System and method for controlling the distribution of data translation components to portable data collection devices

• US 20060138236A1
• Filed: 02/23/2006
• Published: 06/29/2006
• Est. Priority Date: 07/29/2002
• Status: Active Grant

• Current Assignee: The Code Corporation (Brady Corporation)
• Original Assignee: The Code Corporation (Brady Corporation)
• Inventors: Hepworth, Paul, Zhou, Weiyang
• Granted Patent: US 7,621,453 B2
• Time in Patent Office: Days
• US Class Current: 235/454
• CPC Class Codes: G06K 7/14 using light without selection of wavelength, e.g. sensing reflected white light G06K7/10831 - G06K7/1097 take precedence

Abstract

A system (10) includes a data collection device (12) for reading a machine readable data storage medium (38) and generating formatted data in accordance with data manipulation commands of a rules file (43). A protected rule file creation system: i) generates the rule file (43); ii) encrypts the rule file (43) to generate a protected rule file (39) which, when deciphered using a source key (31) yields the rule file (43); and iii) generates a license record (35). The license record (35) comprises the source key (31) and a source identifier (168). A trusted license file distribution system (17) encrypts the license record (35) using a private key (97) of a public/private key pair to generate a license file (41). The data collection device (12) comprises: i) a non-volatile memory storing a reader ID (93) and a public key (95); and ii) a processor (20) operating a decoder (72) and an interpreter (84). The interpreter (84) receives decoded data (134) from the decoder (72) and manipulates the decoded data (134) in accordance with the plurality of data manipulation commands defined in the rule file (43) to generate the formatted data (136). The interpreter module (84) obtains the rule file (43) by: i) receiving the protected rule file (39); ii) receiving the license file (41); iii) deciphering the license record (35) of the license file (41) using the public encryption key (95); and iv) if the identification of an authorized reader (37) matches the reader ID (93), deciphering the protected rule file (39) using the source license key (31) to recover the rule file (43).

Claims

1. A data collection device for reading a machine readable data storage medium comprising data encoded in a readable format, the data collection device comprising:

a) a non-volatile memory storing a reader ID and a public key;

b) a processor operating an embedded decoder system comprising a decoder module and an interpreter module;

i) the decoder module receiving digital data from a medium reading system, the digital data comprising a representation of the machine readable data storage medium, determining the data encoded in the machine readable data storage medium, and generating decoded data; and

ii) the interpreter module receiving the decoded data and manipulating the decoded data in accordance with the plurality of data manipulation commands defined in a rule file to generate formatted data, the interpreter module obtaining the rule file by;

receiving a protected rule file, the protected rule file comprising an encrypted representation of the rule file;

receiving a license file, the license file comprising an encrypted representation of a license record, the license record comprising identification of an authorized reader, a source identifier, and a source license key;

deciphering the license record using the public encryption key and a predetermined asymmetric encryption algorithm; and

if the identification of an authorized reader matches the reader ID, deciphering the protected rule file using the source license key to recover the rule file.

2. The data collection device of claim 1, further comprising a communication module coupled to the processor and transferring the formatted data to a remote system.

3. The data collection device of claim 1, wherein:

the reading system captures encoded data of a machine readable data storage medium which includes encoded data representing the license file;

the decoder module receives digital data from the reading system representing the license file; and

the interpreter module receives decode data representing the license file and includes a license file handling module for;

recognizing the presence of a license file within decoded data;

obtaining the public encryption key and deciphering the license record of the license file; and

storing the source license key in combination with the source identification if the reader ID matches the identification of an authorized reader from the license record.

4. The data collection device of claim 3, wherein the license file handling module only stores the source license key in combination with the source identification if an expiration date of the license record has not yet passed.

5. The data collection device of claim 1, wherein:

the reading system further captures encoded data of a machine readable data storage medium which includes encoded data representing the protected rule file;

the decoder module receives digital data from the reading system representing the protected rule file; and

the interpreter module receives decoded data representing the protected rule file and includes a preprocessor for;

recognizing the presence of a protected rule file within decoded data;

determining the source identification associated with the protected rule file;

obtaining the source license key associated with the source identification; and

deciphering the protected rule file using the source license key to recover the rule file.

6. The data collection device of claim 5 wherein:

the interpreter module 84 comprises an expression library, the expression library including a plurality of data manipulation commands and, in association with each of the plurality of data manipulation commands, an instruction for performing the data manipulation command; and

the interpreter module provides for manipulating the decoded data by, for each data manipulation defined in the rule file, performing the instruction associated with the data manipulation.

7. The data collection device of claim 6, wherein:

the reading system captures encoded data of a machine readable data storage medium which includes encoded data representing the license file;

the decoder module receives digital data from the reading system 21 representing the license file; and

the interpreter module receives decode data representing the license file and includes a license file handling module for;

recognizing the presence of a license file within decoded data;

obtaining the public encryption key and deciphering the license record of the license file; and

storing the source license key in combination with the source identification if the reader ID matches the identification of an authorized reader from the license record.

8. The data collection device of claim 7, wherein the license file handling module only stores the source license key in combination with the source identification if an expiration date of the license record has not yet passed.

9. A system for reading a machine readable data storage medium comprising data encoded in a readable format and generating formatted data, the formatted data comprising the decoded data manipulated in accordance with data manipulation rules of a rule file;

the system comprising;

a protected rule file creation system for;

generating the rule file;

encrypting the rule file to generate a protected rule file which, when deciphered using a source key yields the rule file; and

generating a license record, the license record comprising the source key and a source identifier;

a trusted license file distribution system for encrypting the license record using a private key of a public/private key pair to generate a license file; and

a data collection device for reading the machine readable data storage medium, the data collection device comprising;

a non-volatile memory storing a reader ID and a public key of the public/private key pair;

a processor operating an embedded decoder system comprising a decoder module and an interpreter module;

the decoder module receiving digital data from a medium reading system, the digital data comprising a representation of the machine readable data storage medium, determining the data encoded in the machine readable data storage medium, and generating decoded data; and

the interpreter module receiving the decoded data and manipulating the decoded data in accordance with the plurality of data manipulation commands defined in a rule file to generate formatted data, the interpreter module obtaining the rule file by;

receiving the protected rule file;

receiving the license file;

deciphering the license record using the public encryption key; and

if the identification of an authorized reader matches the reader ID, deciphering the protected rule file using the source license key to recover the rule file.

10. The system of claim 9, wherein:

the reading system captures encoded data of a machine readable data storage medium which includes encoded data representing the license file;

the decoder module receives digital data from the reading system 21 representing the license file; and

the interpreter module receives decode data representing the license file and includes a license file handling module for;

recognizing the presence of a license file within decoded data;

obtaining the public encryption key and deciphering the license record of the license file; and

storing the source license key in combination with the source identification if the reader ID matches the identification of an authorized reader from the license record.

11. The system of claim 10, wherein:

the license record further comprises an expiration date; and

the license file handling module only stores the source license key in combination with the source identification if an expiration date of the license record has not yet passed.

12. The system of claim 9, wherein:

the reading system further captures encoded data of a machine readable data storage medium which includes encoded data representing the protected rule file;

the decoder module receives digital data from the reading system representing the protected rule file; and

the interpreter module receives decode data representing the protected rule file and includes a preprocessor for;

recognizing the presence of a protected rule file within decoded data;

determining the source identification associated with the protected rule file;

obtaining the source license key associated with the source identification; and

deciphering the protected rule file using the source license key to recover the rule file.

13. The system claim 12, wherein:

the interpreter module 84 comprises an expression library, the expression library including a plurality of data manipulation commands and, in association with each of the plurality of data manipulation commands, an instruction for performing the data manipulation command; and

the interpreter module provides for manipulating the decoded data by, for each data manipulation defined in the rule file, performing the instruction associated with the data manipulation.

14. The system of claim 13, wherein:

the reading system captures encoded data of a machine readable data storage medium which includes encoded data representing the license file;

the decoder module receives digital data from the reading system 21 representing the license file; and

the interpreter module receives decode data representing the license file and includes a license file handling module for;

recognizing the presence of a license file within decoded data;

obtaining the public encryption key and deciphering the license record of the license file; and

storing the source license key in combination with the source identification if the reader ID matches the identification of an authorized reader from the license record.

15. The system of claim 14, wherein the license file handling module only stores the source license key in combination with the source identification if an expiration date of the license record has not yet passed.

16. A method of operating a data collection device for reading a machine readable data storage medium comprising data encoded in a readable format, the method comprising:

storing a reader ID and a public key in a non-volatile storage of the data collection device;

detecting the machine readable data storage medium and determining the data encoded in the machine readable data storage medium to generate decoded data; and

obtaining a rule file by;

receiving a protected rule file, the protected rule file comprising an encrypted representation of the rule file;

receiving a license file, the license file comprising an encrypted representation of a license record, the license record comprising identification of an authorized reader, a source identifier, and a source license key;

deciphering the license record using the public encryption key and a predetermined encryption algorithm; and

if the identification of an authorized reader matches the reader ID, deciphering the protected rule file using the source license key to recover the rule file; and

manipulating the decoded data in accordance with a plurality of data manipulation commands defined in the rule file to generate formatted data.

17. The method of claim 16, further comprising transferring the formatted data to a remote system.

18. The method of claim 16, wherein:

the license file is received by;

capturing encoded data of a machine readable data storage medium which includes an encoded data representing the license file and generating decoded data representing the license file;

recognizing the presence of a license file within decoded data; and

the method further compromises storing the source license key in combination with the source identification if the reader ID matches the identification of an authorized reader from the license record after deciphering the license record of the license file using the public encryption key.

19. The method of claim 18, wherein the source license key in combination with the source identification is only stored if an expiration date of the license record has not yet passed.

20. The method of claim 16, wherein the protected rules file is received by:

capturing encoded data of a machine readable data storage medium which includes encoded representation of the protected rules file and generating decoded data representing the protected rules file;

recognizing the presence of a protected rule file within decoded data; and

determining the source identification associated with the protected rule file;

obtaining the stored source license key associated with the source identification; and

deciphering the protected rule file using the source license key to recover the rule file.

21. The method of claim 20, wherein:

manipulating the decoded data to generate the formatted data comprises, for each data manipulation defined in the rule file, performing an instruction associated with the data manipulation in an expression library.

22. The method of claim 21, wherein:

the license file is received by;

capturing encoded data of a machine readable data storage medium which includes encoded data representing the license file and generating decoded data representing the license file;

recognizing the presence of a license file within decoded data; and

the method further compromises storing the source license key in combination with the source identification if the reader ID matches the identification of an authorized reader from the license record after deciphering the license record of the license file using the public encryption key.

23. The method of claim 22, wherein the source license key in combination with the source identification is only stored if an expiration date of the license record has not yet passed.