Digital video recording method in an audio detection mode

• US 20060198611A1
• Filed: 03/03/2005
• Published: 09/07/2006
• Est. Priority Date: 03/03/2005
• Status: Active Grant

• Current Assignee: Rifatron Company Limited
• Original Assignee: Sam Myung Co., Ltd.
• Inventors: Park, Jung-Jae
• Granted Patent: US 8,086,088 B2
• Time in Patent Office: Days
• US Class Current: 386/226
• CPC Class Codes: H04N 21/42203 sound input device, e.g. microphone
• CPC Class Codes: H04N 21/4223 Cameras H04N23/00 takes precedence
• CPC Class Codes: H04N 21/4334 Recording operations recording of a television signal H04N5/76; arrangements for recording or accumulating broadcast information or broadcast-related information H04H60/27
• CPC Class Codes: H04N 21/4394 involving operations for analysing the audio stream, e.g. detecting features or characteristics in audio streams arrangements characterised by components specially adapted for monitoring, identification or recognition of audio in broadcast systems H04H60/58
• CPC Class Codes: H04N 21/440281 by altering the temporal resolution, e.g. by frame skipping television signal recording using magnetic recording on tape for reproducing at a rate different from the recording rate H04N5/783
• CPC Class Codes: H04N 5/76 Television signal recording

Abstract

The present invention is related to a digital video recording method, and in particular, when a recording mode is audio detection, according to an audio signal transmitted from a mike mounted on a camera or a mike mounted separately, this method records the video taken by said camera during the time period for which a recording speed and video resolution is already set as super-high speed and high video resolution. After the elapse of an already set time period, when the audio signal is sensed, this method records the video by varying the recording speed and video resolution from super-high speed and high video resolution into low-speed and low video resolution at a time interval which is already set. Therefore, it becomes possible to obtain the specific information about the video data which is important in an unmanned security system.

Claims

1. A digital video recording method in an audio detection mode, for recording and judging whether an audio is detected or not, or analyzing the video taken by the camera, and an audio data inputted from a mike, and then sensing a motion of the video, wherein an operation signal is generated by a camera when sensing a motion by a sensor of the camera,

a step for judging whether a motion is generated or not after a digital video processor analyzes a video inputted from said camera,

a step for judging an audio signal exceeds the predetermined value or not after a digital signal processor analyzes an audio signal inputted from a mike,

a step for recording on said storage medium a video data taken by said camera during a time period which is already set, according to a motion detection mode and an audio detection mode in which an user sets a recording speed and video quality, when said audio signal is generated,

a step for judging whether an operation signal is generated from a sensor of said camera after the elapse of said time period,

a step for stopping the recording of the video taken by said camera, and the audio data inputted from the mike, or recording varied recording speed and video resolution on said storage medium by varying said recording speed and video resolution from super-high speed and high video resolution into low-speed and low video resolution at predetermined time interval which is already set, based upon said judging result,