Optical information recording device and method for detecting and
verifying recorded information
    41.
    发明授权
    Optical information recording device and method for detecting and verifying recorded information 失效
    用于检测和验证记录信息的光信息记录装置和方法

    公开(公告)号:US5909418A

    公开(公告)日:1999-06-01

    申请号:US514590

    申请日:1995-08-15

    摘要: A laser light beam generated from a light source is divided by a diffraction grating into a plurality of light beams, i.e., a single main beam to be used for recording information and plural auxiliary beams distributed on two imaginary straight lines crossing each other. One of the straight lines extends parallel to tracks of a recording medium. The resultant divided beams are converged to be irradiated onto a recording medium, and reflected components, from the recording medium, of the beams are received by corresponding light receiving elements. Thus, the main and auxiliary beams distributed on one of the two imaginary straight lines are used to perform focusing and tracking. Further, one of the two auxiliary beams distributed on the other straight line are used to determine whether a track where information is to be recorded is a blank area or not, and the other of the auxiliary beams is used to verify whether the information has been recorded correctly.

    摘要翻译: 从光源产生的激光束被衍射光栅分割为多个光束,即用于记录信息的单个主光束和分布在彼此交叉的两个假想直线上的多个辅助光束。 一条直线平行于记录介质的轨道延伸。 所得到的分束被会聚以照射到记录介质上,并且来自记录介质的光束的反射分量被相应的光接收元件接收。 因此,分布在两条假想直线之一上的主光束和辅助光束用于进行聚焦和跟踪。 此外,分配在另一直线上的两个辅助光束中的一个用于确定要记录信息的轨道是否为空白区域,另一个辅助光束用于验证信息是否已经被 记录正确

    Method of and apparatus for recording and reproducing optical information
    42.
    发明授权
    Method of and apparatus for recording and reproducing optical information 失效
    用于记录和再现光学信息的方法和装置

    公开(公告)号:US5696368A

    公开(公告)日:1997-12-09

    申请号:US572084

    申请日:1995-12-14

    摘要: In an optical information recording and reproducing apparatus, information is recorded or reproduced by moving a recording medium relative to an optical head. In order to execute information recording onto the medium in the course of the relative movement involving acceleration and deceleration, the generation timing and intensity of a light beam to be generated in correspondence with the information to be recorded are controlled in response to a varying speed of the relative movement so that data pits to be formed in the recording medium can be standardized in pitch and size irrespective of the relative movement speed. Also, in order to permit information reproduction from the medium in the course of the relative movement involving acceleration and deceleration, reproduction timing of data read by the optical head is set in synchronism with variation in the relative movement speed so that the data can be reproduced at proper timing irrespective of the relative movement speed. With such arrangements, there can be achieved a highly increased information recording/reproduction speed, extended information recording area, reduced size and cost of the apparatus, and reduced power consumption in the apparatus.

    摘要翻译: 在光学信息记录和再现装置中,通过相对于光学头移动记录介质来记录或再现信息。 为了在涉及加速和减速的相对运动的过程中执行在介质上的信息记录,将根据要记录的信息产生的光束的产生定时和强度被响应于 相对运动,使得可以在记录介质中形成的数据凹坑能够以相对移动速度的间距和大小被标准化。 此外,为了允许在涉及加速和减速的相对运动的过程中从介质进行信息再现,由光头读取的数据的再现定时与相对移动速度的变化同步地设置,使得可以再现数据 在适当的时间,无论相对移动速度如何。 通过这样的布置,可以实现高度增加的信息记录/再现速度,扩展信息记录区域,减小设备的尺寸和成本,以及降低设备中的功耗。

    Track seek method and device for use with an optical information
recording and reproducing apparatus
    43.
    发明授权
    Track seek method and device for use with an optical information recording and reproducing apparatus 失效
    用于光信息记录和再现装置的追踪方法和装置

    公开(公告)号:US5515349A

    公开(公告)日:1996-05-07

    申请号:US346403

    申请日:1994-11-29

    IPC分类号: G11B21/08 G11B7/085 G11B7/00

    CPC分类号: G11B7/08541 G11B7/08588

    摘要: A position detector detects a relative position of an optical head to a recording medium, and on the basis of the thus-detected relative position, a position detection signal is generated in response to movement of a light beam over a predetermined distance. Then, in response to the position detection signal, a comparison is made between the number of track crossing counted for the predetermined movement distance on the basis of reception of reflection of the light beam, and a predetermined reference value for the predetermined movement distance. Then, track crossing count compensation data is generated which corresponds to a difference between the counted number of track crossing and the reference value, and the counted number of track crossing is corrected by use of such compensation data.

    摘要翻译: 位置检测器检测光学头与记录介质的相对位置,并且基于这样检测的相对位置,响应于光束在预定距离上的移动而产生位置检测信号。 然后,响应于位置检测信号,基于接收到光束的反射而计算的针对预定移动距离的轨道交叉次数与预定移动距离的预定参考值进行比较。 然后,产生轨道交叉计数补偿数据,其对应于计数的轨道交叉数与参考值之间的差异,并且通过使用这种补偿数据来校正轨道交叉的计数。

    Optical head with improved tracking and focusing error capabilities
    45.
    发明授权
    Optical head with improved tracking and focusing error capabilities 失效
    光学头与改进的跟踪和聚焦错误能力

    公开(公告)号:US5185729A

    公开(公告)日:1993-02-09

    申请号:US678478

    申请日:1991-04-01

    IPC分类号: G11B7/09 G11B7/135

    摘要: An optical head for reading and/or writing information from and in an optical recording medium having an improved sensor structure for focusing and tracking error detections. A light beam is separated into a 0th-order diffraction light beam and .+-.1st-order diffraction light beams, and these light beams are impinged upon a recording track of the optical recording medium. The light beams reflected from the optical recording medium is separated into two different directions, and the tracking and focusing error detections are carried out with multi-segment optical sensors which are connected in a complementary manner. As a result, the influence of the tracking error on the focusing error detection is eliminated, and the linearity of the focusing error detection is improved.

    Optical head for recording and playing back optical information
    46.
    发明授权
    Optical head for recording and playing back optical information 失效
    用于记录和播放光学信息的光头

    公开(公告)号:US5084851A

    公开(公告)日:1992-01-28

    申请号:US602726

    申请日:1990-10-24

    IPC分类号: G11B7/09 G11B7/13 G11B7/135

    摘要: The present invention relates to an optical head for recording and playing back optical information, the optical head comprising an illumination system which shines three beams of light comprising 0-dimensional diffraction light, +1-dimensional diffraction light, and -1-dimensional diffraction light onto an optical information recording medium, and a photoreceiver system which receives three beams of reflected light from the recording medium; the photoreceiver system being provided with an edge mirror whereby, of the three beams of reflected light from the recording medium, approximately one half of the 0-dimensional diffraction light and all of the +1-dimensional diffraction light is received by a first photoreceiver diode, without being affected by the edge mirror, and the remaining approximately one half of the 0-dimensional diffraction light and all of the -1-dimensional diffraction light is reflected by the edge mirror and is received by a second photoreceiver diode; wherein a focusing control signal, a tracking control signal, and an information signal are obtained from an output from the first photoreceiver diode or the second photoreceiver diode, or from combined outputs from the first photoreceiver diode and the second photoreceiver diode.

    Arrangement for detecting a signal for effecting a focus control of an
optical head
    47.
    发明授权
    Arrangement for detecting a signal for effecting a focus control of an optical head 失效
    用于检测用于实现光学头的聚焦控制的信号的装置

    公开(公告)号:US5023439A

    公开(公告)日:1991-06-11

    申请号:US456947

    申请日:1989-12-26

    IPC分类号: G02B7/28 G06K7/015 G11B7/09

    摘要: This device is an arrangement for detecting a signal for effecting a focus control of an optical head with respect to an optical information recording medium by making use of a reflected light beam from the optical information recording medium. On an optical path for a reflected light beam reflected from the recording surface of the optical recording medium, a photodetector is provided. This photodetector is composed of a plurality of elements arranged symmetrically in the transverse cross section of the light beam. Thus, an output of the outside element and an output of the inside element of the plural elements arranged in the transverse cross section of the light beam are used to detect a focus error, thus to utilize the signal detected for the focus control.

    摘要翻译: 该装置是用于通过利用来自光学信息记录介质的反射光束来检测用于实现相对于光学信息记录介质的光学头的聚焦控制的信号的装置。 在从光记录介质的记录表面反射的反射光束的光路上,提供光电检测器。 该光电检测器由在光束的横截面中对称布置的多个元件组成。 因此,使用布置在光束的横截面中的多个元件的外部元件的输出和内部元件的输出来检测聚焦误差,从而利用为聚焦控制检测到的信号。

    Drying and fixing device
    49.
    发明授权
    Drying and fixing device 失效
    干燥和固定装置

    公开(公告)号:US4172975A

    公开(公告)日:1979-10-30

    申请号:US905442

    申请日:1978-05-12

    申请人: Kazuo Noda

    发明人: Kazuo Noda

    CPC分类号: G03G15/2014 G03G15/11

    摘要: A drying and fixing device for a recording paper comprises a heat drum and a feeding means cooperated thereto in order to dry and fix the recording paper having developed toner image by contacting the paper to the heat drum. The feeding means comprises feed rollers arranged at the forward direction, viewed in the direction of progress of the recording papers, in conact with the heat drum and feed rollers arranged to the heat drum with a certain distance at the backward direction, viewed in the direction of progress of the recording paper.

    摘要翻译: 用于记录纸的干燥和定影装置包括加热鼓和与其配合的进料装置,以便通过使纸接触热鼓来干燥并固定具有显影的调色剂图像的记录纸。 进给装置包括沿着记录纸的进给方向从正面方向布置的进给辊,与沿着向后方向一定距离布置在热滚筒上的热滚筒和进给辊相反,方向 记录纸的进度。