Abstract: This document describes techniques and systems for reducing a state based on sensor data from an Inertial Measurement Unit (IMU) and radar. The techniques and systems use inertial sensor data from an IMU as well as radar data to reduce states of a user equipment, such as power, access, and information states. These states represent power used, an amount of access permitted, or an amount of information provided by the user equipment. The techniques manage the user equipment's states to correspond to a user's engagement with the user equipment, which can save power, reduce unwarranted access, and reduce an amount of information provided when the user is not engaged with the user equipment, thereby protecting the user's privacy.

Abstract: Systems and techniques are described for robust radar-based gesture-recognition. A radar system (104) detects radar-based gestures on behalf of application subscribers. A state machine (2000) transitions between multiple states based on inertial sensor data. A no-gating state (2002) enables the radar system (104) to output radar-based gestures to application subscribers. The state machine (2000) also includes a soft-gating state (2004) that prevents the radar system (104) from outputting the radar-based gestures to the application subscribers. A hard-gating state (2006) prevents the radar system (104) from detecting radar-based gestures altogether. The techniques and systems enable the radar system (104) to determine when not to perform gesture-recognition, enabling user equipment (102) to automatically reconfigure the radar system (104) to meet user demand.

Abstract: A computing device is described that displays a set of graphical elements in a status bar of a graphical user interface. Each graphical element corresponds to a different pending notification. While expanding a notification shade from the status bar, the device displays the graphical elements within an area of the notification shade that is adjacent to a leading edge of the notification shade. Responsive to determining that a particular notification message is newly visible, the device removes, a particular graphical element that corresponds to the particular notification message, and displays the particular graphical element within the particular notification message. In this manner, interaction with the notification area may be more efficient, as during a process of expanding or contracting this area, the user may be informed the underlying state of the set of pending notifications as a whole.

Abstract: A computing device is described that receives one or more notifications, categorizes, each of the one or more notifications as either: important and ongoing, person-to-person, or regular, by-the-way, and groups the one or more notifications according to category. The computing device receives a user input for displaying a notification area of a graphical user interface and displays the notification area such that: by-the-way notifications are displayed least prominent, regular notifications are displayed more prominent than the by-the-way notifications, person-to-person notifications are displayed more prominent in than regular notifications, and important and ongoing notifications are displayed more prominently than person-to-person notifications. Appropriate categorization of notifications may provide a user with information relating to underlying operation of the computing device, and may for example immediately indicate the significance of one or more notifications to that operation.

Abstract: In general, techniques of this disclosure may enable a computing device to defer output of a reengagement type notification until the computing device determines that a user is likely to engage with the application or service that generated the notification, as opposed to ignoring or dismissing the notification and/or the application or service. In this way, by precisely controlling its output, the described techniques may enable a computing device to increase a likelihood that a reengagement notification will succeed in reengaging a user with the application or service associated with the notification.

Abstract: While a computing device is in a limited-access state, the computing device may output for display a user interface element. Responsive to the computing device receiving an indication of a first user input at a region of a presence-sensitive input device that corresponds to at least a portion of the user interface element as displayed, the computing device may alter the visual appearance of the user interface element to indicate that the user interface element is selected. Responsive to the computing device determining that it has received the indication of the second user input at the region of the presence-sensitive input device within the predefined period of time subsequent to receiving the indication of the first user input, the computing device may activate the user interface element.