Method and apparatus for inserting an error signal onto a bidire

Details Method and apparatus for inserting an error signal onto a bidire Method and apparatus for inserting an error signal onto a bidire

1998-09-02

2000-05-23

Chung, Phung M.

Error detection/correction and fault detection/recovery

Pulse or data error handling

Testing of error-check system

G06F 1100

Patent

active

060676477

ABSTRACT:
One embodiment of the present invention includes an apparatus for inserting an error signal onto a bidirectional signal line. The apparatus includes a first switch for decoupling a first terminal of the bidirectional signal line from a second terminal of the bidirectional signal line, a second switch for coupling the error signal to the first terminal, and a third switch for coupling the error signal to the second terminal. The apparatus also includes a control unit for generating a switch enable signal. When the switch enable signal is deasserted, the first switch closes and the second and third switches open, such that the first terminal is coupled to the second terminal. When the switch enable signal is asserted, the first switch opens and the second and third switches close, such that the error signal is coupled to the first and second terminals.

REFERENCES:
patent: 4903270 (1990-02-01), Johnson et al.
patent: 5001712 (1991-03-01), Splett et al.
patent: 5058112 (1991-10-01), Namitz et al.

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