Abstract: Systems and methods for indicating that a boundary is crossed during execution of a video game are described. One of the methods includes generating, by a camera, a field-of-view, the field-of-view encompassing a plurality of boundaries that define a volume. The method further includes capturing, by the camera, one or more images of a head-mounted display (HMD) within the field-of-view. The method includes identifying, by a processor, a position of the HMD in a real-world environment from the one or more images. The method includes determining, by the processor, whether the HMD at the position has crossed one of the boundaries. The method includes generating one or more video frames including a guard rail upon determining that the HMD has crossed the one of the boundaries and sending the one or more video frames to the HMD for display.

Abstract: Systems and methods for indicating that a boundary is crossed during execution of a video game are described. One of the methods includes generating, by a camera, a field-of-view, the field-of-view encompassing a plurality of boundaries that define a volume. The method further includes capturing, by the camera, one or more images of a head-mounted display (HMD) within the field-of-view. The method includes identifying, by a processor, a position of the HMD in a real-world environment from the one or more images. The method includes determining, by the processor, whether the HMD at the position has crossed one of the boundaries. The method includes generating one or more video frames including a guard rail upon determining that the HMD has crossed the one of the boundaries and sending the one or more video frames to the HMD for display.

Abstract: Systems and methods for indicating that a boundary is crossed during execution of a video game are described. One of the methods includes generating, by a camera, a field-of-view, the field-of-view encompassing a plurality of boundaries that define a volume. The method further includes capturing, by the camera, one or more images of a head-mounted display (HMD) within the field-of-view. The method includes identifying, by a processor, a position of the HMD in a real-world environment from the one or more images. The method includes determining, by the processor, whether the HMD at the position has crossed one of the boundaries. The method includes generating one or more video frames including a guard rail upon determining that the HMD has crossed the one of the boundaries and sending the one or more video frames to the HMD for display.

Abstract: Systems and methods for indicating that a boundary is crossed during execution of a video game are described. One of the methods includes generating, by a camera, a field-of-view, the field-of-view encompassing a plurality of boundaries that define a volume. The method further includes capturing, by the camera, one or more images of a head-mounted display (HMD) within the field-of-view. The method includes identifying, by a processor, a position of the HMD in a real-world environment from the one or more images. The method includes determining, by the processor, whether the HMD at the position has crossed one of the boundaries. The method includes generating one or more video frames including a guard rail upon determining that the HMD has crossed the one of the boundaries and sending the one or more video frames to the HMD for display.

Abstract: Systems and methods for indicating that a boundary is crossed during execution of a video game are described. One of the methods includes generating, by a camera, a field-of-view, the field-of-view encompassing a plurality of boundaries that define a volume. The method further includes capturing, by the camera, one or more images of a head-mounted display (HMD) within the field-of-view. The method includes identifying, by a processor, a position of the HMD in a real-world environment from the one or more images. The method includes determining, by the processor, whether the HMD at the position has crossed one of the boundaries. The method includes generating one or more video frames including a guard rail upon determining that the HMD has crossed the one of the boundaries and sending the one or more video frames to the HMD for display.

Abstract: Systems and methods for indicating that a boundary is crossed during execution of a video game are described. One of the methods includes generating, by a camera, a field-of-view, the field-of-view encompassing a plurality of boundaries that define a volume. The method further includes capturing, by the camera, one or more images of a head-mounted display (HMD) within the field-of-view. The method includes identifying, by a processor, a position of the HMD in a real-world environment from the one or more images. The method includes determining, by the processor, whether the HMD at the position has crossed one of the boundaries. The method includes generating one or more video frames including a guard rail upon determining that the HMD has crossed the one of the boundaries and sending the one or more video frames to the HMD for display.

Abstract: A directional interface object, including: a top tubular portion; a front tubular portion, a top end of the front tubular portion being joined to a first end of the top tubular portion; a bottom tubular portion, a first end of the bottom tubular portion being joined to a bottom end of the front tubular portion; a rear tubular portion, a top end of the rear tubular portion being joined to a second end of the front tubular portion opposite the first end of the front tubular portion, a bottom end of the rear tubular portion being joined to a second end of the bottom tubular portion opposite the first end of the bottom tubular portion; a trackable object disposed at the first end of the top tubular portion.

Abstract: In a gaming system, a user controls actions of characters in the game environment using speech commands. In a learning mode, available speech commands are displayed in a command menu on a display device. In a non-learning mode, the available speech commands are not displayed. A speaker-independent context-sensitive speech recognition module contains a vocabulary of available speech commands. Use of speech commands is combined with input from a controller device to control actions of a character or characters in the game environment.

Abstract: In a gaming system, a user controls actions of characters in the game environment using speech commands. In a learning mode, available speech commands are displayed in a command menu on a display device. In a non-learning mode, the available speech commands are not displayed. A speaker-independent context-sensitive speech recognition module contains a vocabulary of available speech commands. Use of speech commands is combined with input from a controller device to control actions of a character or characters in the game environment.