Dual state memory card having combined and single circuit operation
First Claim
1. A circuit card for use with system boards having a card socket for receiving the edge of a circuit card and containing a plurality of electrically powered contacts for contacting pads adjacent the received card edge and for enabling circuit units of the card, the circuit card comprising:
- a substantially planar card body comprised of insulative material;
a plurality of pads mounted along a first and a second edge of said card; and
a first and a second circuit unit mounted on said card body and connected to pads mounted along said first and second edges, said first and second circuit units being connected to pads mounted on said first edge such that upon insertion of said first edge into a first card socket, said first and second circuit units are enabled in combination, and at least said second circuit unit also being connected to the pads mounted on said second edge such that upon insertion of said second edge into a second card socket, said second circuit unit alone is enabled.
2 Assignments
0 Petitions
Accused Products
Abstract
A printed circuit card having first and second circuit units mounted thereon in connection to terminal pads adjacent two card edges, with the first and second circuit units being in connection to each other and to select pads of a first edge such that upon insertion of that edge into a given card socket, both circuit units are enabled, and the circuit units also being in connection to the pads of a second edge such that upon insertion of that edge into a second card socket, only the second circuit unit is enabled. In the preferred embodiment, the card is a memory module card having buffer and memory circuit units designed to cooperate with each other and with either of standard, buffered or unbuffered memory card sockets in a system board in accordance with insertion of a first or second pad edge in one of the card sockets to automatically provide, either combined circuit unit operation, or single circuit operation. The invention is also applicable to clocked register circuits and series pass devices.
68 Citations
24 Claims
-
1. A circuit card for use with system boards having a card socket for receiving the edge of a circuit card and containing a plurality of electrically powered contacts for contacting pads adjacent the received card edge and for enabling circuit units of the card, the circuit card comprising:
-
a substantially planar card body comprised of insulative material; a plurality of pads mounted along a first and a second edge of said card; and a first and a second circuit unit mounted on said card body and connected to pads mounted along said first and second edges, said first and second circuit units being connected to pads mounted on said first edge such that upon insertion of said first edge into a first card socket, said first and second circuit units are enabled in combination, and at least said second circuit unit also being connected to the pads mounted on said second edge such that upon insertion of said second edge into a second card socket, said second circuit unit alone is enabled. - View Dependent Claims (8, 9)
-
-
2. A circuit card for use with system boards having a card socket for receiving the edge of a circuit card and containing a plurality of electrically powered contacts for contacting pads adjacent the received card edge and for enabling circuit units of the card, the circuit card comprising:
-
a substantially planar card body comprised of insulative material; a plurality of pads mounted along a first and a second edge of said card; and a first and a second circuit unit mounted on said card body and connected to pads mounted along said first and second edges, said first and second circuit units being connected to pads mounted on said first edge such that upon insertion of said first edge into a first card socket, said first and second circuit units are enabled, and at least said second circuit unit also being connected to the pads mounted on said second edge such that upon insertion of said second edge into a second card socket, said second circuit unit is enabled; and said first and second circuit units are connected to the pads mounted on said second edge such that upon insertion of said second edge into the second card socket, said second circuit unit is enabled, and said first circuit unit is disabled. - View Dependent Claims (3, 4, 5, 6, 7, 10, 11, 12, 13, 14, 15, 16)
-
-
17. A circuit system board comprising:
-
a printed circuit board; a card socket for receiving an edge of a circuit card and containing a plurality of electrically powered contacts for contacting the pads on the received edge of the circuit card and for enabling circuit units thereon; and a circuit card comprising; a substantially planar card body comprised of insulative material; a plurality of pads mounted along a first and a second edge of said card; and a first and a second circuit unit mounted on said card body and connected to pads mounted along said first and second edges, said first and second circuit units being connected to pads mounted on said first edge such that upon insertion of said first edge into a first card socket, said first and second circuit units are enabled in combination, and at least said second circuit unit also being connected to the pads mounted on said second edge such that upon insertion of said second edge into a second card socket, said second circuit unit alone is enabled.
-
-
18. A circuit system board comprising:
-
a printed circuit board; a card socket for receiving an edge of a circuit card and containing a plurality of electrically powered contacts for contacting the pads on the received edge of the circuit card and for enabling circuit units thereon; and a circuit card comprising; a substantially planar card body comprised of insulative material; a plurality of pads mounted along a first and a second edge of said card; and a first and a second circuit unit mounted on said card body and connected to pads mounted along said first and second edges, said first and second circuit units being connected to pads mounted on said first edge such that upon insertion of said first edge into a first card socket, said first and second circuit units are enabled, and at least said second circuit unit also being connected to the pads mounted on said second edge such that upon insertion of said second edge into a second card socket, said second circuit unit is enabled; and said first and second circuit units are connected to pads mounted on said second edge such that upon insertion of said second edge into the second card socket, said second circuit unit is enabled, and said first circuit unit is disabled. - View Dependent Claims (19, 20)
-
-
21. In a computer having a system board having a card socket for receiving the edge of a circuit card and containing a plurality of electrically powered contacts for contacting pads adjacent the received card edge and for enabling circuit units of the card;
-
a circuit card mounted on said system board comprising; a substantially planar card body comprised of insulative material; a plurality of pads mounted along a first and a second edge of said card; and a first and a second circuit unit mounted on said card body and connected to pads mounted along said first and second edges, said first and second circuit units being connected to pads mounted on said first edge such that upon insertion of said first edge into a first card socket, said first and second circuit units are enabled in combination, and at least said second circuit unit also being connected to the pads mounted on said second edge such that upon insertion of said second edge into a second card socket, said second circuit unit alone is enabled.
-
-
22. In a computer having a system board having a card socket for receiving the edge of a circuit card and containing a plurality of electrically powered contacts for contacting pads adjacent the received card edge and for enabling circuit units of the card;
-
a circuit card mounted on said system board comprising; a substantially planar card body comprised on insulative material; a plurality of pads mounted along a first and a second edge of said card; and a first and a second circuit unit mounted on said card body and connected to pads mounted along said first and second edges, said first and second circuit units being connected to pads mounted on said first edge such that upon insertion of said first edge into a first card socket, said first and second circuit units are enabled, and at least said second circuit unit also being connected to the pads mounted on said second edge such that upon insertion of said second edge into a second card socket, said second circuit unit alone is enabled, and said first circuit unit is a buffer circuit; and said buffer circuit is connected to said second circuit unit in a configuration such that, when said first edge is inserted in the first card socket, said buffer circuit is directly enabled from the circuit board to buffer signals therefrom and deliver them in a buffered condition to said second circuit. - View Dependent Claims (23, 24)
-
Specification