating either one side photodiode circuit of the first or the second type.
摘要翻译：要解决的问题：提供一种检测方法或电路，而不需要外部检测电路，以适应连接到正向偏置或反向偏置无光电二极管类型的单侧光电二极管电路的检测电路。解决方案：用于自动识别具有第一和第二输出的第一类型或第二类型的光电二极管电路11的方法包括将第一输出连接到地的级12，级13将具有规定电流值的电流源到第二输出，级14将第二输出的电压12与规定的参考电压（VT）进行比较，并且级输出表示比较级的结果的信号（TPC），该信号表示第一或第二输出的单侧光电二极管电路第二种类型。

8. 发明专利

JPH06504869A 失效
公开(公告)号：JPH06504869A
公开(公告)日：1994-06-02
申请号：JP50325892
申请日：1992-02-04
申请人： THOMSON BRANDT GMBH
发明人： WEISSMANN GERHARD , BUECHLER CHRISTIAN
IPC分类号： G11B7/095 , G11B7/09

9. 发明专利

JP2000353327A DEVICE FOR WRITING OR READING ON/FROM OPTICAL RECORDING MEDIUM 失效
公开(公告)号：JP2000353327A
公开(公告)日：2000-12-19
申请号：JP2000162209
申请日：2000-05-31
申请人： THOMSON BRANDT GMBH
发明人： BUECHLER CHRISTIAN , KABUTZ MARTEN
IPC分类号： G11B7/09 , G11B7/133
摘要： PROBLEM TO BE SOLVED: To make it possible to generate an accurate phase angle signal by detecting phase difference signals among output signals from a photo-detecting mechanism comprising plural photo-detecting elements, further, detecting edge sequence of the output signals, and blocking the output signals from phase generating mechanisms. SOLUTION: An optical scanning beam 2 converged on an information track is reflected by an optical recording medium 7, passes through a convergent lens 5, reflected by a translucent reflecting mirror 4, and made incident on a four-split photo-detecting element 10. The output signals A and C from the photo-detecting elements 10A, 10C diagonally opposite each other are made incident on a diagonal addition signal generating mechanism 11, and output a 1st addition signal A+C. Similarly, the output signals from the photo-detecting elements 10B and 10D generate a 2nd addition signal B+D. These signals are also inputted to an edge sequence detecting mechanism 14 to check edge sequence and other signal characteristics. A mis-operation display mechanism 25 displays a state of an edge sequence accumulation.

10. 发明专利

JPH11232666A APPARATUS FOR READING FROM OPTICAL RECORD MEDIUM OR WRITING TO THE MEDIUM 失效
公开(公告)号：JPH11232666A
公开(公告)日：1999-08-27
申请号：JP32584398
申请日：1998-11-02
申请人： THOMSON BRANDT GMBH
发明人： BUECHLER CHRISTIAN
IPC分类号： G11B7/007 , G11B7/09
摘要： PROBLEM TO BE SOLVED: To provide an apparatus for reading from an optical record medium and/or writing to the medium which can obtain a correct correction signal to a track error signal at low cost without a corresponding method for generating the correction signal and has a data track including a first area and at least one another area. SOLUTION: This apparatus has a detection means, a track error detector 7, a signal-shaping means 8 and a correction signal generation means 15, in which a first area forms a marking arranged at the center to the center of a data track and another area forms a marking offset in a lateral direction to the center of the data track. The signal-shaping means 8 includes an averaging unit 13. An output of the averaging unit 3 is connected to an input of the correction signal generation means 15.

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式