# Patent

## Title
Web content customization via adaptation Web services

## Abstract

A user agent in a Web access device transmits an HTTP request for Web content to an origin server. The request contains a set of capabilities of the Web access device. A content authoring mechanism and adaptation determination service on the origin server process the request to determine what transformation is required to make the requested content fit the capabilities of the Web access device. The adaptation determination service invokes a niche transformation service that performs, in response to the content and the capabilities, the necessary transformation. The transformed Web content is transmitted to the user agent.

## Background
BACKGROUND OF THE INVENTION
I. Field of the Invention
The present invention relates generally to the Internet. Particularly, the present invention relates to specialized Web transformation services.
II. Description of the Related Art
As the number of devices accessing the World Wide Web (referred to herein as “Web”) proliferates, Web content and applications need to be tailored to suit the characteristics of each device. These devices can include personal digital assistants, wireless communication devices, desktop or laptop computers, or any combination of these items. Typically these devices include a user agent that is responsible for interfacing between the device user and the Internet.
Current Web implementations typically involve developing, updating, and maintaining a specialized set of variants of Web content and its associated presentations—one for each possible device type. The content provider typically must also develop and maintain suitable transformation processors that can transform generic content (e.g., device independent) from one form to another.
Existing and emerging Web technologies support these capabilities through client side, server side, or intermediary based architectures. The latter of these involve conveying, to the server or intermediate proxy, requirements regarding the capabilities of the rendering environment along with the Web request that was made by the user. The requirements are interpreted and the content appropriate to the requesting device is selected or generated.
The final presentation is affected by a number of factors. The ability of the content provider to understand and interpret the various device characteristics and be able to tailor the content suitably is one such factor. Additionally, the final presentation is affected by the user's level of trust by various content providers, transcoding proxies, or other stakeholders regarding the use of the capabilities requirements made along with the request. The extent of trust on the part of content providers regarding the potential manipulation/transformation by intermediate proxies that is likely to occur on the return path of the response also affects the final presentation.
There are several disadvantages to the above factors. For example even if the intermediate proxies were able to provide transcoding services, it may not always be possible for the user to obtain the most suitable transformation from a specific proxy along its path. Additionally, the user may not have control over who is receiving, storing, or interpreting any part of the user's request or response. Security mechanisms, such as encryption of the request and content, may impact performance. Without trust and relationships in place, privacy mechanisms such as P3P would be difficult to implement along a proxy chain that involves transcoding. There is a resulting need to be able to customize Web content reliably while providing a secure path for the content.



BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 shows a block diagram of one embodiment of a computer server of the present invention.
FIG. 2 shows a block diagram of one embodiment of a Web access device of the present invention.
FIG. 3 shows a block diagram of one embodiment of a Web content customization system of the present invention.
FIG. 4 shows a flowchart of one embodiment of a customization method of the present invention.



DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT
The system and method of the present invention provides Web content customization by a specialized or niche Web computer server. The content adaptation function and the adaptation determination function are implemented as Web Services that are invoked by the web application server.
The Web content customization/transformation method of the present invention may be referred to using different terms of art. For example, the transformation may be referred to in the art as transcoding, adaptation, customization, or repurposing. All of these processes are substantially similar and are encompassed by the present invention.
FIG. 1 illustrates a block diagram of one embodiment of a computer server of the present invention. The computer server is comprised of a processor (100) that controls the operation of the computer server. An example of such a processor is a POWERPC or PENTIUM processor. The origin server is conceptually a single server. In fact, it may be physically comprised of different processes (i.e., web server, application server, database server).
Memory (105) is coupled to the processor (100). The memory (105) is used by the processor to store data for display (e.g., video RAM), data that are being operated on by the processor (100), and processes to be executed. This memory (105) can include semiconductor memory such as random access memory (RAM), read only memory (ROM), or FLASH RAM. The memory (105) may also include other types of memory beyond semiconductor memory.
Storage media (110) is used by the processor (100) to store data for longer-term storage than that provided by the memory (105). Examples of storage media (110) can include floppy disk drives, optical disk drives, hard drives, or any other type of storage media. The storage media (110) can be removable or fixed in the computer.
The processor (100) uses a display (115) or monitor to display information to the computer user. The display (115) may be a liquid crystal display (LCD), a cathode ray tube (CRT), or any other type of display.
The computer user can use a keyboard (120) to enter data to be used by the processor (100) in generating desired information. In one embodiment, the keyboard (120) is a standard QWERTY-style keyboard with a mouse or trackball.
The computer server also uses input/output (I/O) ports (125) in order to communicate data outside of the computer. These I/O ports (125) can include Universal Serial Bus (USB) ports, IEEE 1394 (FIREWIRE) ports, parallel ports, serial ports, or any other type of I/O output.
The computer server of FIG. 1 is for illustration purposes only. The present invention is not limited to any one type of computer server. Any computer server capable of running the instructions required to accomplish the various embodiments of the present invention is encompassed by the present invention.
FIG. 2 illustrates a block diagram of a typical Web accessing device (200) of the present invention. In this embodiment, the device is a wireless communication device (e.g., mobile radiotelephone) having Internet access capabilities using an access standard such as Wireless Access Protocol (WAP).
The device (200) is comprised of a microphone (205) for converting a voice signal to an electrical signal for transmission by the transmitter (203) and radiated over the antenna (209). Signals received by the antenna (209) are received and demodulated by the receiver (204) before being converted to an aural signal by the speaker (208).
The transmitter (203) and receiver (204) blocks represent the circuitry required for analog-to-digital conversion, digital-to-analog conversion, modulating, demodulating, and any other task required by the air interface standard (e.g., CDMA, TDMA, GSM) for which the wireless device is designed. The present invention is not limited to any one air interface standard.
The device user inputs information and operates the device by the keypad (207). The keypad (207) can be used to input dual-tone multi-frequency (DTMF) responses. The display (206) shows the user what was input on the keypad (207) as well as information that was received by the receiver (204), such as Web content.
A processor (202) that is coupled to the memory (101) controls the wireless device (200). The processor scans the keypad (207) for inputs, displays appropriate data on the display (206), and controls the transmission and reception of data.
The processor (202) is also responsible for performing any processes used by the device. In the preferred embodiment, the processor runs a Web browser-type process, referred to as the user agent, that communicates data over the Internet. The Web user agent is responsible for interacting with the World Wide Web and Internet such as sending and retrieving e-mails, requesting, accessing, and rendering Web content, and sending information to a Web site.
The user agent is a smaller version of the Web browser programs written for personal computers. These include programs such as MICROSOFT INTERNET EXPLORER and NETSCAPE NAVIGATOR. The user agent for the access device is required to be smaller in size in order to fit in the memory of the device. The user agent must also download and render Web content equivalents for a substantially smaller screen on the device than that used in a typical personal computer. The user agent is well known in the art and is not discussed further herein.
While the Web access device of FIG. 2 is described as a wireless device (200), other types of Web access devices also operate effectively with the process of the present invention. Alternate embodiments include personal digital assistants (PDA), desktop computers, laptop computers, web TVs, web tablets, and telephones (wireline or wireless). In one such embodiment, the wireless communication device is WAP-enabled.
FIG. 3 illustrates a block diagram of one embodiment of the Web content customization system of the present invention. The various components of the system communicate using areas Internet communication protocols such as HyperText Transfer Protocol (HTTP), Simple Object Access Protocol (SOAP), eXtensible Markup Language (XML), and Hypertext Markup Language (HTML). The present invention is not limited to these languages protocols. Alternate embodiments may use other languages and protocols to accomplish substantially similar results.
The above-mentioned Internet communication protocols and languages are well known in the art and are not discussed further in detail. Information regarding these protocols can be found on the Internet. For example, SOAP can be found at http://www.w3.org/TR/soap12-part1.
The Web content of the present invention may be comprised of any data objects retrievable over the Internet. Such data can include Web pages [in part or whole], images, text and any other type of data that can be transmitted over the Internet.
Referring to FIG. 3, the system is comprised of a user agent (301), a Web site (e.g., origin computer server) (305), and a niche transformation service (310). The origin computer server (305) is further comprised of a content authoring application (306) and an adaptation determination service (307).
As described above, the user agent (301) is resident in the Web access device. The user agent (301) is responsible for initiating an HTTP request for Web content to a Web site. The user agent also communicates delivery context information to the Web site.
The delivery context is comprised of information about the physical, network, software capabilities of the Web access device, and any associated execution environment. The physical capabilities may include the size of the Web access device's display, the amount of memory in the device, or the means for inputting data. The network capabilities may include whether the Web access device has Ethernet or wireless capabilities. The software capabilities may include the software language interpreters/compilers that are resident in the device. The associated execution environment may include the whether the device is running JAVA and what operating system (e.g., WINDOWS, MACINTOSH). The delivery context is additionally comprised of user preferences regarding the capabilities of the Web access device. Alternate embodiments have different or additional delivery context definitions.
The origin computer server (305), is responsible for authoring and hosting software applications or Web content that is to be transmitted to and rendered by the user agent. Upon receiving a request for content from the user agent, the content authoring application (306) invokes Web services to determine how the content is to be customized based on characteristics of the content and the delivery context. The content authoring application (306) is also responsible for responding to the user agent's HTTP request with the customized content.
The adaptation determination service (307), resident on the origin computer server (305), interprets the delivery context and maps it to the characteristics of the content. For example, the delivery context may indicate that the access device comprises a 240×240 screen with 4-bit color. The adaptation determination service (307) matches this characteristic up with the images in the content that has been requested by the user agent.
The adaptation determination service (307) uses the results of the mapping operation to determine the type of transformation or transformations that are required. The adaptation determination service (307) then invokes the appropriate Web Service or services that have the ability to perform the specific type of transformations required. For example, if a Web content image is required to be customized to fit the screen of the access device, the adaptation determination service (307) invokes a Web Service that specializes in performing this transformation. The Web Service is also referred to herein as the niche transformation service (310).
When the adaptation determination service (307) transmits the content to be customized to the appropriate niche transformation service (310), suitable portions of the delivery context are also transferred. This gives the transformation service the required information on how to customize the content for rendering on the Web access device.
In one embodiment, the adaptation determination service (307) embeds the Web Services and their location on the Internet in a Web Services Proxy. In another embodiment, the adaptation determination service (307) stores a table of Web Services and their location on the Internet. In this embodiment, the location is a universal resource locator (URL) indicating where each of those specific transformation services can best be performed. In another embodiment, the table contains a back-up URL for each transformation service in case the primary location is down or missing.
While the embodiment described in FIG. 3 includes the content authoring (306) and adaptation determination service (307) on the origin server (305), alternate embodiments may include these processes at other locations. For example, in one embodiment, the content authoring and adaptation determination service are located on different computer servers.
The niche transformation service (310) of FIG. 3 interprets the delivery context transmitted by the adaptation determination service along with the Web object (or resource) that is to be customized. The niche transformation service (310) then carries out the customization required in order to make the content fit the delivery context requirements.
In performing this transformation or customization, the niche transformation service (310) may be required to invoke a child Web Service (i.e., a sub-niche transformation service) in order to adequately perform the transformation. In doing so, the niche transformation service may itself contain a niche adaptation determination service and may also communicate suitable subsets of the delivery context or generic versions thereof to the sub-niche transformation service. The invoked niche transformation service may not have the required ability to perform a specific customization or transformation sub-task. In this case, the niche transformation service can invoke another niche transformation service as the child Web Service in order to perform that sub-task.
For example, the parent niche transformation service may be required to customize the content such that images are reduced to 240×200 and all hyper-links are removed. In this example, the parent service does not have the ability to reduce the images and, therefore, invokes the child niche transformation service to perform this image reduction. After the image reduction, the customized image content is transmitted back to the parent niche transformation service for integration with the remaining content.
For purposes of clarity, the system of FIG. 3 illustrates only a single niche transformation service. Alternate embodiments may include any number of niche transformation services as required by the content to be customized. In other words, there may be one niche transformation service for scaling an image in the Web content while a second niche transformation service may be used to format text.
In one embodiment, the transformed version of the Web content may be cached by the invoker to prevent degradation of performance. In such an embodiment, there may be a pre-configured infrastructure wherein any privacy arrangements are worked out apriori with the user and among all participants on the infrastructure.
FIG. 4 illustrates a flowchart of one embodiment of the customization method of the present invention. The process begins with the user agent requesting Web content from the origin computer server (step 401). In one embodiment, this request is in the form of a GET or POST method over HTTP and includes the delivery context, as defined above. For example, the request may appear as: HTTP GET<delivery context>, where the “delivery context” is replaced by the actual characteristics of the requesting Web access device using HTTP headers or alternate mechanisms. Alternate embodiments use other types of instructions to generate this request.
The content authoring process at the origin server receives the content request. The content authoring process then transmits a request for customization to the adaptation determination service (step 405). In one embodiment, this request is in the form of an XML message over SOAP-compliant protocols such as CUSTOMIZE<delivery context, content>. This provides the adaptation determination service with both the delivery context information from the user agent and the content to be customized along with the instruction to customize. Alternate embodiments use other types of instructions to generate this request.
The content may be passed to the adaptation determination service in many different methods. One embodiment passes the actual content to the adaptation determination service. Another embodiment transmits a location of the content where the location may be a URL or some other network address or locator. The present invention is not limited to transmitting the actual content among any of the blocks of the customization system.
The adaptation determination service transmits a request to the niche transformation service to customize the content (step 410). In one embodiment, this request is in the form of an XML message over SOAP-compliant protocols such as: TRANSFORMREQUEST<delivery_context′, contentObj′>. Alternate embodiments use other types of instructions to generate this request.
Included in the request from the adaptation determination service are the elements delivery_context′ and contentObj′. The delivery_context′ element is a subset of attributes of the set of delivery context information from the user agent. The adaptation determination service makes a determination regarding which subset of attributes to convey to the niche transformation service. Since there may be a plurality of niche transformation services by the adaptation determination service, each niche transformation service may get a different delivery_context′ element.
Web content is typically comprised of multiple resources or objects that are referred to as contentObj. One of these resources or objects is the contentObj element of the TRANSFORMREQUEST instruction. The contentObj′ element is to be transformed into another form based on the delivery_context′ attributes. This transformed or customized content is subsequently referred to as TxContentObj.
The process of FIG. 4 continues with the customized content (e.g., TxContentObj) from the niche transformation service or services being transmitted back to the adaptation determination service (step 415) using SOAP-compliant protocols. The adaptation determination service forwards the customized content to the content authoring block (step 420) using SOAP-compliant protocols. The customized content is subsequently referred to as AdaptedContent.
The response agent's request is transmitted to the user agent from the origin computer server (step 425). The format of this response, in one embodiment, over HTTP with a response command. For example, this response may take the form of: response<AdaptedContent>.
The Web content customization system and methods of the present invention provides greater privacy protection of the user's data communication prior art methods. This is accomplished by maintaining users personally identifiable information (e.g., email address or IP address) only at the origin Web computer server. No personal identifiable information is shared with the adaptation services or Web Service providers. Thus, personally identifiable information shared by the user by means of either a transaction (e.g., online banking or e-commerce) or resulting from communication of delivery context information is not communicated with a third party Web Service.
Additionally, any personally identifiable information that is necessary to be shared with third parties is disclosed in the origin computer server's privacy policy. Thus the user is fully aware of what data is being shared with whom and for what purpose. At this point, the user is empowered to opt-out of any interaction with the origin computer server.
The Web content customization methods of the present invention encompasses many different types of transformation. The following types of transformation are for illustration purposes only and do not limit the present invention in any way.
In one embodiment, a parameterized template (e.g., content, contentObj′) that contains no user specific information is sent to the niche transformation service. This template is adapted by the niche transformation service based on delivery context information sent by the origin computer server. The transformed template (e.g., TxContentObj, AdaptedContent′) is returned to the origin computer server. The server then populations the appropriate user specific information to generate the final response to the user agent.
In another embodiment, the user specific information is sent along with the template and the final transformation (e.g., AdaptedContent) is obtained by the origin computer server. The AdaptedContent is then passed along to the user agent.
In yet another embodiment, contentObj′ may take the form of a MIME type that is transformed into another MIME type by the niche transformation service. For example, the niche transformation service may perform an HTML to Wireless Mark-up Language (WML) conversion or a “gif” to “jpeg” conversion of an image.
In still another embodiment, the contentObj′ and TxContentObj can both be of the same MIME type. The niche transformation service transforms one form of MIME to another form of the same MIME type. For example, a color “gif” image may be transformed into a black and white “gif” image.
In summary, the Web content customization system and methods of the present invention provide an architecture wherein the content adaptation function in the adaptation determination function are implemented as Web Services that are invoked by a web application server. One or more specialized Web Services, also known as niche transformation services, can be used to customize requested Web content to fit a particular Web access device area. These services are provided while maintaining a user's personally identifiable information as private.
Numerous modifications and variations of the present invention are possible in light of the above teachings. It is therefore to be understood that within the scope of the appended claims, the invention may be practiced otherwise than as specifically described herein.

## Claims

1. A method for customization of Web content via adaptation Web Services, the method comprising:
receiving a request for Web content from a Web access device, the request for Web content comprising a plurality of capabilities of the Web access device, the capabilities of the Web access device comprising physical capabilities, network capabilities, and software capabilities;
generating the Web content in response to the Web content request;
determining customization requirement of the Web content in response to the Web content and the capabilities of the Web access device;
transmitting an indication of the Web content with the capabilities to a niche transformation service that has been chosen in response to the determination of the customization required;
receiving an indication of a modified version of the Web content from the niche transformation service, the modified version generated in response to the Web content and the capabilities; and
transmitting the modified version of the Web content to the Web access device.

2. The method of claim 1 wherein the indication of the Web content and the indication of the modified Web content comprise the Web content.

3. The method of claim 1 wherein the indication of the Web content and the indication of the modified Web content comprise a universal resource locator of the Web content.

4. The method of claim 1 and further including:
receiving capabilities of the Web access device with the request for Web content;
transmitting the capabilities of the Web access device to the niche transformation service with the indication of the Web content; and
receiving the indication of the modified Web content that has been modified in response to the Web content and the capabilities of the Web access device.

5. The method of claim 1 wherein the request for Web content comprises a HyperText Transfer Protocol request.

6. The method of claim 1 wherein the step of transmitting the indication of the Web content to the niche transformation service comprises a Simple Object Access Protocol-compliant instruction.

7. The method of claim 1 wherein the request for the Web content is received from the Web access device over a wireless link.

8. The method of claim 1 and further including transmitting personally identifiable information regarding a user of the Web access device to the Web Services.

9. The method of claim 1 and further including:
maintaining, only on a computer server, personally identifiable information regarding a user of the Web access device.

10. In a computer server, a method for customization of Web content via adaptation Web Services, the method comprising:
receiving a request for Web content from a user agent resident in a Web access device, the request for Web content comprising capabilities of the Web access device, the capabilities of the Web access device comprising software capabilities, network capabilities, and physical capabilities of the Web access device, and associated execution environment;
invoking a Web Service, in response to the request for Web content and the capabilities of the Web access device, to determine how the requested Web content is to be customized;
mapping the capabilities of the Web access device to characteristics of the requested Web content;
invoking a niche transformation service in response to the mapping of the capabilities of the Web access device;
receiving an indication of modified Web content from the niche transformation service, the modified Web content being modified in response to the capabilities of the Web access device; and
transmitting modified Web content to the user agent.

11. The method of claim 10 wherein the request for Web content comprises a Hypertext Transfer Protocol request and the step of transmitting the modified Web content comprises a Hypertext Transfer Protocol transmission.

12. The method of claim 10 wherein the step of receiving the indication of the modified Web content comprises a Simple Object Access Protocol-compliant instruction.

13. The method of claim 10 and further including:
transmitting personally identifiable information regarding a user of the Web access device to the Web Services.

14. The method of claim 10 and further including the step of
maintaining, only on the computer server, personally identifiable information regarding a user of the Web access device.

15. A system for customizing Web content comprising: an origin server comprising:
Web content authoring means having a capability to determine how Web content is to be customized in response to a received Web content request from a Web access device, the Web content request comprising a plurality of characteristics of the Web access device, the capabilities of the Web access device comprising physical capabilities, network capabilities, and software capabilities; and
an adaptation determination service, coupled to the Web content authoring means, having a capability to interpret the characteristics of the Web access device, map the characteristics to the requested content, and make a determination regarding a type of transformation required in response to the characteristics and the content; and
a niche transformation service that has a capability of performing the type of transformation determined by the adaptation determination service, the niche transformation service generating modified Web content in response to the type of transformation and transmitting the modified Web content to the origin server.

16. The system of claim 15 and further including
a user agent, resident in the Web access device, having a capability for initiating, to the origin server, a hypertext transfer protocol request for Web content.

17. The system of claim 15 and further including
a plurality of niche transformation services coupled to the origin server, each niche transformation service having a particular transformation capability different from the other niche transformation services of the plurality of niche transformation services.

18. The system of claim 15 wherein communication between the Web content authoring means and the adaptation determination service is by simple object access protocol-compliant instructions.

19. The system of claim 15 wherein communication between the origin server and the niche transformation service is by simple object access protocol-compliant instructions.

20. The system of claim 15 wherein a user's personally identifiable information is stored only on the origin server.

21. The system of claim 15 wherein the Web access device is a wireless communication device and communication between the Web access device and the origin server is over a wireless link.

22. The system of claim 15 wherein the niche transformation service further comprises a capability of invoking a sub-niche transformation service that performs a transformation required by the niche transformation service.