Integrated circuit for generating indexing data in a CD player

Details Integrated circuit for generating indexing data in a CD player Integrated circuit for generating indexing data in a CD player

1988-11-14

1990-06-05

Canney, Vincent P.

Dynamic information storage or retrieval

Binary pulse train information signal

Binary signal gain processing

G11B 700

Patent

active

049320181

ABSTRACT:
An integrated circuit for a CD player includes an EFM decoder which converts an EFM signal inputted from a compact disc into symbols. Subcode data which includes first, second and third areas is outputted from the EFM decoder and stored in a first shift register. Data in the first area of the subcodes can be wholly stored in a memory circuit which is controlled on the basis of data in the second area of the subcodes and a signal applied from an external source, for example, a microcomputer by an R/W control circuit. Data in the third area of the subcodes is applied to the memory circuit as a writing address and address data inputted from the microcomputer is applied to the memory circuit as a reading address. One of data read from the memory circuit and data of the subcodes is selectively outputted from a selector to a second shift register which outputs the inputted data in response to clocks from the microcomputer to the same in a bit-serial fashion.

REFERENCES:
patent: 4495474 (1985-01-01), Nishikawa et al.
patent: 4541093 (1985-09-01), Furuya et al.
patent: 4682317 (1987-07-01), Tomisawa
patent: 4716558 (1987-12-01), Katayama et al.
patent: 4796247 (1989-01-01), Vogelsang

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