Dynamic information storage or retrieval – Condition indicating – monitoring – or testing – Including radiation storage or retrieval
Patent
1995-06-21
1997-12-30
Young, W. R.
Dynamic information storage or retrieval
Condition indicating, monitoring, or testing
Including radiation storage or retrieval
369 54, G11B 700
Patent
active
057038546
ABSTRACT:
A spindle servo circuit controls the rotation of a disc-driving spindle motor based on absolute address information taken from a disc. Reproduction digital data is written to and read from a RAM. An address control circuit generates a write address of the RAM by counting clocks synchronized with the reproduction digital data by a first counter, and generates a read address of the RAM by counting reference clocks by a second counter. A jitter correction circuit produces jitter-removed reproduction digital data from the RAM. The address control circuit is reset so that the address margin of the RAM is maximized when the spindle servo circuit is locked.
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Patent Abstracts of Japan, vol. 13, No. 144, E740, & JP 63-306,788, Apr. 10, 1989.
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Ando Ryo
Kuroda Hirokazu
Sony Corporation
Young W. R.
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