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Browse Prior Art Database

Rework Daughter Card

IP.com Disclosure Number: IPCOM000110641D
Original Publication Date: 1992-Dec-01
Included in the Prior Art Database: 2005-Mar-25
Document File: 1 page(s) / 91K

Publishing Venue

IBM

Related People

Braun, R: AUTHOR [+4]

Abstract

It is proposed to define small cards on which components are mounted which change or supplement the function of the mother board.

This text was extracted from an ASCII text file.
This is the abbreviated version, containing approximately 100% of the total text.

Rework Daughter Card

       It is proposed to define small cards on which components
are mounted which change or supplement the function of the mother
board.

      It is known to implement rework, consisting of wiring and
components, directly on the mother board.

      The rework daughter cards (RDCs) may be defined in advance and
processed to be readily available.  Being suitably designed, they
improve the electrical characteristics.  The connections between the
RDCs and the interface connectors on the mother board may take the
form of a rework wiring foil or discrete wiring means.  The RDCs are
universal, as their logic functions are implemented by programmable
logic.  Also conceivable is a programming port which, through a
commercially available interface, permits the integrated circuits to
be programmed in the assembled state.

      Damaged RDCs are readily exchangeable without damaging or
jeopardizing other components or changing the wiring.  The RDCs may
be soldered to or plugged into the mother board.  Depending upon the
rework required, several such cards may be installed.