Sub-que code data read circuit for compact disc reproduction app

Details Sub-que code data read circuit for compact disc reproduction app Sub-que code data read circuit for compact disc reproduction app

1995-09-15

1997-07-15

Epps, Georgia Y.

Dynamic information storage or retrieval

Specific detail of information handling portion of system

Radiation beam modification of or by storage medium

369 47, 369 59, 369 32, G11B 700, G11B 2010

Patent

active

056489536

ABSTRACT:
A sub-que code (Q subcode) data read circuit for a compact disc reproduction apparatus is capable of converting sub-que code data of serial bits output from the compact disc-digital signal processor of a CD-ROM drive into parallel bytes and adjusting positions of bits in the parallel bytes, thereby enabling a microcomputer to read the sub-que code data through the sub-que code data read circuit without directly reading the data. Accordingly, the load of the microcomputer can be reduced, thereby enabling data processing at a high speed. In particular, the program used in the microcomputer can be simplified so that the CD-ROM drive can reproduce data at a high speed.

REFERENCES:
patent: 5177720 (1993-01-01), Kondo
patent: 5200943 (1993-04-01), Sano et al.
patent: 5274779 (1993-12-01), Stewart et al.
patent: 5343456 (1994-08-01), Maeda
patent: 5359582 (1994-10-01), Kim
patent: 5414686 (1995-05-01), Iitsuka

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