Data recording medium, recording and reproducing system and resi

Details Data recording medium, recording and reproducing system and resi Data recording medium, recording and reproducing system and resi

1997-12-16

2000-12-12

Pitts, Harold I.

Dynamic information storage or retrieval

Storage medium structure

Optical track structure

235487, 235492, 360 2, 369 47, G11B 724

Patent

active

061607886

ABSTRACT:
A CPU can execute, for example, 4-bit processes, a program for data processes has been written in an ROM, and an RAM has memory areas for a work area and a user area of the CPU. Data supplied from the outside through an input terminal and an I/F circuit is recorded in a user area in the RAM. The recorded data is read out and supplied to the outside through an input/output terminal. An LCD displays a size (data residual amount) of an unused area in the RAM by, for example, a bar graph type. The ROM, RAM, I/F circuit, and driver are connected to the CPU by a bus line.

REFERENCES:
patent: 4973828 (1990-11-01), Naruse et al.
patent: 5122643 (1992-06-01), Gamou et al.
patent: 5478995 (1995-12-01), Wallerstorfer
patent: 5671211 (1997-09-01), Akashi et al.
patent: 5801364 (1998-09-01), Kara et al.
patent: 6019284 (2000-02-01), Freeman

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