Network operating system

Context-specific user interfaces for use with a portable multifunction device are disclosed. The methods described herein for context-specific user interfaces provide indications of time and, optionally, a variety of additional information. Further disclosed are non-transitory computer-readable storage media, systems, and devices configured to perform the methods described herein.

Context-specific user interfaces

A method for digital video distribution in which a program is transmitted as a multicast stream over a network at a base rate. The stream includes a sequence of frames encoding video data, the sequence containing anchor points. A request from a client to begin receiving the program is received at a time subsequent to a given anchor point in the multicast stream. Responsively to the request, a boost stream is transmitted to the client beginning from the given anchor point at an accelerated rate relative to the base rate. The boost stream causes the client to display the video data beginning from the given anchor point and then to join the multicast stream when the boost stream has reached a point of synchronization with the multicast stream.

Fast channel switching for digital tv

A system that validates a native code module. During operation, the system receives a native code module comprised of untrusted native program code. The system validates the native code module by: (1) determining that code in the native code module does not include any restricted instructions and/or does not access restricted features of a computing device; and (2) determining that the instructions in the native code module are aligned along byte boundaries such that a specified set of byte boundaries always contain a valid instruction and control flow instructions have valid targets. The system allows successfully-validated native code modules to execute, and rejects native code modules that fail validation. By validating the native code module, the system facilitates safely executing the native code module in the secure runtime environment on the computing device, thereby achieving native code performance for untrusted program binaries without significant risk of unwanted side effects.

Method for validating an untrusted native code module

Techniques for a displaying user interfaces screens of a calendar application include displaying different screens based on an input modality. The calendar application may respond differently to inputs from a touch-sensitive screen, inputs from a rotatable input mechanism, inputs having higher intensities, inputs having lower intensities, and so forth.

Reduced size user interface

Described is a method and system in which storyboard objects coordinate the animation of multiple elements and/or media displayed on a computer graphics display. Storyboards relate properties of elements in an element tree to a timeline, such that the properties associated with a storyboard are animated / play together as a group by starting, stopping, seeking or pausing the storyboard. Triggers, such as controlled by user interaction with the displayed information, including property triggers that change values in response to a state change, and event triggers that fire events, may cause the storyboard to start, stop, pause and seek. Storyboards may be used in XAML-based programs, and may be directly associated with elements, or indirectly associated with elements via styles. Complex properties and changeables are supported. Media playback may be controlled via storyboards, and thereby coordinated with other media playback and/or animations.

Coordinating animations and media in computer display output

In order to allow for application development without requiring extensive graphical design by software developers or extensive software knowledge by graphical designers, applications are separated into a view and a model. Properties in the view and properties in the model are associated through data binding, for example, via a data binding engine. This association allows views to be defined declaratively. Transformations may be necessary to allow the data binding. The data binding allows the data and functionality in the model to be used via the UI as defined in the view. Automatically generated UI and command binding are also enabled.

Rich data-bound applications

Combined object level and property level key framing systems, methods, and user interfaces are provided in which a user can enter a mode where any change to a property is recorded as a key framing action (e.g., creation or edit) at the current time as indicated by a timeline. When a key frame is created in this mode, the surrounding object level key frames are inspected to ensure that the functionality that users expect from object level key frames is maintained. If a user explicitly creates an animation of an attribute that spans an object level key frame, then that span for the animation is maintained as the user edits.

Blended object attribute keyframing model

In this paper we present a new algorithm for solving the data dependent fairing problem for subdivision surfaces, using Catmull-Clark surfaces as an example. Earlier approaches to subdivision surface fairing encountered problems with singularities in the parametrization of the surface. We address these issues through the use of the characteristic map parametrization, leading to well defined membrane and bending energies even at irregular vertices. Combining this approach with ideas from data-dependent energy operators we are able to express the associated nonlinear stiffness matrices for Catmull-Clark surfaces as linear combinations of precomputed energy matrices. This machinery also provides exact, inexpensive gradients and Hessians of the new energy operators. With these the nonlinear minimization problem can be solved in a stable and efficient way using Steihaug's Newton/CG trust-region method. We compare properties of linear and nonlinear methods through a number of examples and report on the performance of the algorithm.

/pdf/data-dependent-fairing-of-subdivision-surfaces-3kkkwjai7u.pdf

Data-dependent fairing of subdivision surfaces

Described is a method and system in which storyboard objects coordinate the animation of multiple elements and/or media displayed on a computer graphics display. Storyboards relate properties of elements in an element tree to a timeline, such that the properties associated with a storyboard are animated / play together as a group by starting, stopping, seeking or pausing the storyboard. Triggers,such as controlled by user interaction with the displayed information, including property triggers that change values in response to a state change, and event triggers that fire events, may cause thestoryboard to start, stop, pause and seek. Storyboards may be used in XAML-based programs, and may be directly associated with elements, or indirectly associated with elements via styles. Complex properties and changeables are supported. Media playback may be controlled via storyboards, and thereby coordinated with other media playback and/or animations.

Method and system for coordinating animations and media in computer display output

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