| 摘要 |
The invention provides a disk reproducing device capable of automatically detecting dirt on a lens without using any additional members. A pickup unit 5 reads a video signal of a storage medium 2, comparison/judgment means 9 a compares an attenuation ratio of an RF signal B amplified by an RF amplifier section 8 to a standard RF signal A stored in a storage section 12 with a threshold P likewise stored in the storage section 12 and judges that there is dirt on a pickup lens 51 when the comparison value falls below the threshold P, and a display section 11 displays alarm message data 122 stored in the storage section 12 superimposed on images being reproduced, and it is possible to thereby automatically detect dirt on the pickup lens 51 and report it to the user.
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