DISK PLAYER

PURPOSE:To read an index on a disk recording medium which is revolving at a high speed with a stroboscopic effect, by illuminating intermittently the index on the revolving disk and then obtaining coincidence between the period of illumination and the number of revolutions of the disk. CONSTITUTION:...

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Bibliographic Details
Main Authors FUJIMOTO RIYOUHEI, FUJIMOTO EISUKE
Format Patent
LanguageEnglish
Published 31.01.1984
Subjects
INFORMATION STORAGE
INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER
PHYSICS
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Summary:PURPOSE:To read an index on a disk recording medium which is revolving at a high speed with a stroboscopic effect, by illuminating intermittently the index on the revolving disk and then obtaining coincidence between the period of illumination and the number of revolutions of the disk. CONSTITUTION:The 1st gear 9, timing belt 10 and the 2nd gear 11 are set so as to obtain synchronization between the period of intermittent illumination of a label 2 produced by the revolution of a shutter 12 and the number of revolutions of a disk 1. The label 2 is illuminated synchronously with the revolution of the disk 1, and an object revolving at a known fixed speed is illuminated intermittently. This illuminating period is set at the number of revolutions of said object to obtain a stroboscopic effect. With this effect, the object seems as if it stopped. As a result, it is possible to read easily the contents of information of the index on the disk 1 even with the information to be reproduced at a high speed.
Bibliography:Application Number: JP19820127402