Equipment for transmitting data and method of the same

Details Equipment for transmitting data and method of the same Equipment for transmitting data and method of the same

1997-09-04

2000-04-11

Hindi, Nabil

Dynamic information storage or retrieval

Control of storage or retrieval operation by a control...

Mechanism control by the control signal

369 59, 36912404, G11B 576

Patent

active

060495146

ABSTRACT:
In equipment for transmitting data and a method for transmitting data according to the invention, main and subordinate modulated data to be used for recording are provided in time division, and a dc level is calculated in advance. The dc level is suppressed on the basis of the calculation result of the dc level, and a modulating data is thereby generated with the dc level suppressed. Thus, the equipment and method according to the invention can be applied to, for example, an optical disc drive and the total construction can be simplified. The circuit blocks for transmission systems can be used in common with different systems.

REFERENCES:
patent: 4567768 (1986-02-01), Satoh et al.
patent: 5151699 (1992-09-01), Moriyama
patent: 5333126 (1994-07-01), Fukuda et al.
patent: 5420844 (1995-05-01), Kawakubo et al.
patent: 5448544 (1995-09-01), Tsuchinaga et al.
patent: 5848037 (1996-04-01), Iwasaki et al.
H. Shirahama Et Al., "A New Fast Pull-In PLL Using Frequency-Difference-Detector," Transactions Of The Institute Of Electronics, Information And Communication Engineers C-11, Published Oct. 1993, vol. J76C-11, No. 10, pp. 679-687.
Patent Abstracts Of Japan, JP 60-000669, Published Jan. 5, 1985, Hitachi Denshi Ltd.

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