Mobile security audio-video recorder with local storage and continuous recording loop

• US 20120307050A1
• Filed: 09/20/2009
• Published: 12/06/2012
• Est. Priority Date: 09/20/2009
• Status: Active Grant

• Current Assignee: Tibet Mimar
• Original Assignee: Tibet Mimar
• Inventors: Mimar, Tibet
• Granted Patent: US 8,547,435 B2
• Time in Patent Office: Days
• US Class Current: 348/143
• CPC Class Codes: G07C 5/0866 the electronic data carrier being a digital video recorder in combination with video camera
• CPC Class Codes: G08B 13/19676 Temporary storage, e.g. cyclic memory, buffer storage on pre-alarm

Abstract

An internet connected mobile security system for recording at least one audio and video on a removable semiconductor storage media in a continuous record loop for evidentiary documentation purposes inside an automotive vehicle or as a wearable video recording device is described.

Claims

1. (canceled)

2. An apparatus for a vehicle security system, the apparatus comprising:

a front view camera sensor, said front view camera sensor is configured to capture 30 frames-per-second at a minimum of high definition resolution;

a rear and side view wide angle camera sensor, said rear and side view wide angle camera sensor is configured to capture 30 frames-per-second at a minimum of high definition resolution;

at least one image signal processor coupled to said front view camera sensor and said rear and side view wide angle camera sensor for performing image signal processing functions including but not limited to auto white balance, auto gain, wide-angle lens barrel distortion reduction, lens defect compensation, and motion stabilization;

a motion adaptive spatial and temporal filtering unit that is coupled to output of said at least one image signal processor for preprocessing of video data;

at least one video compression unit according to H.264 standard that is coupled to output of said motion adaptive spatial and temporal filtering unit, said at least one video compression unit can compress 30 frames-per-second at a minimum of high definition resolution;

a microphone, audio preamplifier, audio-to-digital conversion circuit, and an audio compression unit;

a multiplexer to combine output of said audio compression unit and said at least one video compression unit;

a processor to store output of said multiplexer on a removable non-volatile semiconductor storage media in a continuous record loop in a circular buffer, said circular buffer is capable of storing multiple days of storage of surveillance data, in accordance with size of said removable non-volatile semiconductor storage media, before oldest data is overwritten by newly recorded video;

a transratinq unit coupled to said removable non-volatile semiconductor storage media for transmitting said stored surveillance data at a different bit rate in accordance with transmit channel and destination capabilities;

an interface to internet coupled to said processor using an interface including but not limited to 802.11 wireless interface, 3G data interface, or 4G data interface;

wherein said surveillance data from said circular queue for a time of interest from a start time to an end time is sent by said processor upon request by a remote device interfaced to said interface to internet in a H.264 compressed data file format;

wherein, in case of a trigger event, data enveloping said trigger event is saved and transrated before transmittal to one or more predefined internet destinations;

the apparatus is housed in a single and compact housing that is mounted on the front or back windshield of a vehicle; and

said removable non-volatile semiconductor media is configured to be unplugged and its contents viewed by plugging it into a personal computer or a TV.

3. The apparatus according to claim 2, wherein said removable non-volatile semiconductor media is one of including but not limited to USB memory key, SDHC memory card, micro SD card.

4. The apparatus according to claim 2, further including an accelerometer to store speed and acceleration information as meta data along with audio and video data.

5. The apparatus according to claim 2, further including a rechargeable battery.

6. (canceled)

7. (canceled)

8. An apparatus for personal security and evidentiary recording, the apparatus comprising:

a front field of view camera image sensor with at least high definition resolution;

a rear and side wide angle field of view camera image sensor with at least high definition resolution

an audio microphone;

a removable flash memory including but not limited to USB memory key, SD memory card, or micro SD memory card;

a rechargeable battery;

a system-on-a-chip processor coupled to said removable flash memory, said rear and side field of wide angle view camera image sensor and said front field of view camera image sensor, said system-on-a-chip processor comprising;

camera ISP hardware unit for both said rear and side field of wide angle view camera image sensor and said front field of view camera image sensor;

lens correction ISP hardware unit for both said rear and side field of wide angle view camera image sensor and said front field of view camera image sensor, which performs including but not limited to lens barrel distortion and lens defect compensation;

motion stabilization ISP hardware unit that is coupled to output of said lens correction ISP hardware unit for both said rear and side field of wide angle view camera image sensor and said front field of view camera image sensor;

motion adaptive spatial and temporal filtering ISP hardware unit that is coupled to output of said motion stabilization hardware unit for both said rear and side field of wide angle view camera image sensor and said front field of view camera image sensor;

at least one H.264 video compression at 30 frames-per-second for multiple video streams that is coupled to output of said motion adaptive spatial and temporal filtering ISP hardware unit;

a transrating unit coupled to said removable flash memory for changing bit rate and resolution before transmittal in accordance with transmit channel conditions and request from a remote viewing site;

audio front-end and audio compression;

audio and video multiplexing;

storing multiplexed audio;

wherein compressed and multiplexed audio-video is stored on said removable flash memory using a circular queue, said circular queue is capable of storing at least several days of recording;

wherein contents of said removable flash memory is viewable on a personal computer or a TV; and

a small compact enclosure that is smaller than 3½

inch by 3 inch by 1½

inch in size that includes and integrates all parts of said apparatus that is mounted on the windshield of a vehicle.

9. The apparatus according to claim 8, further including an accelerometer for recording speed and acceleration data in addition to audio and video data.

10. The apparatus according to claim 8, further including a 3G data connection interface to transfer a portion of recording based from time t1 to time t2 in accordance with a remote request, said portion of recording may be decompressed from said circular queue, temporal and/or spatial scaled, and then recompressed at a different bit-rate before transmission in accordance with request and capabilities of receiving device.

11. The apparatus according to claim 8, further including a solar cell to recharge said rechargeable battery.