Auto-triggered fast frame rate digital video recording

摘要

This disclosure describes techniques for triggering recording of digital video in a fast frame rate mode. In one example, a digital video recording apparatus includes a video sensor that captures digital video data at a fast frame rate in a fast frame rate mode, a video buffer that buffers the captured digital video data according to a first-in-first-out storage schema, a video storage that stores digital video data, and a motion detection unit that detects fast motion in the buffered digital video data, that stores digital video data from the video sensor in the video storage after detecting the fast motion, and that copies the contents of the video buffer to the video storage prepended to the stored video data. The digital video recording apparatus may be incorporated in a wireless communication device, such as a cellular phone.

主权项

1. A video recording method comprising:
buffering digital video data captured by a video sensor in a video data buffer; detecting motion or a scene change in the buffered digital video data; in response to the detection of the motion or the scene change, recording at least a portion of the buffered digital video data, as buffered before the motion or the scene change was detected, to a data storage device separate from the video data buffer; and in response to the detection of the motion or the scene change, recording digital video data captured after the detection of the motion or the scene change by the video sensor to the data storage device, wherein recording the at least a portion of the buffered digital video data and recording newly captured digital video data comprises:
encoding the buffered digital video data and the newly captured digital video data; andstoring the encoded digital video data in the data storage device.