Electronic system, components and method for tracking files

• US 5,751,221 A
• Filed: 01/27/1995
• Issued: 05/12/1998
• Est. Priority Date: 01/27/1995
• Status: Expired due to Fees

• Current Assignee: Steelcase Development Inc.
• Original Assignee: Steelcase Incorporated
• Inventors: Branc, Joseph R., Stanfield, Joel D., Miller, William L., Feldpausch, Thomas G.
• Primary Examiner(s): ZIMMERMAN, BRIAN A
• Application Number:
  US08/379,944
• Time in Patent Office: 1,201 Days
• Field of Search: 340/825.49, 340/825.54, 340/825.35, 340/572, 364/401
• US Class Current: 340/5.74
• CPC Class Codes: G06F 16/10 File systems; File servers
• CPC Class Codes: G06F 16/93 Document management systems

Abstract

A file tracking system including a processor, which maintains and interfaces with a database, a plurality of file folder retainers, and a plurality of file folders. The file tracking system actively maintains and updates the database, which includes file information, file location, and unique file address for the plurality of files, by providing interactive communication between the processor, the folder retainers, and the file folders. Each file folder may include an indicator light, such as an LED, which a user may cause to blink when trying to locating the file folder at a location accessed from the database.

Claims

1. A file tracking system comprising:

a database for maintaining file location and unique file addresses for a plurality of files;

a processor for interfacing with said database and issuing control signals;

a bus connected to said processor;

a folder retainer connected to said processor by said bus;

a plurality of file folders, each file folder including an addressable device adapted to be electrically connected to said bus when the file folder is placed in said folder retainer, each addressable device being responsive to a control signal including the unique address associated with the addressable device to transmit a signal back to said processor so that said processor may maintain the file location of each file in said database wherein each of said file folders further include;

a surface;

a first conductor on said surface for providing control signals to said addressable device when the file folder is placed in said folder retainer; and

a second conductor on said surface for providing a ground to said addressable device, wherein said first and second conductors are strips of conductive tape provided on said surface of the file folders.

2. A file tracking system comprising:

a database for maintaining file folder information including file location, and a unique address of each file;

a processor for interfacing with said database and issuing control signals; and

a plurality of file folders, each file folder including an addressable switch and an indicator, said indicator is activated when said addressable switch receives a control signal from said processor including the unique address corresponding to the file folder,

wherein said processor is adapted to periodically poll said file folders to obtain information from each file folder, detect differences between the obtained information and the file folder information stored in said database, and to update said database when said processor detects a difference between the file folder information stored in said database and the polled information.

3. The file tracking system of claim 2, wherein said processor detects when file folders have been removed, added, moved, and returned within the system.

4. The file tracking system of claim 3, wherein said processor detects the location of the file folders and determines that a file folder has been moved when the file folder has a detected location that is different from the location previously stored in said database.

5. The file tracking system of claim 3, wherein said processor detects the presence of the file folders by determining the unique address stored in said addressable switches of each file folder and determines that a new file folder has been added to the system when the new file folder has a unique address that was not previously stored in said database.

6. The file tracking system of claim 5, wherein said processor automatically creates a database entry for the new file folder, inserts the detected unique address associated therewith into an address field, and inserts the location at which the new file folder was detected into a location field in said database.

7. The file tracking system of claim 3, wherein said processor detects the presence of the file folders by determining the unique address stored in the addressable switches of each file folder and determines that a file folder has been removed when the file folder had a particular location stored in said database and said processor determines that the file folder is no longer present at that location.

8. The file tracking system of claim 7, wherein said processor automatically updates said database to indicate that the removed file folder was removed, a time and date that the filed folder was removed, and an identity of an individual who removed the file folder.

9. The file tracking system of claim 8, wherein said processor determines the identity of the individual who removed the file folder by determining which individual last caused an indicator light on the file folder to blink.

10. The file tracking system of claim 8, wherein said processor determines the identity of the individual who removed the file folder by awaiting a subsequent detection of the file folder by said processor and determining which individual is associated with the location in which said processor detects the file folder.

11. The file tracking system of claim 2, wherein said processor further:

receives a reply signal from the polled file folder, which was transmitted in response to a control signal transmitted by said processor to the polled file folder, the reply signal including the unique address corresponding to the polled file folder;

verifies the file location in the database corresponding to the unique address of the polled file folder received in the reply signal; and

updates the database to indicate a new file location for the polled file folder when the location from which the reply signal was transmitted is different from the file location previously stored in the database.

12. In a file tracking system including a processor and a plurality of files each having a unique identification code associated therewith and communicatively connected to the processor, a method of maintaining a database including file location, and the identification code of each of the plurality of files, the method comprising the steps of:

periodically polling each of the plurality of files by transmitting a control signal from the processor to a file to be polled;

determining the identification code corresponding to the polled file from the polled file to the processor when the polled file detects the control signal;

verifying the file location in the database corresponding to the identification code of the polled file received in the reply signal; and

updating the database to indicate a new file location for the polled file when the location from which the reply signal was transmitted is different from the file location previously stored in the database.

13. The method of claim 12, further including the steps of:

determining which files are missing and which files are new by comparing the identification codes included in the reply signals with those stored in the database; and

updating the database to indicate the presence, file location, and identification code of a new file when the identification code received in a reply signal does not correspond to an identification code previously stored in the database.

14. The method of claim 12, further including the steps of:

determining which files are missing and which files are new by comparing the identification codes included in the reply signals with those stored in the database;

transmitting a control signal including the identification code of a missing file that is identified in the database but which did not transmit a reply signal during polling; and

updating the database to indicate that the file location of a missing file is not known when the missing file does not respond within a predetermined time period to the control signal including the identification code of the missing file.

15. The method of claim 12, wherein the file tracking system further includes a plurality of folder retainers each having a unique identification code, and the step of periodically polling each of the plurality of files comprises the substeps of:

transmitting a control signal including a unique identification code of a first one of the folder retainers to enable communication with the files located in the first one of the folder retainers;

polling each of the files located in the first one of the folder retainers;

recording as the file location of each responding file, the location and identity of the first one of the folder retainers; and

sequentially transmitting control signals to each of the remaining folder retainers to enable the files stored therein to be separately polled and to enable the recordation of the file location of each responding file.

16. The file tracking system of claim 12, wherein the control signal transmitted from said processor to the file to be polled is sent over a conductor that is communicatively coupled to more than one file to be polled, and the unique identification code corresponding to the polled file is determined based upon information transmitted from the polled file to said processor in response to the control signal.

17. A file tracking system comprising:

a database for maintaining file location and unique file addresses for a plurality of files;

a processor for interfacing with said database to obtain the unique file address of a specified file, and for issuing a control signal including the unique file address obtained from said database for the specified file;

a bus connected to said processor;

a folder retainer connected to said processor by said bus; and

a plurality of file folders, each file folder including an addressable device adapted to be electrically connected to said bus when the file folder is placed in said folder retainer, each addressable device being responsive to the unique address associated with the file contained within the corresponding file folder that is included in a control signal received from said processor.

18. The file tracking system of claim 17 and further including a plurality of folder retainers connected to said processor by said bus and remotely located relative to a memory device in which said database is stored, wherein the file location stored in said database for each of said plurality of files corresponds to the folder retainer in which the corresponding file folder is located.

19. A file tracking system comprising:

a database for maintaining file location and unique file addresses for a plurality of files, said database further maintains user identification data for a plurality of files indicating which user last accessed the file;

a processor for interfacing with said database and issuing control signals;

a bus connected to said processor;

a folder retainer connected to said processor by said bus; and

a plurality of file folders, each file folder including an addressable device adapted to be electrically connected to said bus when the file folder is placed in said folder retainer.

20. The file tracking system of claim 19, wherein said processor determines that a file folder was removed from its last location by sending and receiving signals from said file folders over said bus and comparing information in a received signal to information stored in said database, and said processor automatically updates said database to indicate that the removed file folder was removed and an identity of an individual who removed the file folder.