Patent US4922193A successfully refreshed from Google Patents.
US4922193A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Printed circuit card for a personal computer
Assignee: Siemens AG
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Filing: 1988-08-24
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Granted: 1990-05-01
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Expires: 2008-08-24
Abstract
Abstract The invention relates to a modularly constructed PC-card formed of an application-independent main board and at least one module board which is connected to the main board and which has application-dependent hardware, for identifying the module board presently connected to the main board. By interpreting the identifier, the current module configuration is always known.
Inventors
- 👤 Thomas Bunata
- 👤 Robert Hollfelder
- 👤 Reiner Zieglmeier
- 👤 Thomas Steuer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 09:03
CPC Classifications
G; G06; G06F; G06F11/00; G06F11/006
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
128 words
A printed circuit card composed of a main board (MB) and at least one module board (M1) connected to said main board (MB), and having contact terminals PCS for connection to a control device, such as a personal computer (PC), whereby said module board (MB) includes means for identification, characterized by: said module board (M1) contains at least one memory means (ROM1); and an identifiedr of the module board (M1) is stored in said memory means (ROM1), in that said identifier is composed of an identification code of said module board (M1) and of additional information about the circuits mounted on said module board (M1), and in that said identifier is stored under an address in the memory means (ROM1) which is identical for every module board (M1).
Claim 2
Dependent Claim
128 words
A printed circuit card composed of a main board (MB) and at least one module board (M1) connected to said main board (MB), and having contact terminals PCS for connection to a control device, such as a personal computer (PC), whereby said module board (MB) includes means for identification, characterized by: said module board (M1) contains at least one memory means (ROM1); and an identifiedr of the module board (M1) is stored in said memory means (ROM1), in that said identifier is composed of an identification code of said module board (M1) and of additional information about the circuits mounted on said module board (M1), and in that said identifier is stored under an address in the memory means (ROM1) which is identical for every module board (M1).
Claim 3
Dependent Claim
37 words
A printed circuit card according to claim 1, characterized in that said main board (MB) contains a circuit arrangement required for communication with said control device (PC); and said module board (M1) comprises an application-dependent circuit arrangement.
Claim 4
Dependent Claim
23 words
A printed circuit card according to claim 1 or 2, characterized in that said identifier can be interpreted by said control device (PC).
Claim 5
Dependent Claim
26 words
A printed circuit card according to claim 1 or 2, characterized in that said identifier can be interpreted by circuits mounted on said main board (MB).
References Cited (Backward Citations)
US4055802A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-04-30 | 1993-10-30 | 1994-05-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-04-30 | 1997-10-30 | 1998-05-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-04-30 | 2001-10-30 | 2002-05-01 | $7700.00 | Window Closed / Lapsed |