System and method for customizing an imaging device

• US 20040001218A1
• Filed: 06/27/2002
• Published: 01/01/2004
• Est. Priority Date: 06/27/2002
• Status: Abandoned Application

• Current Assignee: Hewlett-Packard Development Company, L.P. (HP Inc.)
• Original Assignee: Hewlett-Packard Development Company, L.P. (HP Inc.)
• Inventors: Christiansen, Robert Douglas
• Application Number:
  US10/183,818
• Publication Number:
  US 20040001218A1
• Time in Patent Office: Days
• US Class Current: 358/1.15
• CPC Class Codes: G06F 3/1204 resulting in reduced user or operator actions, e.g. presetting, automatic actions, using hardware token storing data
• CPC Class Codes: G06F 3/1244 Job translation or job parsing, e.g. page banding
• CPC Class Codes: G06F 3/1277 using filter pipeline, e.g. outside the driver, adding traps
• CPC Class Codes: G06F 3/1285 Remote printer device, e.g. being remote from client or server

Abstract

A method and system for customizing an imaging device by electronically downloading a parser is provided. The method provides a computer executable methodology for downloading a dynamically customizable parser into the imaging device and employing a server in the imaging device to serve the downloaded parser to parse a data stream. The system provides a dynamically configurable system for parsing data. With the present system and method, a parser can be replaced or modified without having to physically replace hardware and/or firmware components.

Claims

1. A customizable imaging device that generates image data from a parsed input data, the imaging device comprising:

one or more parser applets each for parsing a computer file into a parsed input data;

a server for running one or more of the parser applets; and

a parser loader for loading one or more of the parser applets into the server causing the imaging device to generate customizable image data based on which of the parser applets are loaded.

2. The imaging device of claim 1, wherein the one or more parser applets are embodied as dynamically loadable and unloadable applets.

3. The customizable imaging device of claim 1, further comprising:

a photoconductor for forming a latent electrostatic image;

a charge roller for charging a surface of the photoconductor to a predetermined voltage;

a laser scanner that emits a laser beam onto the surface of the photoconductor to form the latent electrostatic image; and

a software configured processing device, comprising;

a formatter for converting the printer input data into a stream of binary print data that is an electronic representation of an image to print; and

a controller that supplies the binary print data to the laser scanner.

4. The customizable imaging device of claim 1, further comprising a device state, where the device state is managed by one or more parser applets.

5. The customizable imaging device of claim 1, further comprising a server state, where the server state is managed by the one or more parser applets.

6. The customizable imaging device of claim 1, where one or more parser applets are programmed to perform at least one of a simple network management protocol get and set call.

7. A parsing system, comprising:

an electronically loadable parser;

a server that serves applets; and

a loader that receives the electronically loadable parser in one or more computer communications and loads the electronically loadable parser into the server.

8. The system of claim 7, where a parser loaded into the server can parse input data that comprises print data and control data, the control data comprising one or more token sequences of a tokenized page description language.

9. The system of claim 8, where the tokenized page description language is at least one of PCL 3, PCL 4, PCL 4e, PCL 5, PCL 5c and PCL 5e.

10. The system of claim 7, where the electronically loadable parser is software written in a web centric, object oriented programming language that facilitates serving the parser loaded into the server as an applet.

11. The system of claim 10, where the parser loaded into the server is one of an applet and a chailet.

12. The system of claim 10, where the web centric, object oriented programming language is JAVA.

13. The system of claim 7, where the parser loaded into the server is one of an applet and a chailet.

14. The system of claim 7, where the electronically loadable parser comprises a parse tree, one or more callbacks, and an input parser.

15. The system of claim 7, where the server is one of a webserver, and a chailet server.

16. The system of claim 7, where the server and the parser loaded in the server reside on an imaging device.

17. A method for customizing a printer, comprising:

identifying one or more printer control language token sequences for which an action is desired when the token sequence is identified in an input;

programming one or more callbacks to perform the desired action;

building a parse tree for defining the valid token sequences;

associating one or more callbacks with a token sequence by relating a parse tree leaf node with one or more callbacks;

programming a parser to facilitate traversing the parse tree based on a received token sequence and selectively invoking a callback associated thereto; and

loading, by a computer communication, the parse tree, the callbacks, and the parser into the printer to customize output generated by the printer.

18. The method of claim 17, further comprising:

verifying at least one of the parser and the callbacks; and

establishing a level of trust for at least one of the parser and the callbacks.

19. The method of claim 18, further comprising selectively loading the parser and the callbacks into the printer based on the level of trust.

20. The method of claim 17, further comprising:

receiving an input that comprises one or more token sequences and one or more printable elements;

dynamically parsing the input as it is received;

traversing the parse tree based on the dynamic parsing; and

selectively invoking one or more callbacks based, at least in part, on traversing the parse tree.

21. The method of claim 20, further comprising programming a callback to selectively update the input to produce an output by at least one of adding, removing, and changing at least one of the one or more printable elements and one or more token sequences.

22. The method of claim 20, further comprising programming a callback to selectively alter an operation of the printer.

23. The method of claim 22, wherein the programming alters the operation of the printer by updating a printer component.

24. The method of claim 22, where the programming includes making at least one of, an SNMP get call, and a SNMP set call.

25. A method for loading a parser into an imaging device, comprising the steps of:

downloading a parser as an applet into an imaging device; and

dynamically loading the parser in a software executable server within the imaging device to control parsing of print stream data.

26. The method of claim 25, further comprising dynamically unloading a previously loaded parser to be replaced by the downloaded parser.

27. The method of claim 25, further comprising dynamically loading a plurality of parsers within the server.

28. A system for customizing a printer, comprising:

software means for dynamically parsing a PCL data stream; and

communication means for receiving a signal encoding the software means into a printer.

29. The system of claim 28 where the software means for dynamically parsing the PCL data stream are dynamically customizable by a signal.

30. A data packet for transmitting a parser to a printer, the data packet comprising:

a first field that stores one or more computer executable parsing logic instructions; and

a second field that stores one or more computer readable data structure elements accessed by the parsing logic instructions to facilitate parsing data.

31. The data packet of claim 30, further comprising a third field that stores one or more computer executable callback instructions that are invoked by one or more parsing logic instructions to perform a desired action.

32. A computer readable medium storing computer executable components of a parsing system, the computer readable medium comprising:

a parsing component that can be received in an imaging device via a computer communication and loaded as an applet in the imaging device; and

a serving component that accepts the parsing component and serves the parsing component as an applet to facilitate dynamic customizable, real time parsing of an input data.