发明名称 Apparatus and method for detecting an abnormality in a recorded signal
摘要 An apparatus for detecting an abnormality of a recorded signal of a recorder/player includes a plurality of recording/reproducing heads for recording/reproducing a signal onto/from a medium, and a determining portion for determining an abnormality of the recorded signal based on the signal reproduced by the recording/reproducing heads. While one recording/reproducing head records the signal of image and/or sound on the medium, the other recording/reproducing head reproduces the signal recorded by the recording/reproducing head. The determining portion determines the abnormality of the recorded signal by determining whether or not the signal reproduced from the medium is in a normal data format, or by determining whether or not an envelope of reproduced signals is greater than a predetermined level. Accordingly, when abnormality of recorded signal occurs due to a presence of foreign substances on the heads or from other problem sources, a user is immediately notified of such an abnormality.
申请公布号 US2004184179(A1) 申请公布日期 2004.09.23
申请号 US20040815665 申请日期 2004.04.02
申请人 LEE CHANG-HYEON 发明人 LEE CHANG-HYEON
分类号 G11B15/46;G11B5/008;G11B5/53;G11B15/04;G11B15/087;G11B15/12;G11B27/34;G11B27/36;(IPC1-7):G11B15/18 主分类号 G11B15/46
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