Electronic locking system

• US 4,845,490 A
• Filed: 01/28/1987
• Issued: 07/04/1989
• Est. Priority Date: 01/28/1987
• Status: Expired due to Fees

• Current Assignee: Emhart Inc. (Stanley Black & Decker, Inc.)
• Original Assignee: Emhart Industries, Inc. (Stanley Black & Decker, Inc.)
• Inventors: Blewitt, Mary E., Ward, Kathleen E.
• Primary Examiner(s): Weldon, Ulysses
• Application Number:
  US07/007,844
• Time in Patent Office: 888 Days
• Field of Search: 340/825.31, 340/711, 340/747, 340/825.32, 340/286 M, 340/525, 340/524, 235/382, 364/146, 364/189, 364/400, 364/403, 364/130, 70/278
• US Class Current: 340/5.27
• CPC Class Codes: G07C 9/00571 operated by interacting with a central unit
• CPC Class Codes: G07C 9/00904 for hotels, motels, office buildings or the like
• CPC Class Codes: G07C 9/27 with central registration

Abstract

A management apparatus for a locking system includes a computer memory, first computer means for listing in the computer memory the doors having the locks of the system, and second computer means for entering data in the computer memory defining the interrelationships of the doors, which data including the doors of the system which are accessed by other of the doors. A third computer means lists in the computer memory selected ones of the locks of the doors to be operated by each of the keys, and a fourth computer means determines if a path exists according to said data from an outer limit of the locking system to each of the doors selected for operation by the key either directly or via other of the doors selected for operation by the key. Another means determines if an external door or external doors of the system provide access via a path either directly to each of the internal doors or via other of the internal doors of the system to each internal door of the system.

Claims

1. An apparatus for managing a locking system having locks mounted on doors within the system and keys to operate the locks, said apparatus comprising:

a computer memory,

means for listing in said computer memory the doors of the system having locks and labeling each door in the list as being either an external door or an internal door,

means for entering in said computer memory data indicating which of said doors provides access to which other of said doors, and

means for determining if an external door or external doors of the system provide access via a path indicated by said data either directly to each of said internal doors or via other of said internal doors of the system to each of said internal doors of the system.

2. An apparatus as set forth in claim 1 further comprising:

means for listing in said computer memory selected locks of said doors of said system to be operated by each of said keys, and

means for determining if a path exists from an external door or external doors of said system having a lock selected for operation by said key to each internal door having a lock selected for operation by said key either directly by said external door or external doors or indirectly through other of said internal doors having locks selected for operation by said key.

3. An apparatus as set forth in claim 2 further comprising:

means for listing at least some of said internal doors selected for operation by said key to which there is no path leading from an external door of said system selected for operation by said key either directly or via other of said internal doors selected for operation by said key.

4. An apparatus as set forth in claim 1 wherein said means for determining comprises means for tracing a path if it exists according to said data from an external door or external doors of the system either directly to each of said internal doors or via other of said internal doors of the system to each of said internal doors of the system.

5. An apparatus as set forth in claim 1 wherein said means for determining comprises:

second means for determining from said data the doors of the system which access each of the internal doors of said system, and

third means for determining if any of said accessing doors is an external door.

6. An apparatus as set forth in claim 5 wherein said means for determining further comprises:

fourth means for determining from said data other of said doors of the system which access said accessing doors, and

fifth means for determining if any of the other accessing doors is an external door.

7. An apparatus as set forth in claim 1 wherein said locks are electronic locks, and said keys are key cards.

8. A process for managing a locking system having a plurality of locks mounted on a plurality of doors, respectively and a plurality of keys which operate said locks, said process comprising the steps of:

listing in a memory device the doors of said system having the locks of said system,

labeling in said memory device the listed doors which interface to an outer limit of said locking system,

inputting data to said memory device indicating which of said doors are accessible by which other doors of said system,

listing in said memory device selected ones of said locks of said doors to be operated by a first one of said keys,

attempting to locate a path from the outer limit of said locking system to each of said doors selected for operation by said key either directly or through other of said doors selected for operation by said key, and

indicating an error when at least one of said doors selected for operation by said key is not accessible from the outer limit of said locking system either directly or via other of said doors selected for operation by said key.

9. An apparatus for managing a locking system having locks mounted on doors within the system and keys to operate the locks, said apparatus comprising:

a computer memory,

means for listing in said computer memory the doors of the system having locks,

means for entering into said computer memory data indicating which of said doors provide access to which other of said doors, and

computer means for determining if some of said doors of the system are not accessible via other of said doors of the system according to said data.

10. An apparatus as set forth in claim 9 further comprises means for presenting information indicating that one of said doors of the system is not accessible from an outer boundary of the system according to said data.