optical disc device

Abstract

Abstract PURPOSE:To allow a signal control processor to use a servo control processor for independent address transmission and address read by invalidating an address stored in an address buffer means at the specific position of each sector based on the timing of address reproduction of the address reproducing means. CONSTITUTION:A signal control processor 7 stores an address to an address buffer 6, an address reproduction section 4 sets an address invalid signal at a sector head position to clear the address stored in the address buffer 6 periodically. Thus, when an address read by a servo signal processor 5 is valid, the address buffer 6 always represents the address of a current position. Then the servo control processor 5 sends an RD signal 24 to the address buffer 6 to read the address through an address bus 23. Thus, the servo control processor 5 reads the address from the address buffer 6 in an optional timing independently of the signal control processor 7.

Inventors

• 👤 Tadashige Furuya
• 👤 古谷　忠滋
• 👤 Takashi Ishida
• 👤 隆 石田
• 👤 Kenzo Ishibashi
• 👤 謙三 石橋
• 👤 Shunji Ohara
• 👤 俊次 大原

Bibliographic Details