Circuit board and information storing apparatus equipped...

Details Circuit board and information storing apparatus equipped... Circuit board and information storing apparatus equipped...

2005-10-25

2005-10-25

Le, Thong Q. (Department: 2827)

Static information storage and retrieval

Read/write circuit

Reexamination Certificate

active

06958941

ABSTRACT:
In a circuit board including an analog circuit and a digital circuit, the S/N ratio reduction resulting from the interference of digital signals with analog signals is suppressed. The circuit board includes a digital signal processing section forming part of the digital circuit, digital signal external conductors connected to the digital signal processing section, and digital signal output control means for interrupting the transmission of the digital signals from the digital signal processing section to the digital signal external conductors. A decrease in the limitation for the wiring pattern and the device arrangement provides an increase in the degree of freedom for designing, thereby making it possible to miniaturize the circuit board and to reduce the manufacturing cost thereof.

REFERENCES:
patent: 5185736 (1993-02-01), Tyrrell et al.
patent: 5801652 (1998-09-01), Gong
patent: 11-261392 (1999-09-01), None

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