Patent Grant
8154769
1. Field of the Invention
The present invention relates to systems and methods for scanning, printing and reproducing documents. In particular, the present invention relates to a system and methods for encoding instructions and a form type into a document. Furthermore, the present invention relates to method for scanning a document, decoding instructions in the document and executing the decoded instructions.
2. Description of the Background Art
The use and proliferation of paper copiers is well known. Since their introduction, photocopiers have become and essential and basic part of every office and organization. Recently, the functionality of printers and photocopiers has converged into a new device referred to as Multi-Function Printer (MFP). Such multifunction printers have become commonplace and typically include the ability to scan documents, print documents, photocopy documents, and send and receive facsimile transmissions. This in turn has generated a large number of forms and papers that require organization and processing.
Long before the proliferation of copiers made duplication of documents easy and readily accessible, a number of forms were used to gather and organize information. Such forms are even in greater use due in part to copiers and allow the users to extract specific information needed for the performance of further actions or tasks. One difficultly with such forms is the ability to covert the forms into a format that is usable by digital machines such as computers.
The prior art has attempted to solve this problem with optical character recognition, but it is prone to errors and is very computationally expensive. For most applications, where there are millions of documents, such a solution is not acceptable. Moreover, the prior art has not devised a method for determining the type of processing that should be undertaken for a given document. Thus, there is a need for a system that is able to scan a document and provide automatic processing of the scanned image.
Therefore, what is needed is a system and methods for encoding instructions and a form type into a document, and responsive to scanning of the document, decoding instructions in the document and executing the decoded instructions.
The present invention overcomes the deficiencies and limitations of the prior art by providing an evolutionary document system. In one embodiment, evolutionary document system comprises: a multi-function printer, a recognition module, an evolutionary document processing module, a list of document identifiers and corresponding actions, and an evolutionary document creation module. The multi-function printer includes the capabilities of a conventional multifunction printer including the ability to scan documents, copy documents and print documents. In addition, the MFP includes software and control routines for processing and creating evolutionary documents. The recognition module is operable on the MFP and allows the MFP to determine an evolutionary document identification number from an image scanned by the MFP. The evolutionary document processing module is capable of matching an evolutionary document identification number to one or more steps or action stored in the list of document identifiers and corresponding actions. Once the actions have been identified, the evolutionary document processing module executes the actions. The present invention also includes an evolutionary document creation module for creating an evolutionary document including an identification code. The evolutionary document creation module also creates the actions associated with the evolutionary document and an entry in the list of document identifiers and corresponding actions.
The present invention also includes a number of novel methods including: a method for creating an evolutionary document, a method for processing an evolutionary document, and a method for printing an evolutionary document.
The invention is illustrated by way of example, and not by way of limitation in the figures of the accompanying drawings in which like reference numerals are used to refer to similar elements.
System and methods for creating and processing evolutionary documents are described. In the following description, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of the invention. It will be apparent, however, to one skilled in the art that the invention can be practiced without these specific details. In other instances, structures and devices are shown in block diagram form in order to avoid obscuring the invention. For example, the present invention is described primarily with reference to a one-to-many generation of documents using the evolutionary document system. However, the present invention applies to any type of multi-function printer that has the ability to process evolutionary documents even if no documents are generated.
Reference in the specification to “one embodiment” or “an embodiment” means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the invention. The appearances of the phrase “in one embodiment” in various places in the specification are not necessarily all referring to the same embodiment.
Some portions of the detailed descriptions that follow are presented in terms of algorithms and symbolic representations of operations on data bits within a computer memory. These algorithmic descriptions and representations are the means used by those skilled in the data processing arts to most effectively convey the substance of their work to others skilled in the art. An algorithm is here, and generally, conceived to be a self-consistent sequence of steps leading to a desired result. The steps are those requiring physical manipulations of physical quantities. Usually, though not necessarily, these quantities take the form of electrical or magnetic signals capable of being stored, transferred, combined, compared, and otherwise manipulated. It has proven convenient at times, principally for reasons of common usage, to refer to these signals as bits, values, elements, symbols, characters, terms, numbers, or the like.
It should be borne in mind, however, that all of these and similar terms are to be associated with the appropriate physical quantities and are merely convenient labels applied to these quantities. Unless specifically stated otherwise as apparent from the following discussion, it is appreciated that throughout the description, discussions utilizing terms such as “processing” or “computing” or “calculating” or “determining” or “displaying” or the like, refer to the action and processes of a computer system, or similar electronic computing device, that manipulates and transforms data represented as physical (electronic) quantities within the computer system's registers and memories into other data similarly represented as physical quantities within the computer system memories or registers or other such information storage, transmission or display devices.
The present invention also relates to an apparatus for performing the operations herein. This apparatus may be specially constructed for the required purposes, or it may comprise a general-purpose computer selectively activated or reconfigured by a computer program stored in the computer. Such a computer program may be stored in a computer readable storage medium, such as, but is not limited to, any type of disk including floppy disks, optical disks, CD-ROMs, and magnetic-optical disks, read-only memories (ROMs), random access memories (RAMs), EPROMs, EEPROMs, magnetic or optical cards, or any type of media suitable for storing electronic instructions, each coupled to a computer system bus.
The algorithms and displays presented herein are not inherently related to any particular computer or other apparatus. Various general-purpose systems may be used with programs in accordance with the teachings herein, or it may prove convenient to construct more specialized apparatus to perform the required method steps. The required structure for a variety of these systems will appear from the description below. In addition, the present invention is not described with reference to any particular programming language. It will be appreciated that a variety of programming languages may be used to implement the teachings of the invention as described herein.
Moreover, the present invention claimed below is operating on or working in conjunction with an information system or network. For example, the invention can operate on a stand alone multifunction printer or a networked printer with functionality varying depending on the configuration. Thus, the present invention is capable of operating with any information system from those with minimal functionality to those providing all the functionality disclosed herein.
System Overview
Referring now to
The present invention is directed to a concept of evolutionary copying where users add something to a paper document 106, probably with handwriting, copy it, and get something different in return. A typical example is shown in
The document 106 in one embodiment includes a code 120. This code 120 is a machine-readable identification number that can be translated by the evolutionary multifunction printer 102 into instructions or algorithms that are applied to create ensuing generations of the document 106. Different documents 106, 108 may have the same code 120 or different codes 120, 122 depending on their stage of evolution or generation. For example, as shown in
While the documents 106, 108 will be described below as including codes for identification of the document 106, 108 and each document's associated transformations, it will be understood that in an alternate embodiment, the evolutionary multifunction printer 102 could include a pattern recognition module (not shown) for identifying which document or form has been input and what corresponding transformations should be applied to the input document.
The evolutionary multifunction printer 102 is described below in more detail with reference to
The storage 104 for transformation information is coupled by signal line 110 to (or included as part of) the evolutionary multifunction printer 102. The storage 104 includes one or more transformations for the scanned image. Each of the transformations is preferably associated with one or more documents or codes. More particularly, a particular document may have any number of transformations from zero to n associated with it. Similarly, each transformation may be used with one or more documents. Specific examples will be discussed in detail below.
Referring now to
With regard to the following description, like reference numerals are used to describe like parts. For ease of understanding and clarity, the second embodiment of the system 200 will be described in the context of a particular example, where a document is input, and the system 200 generates two output documents in addition to performing other functions. The first output document is a copy of the input document with certain portions redacted. The second document has a different form with areas of the input document copied to and merged with the form of the second document. Those skilled in the art will recognize that this is just one example of application of the present invention and that the invention can be applied to perform any number of steps and generate any number of documents having different formats and content as will be described in more detail below.
The input document 106 is similar to that described above with reference to
Referring now to
Referring now to
While the bar codes of the present invention have been shown in the figures as one-dimensional barcodes, those skilled in the art will recognize that in an alternate embodiment two-dimensional bar codes could be used. Because of two-dimensional bar codes have a greater information storing capacity; such bar codes can include a header field that identifies it as an evolutionary document bar code. Optionally, this header is registered with a central authority so that an evolutionary multifunction printer 102 can be sure that it's identified an authentic evolutionary document bar code. The bar codes are used to map the scanned image to the actions that should be applied to it. Because of the limited information capacity for one-dimensional bar codes, they will most likely only be capable of re-directing the system to an off-MFP site where the information about transforming the document image is stored. The bar code might also store only an identifier for the form and the evolutionary multifunction printer 102 could be provided with identification of the site that provides the transformation for that image. This information could be pre-stored or it could be entered on the user interface of the evolutionary multifunction printer 102. Alternatives for mapping a scanned document image onto the actions associated with it, besides bar codes, include normal forms recognition software that uses image characteristics to identify the document. The identifier for the document and the location could be printed on the form, in an Optical Character Recognition (OCR) friendly font, perhaps in a known location such as the lower left corner of every page.
In an alternate embodiment, Radio-Frequency IDentification (RFID) tags could be used instead of bar codes. They could be attached automatically when evolutionary documents are printed or they could be attached manually with stickers that are placed on a document. The presence of a tagged document nearby an evolutionary multifunction printer 102 could trigger actions associated with the tag, such as printing a coupon. An audio feedback could signal the successful reading of an RFID tag. Too many nearby tags (that overload the reader) could be indicated with a different tone.
The evolutionary multifunction printer 102 is described below in more detail with reference to
The first document database 202 and a second document database 204 are provided for storing different template or forms used by the system 200. The databases 202, 204, are also used to store data extracted from an input document, or the entire document itself. The databases 202, 204, are also used to store data added to an output document. The databases 202, 204 can also be used to track the lifecycle of a document or an instance of a document from the time a first version is input, until that document is destroyed. Particularly for security applications where each instance of a document generated needs to be tracked and accounted for, the database 202, 204 can by used by the system 200 to perform that function.
The document destruction device 210 such as a paper shredder is coupled by signal line 216 to the database 204. In an alternate embodiment, the document destruction device 210 could be coupled to the network 208 by signal line 214. The document destruction device 210 preferably includes a bar code scanner 212. The bar code scanner 212 searches for bar codes on every document it receives and when it finds a bar code, it reads the bar code and transmits its symbolic equivalent to the database 202, 204 together with an indication that the document was destroyed by a particular shredder at a specific time. In an exemplary embodiment, the bar code scanner 212 is a two-sided sensor to read codes as the document travels past a linear sensor. Alternately, a single-sided sensor that reads bar codes on the other side of a sheet could be used or a full page image could be accumulated and bar code recognition could be executed on it. The document destruction device 210 could also include a (possibly two-sided) contact image sensor, like those used in a fax machine, and a one sheet page image buffer, that could hold the sheet currently being shredded so that if the user mistakenly shredded a document, it could be re-printed. This mistake could be indicated by the bar code but it might not be recognized until after the document had been partially shredded. The buffer's contents are encrypted as the bits are inserted, perhaps using the operator's public key, or the public key of the system administrator, so that they remain confidential.
Evolutionary Multifunction Printer 102
Control unit 450 may comprise an arithmetic logic unit, a microprocessor, a general purpose computer, a personal digital assistant or some other information appliance equipped to provide electronic display signals to display device 410. In one embodiment, control unit 450 comprises a general purpose computer having a graphical user interface, which may be generated by, for example, a program written in Java running on top of an operating system like WINDOWS® or UNIX® based operating systems. In one embodiment, one or more application programs are executed by control unit 450 including, without limitation, word processing applications, electronic mail applications, financial applications, and web browser applications.
Still referring to
Processor 402 processes data signals and may comprise various computing architectures including a complex instruction set computer (CISC) architecture, a reduced instruction set computer (RISC) architecture, or an architecture implementing a combination of instruction sets. Although only a single processor is shown in
Main memory 404 stores instructions and/or data that may be executed by processor 402. The instructions and/or data may comprise code for performing any and/or all of the techniques described herein. Main memory 404 may be a dynamic random access memory (DRAM) device, a static random access memory (SRAM) device, or some other memory device known in the art. The memory 404 is described in more detail below with reference to
Data storage device 406 stores data and instructions for processor 402 and comprises one or more devices including a hard disk drive, a floppy disk drive, a CD-ROM device, a DVD-ROM device, a DVD-RAM device, a DVD-RW device, a flash memory device, or some other mass storage device known in the art.
System bus 408 represents a shared bus for communicating information and data throughout control unit 450. System bus 408 may represent one or more buses including an industry standard architecture (ISA) bus, a peripheral component interconnect (PCI) bus, a universal serial bus (USB), or some other bus known in the art to provide similar functionality. Additional components coupled to control unit 450 through system bus 408 include the display device 410, the keyboard 412, the cursor control device 414, the network controller 416 and the I/O device(s) 418.
Display device 410 represents any device equipped to display electronic images and data as described herein. Display device 410 may be, for example, a cathode ray tube (CRT), liquid crystal display (LCD), or any other similarly equipped display device, screen, or monitor. In one embodiment, display device 410 is equipped with a touch screen in which a touch-sensitive, transparent panel covers the screen of display device 410.
Keyboard 412 represents an alphanumeric input device coupled to control unit 450 to communicate information and command selections to processor 402. The Keyboard 412 can be a QWERTY keyboard, a key pad, or representations of such created on a touch screen.
Cursor control 414 represents a user input device equipped to communicate positional data as well as command selections to processor 402. Cursor control 414 may include a mouse, a trackball, a stylus, a pen, a touch screen, cursor direction keys, or other mechanisms to cause movement of a cursor.
Network controller 416 links control unit 450 to a network 208 that may include multiple processing systems. The network of processing systems may comprise a local area network (LAN), a wide area network (WAN) (e.g., the Internet), and/or any other interconnected data path across which multiple devices may communicate. The control unit 450 also has other conventional connections to other systems such as a network for distribution of files (media objects) using standard network protocols such as TCP/IP, http, https, and SMTP as will be understood to those skilled in the art.
One or more I/O devices 418 are coupled to the system bus 408. For example, the I/O device 418 includes an image scanner and document feeder for capturing an image of a document. The I/O device 418 also includes a printer for generating documents. The I/O device 418 may also include audio input/output device equipped to receive audio input via a microphone and transmit audio output via speakers. In one embodiment, audio device is a general purpose; audio add-in/expansion card designed for use within a general purpose computer system. Optionally, I/O audio device may contain one or more analog-to-digital or digital-to-analog converters, and/or one or more digital signal processors to facilitate audio processing.
It should be apparent to one skilled in the art that evolutionary multi-function printer 102 may include more or less components than those shown in
The operating system 502 is preferably one of a conventional type such as, WINDOWS®, SOLARIS® or LINUX® based operating systems. Although not shown, the memory unit 404 may also include one or more application programs including, without limitation, word processing applications, electronic mail applications, financial applications, and web browser applications.
The identification recognition module 504 is used to identify the bar code or document. In one embodiment, the identification recognition module 504 is software capable of processing an image, extracting the bar code, and scanning or reading the bar code to get and alpha numeric string representing the document. In another embodiment, the identification recognition module 504 is software for image pattern matching or forms recognition as has been discussed above.
The list of evolutionary document identification numbers and routines 506 is preferably a table storing document identification numbers that correspond to the documents, and one or more corresponding tasks or routines. Examples of such corresponding tasks or routines are described below with reference to
The evolutionary document processing module 508 is a set of defined routines for performing the processing associated with each document as prescribed in the list of evolutionary document identification numbers and routines 506. These routines are able to use the information from the list of evolutionary document identification numbers and routines 506 and work with the processor 402 to perform any number of actions such as: creating forms, redacting forms, storing image data in the database, updating the status of a document, removing data from the database, etc.
The evolutionary document creation module 510 is a module and routines for creating an evolutionary document. This process is described in more detail below with reference to
The image buffer 512 is used for temporary storage of a scanned image during manipulation by the evolutionary document processing module 508 in performing the task(s) specified by the list of evolutionary document identification numbers and routines 506. The image buffer 512 can also be used to store documents created by the evolutionary document processing module 508 before they are sent to the output device 418 for printing.
The user interface module 514 communicates with and is responsive to the evolutionary document processing module 508. The user interface module 514 generates information and commands that cause message to be displayed to the user via the display device 410. Several actions can be performed on an input document after it is scanned. Many depend on or require instructions or cooperation of a human operator. The user interface module 514 includes routines to cause prompts to be displayed on the display device 410 of the evolutionary multi-function printer 102. These prompts instruct the user to keep the document, file it in a particular location, or destroy it. These instructions can require confirmation such as by pressing a button of the keypad 412.
The document database 520 is used to store documents that have been processed and scanned. The document database 520 can also maintain one or more data structures to track an evolutionary document through its lifecycle from creation to destruction. The document database 520 can also be used to temporarily store documents before migration to other databases 202, 204 in the system 200, but outside of the evolutionary multi-function printer 102. Another application for the document database 520 is to track evolutionary documents through their lifecycle from creation to destruction. After a document is processed (all actions associated with the evolutionary document are completed), it can be “expired.” That is, the record for the document can be updated to show its bar code identifier is no longer valid. If the document is scanned again on evolutionary multi-function printer 102, it can trigger a response, which includes: 1) alert the current user by flashing a message on the console or sounding a alert that the input is no longer useful; 2) alert another user, such as a System Administrator, by sending an email message indicating that an invalid document was just scanned on a particular evolutionary multi-function printer 102; or trigger a feeder-marking device (see below) to apply an “EXPIRED” message to the document. The expiration process can be associated with networked evolutionary document shredders that expect to receive an expired document within some period of time. If they don't, the system 200 can trigger any of a variety of alerts that include sending email to administrators, etc. Users can be motivated to shred their expired documents by adding a small fee to their pay check, publicizing their shredding performance on a web site, or awarding points in a contest that recognizes people who shred their expired documents as soon as possible after they're scanned.
Evolutionary Document Processing
Referring now
As shown in
Next, in the user action stage, a printed version of the evolutionary document is manipulated by the user. The user may add notes and other handwritten or type written additions 606 to the evolutionary document. The user then walks up to the evolutionary multi-function printer 102, inserts the evolutionary document and selects 608 an option for evolutionary copying (as opposed to standard copying) on the keypad 412 of the evolutionary multi-function printer 102. The user may input one or more additional processing options for the evolutionary document. These options may be provided by the evolutionary multi-function printer 102, or may be responsive to the type of evolutionary document scanned and may need user input selections during the processing by the evolutionary multi-function printer 102.
Next, in the MFP processing stage, the evolutionary multi-function printer 102 scans 610 the document. The evolutionary multi-function printer 102 uses the scanned image to identify 612 the evolutionary document, and its state. As described above, this can be done by scanning the bar code or by performing form matching. Once the evolutionary document has been identified, a query can be performed on the database 520, 202, 204 to determine the documents state. The content of the form may also be used to determine state (e.g., patient intake form with the patient name visible). Using the evolutionary document identification number, the evolutionary multi-function printer 102 then retrieves 614 the actions (e.g., black out patient's name) associated with and to be applied to the evolutionary document. For example, these actions are retrieved from the list of evolutionary document identification number and routines 506 or the database 202, 204. The evolutionary multi-function printer 102 performs 616 the actions associated with the evolutionary document and prints any new documents. Then the evolutionary multi-function printer 102 presents 618 information about the evolutionary document to the user. For example, the evolutionary multi-function printer 102 can display messages on its user interface confirming the actions performed or messages about any follow-up action (e.g., destroy the original).
Referring now to
Evolutionary Document Creation
Referring now to
Another alternative to the stand-alone application or the plug-in module is to provide the functionality as part of the printer driver. This allows addition of the evolutionary document capabilities to any document, independent of the application that generated it. An example application is copy tracking. A Microsoft Word user (or equivalently the user of Netscape Communicator, Adobe Acrobat, Outlook, PowerPoint, FireFox, etc.), after opening the Print dialog box, could be presented with options that let them print an evolutionary document that automatically causes an evolutionary multi-function printer 102 to count the number of times the document is copied. An exemplary print dialog box is shown in
Document Lifecycle
In one alternate embodiment, the evolutionary multi-function printer 102 can also include a feeder-marking device. The feeder marking device is in communication with the processing module 508 and causes a mark to be applied to the original document as it passes through the document feeder of the evolutionary multi-function printer 102. When the user invokes the evolutionary copying process, part of the meta description for the task includes the disposition of the input document. This can include instructions to the feeder to apply a mark to the documents that pass through the feeder. The feeder-marking device can be as a simple as an inked wheel that's mechanically depressed onto the face of the documents. That wheel can include letters that spell messages such as “EXPIRED” that are applied repeatedly. Also, the position of the marking can be adjusted so that it obscures the bar code. The feeder-marking device can also be a set of normal inkjet printing heads placed at the end of the feeder's paper path. The message they print and the number and size of the messages can be adjusted based on cost and application considerations.
In another alternate embodiment, a camera on a cell phone or any other portable device could capture an evolutionary document. The cell phone could do bar code recognition and prompt the user for actions that need to be taken for that document. For example, “ensure that a 7-digit phone number is present in box 5.” After bar code recognition, the user is prompted to scan a specific field on the document. The cell phone could capture the image of that field and send it, via an email message, to the database associated with that document. For example, the handwritten description of a patient's diagnosis could be captured by a doctor sitting at his desk (or sitting at a table in a remote location) obviating the need for a separate trip to an evolutionary multi-function printer 102. In return, the doctor would receive a validation code that he could hand-print on the form that would verify successful reception of the scanned image by the database. This code would also be stored on the cell phone with the original scanned image. The next generation of the evolutionary document could be sent to a printer nearby the user, rather than the same evolutionary multi-function printer 102 that scanned the document or it could send it to a fax machine. An electronic representation of the evolutionary document could be returned to the user's cell phone and he could decide where to print it. In another instance he might send the document to a nearby fax machine.
In yet another alternate embodiment, existing documents, originally intended for some other purpose, are used as first generation evolutionary documents. For example, a user could scan their driver's license and the system 200 could print discount coupons. The coupons might include the user's name and address from the license. The coupons could also be generated based on the user's buying history. For example, because other residents of the same address purchased Ivory soap last month, the system 200 could print an Ivory soap coupon because it anticipates that the user needs some more soap. Of course, it could substitute coupons or competing products that the store owner would like to promote. The bar code on the coupons could include the user's identifying information and when the user purchases the indicated product using that coupon, the system 200 would recognize the bar code and generate another coupon for a product that it thinks the user might need. Another version could create a copy of the driver's license with confidential information redacted, such as the user's home address. This copy would be sufficient for certifying that the user's identity and date of birth had been verified, but would guarantee that their residence could not be located.
The foregoing description of the embodiments of the present invention has been presented for the purposes of illustration and description. It is not intended to be exhaustive or to limit the present invention to the precise form disclosed. Many modifications and variations are possible in light of the above teaching. It is intended that the scope of the present invention be limited not by this detailed description, but rather by the claims of this application. As will be understood by those familiar with the art, the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. Likewise, the particular naming and division of the modules, routines, features, attributes, methodologies and other aspects are not mandatory or significant, and the mechanisms that implement the present invention or its features may have different names, divisions and/or formats. Furthermore, as will be apparent to one of ordinary skill in the relevant art, the modules, routines, features, attributes, methodologies and other aspects of the present invention can be implemented as software, hardware, firmware or any combination of the three. Of course, wherever a component, an example of which is a module, of the present invention is implemented as software, the component can be implemented as a standalone program, as part of a larger program, as a plurality of separate programs, as a statically or dynamically linked library, as a kernel loadable module, as a device driver, and/or in every and any other way known now or in the future to those of ordinary skill in the art of computer programming. Additionally, the present invention is in no way limited to implementation in any specific programming language, or for any specific operating system or environment. Accordingly, the disclosure of the present invention is intended to be illustrative, but not limiting, of the scope of the present invention, which is set forth in the following claims.
This application claims the benefit of U.S. Provisional Application No. 60/653,422, filed Feb. 15, 2005, entitled “EVOLUTIONARY DOCUMENTS: INTEGRATION OF PAPER-BASED AND ELECTRONIC DOCUMENT PROCESSING”, by Max E. McFarland, Michael G. E. Griffin, Jonathan J. Hull, and Kurt Wesley Piersol which is incorporated by reference in its entirety.
| Number | Name | Date | Kind |
|---|---|---|---|
| 5991469 | Johnson et al. | Nov 1999 | A |
| 6025200 | Kaish et al. | Feb 2000 | A |
| 6088700 | Larsen et al. | Jul 2000 | A |
| 6144975 | Harris et al. | Nov 2000 | A |
| 6411972 | Parikh et al. | Jun 2002 | B1 |
| 6585154 | Ostrover et al. | Jul 2003 | B1 |
| 6651217 | Kennedy et al. | Nov 2003 | B1 |
| 6816630 | Werth et al. | Nov 2004 | B1 |
| 6886136 | Zlotnick et al. | Apr 2005 | B1 |
| 7246748 | Feuerman et al. | Jul 2007 | B1 |
| 7296221 | Treibach-Heck et al. | Nov 2007 | B1 |
| 20020141660 | Bellavita et al. | Oct 2002 | A1 |
| 20020170973 | Teraura | Nov 2002 | A1 |
| 20030025951 | Pollard et al. | Feb 2003 | A1 |
| 20030106018 | Silverbrook et al. | Jun 2003 | A1 |
| 20040039988 | Lee et al. | Feb 2004 | A1 |
| 20040068693 | Rawat et al. | Apr 2004 | A1 |
| 20040078337 | King et al. | Apr 2004 | A1 |
| 20040181749 | Chellapilla et al. | Sep 2004 | A1 |
| 20050002053 | Meador et al. | Jan 2005 | A1 |
| 20050038756 | Nagel | Feb 2005 | A1 |
| 20050163361 | Jones et al. | Jul 2005 | A1 |
| 20050289182 | Pandian et al. | Dec 2005 | A1 |
| 20060047639 | King et al. | Mar 2006 | A1 |
| 20060242567 | Rowson et al. | Oct 2006 | A1 |
| Number | Date | Country |
|---|---|---|
| 1014254 | Jun 2000 | EP |
| 04-135885 | May 1992 | JP |
| 11272654 | Oct 1999 | JP |
| 2001-034692 | Feb 2001 | JP |
| 2002-120475 | Apr 2002 | JP |
| 2002-245075 | Aug 2002 | JP |
| 2003-0150585 | May 2003 | JP |
| 2004348619 | Dec 2004 | JP |
| WO 03071850 | Sep 2003 | WO |
| Number | Date | Country | |
|---|---|---|---|
| 20060184522 A1 | Aug 2006 | US |
| Number | Date | Country | |
|---|---|---|---|
| 60653422 | Feb 2005 | US |
