Patent Application
20050149576
1. Field of the Invention
Systems and methods for direct navigation to and/or highlighting a specific portion of a target document such as query-relevant portion of the document are disclosed.
2. Description of Related Art
When a user searches for information on the Internet by submitting a query to a search engine, the search engine returns a results page that often provides several hyperlinks to web pages that may be relevant to the user's query. Under each hyperlink, the results page typically also provides query-relevant information or text, often referred to as “snippets,” extracted from the webpage to which the corresponding hyperlink refers.
When the user clicks on a desired hyperlink on the search results page, the client browser typically navigates to the top of the target or destination webpage (or other document such as a Word, Excel or Portable Document Format (PDF) document, for example) to which the hyperlink refers. However, the target webpage may be long and/or the search query terms may be buried deep within the webpage. To locate the desired search terms, the user may perform a search for the desired text from within the web browser and/or manually (visually) search for the relevant information by scrolling through the webpage.
As an example, to find pizza places in or near zip code 94043, the user may search for “pizza” at zip code 94043 using Google's “Searching by Location” search engine currently located at http://labs.google.com/location (i.e., http://labs.google.com/location?q=pizza&geo_near=94043&Search=Google+Search) as shown in
If the user clicks on the first-listed hyperlink 20, the client browser loads and displays the destination webpage 22 to which the hyperlink 20 refers at the top of the webpage 22, as shown in
In order for the user to determine which of the listings is the most query-relevant listing, the user can determine as the user scrolls scroll through the 35 listings on the destination webpage 22 which of the listings is the one that is most relevant to the user's query, i.e., in or closest to zip code 94043. In the current example, the user must scroll down a number of screens before the query-relevant listing 24 is even displayed within the browser, as shown in
As is evident, each result on the search results page generated by the search engine only points to a webpage and not to anything more granular. In other words, the snippet generated by the search engine is only displayed to the user on the search results page and is not propagated or otherwise utilized to directly navigate to the desired location on the destination webpage.
Systems and methods for direct navigation to and/or highlighting a specific portion of a target document such as query-relevant portion of the document are disclosed. It should be appreciated that the present invention can be implemented in numerous ways, including as a process, an apparatus, a system, a device, a method, or a computer readable medium such as a computer readable storage medium or a computer network wherein program instructions are sent over optical or electronic communication lines. Several inventive embodiments of the present invention are described below.
In one embodiment, the method may include generating a search result associated with a locator or link, e.g., a Universal Resource Identifier (URI) or a Uniform Resource Locator (URL), to a search result document in response to a search query from a client device, generating an instruction corresponding to the search result, the instruction being to a document browser on the client device to navigate directly to an intra-document portion related to the query within the search result document when the search result is selected by a user, and providing the search result to the user. The search result may include a snippet extracted from the search result document such that the instruction causes navigation directly to at least a portion of the snippet in the search result document or to a portion that the sever or search engine determined to be similar or otherwise relevant. The instruction may be an intra-document link, i.e., a link to a specific portion within the document, containing an artificial anchor that is undefined in the search result document, e.g., one designated by a preassigned artificial anchor designator. Alternatively, the instruction may be an intra-document link containing a named anchor defined in the search result document. As yet another alternative, the instruction may be a hidden tag or an attribute on a tag in a search result page. The intra-document portion may be text and/or image within the search result document, a tag identification, a tag name, a tag location in the document object model, an HTML byte offset defined in the document, and/or a general offset or location definition within the document.
In yet another embodiment, a method for linking to an intra-document portion of a target document generally includes generating an artificial intra-document anchor, i.e., an anchor that is undefined in the search result document, corresponding to the intra-document portion within the target document. The artificial anchor may be appended to a link pointing to the target document.
In yet a further embodiment, a method for navigating directly to an intra-document portion within a target document generally includes receiving a document link to the target document and executing an instruction to navigate directly to and optionally highlighting the intra-document portion within the target document in response to the document link being selected, the instruction being one of a reference to an artificial anchor appended to the document link, the artificial anchor being undefined in the target document, a hidden tag defined in the target document, and an attribute on a tag defined in the target document.
In yet another embodiment, a method generally includes receiving a search result page including a search result link pointing to a search result document and a snippet extracted from an intra-document portion within the search result document, generating an intra-document link based on the snippet by appending an artificial anchor to the search result link, the intra-document link pointing to the intra-document portion within the search result document and the artificial anchor being undefined in the target document, and navigating directly to the intra-document portion within the target document in response to selection of the intra-document link.
In yet a further embodiment, a computer program product embodied on a computer-readable medium, the computer program product including instructions, which when executed by a computer system, are operable to cause the computer system to perform acts generally including generating at least one search result in response to receiving a search query from a user, the search result being associated with a search result document link to a search result document, generating an instruction corresponding to the search result, the instruction being to a document browser to display the search result on the client device, the instruction being to navigate directly to the intra-document portion within the search result document when the search result is selected by the user, the intra-document portion being related to the search query, and providing the search result to the user.
These and other features and advantages of the present invention will be presented in more detail in the following detailed description and the accompanying figures which illustrate by way of example the principles of the invention.
The present invention will be readily understood by the following detailed description in conjunction with the accompanying drawings, wherein like reference numerals designate like structural elements.
Systems and methods for direct navigation to and/or highlighting a specific portion of a target document such as query-relevant portion of the document are disclosed. The following description is presented to enable any person skilled in the art to make and use the invention. Descriptions of specific embodiments and applications are provided only as examples and various modifications will be readily apparent to those skilled in the art. The general principles defined herein may be applied to other embodiments and applications without departing from the spirit and scope of the invention. Thus, the present invention is to be accorded the widest scope encompassing numerous alternatives, modifications and equivalents consistent with the principles and features disclosed herein. For purpose of clarity, details relating to technical material that is known in the technical fields related to the invention have not been described in detail so as not to unnecessarily obscure the present invention.
As discussed above,
Conventional named anchors are added by webpage authors to allow users to navigate directly to a specific part or location within the webpage. For example, the webpage author may create a named anchor with <A NAME=location>Location</A> at the specific part of the webpage to which the reader can navigate directly from another part of the same webpage or from a different webpage. The NAME attribute names a section, e.g., text or image, so that other links can reference it via a clickable HREF link containing a pound sign “#” followed by the anchor name. In particular, the same or different webpage may include a clickable HREF link: <A href=“[URL]#location”> Jump to Location</A>, where [URL] is the URL of the target webpage. The HREF attribute specifies the URL address to which the browser is to navigate when the user clicks on the HREF link, i.e., “Jump to Location.” Note that using the HREF link containing an anchor name requires that the author of the webpage to have created the named anchor. If a named anchor does not exist for the specific part of the webpage, then the HREF link cannot be used to allow the reader to navigate directly to that specific part of the webpage. If an HREF link refers to a non-existent anchor, the browser simply navigates to the top of the target webpage.
With systems and methods described herein, mechanisms are provided to generate or simulate links with artificial named anchors and to allow the browser to recognize the artificial named anchor and navigate directly to the desired specific part of the target webpage even when the author of the webpage has not created a named anchor at the specific part of the webpage. In particular, the systems and methods described herein simulate the general functionality of the named anchor and the HREF link to provide links containing artificial named anchors that allow navigation directly to a specific part of the target webpage even when a named anchor does not exist at the specific part of the target webpage. Such links can be utilized by any webpage to provide a link to a specific part of another target webpage. In particular, such links containing artificial named anchors can be particularly useful for search result pages returned by search engines.
The systems and methods described herein may be utilized to navigate any document that may be provided from any suitable source as the Internet, an intranet, or local memory, for example. The term URL as used herein generally refers to a locator or address for any document, not necessarily only those available on the Internet. Suitable target or destination documents are typically those displayable by a client browser, typically a client web browser, such as an Internet Explorer, Netscape, Opera, or Mozilla browser.
Referring again to the example described above with reference to
To further draw the user's attention to the query-relevant listing 24 in the target webpage 22, at least some of the snippet, e.g., “570 N. Shoreline,” may be highlighted. For example, a specific portion may be highlighted, i.e., draw attention to or otherwise emphasize, by modifying the format of the specific portion such as by underlining, bolding, italicizing, foreground and/or background color changing, font and/or size changing, border drawing, text animating (e.g., “marching red ants”, etc.), aligning, kerning, style editing/adding/removing. The formatting change may help draw the user's attention to the specific portion by rendering the specific portion inconsistent or distinct from other parts of the document, site, etc. Additionally or alternatively, information in the target document may be modified, for example, by adding, removing or editing relevant (or irrelevant) information, such as by scrolling to, altering or adding a link, adding an image, deleting surrounding aspect, adding new text, adding a popup or hover window, adding and/or executing JavaScript instructions and/or other computing instructions in other languages or methods. The information change may add links to relevant information known to the source page, to provide a method of returning to the source page, to add known links to the target page, etc.
In one embodiment of the present invention, navigation by the browser directly to the specified query-relevant intra-document portion is implemented on the client side while an instruction to the client browser to navigate directly to the intra-document portion is provided by a source, e.g., a server or search engine, providing the clickable link. In particular, in one embodiment of the invention the client browser has installed therein an artificial named anchor module that may be implemented via a toolbar such as the Google toolbar, a dynamic link library (DLL) or any other type of plug-in, a browser helper object (BHO), or any other suitable mechanism to implement the desired functionality in the browser. Note that the functionality need not be implemented using a module and that the browser, shell or Word document viewer, etc. can implement the functionality natively without an add-on. The artificial named anchor module enables the browser to recognize when an URL includes an artificial named anchor. In one embodiment, the artificial named anchor module may be implemented to recognize as artificial any named anchor that begins with a preassigned, artificial named anchor prefix. For example, any set of suitable preassigned text characters may be utilized as the preassigned anchor prefix. In one embodiment of the invention, the preassigned anchor prefix is relatively obscure so as to reduce the likelihood of conflicts with actual anchors in the destination webpage. Any other suitable mechanism for recognizing an artificial named anchor may be utilized. As an example, the preassigned text characters may appear anywhere within the name of the artificial anchor, e.g., as a suffix or anywhere within the artificial anchor.
In the example shown in
As is evident, the client-side process may be implemented via the artificial named anchor module installed in the browser.
At block 208, the browser determines if the selected hyperlink references a named anchor. If not, then the navigation proceeds as normal at block 210. Alternatively, if the selected hyperlink references a named anchor, then the browser determines if the named anchor is an artificial anchor at block 212. As noted above, the browser may determine that an anchor is artificial if the anchor begins with a preassigned artificial anchor prefix e.g., _g_. If the browser determines that the anchor is not artificial, then the navigation proceeds as normal at block 210. Alternatively, if the browser determines that the anchor is artificial, then the browser may parse and optionally unencode the artificial anchor at block 214. In other implementations, different or no encoding mechanisms can be employed. For example, the browser may strip the artificial anchor of the preassigned anchor prefix, e.g., _g_. The browser then loads the destination webpage and directly navigates to and may also highlight, such as by modifying the formatting of and/or information in the portion of the destination webpage specified by the artificial anchor at block 216. In effect, the browser typically would find, highlight and scroll to the first instance of the portion of the destination webpage specified by the artificial anchor.
It is noted that in one embodiment of the present invention if the client web browser does not have artificial named anchor module installed, then the browser will default to ignoring the artificial named anchor as such an anchor would not exist in the actual target webpage. However, if the client web browser (or the client device in general) does have the appropriate artificial named anchor module installed, the artificial named anchor module will process artificial anchors according to the exemplary client-side process 200 described above. Thus, the artificial anchor serves as an instruction to the artificial named anchor module or to the client browser in general.
The client-side process 200 may allow any source (referral webpage or document) to utilize the artificial named anchor mechanism such that any client device with the artificial named anchor module installed would perform the artificial anchor recognition and processing process 200 to navigate directly to the portion of the target webpage referenced by the artificial anchor. Alternatively, the artificial named anchor module may additionally examine the source (referral webpage) of a hyperlink with an artificial named anchor and only process those whose source is authorized. For example, the client process may determine whether a source is authorized by sniffing an appropriate cookie or by use of headers, for example.
Artificial anchors are generally most useful for searching for text within the target webpage. However, other items to be displayed in the browser and/or otherwise defined by the target webpage may also be searched. Examples include image name, tag identification (ID), tag name, location in the document object model (DOM), HTML byte offset, a general offset or location definition within the search result document, etc. In addition to using artificial anchors to find, highlight and scroll to the referenced text or other portion of the target webpage, the client-side process may alternatively or additionally perform other functions. For example, the client-side process may be implemented to find and highlight occurrences of specific words within the target webpage, e.g., by using a different preassigned artificial anchor prefix such as “_gh_.” Thus, multiple occurrences of the specific word(s) or phrase(s) being searched would be highlighted. As another example, the client-side process may be implemented to find and scroll to a specified image based on, for example, the image name, within the target webpage, e.g., by using a different preassigned artificial anchor prefix such as “_gi_.” In addition, the artificial anchor module of the client device may alternatively perform a fuzzy (best effort) search rather than an absolute or strict search when searching for the specific portion referred to by the artificial anchor.
While the artificial anchors are recognized and processed by the client-side process 200, in one embodiment the artificial anchors are generated by a server-side process although a client-side process may be similarly implemented.
For each search result 226, the search engine may determine whether the search result hyperlink already includes or references an anchor at block 228. Search engines typically do not return hyperlinks with anchors as anchors are generally not indexed. If such is the case, block 228 may be eliminated. If the URL already includes an anchor, then the search engine may continue onto the next search result at 226. Alternatively, the search engine may strip the anchor from the URL at block 230.
If the search result URL already includes an anchor and the search engine performs block 230 or if the search result URL does not include an anchor, then the search engine generates a modified search result URL by appending an artificial named anchor to the search result URL at block 232. For example, the search engine may use a preassigned artificial anchor prefix such as “_g_” or any other mechanism to signal to the client device that the named anchor is artificially generated.
As noted above, each search result may include a search result hyperlink referencing the target webpage and one or more snippets extracted from the target webpage to which the hyperlink refers. When there are multiple snippets associated with a given search result, the snippets are typically separated an ellipsis, such as a three-dot ellipsis. The search engine may transform each snippet into at least one active snippet in which each active snippet is a hyperlink with an artificial anchor that references the portion of the target webpage containing the corresponding snippet or portion of the snippet. For example, each snippet may optionally be parsed into multiple snippet segments in which the search engine transforms each snippet segment into a separate hyperlink each with a corresponding artificial anchor. In one embodiment, the snippet may be segmented in accordance with punctuation marks that the snippet contains. In an alternative embodiment, the active snippet may link to an artificial anchor that simply points to the search term or phrase, for example.
After the search engine generates the hyperlink with the artificial anchor, the process 220 then continues with the next search result at 226. After all search results have been processed, the search engine server transmits the search results page to the client device at block 234.
In one alternative embodiment, the search engine may also determine if the target webpage already contains a named anchor at or near the snippet, either before or instead of performing block 232 as shown in the flowchart of
Process 220 may be implemented on the server side although it may be alternatively or additionally implemented on the client side such as via the client-side artificial anchor module or other suitable mechanism. When the process of generating artificial anchors is implemented on the client side and/or when the artificial anchor generation process is not implemented by the search engine utilized by the user, the client-side process may examine each snippet in each search result and generate a hyperlink referencing an artificial named anchor.
As is evident, the combination of generating artificial anchors and recognizing and processing artificial anchors improves the user's web browsing experience by allowing the user to navigate directly to a specific intra-document portion of the target document or webpage corresponding to the relevant snippet. The artificial anchors can be used with any suitable search results such as the Google's standard search, Geo-Search, Froogle search, etc.
The use of artificial anchors is merely one embodiment. For example, the server may provide hints or instructions to the client browser by inserting hidden tags in the results page or attributes on the A tags. The installed browser module on the client side skims the DOM of each results page and extracts the relevant information from these hints or instructions. Thus, when the user navigates to a target webpage or document, the installed browser module applies the desired result of these instructions to achieve similar functions. Client web browsers that do no expect such instructions, i.e., without the appropriate module installed, for example, would simply ignore the instructions. In such an embodiment, the user would not see an artificial anchor appended to the URL in the address bar of the client browser.
In one embodiment, to minimize the impact of transmitting extra information from the server that will only be ignored by the client device or more specifically the client browser if the client device is not installed with the artificial anchor module, the server may sniff the relevant cookie on the client device and determine if the artificial anchor module is installed. To facilitate such a process, installation of the artificial anchor module may cause the relevant cookie to be created and modified. If the artificial anchor module is not installed, then the server, e.g., search engine, is informed that the artificial anchor module is not installed when the query is submitted and the search engine may proceed with the search without generating references to artificial links, for example.
In an alternative embodiment, the mechanism for automatically scrolling to a specific portion of a target page may be implemented on the server side. With server side implementation, a client side artificial anchor module may not be needed. For example, in response to the user clicking on a particular snippet line, the server returns a cached page directly scrolled to a portion of the target document corresponding to the selected snipped. In one embodiment, the search query itself and the particular snippet line number are provided to the server when the user clicking on a particular snippet line. The server then regenerates the snippets, i.e., rerun the snippet generation algorithm, and return the cached page using, for example, JavaScript or other mechanism to automatically scroll to the portion of the cached page that corresponds to the selected snippet line. As another example, each snippet for a given target page is a link to a portion corresponding to the snippet in a cached page. In particular, the link to the cached page may include the query as well as additional information, e.g., a hint such as in the form of an anchor, to appropriately position or scroll the cached page in the browser using a named anchor. The cached page in turn may include named anchors each prefixing a portion of the cached page corresponding to the snippet. In general, with server side implementation, a server may proxy the target page or an intermediary, e.g., a web proxy or IBM's Web Intermediary (WBI), may implement the server side functionality.
In one embodiment, the system may be configured such that the browser may simultaneously display all the snippet lines, such as with the use of multiple frames each with at least one of the snippet lines visible within the browser. Alternatively, the server may be configured so as to return a cached page within one or more frames within a frame set with each frame scrolled to display one of the snippet lines. For example, where a snippet generation engine returns three snippet lines, the browser may contain three frames within a frame set, with each frame displaying the same target or cached page and each scrolled to a different corresponding one of the snippet lines so as to simultaneously display all of the snippet lines generated by the snippet engine.
The input device 130 may include one or more conventional mechanisms that permit a user to input information to the client device 102 such as a keyboard, a mouse, a pen, voice recognition and/or biometric mechanisms, etc. The output device 132 may include one or more conventional mechanisms that output information to the user, including a display, a printer, a speaker, etc. The communication interface 134 may include any transceiver-like mechanism that enables the client device 102 to communicate with other devices and/or systems. For example, the communication interface 134 may include mechanisms for communicating with another device or system via a network, such as network 108.
The client devices 102 perform certain searching-related operations such as those described above. The client devices 102 may perform these operations in response to the processor 122 executing software instructions contained in a computer-readable medium, such as memory 124. A computer-readable medium may be defined as one or more memory devices and/or carrier waves. The software instructions may be read into memory 124 from another computer-readable medium such as the data storage device 128 or from another device via the communication interface 134. The software instructions contained in memory 124 causes processor 122 to perform search-related activities described below. Alternatively, hardwired circuitry may be used in place of or in combination with software instructions to implement search-related processes described herein. Thus, the present invention is not limited to any specific combination of hardware circuitry and software.
The servers 104 and 106 may include one or more types of computer systems, such as a mainframe, minicomputer, or personal computer capable of connecting to the network 108 to enable servers 104, 106 to communicate with the client devices 102. In alternative implementations, the servers 104, 106 may include mechanisms for directly connecting to one or more client devices 102. The servers 104, 106 may transmit data over the network 108 or receive data from the network 108 via a wired or wireless connection.
The servers may be configured in a manner similar to that described above in reference to
While the exemplary embodiments of the present invention are described and illustrated herein, it will be appreciated that they are merely illustrative and that modifications can be made to these embodiments without departing from the spirit and scope of the invention. Thus, the scope of the invention is intended to be defined only in terms of the following claims as may be amended, with each claim being expressly incorporated into this Description of Specific Embodiments as an embodiment of the invention.
