| 摘要 |
PROBLEM TO BE SOLVED: To detect the abnormality of a recording signal during real-time recording in a recording/reproducing device having only one signal processing system. SOLUTION: This device is provided with a signal inserting part 104 for inserting a predetermined fixed pattern signal into the head of a digital digital input starting recording, a signal processing part 102 for compressing the digital signal to be a digital compression signal, a signal extraction part 105 for extracting the digital compression signal immediately before recording in a recording medium 103, a signal storage part 106 for recording the signal extracted by the signal extraction part 105, a reference signal storage part 107 for recording a pattern signal equal to the compressed digital signal obtained by compressing the fixed pattern signal as a reference signal without fail, and a signal comparison part 108 for reading and comparing the reference signal and a signal stored in the signal storage with each other. COPYRIGHT: (C)2008,JPO&INPIT
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