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. 发明授权

US5251196A Optical pick-up selectively reading and writing an optical and magneto-optical recorded medium 失效
标题翻译：光学拾取器选择性地读写光学和磁光记录介质
公开(公告)号：US5251196A
公开(公告)日：1993-10-05
申请号：US826676
申请日：1992-01-27
申请人： Yasuaki Morimoto , Friedheim Zucker , Christian Buchler , Heinz-Jorg Schroder
发明人： Yasuaki Morimoto , Friedheim Zucker , Christian Buchler , Heinz-Jorg Schroder
IPC分类号： G11B11/105 , G11B13/04
CPC分类号： G11B11/10576 , G11B11/10515 , G11B11/10532 , G11B11/10595 , G11B11/10597 , G11B13/04
摘要： An optical pick-up for selectively reading and writing an optical and magneto-optical recorded medium, in which light projected on the recorded medium is reflected therefrom and directed onto one of two photodetectors, depending on the polarization of the light. The recorded medium has magnetic domains for storing data and a magneto-optical signal is generated from the difference between the two photo voltages from the two photodetectors. The magneto-optical signal represents the data stored in the magnetic domains. The recorded medium also stores data in pit forms, and an optical signal is generated from the sum of the photovoltages of the two photodetectors, to represent the data stored in the pit forms. The arrangement is suitable for reading out simultaneously the optical signal and the magneto-optical signal.
摘要翻译：用于选择性地读取和写入光学和磁光记录介质的光学拾取器，其中投射在记录介质上的光从其反射并定向到两个光电检测器之一，这取决于光的偏振。记录介质具有用于存储数据的磁畴，并且从两个光电检测器的两个光电压之间的差产生磁光信号。磁光信号表示存储在磁畴中的数据。记录介质还存储凹坑形式的数据，并且从两个光电检测器的光电压之和产生光信号，以表示以凹坑形式存储的数据。该装置适用于同时读出光信号和磁光信号。

2. 发明授权

US5014253A Optical pick-up for selective playback and recording on a magneto-optically recorded medium 失效
标题翻译：用于在磁光记录介质上进行选择性重放和记录的光学拾取器
公开(公告)号：US5014253A
公开(公告)日：1991-05-07
申请号：US250777
申请日：1988-09-28
申请人： Yasuaki Morimoto , Friedheim Zucker , Christian Buchler
发明人： Yasuaki Morimoto , Friedheim Zucker , Christian Buchler
IPC分类号： G11B7/1263 , G11B11/10 , G11B11/105 , G11B13/04
CPC分类号： G11B7/1263 , G11B11/10515 , G11B11/10532 , G11B11/10576 , G11B11/10595 , G11B11/10597 , G11B13/04
摘要： An optical pick-up for selective playback and recording on a magneto-optically recording medium, in which light is projected from a source onto the medium. The light is provided with a direction of a polarization, and is either reflected from the recording medium or is transmitted through the medium. The reflected or transmitted light becomes deflected onto a predetermined one of several photodetectors, depending on the direction of polarization of the light. The intensity of the reflected light or the transmitted light is held constant to minimize noise components that result from the optical properties of different recorded media as well as from the light. By holding the light intensity constant, moreover, precise readjustment to each of the different recording media that may be used, is not necessary.
摘要翻译：用于在磁光记录介质上进行选择性重放和记录的光学拾取器，其中光从源投影到介质上。光被提供有偏振方向，并且被从记录介质反射或通过介质传输。反射光或透射光根据光的偏振方向而偏转到几个光电检测器中的预定的一个上。反射光或透射光的强度保持恒定，以使由不同记录介质以及光的光学特性产生的噪声分量最小化。此外，通过保持光强度不变，对于可以使用的各种记录介质的精确重新调整是不必要的。

3. 发明授权

US06363044B1 Automatically adapting forward or reversed biased photodiode detection circuit 有权
标题翻译：自动适应正向或反向偏置的光电二极管检测电路
公开(公告)号：US06363044B1
公开(公告)日：2002-03-26
申请号：US09209716
申请日：1998-12-11
申请人： Steffen Lehr , Christian Buechler , Friedheim Zucker
发明人： Steffen Lehr , Christian Buechler , Friedheim Zucker
IPC分类号： G11B390
CPC分类号： G11B7/126 , G01R31/2635 , G11B7/13 , H01S5/042 , H01S5/06825 , H01S5/0683
摘要： A photodiode detection circuit is used to automatically identify a type of photodiode circuit connected to it. The photodiode circuit comprises at least a photodiode. Once the type of photodiode circuit has been identified by applying a current to it and evaluating a voltage occuring at an input of the detection circuit the photodetection circuit adapts itself to it, e.g. a reverse biasing voltage is/isn't applied to the photodiode of the photodiode circuit. The result is a photodiode detection circuit which uses a forward or a reversed biased photodiode. The photodiode detection circuit is now in a state to measure light falling on the photodiode. The detection circuit may be part of a light intensity monitoring and controlling circuit which allows to regulate the intensity of a laser beam in an optical disk reading/recording device.
摘要翻译：光电二极管检测电路用于自动识别与其连接的光电二极管电路的类型。光电二极管电路至少包括光电二极管。一旦通过向其施加电流并且评估在检测电路的输入处发生的电压来识别光电二极管电路的类型，则光电检测电路使其自身适应于其。反向偏置电压不会施加到光电二极管电路的光电二极管。结果是使用正向或反向偏置光电二极管的光电二极管检测电路。光电二极管检测电路现在处于测量落在光电二极管上的光的状态。检测电路可以是允许调节光盘读取/记录装置中的激光束的强度的光强度监视和控制电路的一部分。

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