Home monitoring digital video recorder (DVR)
First Claim
1. A digital video recorder connected to at least a security camera for receiving its analog video signal and audio signal, said security camera being installed in a monitored area, said digital video recorder comprising:
- at least a storage unit for storage of digital video and audio data; and
a chip having a video signal conversion circuit for converting said analog video signal into a digital video signal, an audio signal conversion circuit for converting said analog audio signal into a digital audio signal, a signal compression circuit for comprising said digital video signal and audio signal into a compressed digital A/V data, and a detection circuit for recognizing motion of objects in said monitored area based on said digital A/V data.
1 Assignment
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Accused Products
Abstract
A digital video recorder makes use of a flash memory for storage of A/V data to accomplish multiple times of read/write. A programmable digital signal processing (DSP) chip is also provided to integrate various circuits with different functions in a modular way to decrease the number of chips, lower the cost, and increase the reliability. Moreover, the DSP chip can monitor the actions of video playback/recording without connection to an external computer, hence accomplishing easy operation without complex setting. There is also a built-in video recognition trigger mechanism, which can be replaced by an external personal infrared (PIR) circuit to trigger recording actions only when an event takes place. A small-size, low-price digital video recorder of easy installation and high reliability can thus be provided, and can effectively save power to be suitable for home use.
23 Citations
20 Claims
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1. A digital video recorder connected to at least a security camera for receiving its analog video signal and audio signal, said security camera being installed in a monitored area, said digital video recorder comprising:
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at least a storage unit for storage of digital video and audio data; and
a chip having a video signal conversion circuit for converting said analog video signal into a digital video signal, an audio signal conversion circuit for converting said analog audio signal into a digital audio signal, a signal compression circuit for comprising said digital video signal and audio signal into a compressed digital A/V data, and a detection circuit for recognizing motion of objects in said monitored area based on said digital A/V data. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification