System and method for the passive monitoring and reporting of printer-related data on USB cables
Provided is a computer-implemented system and method for monitoring printer-related data on USB cables. A USB-compatible device comprising a field programmable gate array and a microprocessor is placed in-line between a non-networked computer and a printer and monitors the line for print-related data. Once detected, the print-related data is transmitted via a radio frequency to a base station. The base station subsequently compiles the print-related data and relays the data to a printer reporting system.
1. A system for passively monitoring non-networked-printer data, the system comprising:
a USB device; a base station; and a central server, wherein
the USB device comprising male and female USB connectors and a non-volatile memory, the device configured to connect between a computer and a non-networked printer via the USB connectors, the device configured to passively monitor USB data traffic between the computer and the non-networked printer,
the device further configured to analyze USB data packets having a pre-determined packet id and a payload, wherein the pre-determined packet id indicates the USB data packet is a printer-related data packet;
the device further configured to determine a printer-related protocol based on the analyzed USB data packet;
the device further configured to analyze the payload of an analyzed USB data packet and determine a print-related command in the payload by string searching the analyzed USB data packet for a specific printer-related string;
the device further configured to determine printer-related data and store the printer-related data in the non-volatile memory;
the device further configured to analyze the non-volatile memory for any non-reported printer-related data;
the device further configured to report printer-related data stored in the non-volatile memory to the base station and further configured to flag in the non-volatile memory the reported printer-related data as reported, wherein the base station and the device communicate via a private network;
the device further configured to remove all printer-related data that has been flagged as reported from the non-volatile memory;
the base station comprising two network interfaces, the first interface for connecting to the device, the second interface for connecting to the central server;
the base station configured to receive printer-related data and further configured to report printer-related data to the central server; and
the central server configured to receive printer-related data from the base station.
2. A method for passively monitoring non-networked-printer-related data, the method comprising:
passively monitoring USB data by receiving at a device a USB data packet exchanged between a workstation and a non-networked printer via a USB connector wherein a USB data packet comprises a packet id and a payload;
determining if the monitored USB data packet is a printer-related USB data packet by analyzing the packet id of the USB data packet, wherein the packet id indicates the USB data packet is a printer-related data packet;
looking up printer-related commands in the printer-related USB data wherein looking up comprises searching for pre-determined strings in the payload associated with the USB data packet;
searching a memory of the device for stored printer-related information that has not been reported to a server;
reporting the stored printer-related information to the server based upon the looked-up printer-related commands; and
flagging the stored printer-related information as reported.
3. The method as described in claim 2 , wherein the device is a pre-configured USB device placed in communication with both the workstation and the non-networked printer.
4. The method as described in claim 3 , wherein the USB device comprises a male USB connector and a female USB connector.
5. The method as described in claim 2 , wherein analyzing the packet id of a USB data packet analyzes if the packet id is a Token IN.
6. The method as described in claim 5 , wherein looking up printer-related commands analyzes the payload of the USB data packet for Printer Job Language commands.
7. The method as described in claim 5 , wherein looking up printer-related commands searches for the string “@PJ” in a USB data packet.
8. The method as described in claim 2 , wherein analyzing the packet id of a USB data packet analyzes if the packet id is a Token OUT.
9. The method as described in claim 8 , wherein looking up printer-related commands analyzes the payload of the USB data packet for Printer Control Language commands.
10. The method as described in claim 2 wherein looking up printer-related commands increments a counter.
11. The method as described in claim 10 wherein reporting printer-related information comprises reporting the counter.
12. The method as described in claim 2 wherein looking up printer-related commands comprises querying a lookup table.
13. The method as described in claim 2 wherein reporting printer-related information to a server comprises reporting printer-related information to a base station on a private network.
14. The method as described in claim 13 wherein reporting printer-related information further comprises the base station reporting printer-related information to a central server via a network.
15. A system for monitoring non-networked printer data, the system comprising:
a workstation connected to a non-networked printer via a USB device;
a base station; and
a central server
wherein the USB device passively monitors USB data exchanged between the workstation and the non-networked printer by receiving a USB data packet exchanged between the workstation and the non-networked printer wherein the USB data packet comprises a packet id and a payload,
determines print-related information from the USB data packet by analyzing the packet id of the USB data packet, wherein the packet id indicates the USB data packet is a printer-related data packet,
looks up print-related commands in the USB data packet wherein looking up comprises searching for pre-determined strings in the payload;
searches a memory for non-reported print-related information;
reports the non-reported print-related information to the base station via a first network;
flags the non-reported print-related information as reported; and
wherein the base station reports print-related information to the central server via a second network.