Method for event initiated video capturing and a video camera for capture event initiated video
First Claim
1. Method for recording an event initiated video sequence, the method comprising:
- continuously capturing video frames;
temporarily storing video frames in a video buffer;
detecting a first event;
initiating, in response to the detection of the first event, a video sequence recording session for recording of a video sequence in a non-volatile memory;
recording, in response to the detection of the first event, in the non-volatile memory, pre-event frames of the captured video data present in the buffer;
recording, in the non-volatile memory, post-event frames of the video data captured during a post-event time period related to the first event, the post-event time period starting at the detection of the first event;
starting a first event delay time period in response to the expiration of the post-event time period of the first event;
detecting a second event after expiration of the post-event time period of the first event and before expiration of the first event delay time period;
recording, in response to detection of the second event, in the non-volatile memory, frames from the video buffer representing a time period starting at the expiration of the post-event time period of the first event and ending at the detection of the second event;
recording, in the non-volatile memory, frames of the video data captured during a post-event time period related to the second event, the post-event time period starting at the detection of the second event; and
closing the video sequence recording session if a delay period expires and no other event process is in progress, wherein an event process includes recording pre-event frames, recording post-event frames, and an event delay time period, and wherein the delay period is a period counted from the expiration of a post-event time period.
1 Assignment
0 Petitions
Accused Products
Abstract
A method and a video camera for recording an event initiated video sequence includes storing captured video frames in a video buffer, detecting a first event, and in response, initiating a video sequence recording session for recording of a video sequence in a non-volatile memory. Pre-event video frames and post-event video frames related to the first event are recorded, where the post-event time period starts at the detection of the first event. A first event delay time period is started in response to the expiration of the post-event time period. The video sequence recording session is closed if a delay period expires and no other event process is in progress.
18 Citations
14 Claims
-
1. Method for recording an event initiated video sequence, the method comprising:
-
continuously capturing video frames; temporarily storing video frames in a video buffer; detecting a first event; initiating, in response to the detection of the first event, a video sequence recording session for recording of a video sequence in a non-volatile memory; recording, in response to the detection of the first event, in the non-volatile memory, pre-event frames of the captured video data present in the buffer; recording, in the non-volatile memory, post-event frames of the video data captured during a post-event time period related to the first event, the post-event time period starting at the detection of the first event; starting a first event delay time period in response to the expiration of the post-event time period of the first event; detecting a second event after expiration of the post-event time period of the first event and before expiration of the first event delay time period; recording, in response to detection of the second event, in the non-volatile memory, frames from the video buffer representing a time period starting at the expiration of the post-event time period of the first event and ending at the detection of the second event; recording, in the non-volatile memory, frames of the video data captured during a post-event time period related to the second event, the post-event time period starting at the detection of the second event; and closing the video sequence recording session if a delay period expires and no other event process is in progress, wherein an event process includes recording pre-event frames, recording post-event frames, and an event delay time period, and wherein the delay period is a period counted from the expiration of a post-event time period. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
-
-
10. Video camera arranged for event initiated recording of video sequences, the video camera comprising:
-
an image sensor arranged to continuously capture video frames; a video buffer arrange to temporarily store video frames; an event detector; a video sequence recording session initiator arranged to initiate, in response to a detection of a first event, a video sequence recording session for recording of a video sequence in a non-volatile memory; a pre-event recorder arranged to record, in response to the detection of the first event, in the non-volatile memory, a number of pre-event frames of the captured video data present in the buffer; a post-event recorder arranged to record, in the non-volatile memory, post-event frames of the video data captured during a post-event time period related to a detected event, the post-event time period starting at the detection of the first event and ranging a number of post-event frames; an event delay timer arranged to time an event delay time period starting at a point in time of an expiration of a post-event time period; wherein the pre-event recorder is further arranged to record, in response to the detection of a subsequent event within the event delay time, in the non-volatile memory, frames from the video buffer representing a time period starting at the expiration of the post-event time period of the event and ending at the detection of the subsequent event; and a video sequence recording session closer arranged to close the video sequence recording session if a delay period expires and no other event process is in progress, wherein an event process includes recording pre-event frames, recording post-event frames, and an event delay time period. - View Dependent Claims (11, 12, 13, 14)
-
Specification