# US 2013/0156397 A1 · Method for video/audio recording using multiple resolutions

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- Number: US 2013/0156397 A1
- Document ID: US20130156397A1
- Status: Published application
- Kind: A1
- Application number: 13/723,747
- Filed: 2012-12-21
- Published: 2013-06-20
- Earliest claimed: 2006-03-07
- Assignees: Coban Technologies, Inc.
- Inventors: ALLAN CHEN; WILLIAM CHICHIH TAl; HUNG C. CHANG
- Web page: https://patentgrep.com/patent/US20130156397A1

## CPC

- H04N 9/79: Processing of colour television signals in connection with recording
- H04N 5/772: {the recording apparatus and the television camera being placed in the same enclosure}
- G11B 2020/1062: {Data buffering arrangements, e.g. recording or playback buffers}
- H04N 9/7921: {for more than one processing mode}
- H04N: PICTORIAL COMMUNICATION, e.g. TELEVISION
- G11B: INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER (recording measured values in a way that does not require playback through a transducer G01D9/00; recording or playback apparatus using mechanically marked tape, e.g. punched paper tape, or using unit records, e.g. punched or magnetically marked cards G06K; transferring data from one type of record carrier to another G06K1/18; circuits for coupling output of reproducer to radio receiver H04B1/20; gramophone pick-ups or like acoustic electromechanical transducers or circuits therefor H04R)

## Abstract

Aspects of the present invention include method and apparatuses that may be utilized to more efficiently use available storage space for a digital video recording system in a law enforcement vehicle and final “backend storage systems.” In one embodiment of the present invention, video and audio data is recorded in one or more buffers when a triggering event is activated, while a digital video recording device accounts for specified pre-event time, a time period before a first triggering event has been activated, and a post-event time, a time period after a second triggering event has been activated. The system will tag the actual start and stop points of events in one or more buffers based on a first and a second triggering event and will then include the pre-event and post-event data along with specified data. The system will then extract the event from one or more buffer files and write the event into final video files to be stored in a hard disk drive. By recording the pre-event and post-event data in multiple buffer files and extracting the final result from selected buffer files based on the nature of the event type, the system ensures that storage device is effectively used and, in this way, useful information is recorded.

## Claims

### Claim at position 1

1-20. (canceled)

### Claim 21

A method for recording video data corresponding to an event, comprising:
detecting at least one signal indicating a start of at least a first event,
recording video data of the at least first event after detecting the at least one signal, wherein the video data of the at least first event is stored in at least two different resolutions in at least one buffer file, and wherein at least a first predefined event category is assigned to the video data;
selecting the video data stored in the at least one buffer file after detecting a signal indicating an end of the event;
tagging a first point in the at least one buffer file indicating detection of the signal indicating the start of the event; and
storing the selected video data in a first storage medium.

### Claim 22 (depends on 21)

The method of claim 21, wherein the at least one buffer file comprises a first buffer file adapted to record video data at a high resolution and a second buffer file adapted to record video data at a low resolution.

### Claim 23 (depends on 21)

The method of claim 21, wherein the video data of the at least first event is stored in at least two different resolutions in at least one buffer file in at least two separate areas.

### Claim 24 (depends on 23)

The method of claim 23, wherein the at least one buffer file comprises a first buffer file adapted to record video data at a high resolution and a second buffer file adapted to record video data at a low resolution.

### Claim 25 (depends on 21)

The method of claim 21, wherein the at least one buffer file comprises a first buffer area adapted to record video data at a high resolution and a second buffer area adapted to record video data at a low resolution.

### Claim 26 (depends on 21)

The method of claim 21, wherein the video data stored in one of the buffers is selected automatically based on the assignment of the at least first predefined event category to the video data.

### Claim 27 (depends on 21)

The method of claim 21, wherein the at least first predefined event category is selected from the group consisting of: potential driving while intoxicated and potential license plate expiration.

### Claim 28 (depends on 21)

The method of claim 21, wherein the video data of the at least first event is stored at different resolutions in at least two separate buffer files.