Media type detection using a lock indicator
    1.
    发明申请
    Media type detection using a lock indicator 有权
    使用锁定指示器进行介质类型检测

    公开(公告)号:US20070140074A1

    公开(公告)日:2007-06-21

    申请号:US11314883

    申请日:2005-12-21

    IPC分类号: G11B7/00

    摘要: A method for detecting a media type of an optical disc system comprising the steps of (A) checking for a first wobble signal associated with a first media type, (B) if step (A) detects the first wobble signal, operating the optical disc system as the first media type, (C) checking for a second wobble signal associated with a second media type, and (D) if step (C) detects the second wobble signal, operating the optical disc system as the second media type.

    摘要翻译: 一种用于检测光盘系统的媒体类型的方法,包括以下步骤:(A)检查与第一媒体类型相关联的第一摆动信号,(B)如果步骤(A)检测到第一摆动信号,则操作光盘 系统作为第一媒体类型,(C)检查与第二媒体类型相关联的第二摆动信号,以及(D)如果步骤(C)检测到第二摆动信号,则操作光盘系统作为第二媒体类型。

    Using PRML read channel ADC for blank/defect and ripple detection
    2.
    发明申请
    Using PRML read channel ADC for blank/defect and ripple detection 失效
    使用PRML读通道ADC进行空白/缺陷和纹波检测

    公开(公告)号:US20070143771A1

    公开(公告)日:2007-06-21

    申请号:US11305764

    申请日:2005-12-16

    IPC分类号: G11B7/00

    摘要: An apparatus including a photo detector circuit, a first circuit, a second circuit and a third circuit. The photo detector circuit may be configured to generate an RF signal in response to a laser spot on a surface of an optical disc. The first circuit may be configured to generate a first digital signal in response to an AC-coupled version of the RF signal. The second circuit may be configured to generate a second digital signal in response to a DC-coupled version of the RF signal. The third circuit may be configured to generate one or more detect signals in response to the first digital signal and the second digital signal. Each of the one or more detect signals may indicate a respective condition of the surface of the optical disc.

    摘要翻译: 一种包括光电检测器电路,第一电路,第二电路和第三电路的装置。 光检测器电路可以被配置为响应于光盘表面上的激光点产生RF信号。 第一电路可以被配置为响应于RF信号的AC耦合版本而产生第一数字信号。 第二电路可以被配置为响应于RF信号的DC耦合版本而产生第二数字信号。 第三电路可以被配置为响应于第一数字信号和第二数字信号而产生一个或多个检测信号。 一个或多个检测信号中的每一个可以指示光盘的表面的相应条件。