US5699685A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Central lock system for an automotive vehicle with satellite processors at respective locks
Assignee: Kiekert AG
•
Filing: 1996-05-17
•
Granted: 1997-12-23
•
Expires: 2016-05-17
Abstract
Abstract A centralized lock system for a motor vehicle, provided with a system-specific identity code word which is stored in memories of the satellite processors associated with the door locks as well as in the code word storage memory of the central processor and the code words are transmitted back and forth along the base or line connecting the electronic controller with the door locks. An identity test is effected at these memories and upon failure of the identity test, the door lock and/or electronic controller or all of the door locks and preferably also the electronic controller are deactivated. This prevents ready replacement of the components since the system will not recognize a foreign component and deactivation will occur upon an attempt to substitute a foreign component for one of the original family of components of the system.
Inventors
- 👤 Achim Jahrsetz
- 👤 Frank Kleefeldt
- 👤 Wilfried Ostermann
- 👤 Fred Welskopf
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 04:07
CPC Classifications
E; E05; E05B; E05B77/00; E05B77/46; E05B77/48; B; B60; B60R; B60R25/00; B60R25/10; B60R25/1001; Y; Y10; Y10T; Y10T70/00; Y10T70/60; Y10T70/625; Y10T70/65; Y10T70/70; Y10T70/7051; Y10T70/7062; Y10T70/7107
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
213 words
A centralized lock system for an automotive vehicle having a plurality of lockable doors, said lock system comprising: a plurality of electrically operated automotive vehicle door locks; an electronic controller for said locks and including a central processor and a code word storage memory operatively connected to said processor for storing a controller-identity code word; a respective satellite processor assigned to each of said locks and having a code word storage memory for a respective lock-identity code word; means for storing in each of said memories a system-specific identity code word specific to the centralized lock system; a single conductor bus coupling said satellite processors with said central processor and with each other and means for bidirectional multiplexed communicaton between said processors along said single conductor bus for controlling said satellite processors from said central processor and for back and forth transmission of said system-specific identity code word over said conductor between said central and satellite processors for effecting an identity test of a stored system-specific identity code word with a transmitted system-specific identity code word in at least one of said processors; and means at least said one of said processors for deactivating at least one of said electronic controller and of said door locks upon a failure of said identity test.
Claim 2
Dependent Claim
213 words
A centralized lock system for an automotive vehicle having a plurality of lockable doors, said lock system comprising: a plurality of electrically operated automotive vehicle door locks; an electronic controller for said locks and including a central processor and a code word storage memory operatively connected to said processor for storing a controller-identity code word; a respective satellite processor assigned to each of said locks and having a code word storage memory for a respective lock-identity code word; means for storing in each of said memories a system-specific identity code word specific to the centralized lock system; a single conductor bus coupling said satellite processors with said central processor and with each other and means for bidirectional multiplexed communicaton between said processors along said single conductor bus for controlling said satellite processors from said central processor and for back and forth transmission of said system-specific identity code word over said conductor between said central and satellite processors for effecting an identity test of a stored system-specific identity code word with a transmitted system-specific identity code word in at least one of said processors; and means at least said one of said processors for deactivating at least one of said electronic controller and of said door locks upon a failure of said identity test.
Claim 3
Dependent Claim
52 words
The centralized lock system defined in claim 1 wherein at least one of said door locks has an electrically controlled mechanical theft security device and, upon deactivation, said one of said door locks is shifted by the respective processor into a "theft security on" functional state before the door lock is inactivated.
Claim 4
Dependent Claim
49 words
The centralized lock system defined in claim 2 wherein each of said door locks has an electrically controlled mechanical theft security device and, upon deactivation, all of said door locks are shifted by the respective processors into respective "theft security on" functional states before the door locks are inactivated.
Claim 5
Dependent Claim
64 words
The centralized lock system defined in claim 3 wherein each of said processors is provided with a respective register capable of registering "active" and "inactive" states and whereby with "active" registered in all of said registers, said central processor effects normal control of said locks but with a changeover of the contents of one of said registers to "inactive" normal lock operation is blocked.
Claim 6
Dependent Claim
21 words
The centralized lock system defined in claim 4 wherein, upon failure of said identity test, said system-specific code word is erased.
Claim 7
Dependent Claim
38 words
The centralized lock system defined in claim 4 wherein, upon failure of said identity test, said system-specific code word is replaced in said memories by a new system specific code word supplied by a random code word generator.
Claim 8
Dependent Claim
52 words
The centralized lock system defined in claim 4 wherein said means for storing in each of said memories a system-specific identity code word specific to the centralized lock system includes a diagnostic device connectable to said controller by a diagnosis terminal, said system-specific identity code word being programmable in said diagnostic device.
Claim 9
Dependent Claim
49 words
The centralized lock system defined in claim 1 wherein each of said door locks has an electrically controlled mechanical theft security device and, upon deactivation, all of said door locks are shifted by the respective processors into respective "theft security on" functional states before the door locks are inactivated.
Claim 10
Dependent Claim
64 words
The centralized lock system defined in claim 1 wherein each of said processors is provided with a respective register capable of registering "active" and "inactive" states and whereby with "active" registered in all of said registers, said central processor effects normal control of said locks but with a changeover of the contents of one of said registers to "inactive" normal lock operation is blocked.
Claim 11
Dependent Claim
21 words
The centralized lock system defined in claim 1 wherein, upon failure of said identity test, said system-specific code word is erased.
Claim 12
Dependent Claim
38 words
The centralized lock system defined in claim 1 wherein, upon failure of said identity test, said system-specific code word is replaced in said memories by a new system specific code word supplied by a random code word generator.
Claim 13
Dependent Claim
52 words
The centralized lock system defined in claim 1 wherein said means for storing in each of said memories a system-specific identity code word specific to the centralized lock system includes a diagnostic device connectable to said controller by a diagnosis terminal, said system-specific identity code word being programmable in said diagnostic device.
Claim 14
Independent Claim
235 words
A method of operating a centralized lock system for an automotive vehicle in which the vehicle is provided with a plurality of lockable doors, and the lock system has a plurality of electrically operated automotive vehicle door locks, an electronic controller for said locks and including a central processor and a code word storage memory operatively connected to said processor, a respective satellite processor assigned to each of said locks and having a code word storage memory, and at least one electrical control conductor coupling said satellite processors with said central processor for controlling said satellite processors from said central processor, said method comprising the steps of: (a) storing in each of said memories a system-specific identity code word specific to the centralized lock system by a diagnostic device; (b) repetitively transmitting said system-specific identity code word over said line between said satellite processors and said central processor; (c) effecting an identity test of a stored system-specific identity code word with a transmitted system-specific identity code word in at least one of said processors; and (d) deactivating at least one of said electronic controller and of said door locks upon a failure of said identity test, each of said door locks having an electrically controlled mechanical theft security device, upon deactivation, all of said door locks are shifted by the respective processors into respective "theft security on" functional states before the door locks are inactivated.
Claim 15
Independent Claim
235 words
A method of operating a centralized lock system for an automotive vehicle in which the vehicle is provided with a plurality of lockable doors, and the lock system has a plurality of electrically operated automotive vehicle door locks, an electronic controller for said locks and including a central processor and a code word storage memory operatively connected to said processor, a respective satellite processor assigned to each of said locks and having a code word storage memory, and at least one electrical control conductor coupling said satellite processors with said central processor for controlling said satellite processors from said central processor, said method comprising the steps of: (a) storing in each of said memories a system-specific identity code word specific to the centralized lock system by a diagnostic device; (b) repetitively transmitting said system-specific identity code word over said line between said satellite processors and said central processor; (c) effecting an identity test of a stored system-specific identity code word with a transmitted system-specific identity code word in at least one of said processors; and (d) deactivating at least one of said electronic controller and of said door locks upon a failure of said identity test, each of said door locks having an electrically controlled mechanical theft security device, upon deactivation, all of said door locks are shifted by the respective processors into respective "theft security on" functional states before the door locks are inactivated.
Claim 16
Dependent Claim
34 words
The method defined in claim 13 wherein the repetitive transmission of said system-specific identity code words over said line is effected upon an addition of a door lock or a controller to said system.
Claim 17
Dependent Claim
23 words
The method defined in claim 13 wherein the door locks are deactivated upon energization of a theft-warning system connected to said central processor.
Claim 18
Dependent Claim
19 words
The method defined in claim 13 wherein upon failure of said identity test, said system-specific code word is erased.
Claim 19
Dependent Claim
36 words
The method defined in claim 13 wherein, upon failure of said identity test, said system-specific code word is replaced in said memories by a new system specific code word supplied by a random code word generator.
Claim 20
Dependent Claim
62 words
The method defined in claim 13 wherein each of said processors is provided with a respective register capable of registering "active" and "inactive" states and whereby with "active" registered in all of said registers, said central processor effects normal control of said locks but with a changeover of the contents of one of said registers to "inactive," normal lock operation is blocked.
References Cited (Backward Citations)
US4494114A
Cited
US4494114B1
Cited
US4895009A
Cited
GB2227791A
Cited
GB2226847A
Cited
US5229648A
Cited
DE4003580A1
Cited
US5486812A
Cited
DE4141504A1
Cited
US5534846A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2000-12-22 | 2001-06-23 | 2001-12-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-12-22 | 2005-06-23 | 2005-12-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-12-22 | 2009-06-23 | 2009-12-23 | $7700.00 | Window Closed / Lapsed |