摘要:
Several embodiments of an electronic document delivery system are described including a client machine (e.g., a palmtop/handheld computer or wireless communication device) coupled to a transcoder proxy. The system allows a client machine with limited resources to provide an assistive technology solution for a physically challenged user. In one embodiment, the client machine includes an assistive technology which functions as an interface for a device (e.g., a Braille display or a speech engine). The transcoder proxy receives an electronic document expressed in a first digital format (e.g., HTML or XML). The transcoder proxy assigns a unique identifier to the element, and forms a model of a logical structure of the document (e.g., a document object model or DOM). The transcoder proxy uses the model to produce an “original” script including a portion of the document expressed in a second digital format (e.g., a scripting language). The client machine uses the original script to present the document portion. The client machine generates an assistive technology event in response to user input via the assistive technology device, associates the assistive technology event with the element, and provides assistive technology event information and the element identifier to the transcoder proxy. The transcoder proxy accesses the element within the model using the identifier, uses the model to produce a “modification” script, and provides the modification script to the client machine. The client machine uses the modification script to modify the presented portion of the document.
摘要:
Systems and methods for presenting (e.g., displaying) a hierarchical structure are presented. The hierarchical structure includes multiple elements and defines hierarchical relationships between the elements. The hierarchical structure may be embodied within an electronic document such as a Web document, an interactive application program, or a map divided into sections. Each element has a “presentation property” which may be a value or a function. One of the elements has “focus” (e.g., as created, by default, etc.). A “branch isolation” method includes forming a tree-like model of the hierarchical structure having multiple nodes and at least one branch. Each node represents one of the elements. One node is a root node and occupies a highest level in the hierarchical structure. A given branch connects a first node in a first level to a second node in a level directly below the first level. Each branch represents a hierarchical relationship between connected nodes. A “focus node” represents the element receiving focus. A “path” in the model from the root node to the focus node is determined. The presentation property of the element represented by the root node is selectively presented. The presentation property of each element represented by a node, other than the root node, along the path from the root node to the focus node is also presented. The presentation property of each element represented by a node in a subtree is also presented, wherein the focus node is a root node of the subtree.
摘要:
Exemplary embodiments disclose a method and system for providing a runtime state of an application on a user interface. The method and system include rendering a user interface element on the user interface in response to a request for a capture of the runtime state of the application. The method and system also include generating control code for managing a response of the user interface element to the user action. The user interface element corresponds to the runtime state and to data including at least one of control data and inaccessible data. The control data corresponds to control of the user interface element. The inaccessible data corresponding to a portion of the user interface element not depicted on the user interface for the capture.
摘要:
An electronic document delivery system is described including a client machine coupled to (i.e., in wired or wireless communication with) a transcoder proxy. The client machine may be, for example, a palmtop or handheld computer or a wireless communication device with limited memory and/or processing capability. The client machine includes a Braille display and provides Braille format information identifying a selected Braille format to the transcoder proxy. The transcoder proxy is coupled to receive the Braille format information and electronic documents. Each electronic document includes presentation information (e.g., text and/or user controls such as buttons). The transcoder proxy includes a rule set including rules for translating electronic documents from any one of a set of first digital formats (e.g., a text-based markup language such as HTML, extensible markup language/XML, POSTSCRIPT, or portable document format/PDF) to any one of various Braille formats (e.g., English Braille, European Braille, Japanese Braille, and/or grades such as grade 1, grade 2, etc.). Locating the rule set within the transcoder proxy reduces the resource requirements of the client machine. The transcoder proxy translates the electronic document from the first digital format to a second digital format (e.g., a scripting language) such that the presentation information is converted to the selected Braille format, and provides the electronic document to the client machine in the second digital format.
摘要:
The present invention is a method for providing a navigable grid to allow for accessible drag-drop in visual modeling tools. The method includes receiving an input which selects an object. The method further includes providing a visual canvas on a display device. The method further includes overlaying the navigable grid onto the visual canvas, the overlying navigable grid being of a defined granularity, the defined granularity being based on an underlying application being implemented, the overlying navigable grid further being keyed input device-navigable based on the defined granularity. The method further includes designating a drop position on the navigable grid when a position input is received via a keyed input device. The method further includes dropping the object onto a destination position of the visual canvas when a drop command input is received. Further, the drop position on the overlying navigable grid is directly aligned over the destination position of the visual canvas.
摘要:
Several different embodiments of an electronic document delivery system are described including a client machine (e.g., a palmtop/handheld computer or wireless communication device) coupled to a transcoder proxy. The system allows a client machine with limited resources to provide interactive aspects of electronic documents such as Web pages and/or an assistive technology solution for a physically challenged user. The transcoder proxy receives an electronic document including one or more elements and expressed in a first digital format (e.g., HTML or XML). The transcoder proxy assigns a unique identifier to each element, produces an “original” script including at least a portion of the document expressed in a second digital format (e.g., a scripting language), and provides the original script to the client machine. The transcoder proxy may form a model of the document (e.g., a document object model or DOM), and may use the model to produce the original script. The client machine uses the original script to display or otherwise present the portion of the document. The client machine generates an event in response to user input, associates the event with an element within the original script, and provides the event and the identifier assigned to the element to the transcoder proxy. The transcoder proxy accesses the model using the identifier, uses the model to produce a “modification” script, and provides the modification script to the client machine. The client machine uses the modification script to modify the displayed or otherwise presented portion of the document.
摘要:
Several different methods for presenting (e.g., displaying) a hierarchical structure are presented. The hierarchical structure includes multiple elements, and defines hierarchical relationships between the elements. The hierarchical structure may be embodied within an electronic document such as a Web document, an interactive application program, or a map divided into sections. Each element has a “presentation property” which may be a value or a function. A single one of the elements has “focus” (e.g., in accordance with the coding of the document by an author, by default, etc.). A “view depth” method includes forming a model (e.g., a tree structure) of the hierarchical structure. The model includes multiple levels ranked with respect to one another, multiple nodes representing elements, and at least one branch.
摘要:
A mechanism is provided for enforcing accessible content development. The mechanism enforces accessible content development by accessing a tag library descriptor for each of a plurality of markup tags for web content authoring where the tag library descriptor notes one or more tag sub-elements required for accessibility. The mechanism analyzes each markup tag in a piece of web content by comparing the tag library descriptor accessibility requirements to sub-elements included with each markup tag to determine whether all required accessibility sub-elements are present. The mechanism generates an error message if all required accessibility sub-elements of a markup tag are not present.
摘要:
Systems, methods and media for enforcing accessible content development are disclosed. One embodiment provides a method for enforcing accessible content development comprising accessing a tag library descriptor for each of a plurality of markup tags for web content authoring where the tag library descriptor notes one or more tag sub-elements required for accessibility. The method may further include analyzing each markup tag in a piece of web content by comparing the tag library descriptor accessibility requirements to sub-elements included with each markup tag to determine whether all required accessibility sub-elements are present. The method may further include generating an error message if all required accessibility sub-elements of a markup tag are not present. Tile one or more tag sub-elements associated with accessibility may include alternate text for one or more of an image, table, label or graph. Other embodiments are disclosed and claimed.
摘要:
A system and method are described for selectively providing display data to a display device dependent upon an optically detected proximity of a user's face to a camera. One embodiment of a computer system includes the camera, the display device, and a processing system. The camera produces image signals representing a first image and a second image of the user's face, wherein the first image precedes the second image in time. The processing system receives the image signals and analyzes the first and second images to determine the proximity of the user's face to the camera. More specifically, the processing system compares the first and second images to determine the proximity of the user's face to the camera in the second image relative to the proximity of the user's face in the first image. The processing system provides the display data to the display device dependent upon the proximity of the user's face to the camera. In order to determine the proximity of the user's face to the camera, the processing system may compare: (i) a size of the user's face in the first and second images, and/or (ii) a distance between selected facial features of the user in the first and second images. The processing system may provide more of the display data to the display device when the user's face is closer to the camera, and may provide less of the display data to the display device when the user's face is farther from the camera.