Write-protected recording
DCFirst Claim
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1. An apparatus, comprising:
- a sensor having a data capturing component that captures sensor data;
a local memory functionally coupled to the sensor;
a recording facility that records the sensor data into available portions of a buffer in the local memory; and
a protecting facility that responds to a signal to record the sensor data by designating a segment of the buffer as a write-protected segment and by indexing the write-protected segment as a file in the buffer, wherein the write-protected segment includes a pre-recorded subset recorded before the signal is received and a post-recorded subset to be recorded after the signal is received.
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Abstract
A surveillance apparatus continuously records imaged data from a camera into a circular buffer in a local memory. When a record signal is received, the system records the video stream that was recorded before the record signal was received, and the video stream that is recorded after the record signal was received. The recorded segment is then write-protected, so that the surveillance apparatus does not overwrite the recorded segment. The recorded segment could then be sent to a remote memory via a wireless connection to free up local memory for future recording sessions.
26 Citations
13 Claims
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1. An apparatus, comprising:
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a sensor having a data capturing component that captures sensor data; a local memory functionally coupled to the sensor; a recording facility that records the sensor data into available portions of a buffer in the local memory; and a protecting facility that responds to a signal to record the sensor data by designating a segment of the buffer as a write-protected segment and by indexing the write-protected segment as a file in the buffer, wherein the write-protected segment includes a pre-recorded subset recorded before the signal is received and a post-recorded subset to be recorded after the signal is received. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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Specification