Abstract: Mechanisms are provided to allow efficient delivery of content through a content delivery network (CDN) without taxing an origin server while maintaining fine grained location based access control. Requests to a CDN are augmented with quantized and non-quantized versions of location information. A CDN can use quantized location information in a URI to identify and return content if content corresponding to the URI is available in cache. If the content is not available in cache, the CDN can contact an origin server to obtain a result for the request using non-quantized location information. The origin server examines the non-quantized location information to determine whether to respond to the client request with content. The origin server examines the area corresponding to the quantized location information to determine whether the content should be cached at the CDN.

Abstract: A client device receives a user interface event corresponding to a spline curve associated with an object displayed on a mobile device. The user interface triggers creation of a new spline curve based on computation of a new spline tangent associated with the spline curve and phase space-based dynamics of a new state. A scene graph having state information associated with the new state is maintained. A rendering event triggers repainting of the object associated with the spline curve using the scene graph.

Abstract: Techniques and mechanisms are provided for sending targeted content and data to mobile devices. Location information associated with a device is determined. In some instances, the location information is manually entered. In other instances, the location information is determined automatically from characteristics associated with the device. Location information can be obtained from global positioning system (GPS) data, cell-site triangulation, Internet Protocol (IP) address detection, etc. Content and advertising can be provided in a location relevant manner to the mobile device.

Abstract: Techniques and mechanisms are provided for sending targeted content and data to mobile devices. Location information associated with a device is determined. In some instances, the location information is manually entered. In other instances, the location information is determined automatically from characteristics associated with the device. Location information can be obtained from global positioning system (GPS) data, cell-site triangulation, Internet Protocol (IP) address detection, etc. Content and advertising can be provided in a location relevant manner to the mobile device.

Abstract: Mechanisms are provided for allowing a mobile device to dynamically obtain program guide data. A mobile device having the capability of playing media streams is configurable to dynamically request program guide structure information followed by program guide content information. In one example, the program guide structure information allows a user to begin navigating the program guide data in an active and dynamic manner. Program guide content information including data such as program titles, times, icons, and links are then downloaded and displayed as needed. Potentially limitless amounts of program guide data can be provided on a mobile device. Program guide content information can be provided in a generic manner while allowing user layout customization. Program guide information can also be preemptively provided to a mobile device based on a variety of criteria.

Abstract: Mechanisms are provided for allowing a mobile device to dynamically obtain program guide data. A mobile device having the capability of playing media streams is configurable to dynamically request program guide structure information followed by program guide content information. In one example, the program guide structure information allows a user to begin navigating the program guide data in an active and dynamic manner. Program guide content information including data such as program titles, times, icons, and links are then downloaded and displayed as needed. Potentially limitless amounts of program guide data can be provided on a mobile device. Program guide content information can be provided in a generic manner while allowing user layout customization. Program guide information can also be preemptively provided to a mobile device based on a variety of criteria.

Abstract: A device generates an immutable display graph with leaves of the display graph representing low-level graphical operations such as drawings lines or a bitmap and nodes of the display graph representing translation and clipping. Because the display graph is immutable, it can be cached, shared, and rendered quickly. The structure of the display remains fixed, but elements such as rectangle fill, text position, clipping area, translation, and image location, remain time varying and can change without affecting the structure of the display.

Abstract: Management of applications on remote devices is performed independently of managing platform software. A per platform player using a common protocol to communicate and receive applications is installed on a device. The player is developed and installed independently of applications which run using commands supported by the player. On player startup, the player obtains boot instructions, fetches an application manifest, and obtains player and application resources using the application manifest from a content and application server. The content and application server determines application resources to send to the player and tracks applications and application versions installed on a per user/per platform basis.

Abstract: Device independent bytecode is used to provide and manage applications on reprogrammable clients. The same uniform bytecode is used for scripting, presentation, and messaging. For presentation, bytecode is used to create and manipulate a scene graph of objects. To make system calls or perform application logic, bytecode is executed directly in response to user events, timer events, etc. To perform messaging, messages between a client and a server are prepared as bytecode that produce the structured data of a message when executed. A client does not require any compiler, parsers, or other tools to allow execution of rich applications.

Abstract: A client device is configurable to operate as a proxy for server operations. In particular examples, a back-end server performs transactions with a target server such as a vending server by using the client device as a proxy to allow transactions through the client device. The client device obtains from a back-end server logic information for communicating with the target server. The client device need not be configured with logic information to locate and communicate with any particular target entity.

Abstract: A client device receives a user interface event corresponding to a spline curve associated with an object displayed on a mobile device. The user interface triggers creation of a new spline curve based on computation of a new spline tangent associated with the spline curve and phase space-based dynamics of a new state. A scene graph having state information associated with the new state is maintained. A rendering event triggers repainting of the object associated with the spline curve suing the scene graph.

Abstract: Techniques and mechanisms are provided for maintaining session state information in a client server system. Session state information such as session state, time stamp information, activity state, counters, etc. are generated and updated by a server. The session state information is sent in encrypted form to a client and the client maintains the encrypted information. The client is not able to decipher or alter the encrypted information. The client sends the encrypted session state information in requests to the server. The server is able to respond intelligently using session state information from the client. Session state information no longer has to be maintained or replicated by session state managers associated with servers.

Abstract: Mechanisms are provided for allowing a mobile device to dynamically obtain program guide data. A mobile device having the capability of playing media streams is configurable to dynamically request program guide structure information followed by program guide content information. In one example, the program guide structure information allows a user to begin navigating the program guide data in an active and dynamic manner. Program guide content information including data such as program titles, times, icons, and links are then downloaded and displayed as needed. Potentially limitless amounts of program guide data can be provided on a mobile device. Program guide content information can be provided in a generic manner while allowing user layout customization. Program guide information can also be preemptively provided to a mobile device based on a variety of criteria.

Abstract: A client device is configurable to operate as a proxy for server operations. In particular examples, a back-end server performs transactions with a target server such as a vending server by using the client device as a proxy to allow transactions through the client device. The client device obtains from a back-end server logic information for communicating with the target server. The client device need not be configured with logic information to locate and communicate with any particular target entity.

Abstract: Mechanisms are provided for allowing improved selection of program guide information. Program guide information includes channel, time, and program listing information. In particular examples, each program listing is associated with a time slot having beginning time slot boundary and an end time slot boundary. Program listing information can be viewed even after a current time passes an end time slot boundary. In some examples, program listing information may be removed after a predetermined period of time or after a predetermined period of disuse.

Abstract: Techniques and mechanisms are provided for sending targeted content and data to mobile devices. Location information associated with a device is determined. In some instances, the location information is manually entered. In other instances, the location information is determined automatically from characteristics associated with the device. Location information can be obtained from global positioning system (GPS) data, cell-site triangulation, Internet Protocol (IP) address detection, etc. Content and advertising can be provided in a location relevant manner to the mobile device.

Abstract: Systems and methods for data formats which facilitate the encapsulation, transmission, reception, decomposition and processing of heterogeneous sets of data are disclosed. Data may be encoded in one of these data formats, and sent to a recipient, which decodes the data format and renders the data. These data formats may consist of the concatenation of a set of commands, each of these commands in turn composed of a tag, length and a payload. Furthermore, these data formats may provide a compact way to deliver information which allows the rendering of video, images, caption audio as well as user interaction functionality, while simultaneously reducing the computational complexity required of the recipient to decode the data format and render the varying types of data.