Inventor(s)

Shivam AgrawalFollow

Abstract

Some wearable devices such as augmented/mixed reality (AR/MR) glasses include cameras that enable capturing photos or videos of the user’s field of view. In some cases, AR/MR glasses may be set to a mode where video is captured continuously. Such capture is useful to determine relevant real-time information and provide it to the user as an overlay. However, when a user wearing such glasses navigates in the world, it is possible that the glasses capture video of other individuals or in locations. This disclosure describes techniques to limit storage of video captured via wearable devices. A circular buffer capable of a pre-configured storage capacity is used to store the captured video, with frames beyond the pre-configured limit being automatically overwritten. The buffer can be a hardware buffer separate from the device memory or a secure part of the main memory. No access to the buffer is provided to user applications. No features are provided to save, export, or otherwise retain the captured video. Features are provided to enable the user to query the captured video from the buffer. When video capture is stopped, contents of the buffer are automatically emptied. In this manner, storage of video data is prevented, ensuring it remains ephemeral and available only for immediate use. Optionally, an audible and/or visual indicator is provided to indicate that video is being recorded.

Creative Commons License

Creative Commons License
This work is licensed under a Creative Commons Attribution 4.0 License.

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