CN103404125A - Image sensor and photographing apparatus including same - Google Patents
Image sensor and photographing apparatus including same Download PDFInfo
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- CN103404125A CN103404125A CN2012800088365A CN201280008836A CN103404125A CN 103404125 A CN103404125 A CN 103404125A CN 2012800088365 A CN2012800088365 A CN 2012800088365A CN 201280008836 A CN201280008836 A CN 201280008836A CN 103404125 A CN103404125 A CN 103404125A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/56—Cameras or camera modules comprising electronic image sensors; Control thereof provided with illuminating means
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/60—Control of cameras or camera modules
- H04N23/65—Control of camera operation in relation to power supply
- H04N23/651—Control of camera operation in relation to power supply for reducing power consumption by affecting camera operations, e.g. sleep mode, hibernation mode or power off of selective parts of the camera
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/70—Circuitry for compensating brightness variation in the scene
- H04N23/74—Circuitry for compensating brightness variation in the scene by influencing the scene brightness using illuminating means
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Abstract
The present invention relates to an image sensor and a photographing apparatus including the same. The image sensor comprises: an analog-to-digital converter processing a signal of brightness information applied from an illuminance sensor; a control unit receiving a digital signal and an image signal applied from the analog-to-digital converter to process the signal; a motion detector detecting a motion from an output image of the control unit, to output a power-off signal and a light emission control signal; a digital-to-analog converter converting the output image of the control unit into an analog signal, and selectively outputting the analog signal, which is converted from the image output signal, according to whether the power-off signal is activated or not; and a light emission control unit selectively controlling a turning-on or turning-off operation of a light emission unit according to the light emission control signal.
Description
Technical field
The present invention relates to a kind of imageing sensor and comprise the filming apparatus of this imageing sensor, particularly, relate to a kind of optical image signal with outside and be converted to the technology of the imageing sensor of electrical picture signal.
Background technology
Generally, imageing sensor is the optical image signal of outside to be converted to the device of electrical picture signal.Particularly, cmos image sensor is to utilize the CMOS technology of preparing and the imageing sensor produced.In cmos image sensor, each pixel (Pixel) is converted to the electronic signal storage with the light signal that utilizes photodiode that the corresponding part at subject is copied, and the quantity of electric charge that will show in the mode of the electron number ratio with accumulation is converted to the mode of exporting after voltage signal.
Imageing sensor mainly is divided into the cmos image sensor of use complementary type-pattern (CMOS) technology and uses charge coupled cell (CCD; Charge Coupled Device) ccd image sensor of technology, above-mentioned two parts all utilize semiconductor technology and prepare.
Cmos image sensor as above is to be widely used in multiple electronic product, for example, mobile phone (Mobile Phone), personal computer (PC, the Personal Computer) device (Device) of camera (Camera), video capture machine and digital filming machine etc.
Cmos image sensor is with respect to be used as the CCD of imageing sensor in the past, type of drive is simpler, signal processing circuit (Signal Processing Circuit) can be accumulated on a chip, thereby can realize SOC (system on a chip) (SoC, System On Chip), therefore, can realize the miniaturization of module.And, owing to can use the CMOS technology of tissue (Set-up) in the past compatiblely, thereby, have advantages of the unit price of reduction, be in thus the state that it need to more and more increase.
Generally, as digital camera, field camera and realize the Portable device of camera function, the filming apparatus that comprises imageing sensor utilizes imageing sensor to take the image that enters by camera lens and obtains picture signal.And, its picture signal is converted to the digital image data at aqueous picture, to preview (preview) picture, opens demonstration.Previewing under the state that image shows, the key if the end user trips (shutter key), view data is by image compression, thereby is stored as the photograph data.
Fig. 1 is the structure chart about the filming apparatus that comprises imageing sensor in the past.
Existing filming apparatus comprises transducer 10 and video tape recorder 20.At this, transducer 10 comprises imageing sensor 11, light-emitting component 12, imageing sensor driver 13, pyroelectric infrared sensor 14(Pyroelectric Infrared Sensor; Below be called ' pir sensor ') and pir sensor driver 15.And video tape recorder 20 consists of the digital video recorder that comprises hard disk 21.
And light-emitting component 12 is by light-emitting diode (LED; Light Emitting Diode) or infrared ray (IR; Infrared) light-emitting diode (LED) forms, and infrared light sources is output in outside.
The driving of imageing sensor driver 13 control chart image-position sensors 11, after changing the image that obtains by imageing sensor 11, to video tape recorder 20 output image output signals.
Recently, a lot of conversion (conversions) products in conjunction with pir sensor 14 and imageing sensor 11 that gone on the market, existing filming apparatus carrys out having or not of human body by the detection of pir sensor 14 as above.
For example, when pir sensor 14 is applied to guard system,, if detect having or not of human body or animal from pir sensor 14, by imageing sensor 11, image is stored in hard disk 21, if confirm the existence of human body or animal, outside generates warning tones.
Existing filming apparatus as above also comprises imageing sensor 11 other pir sensor 14 in addition in order to detect having or not of human body or animal.Thereby, should be provided with for the circuit of the detection of the picture output signal between transducer 10 and video tape recorder 20 with for detection of the circuit of pir sensor detection signal, and two circuits.
Therefore, exist the expense that realizes of the camera system comprise imageing sensor to increase, and with various lines, increase, thus problem that can not the simple realization camera system.
On the other hand, the hot-wire transducer device is the device that has or not that the variation that utilizes infrared ray to detect its value judges the human body in guarded region.
Hot line sensing device as above, according to its operating principle, is divided into active and type hand.Active hot-wire transducer device is in determined location, with the fixing place of prescribed direction, optical receiver and light projector is set respectively, when optical receiver receives the infrared ray that radiates from light projector, if insert object between optical receiver and light projector, the infrared detection of optical receiver disappears, and the device of detector.
And type hand hot-wire transducer device is that the pyroelectric infrared sensor with wide visual field angle only is set, if this angle of visual field of human body proximity, transducer detects corresponding infrared ray and generates the device of alarm.
Utilize the device of the infrared detection mode of type hand as pir sensor 14 conducts of motion detection sensor, utilize the transducer that claims again infrared ray sensor.
Infrared ray sensor as above is made responsive reaction to variations in temperature on every side, thereby misoperation is many.And, can not be arranged on as the incandescent lamp bulb of the high heat of generation of the inside that is formed at the illumination housing or the light fixture of fluorescent lamp and nearby use.
On the other hand, extensively utilize recently the camera system of using etc. as monitoring to be provided with motion (Motion) measuring ability in terminal market,, according to having or not of motion, cutting off the function of the power supply (Power) etc. of video output terminals for power consumption.That is, be provided with in the camera system as in nonmotile situation, can disconnect the several functions of application motion detection of function of the power supply of video output terminals.
Existing monitoring camera system, utilize IR-LED(Infrared Light Emitting Diode, infrared light-emitting diode in low-light (level)) carry out recognition object.But, owing to differentiating the motion of object under the state of always opening IR-LED in low-light (level), thereby be restricted aspect minimizing power consumption phenomenon.
Particularly,, in order to carry out motion detection, the illumination of image certain level be is maintained,, in order to keep definitely the illumination of image under the low-light (level) state, the illumination of IR-LED level definitely be is transferred to, thereby, be restricted aspect minimizing power consumption phenomenon.
Summary of the invention
Technical problem
The present invention proposes in order to solve existing issue as above, and its purpose is as follows.
First, IR-LED(Infrared Light Emitting Diode is set simultaneously in imageing sensor inside, infrared light-emitting diode) control function and motion (Motion) measuring ability, carry out only to open IR-LED when the work of motion detection function, thereby can reduce unnecessary power consumption phenomenon.
The second, be not provided with independent pir sensor, and by imageing sensor, detect motion (Motion), thereby can only utilize motion that an imageing sensor carrys out human body (or animal) whether.
The 3rd, whether the movement that comes human body, animal or object by imageing sensor whether, and decides the having or not of output of picture signal according to motion detection.
The 4th, in the situation that from imageing sensor, apply picture output signal, picture signal is stored in storage device,, in the situation that do not apply picture output signal, be converted to energy-saving mode, thereby can reduce power consumption.
The 5th, do not comprise independent pir sensor also can carry out from imageing sensor motion detection can, thereby can make system simplification, and can reduce the unit price of system.
The 6th, utilize illuminance transducer to judge illumination in low-light (level), the output infrared light sources detects motion, thereby can solve the weakness in low-light (level).
The means of dealing with problems
Imageing sensor, is characterized in that according to an embodiment of the invention, comprising: analog-digital converter, and it carries out signal to the illumination intensity signal that applies from illuminance transducer and processes; Control unit, it receives digital signal and the picture signal that applies from analog-digital converter and carries out signal and process; Motion detector, it detects motion and out-put supply cut-off signal and LED control signal from the output image of control unit; Digital analog converter, whether its output image with control unit is converted to analog signal, and according to power disconnect signal, be activated and optionally export the picture output signal that is converted into analog signal; And luminous controling unit, it optionally controls the opening/closing action of illuminating part according to LED control signal.
And, comprise according to an embodiment of the invention the filming apparatus of imageing sensor, it is characterized in that, comprising: illuminance transducer, it detects illuminance information, illuminating part, the grade of itself and illuminance information is moved accordingly, and according to the action control signal, carries out the opening/closing action, and imageing sensor, it detects motion from the picture signal that is applied by camera lens, according to whether being checked through motion, carry out optionally output image output signal, and output action control signal optionally; Imageing sensor comprises: analog-digital converter, and it carries out signal to the illuminance information that applies from illuminance transducer and processes; Control unit, it receives from digital signal and the picture signal of analog-digital converter input and carries out signal and process; Motion detector, it detects motion and out-put supply cut-off signal and LED control signal from the output image of control unit; Digital analog converter, whether its output image with control unit is converted to analog signal, and according to power disconnect signal, be activated and optionally export the picture output signal that is converted into analog signal; And luminous controling unit, it optionally controls the opening/closing action of illuminating part according to LED control signal.
The effect of invention
The invention provides following effect.
First, be provided with simultaneously IR-LED(Infrared Light Emitting Diode in the inside of imageing sensor, infrared light-emitting diode) control function and motion (Motion) measuring ability, come only to open IR-LED when carrying out motion detection function, thereby can reduce unnecessary power consumption.
The second, be not provided with independent pir sensor, detect motion (Motion) by imageing sensor, thereby only utilize the action that imageing sensor also can human body (or animal) to have or not.
Whether the 3rd, whether the movement by imageing sensor human body, animal or object, decide the output of picture signal to have or not according to detecting, thereby can reduce the power consumption flow that drives according to image signal output.
The 4th, whether decide the picture signal of storage device whether to store according to the output of the picture signal of imageing sensor, thereby can reduce the power consumption flow according to storage, and can use at leisure the memory space of storage device.
The 5th, do not comprise independent pir sensor and carry out motion detection function from imageing sensor, thereby, have the effect that makes system simplification and reduce unit price.
The 6th, be not provided with independent pir sensor, thereby, the distribution of relevant pir sensor can be reduced, thereby the setting of camera system product can be easily carried out.
The 7th, utilize illuminance transducer to judge illumination, open infrared light-emitting diode under low-light (level), thereby the effect of the weakness that solves the motion detection under low-light (level) can be provided.
And, the preferred embodiments of the present invention propose to be exemplified as purpose, so long as the general technical staff of the technical field of the invention just can carry out multiple revision, change, replacement and additional by technological thought and the scope of appending claims, and, be understood as revision as above, change etc. and belong to the scope of claims.
Description of drawings
Fig. 1 is the relevant structure chart that comprises the filming apparatus of existing imageing sensor.
Fig. 2 is the structure chart of the relevant filming apparatus that comprises imageing sensor according to the embodiment of the present invention.
Fig. 3 is the detailed structure view of the imageing sensor of relevant Fig. 2.
Fig. 4 is the figure for the imageing sensor control method of key diagram 3.
Embodiment
Below, with reference to accompanying drawing, embodiments of the invention are elaborated.
Fig. 2 is the structure chart of the relevant filming apparatus that comprises imageing sensor according to the embodiment of the present invention.
Embodiments of the invention comprise filming apparatus 100 and storage device 200.Filming apparatus 100 comprises illuminance transducer 110, camera lens 120, light-emitting component 130 and imageing sensor 140.And storage device 200 comprises synchronizing indicator 210 and memory 220.
At this, the preferred digital video recorder by the storage digital image of storage device 200 etc. forms.And memory 220 preferably includes the storage medium of hard disk etc.
At first, the illuminance information around illuminance transducer 110 detects, detected illuminance information is output in imageing sensor 140 in illuminance transducer 110.
And, imageing sensor 140 in the image input signal that applies from camera lens 120 according to the detection of motion whether, optionally control light-emitting component 130 the opening/closing action.
Recently, for improve in terminal market be used for monitoring with or the raising of the low-light (level) photosensitivity of the camera (Camera) of door-phone (Door phone) etc., with LED(Light Emitting Diode, light-emitting diode) or IR-LED(Infrared Light Emitting Diode, infrared light-emitting diode) for fundamental, use.That is,, for the illumination according to surrounding environment is controlled light-emitting component 130, use illuminance transducer 110.
And imageing sensor 140 is taken subjects by camera lens 120, will simulate or the output signal of digital video image is output in storage device 200.
That is, imageing sensor 140 will be exported after being converted to by the optical imagery (that is, optical subject signal) that outside camera lens 120 is inputted the signal of telecommunication.At this, the signal of telecommunication of every frame (Frame) output is called two field picture.
And light-emitting component 130 is by light-emitting diode) (LED; Light Emitting Diode) or infrared ray (IR; Infrared) light-emitting diode (LED) forms, thereby infrared light sources can be output in outside.
And in embodiments of the invention, the action of imageing sensor 140 human body, animal or object is output in storage device 200 with picture output signal.
For example, in the time of in imageing sensor 140 is applied to safety system,, if having or not of human body or animal detected in imageing sensor 140, image is stored in storage device 200, if confirm the existence of human body or animal, warning tones occurs externally.
Synchronizing indicator 210 detects synchronizing signal the analog picture signal that applies from imageing sensor 140.Analog picture signal all comprises synchronizing signal in every frame.If detect synchronizing signal as above, picture signal is inputted in expression.
Therefore, synchronizing indicator 210 in the situation that detect synchronizing signal from the picture signal that imageing sensor 140 applies, is identified as and detects motion, and picture signal is stored in memory 220.
Fig. 3 is the detailed structure view of the imageing sensor of relevant Fig. 2.
, at this, be located at the analog-digital converter 141(ADC of the inside of imageing sensor 140; The analog information of the illuminance information that Analog-Digital Converte) correspondence is applied from illuminance transducer 110 is converted to digital signal, is output in control unit 142.
And, control unit 142 will be output in from the digital signal that analog-digital converter 141 applies luminous controling unit 145, and control the picture signal of the subject of taking from the camera lens 120 of imageing sensor 140 according to internal control signal, thereby be output in motion detector 143.
And, be not provided with independent pir sensor in embodiments of the invention, and can comprise that motion detector 143 carrys out the action of human body or animal at imageing sensor 140.And, can by imageing sensor 140 detect in pir sensor be the object that can not detect movement whether.
That is, motion detector 143 detects having or not power disconnect signal P_OFF being output in digital analog converter 144 of motion the picture signal that applies from control unit 142, and LED control signal LED_CON is output in luminous controling unit 145.
And digital analog converter 144, according to the control of power disconnect signal P_OFF, will be converted to analog signal from the digital image signal that control unit 142 applies, thereby picture output signal optionally will be output in storage device 200.
And, luminous controling unit 145 reaches the LED control signal LED_CON that applies from motion detector 143 according to the illuminance information that applies from control unit 142, control the operate condition of illuminating part 130, and according to level of illumination and motion detection whether, optionally control the opening/closing action of the light-emitting component that is located at illuminating part 130.
At this, illuminating part 130 preferably includes light-emitting diode (LED; Light Emitting Diode) or infrared ray (IR; Infrared) light-emitting component of light-emitting diode (LED) etc.
And luminous controling unit 145 storages are used for the action message of the opening/closing action of control illuminating part 130.
Thus, luminous controling unit 145, according to the action message from motion detector 143 leaders, will be output in illuminating part 130 for the action control signal of the action of controlling illuminating part 130.
Illustrate that with reference to Fig. 4 the course of action with imageing sensor 140 of structure as mentioned above is as follows.
When motion detector 143 detects motion the picture signal that applies from control unit 142, (for example do not activate, the grade of logic low) power disconnect signal P_OFF is output in digital analog converter 144, activate (for example, the high grade of logic) LED control signal LED_CON and be output in luminous controling unit 145.
In embodiments of the invention, the output that whether is decided digital analog converter 144 by the activation of P_OFF according to the power disconnect signal from motion detector 143 output whether.
That is, detect from picture signal in the situation of motion, 144 one-tenth operate conditions of digital analog converter carry out former state ground output image signal, and 145 one-tenth operate conditions of luminous controling unit are exported be used to the control signal of opening illuminating part 130.
At this moment, digital analog converter 144, only in the situation that apply the power disconnect signal P_OFF that does not activate from motion detector 143, is output in storage device 200 with picture output signal.
On the contrary, motion detector 143 is not in the situation that motion detected from the picture signal that control unit 142 applies, (for example activate, the grade that logic is high) power disconnect signal P_OFF is output in digital analog converter 144, do not activate (for example, the grade of logic low) and be output in luminous controling unit 145.
Namely, do not detect from picture signal in the situation of motion, the power supply that is supplied in digital analog converter 144 according to power disconnect signal P_OFF is disconnected, thus output image signal not, and luminous controling unit 145 outputs are used for disconnecting the control signal of illuminating part 130.
And the synchronizing indicator 210 of storage device 200 detects synchronizing signal the analog picture signal that applies from digital analog converter 144.
That is,, in the situation that from digital analog converter 144, apply analog picture signal, the situation of motion detected in expression motion detector 143.Therefore, synchronizing indicator 210 detects synchronizing signal analog picture signal is stored in memory 220.
On the contrary,, in the situation that from digital analog converter 144, do not apply analog picture signal, be illustrated in motion detector 143 and the situation of motion do not detected, thereby storage device 200 moves with energy-saving mode.Owing to synchronizing signal can not being detected in synchronizing indicator 210, thereby in energy-saving mode, analog picture signal is not stored in memory 220.
After this, 210 in the situation that this applies picture signal from digital analog converter 144 to synchronizing indicator, and storage device 200 finishes energy-saving mode, and picture signal is stored in memory 220.
And, according to the activation of the LED control signal LED_CON from motion detector 143 output whether, whether decide the output of luminous controling unit 145 in embodiments of the invention.
With reference to Fig. 4, motion detector 143 is the detection of vertical synchronizing signal the picture signal that applies from control unit 142.
At this, motion detector 143 is not that corresponding every frame (Frame) is carried out the motion detection action, and corresponding every frame is only carried out motion detection action once.For example, motion detector 143 judge motion according to the T3 zone of Fig. 4 detection whether.At this moment, the operating distance of motion detector 143 detection motions is set according to the information of the image of inputting.
And the operating space the general pattern of T1 is moved as detection in motion detector 143, can make illuminating part 130 always open in low-light (level).For this reason, motion detector 143 activates LED control signal LED_CON for the high-grade luminous controling unit 145 that is output in, and power disconnect signal P_OF is not activated and is output in digital analog converter 144 for inferior grade.
That is, detect under the general pattern of state of motion, activate output after LED control signal LED_CON in motion control unit 145, luminous controling unit 145 is controlled to illuminating part 130 to become open mode in low-light (level).
And motion detector 143 in the situation that motion do not detected during frame (Frame),, in order to reduce power consumption, is converted to power-down mode (Power down mode) as the T2 zone.
For example, motion detector 143 in the situation that motion do not detected during the T4 zone of Fig. 4, enters into power-down mode as T2.At this moment, motion detector 143 frame period that enters the T4 of power-down mode can be set according to end user's intention..
And, in the power-down mode zone of T2, LED control signal LED_CON is not activated as inferior grade is output in luminous controling unit 145, power disconnect signal P_OFF is activated as after high-grade and is output in digital analog converter 144.
At this moment, in the power-down mode zone of T2, LED control signal LED_CON does not activate as the inferior grade state always, but when motion detection was moved, in order to improve illumination, take frame as interval, switching (Toggling) became high-grade and inferior grade.
Namely, in power-down mode, in order to keep suitable illumination in the frame that starts in motion detection action, motion detector 143 only is controlled to state of activation with LED control signal LED_CON in the frame of 1 frame before the motion detection action executing and motion detection action executing as A, B.
That is,, in the situation that in power-down mode, LED control signal LED_CON applies with state of activation,, in order to carry out the motion detection action in motion detector 143, express image illumination and should reach the situation of certain level.Thereby luminous controling unit 145 is opened illuminating part 130.
On the contrary,, in the situation that in power-down mode, LED control signal LED_CON applies with state of activation not, do not carry out the motion detection action in motion detector 143, come the illumination of presentation video can not reach the situation of certain level yet.Thereby luminous controling unit 145 is closed illuminating part 130.
After this, detect from motion detector 143 in the situation of motion, the terminal node power mode is also opened illuminating part 130 at this.
On the other hand, the mode that detects motion from motion detector 143 as above can have several.
For example, through following process: from the process of control unit 142 received frame images; The two field picture of the existing frame that generate to receive and the process of the differential image between the two field picture of frame before; The differential image projection is obtained the process of projection data at reference axis; Process from projection data characteristic information extraction; The process of the track of analytical characteristic information; And, utilize the track ribbon of having analyzed to obtain the process of the movable information of subject.
Describe its course of action in detail as follows.
At first, receive from camera lens 120 (perhaps, successively non-) two field picture successively by control unit 142.The two field picture that receives may be coloured image or black and white image.In coloured image, but former state application coloured image or be converted to black and white image.In black and white image, has the effect of the integral operation amount that can reduce motion detector 143 in the process of the motion that detects subject.
The two field picture that is input into motion detector 143 is stored in video memory.When the frame that receives is assumed to be n frame, the two field picture of the frame (n-1 frame) before in video memory, storage is equivalent to.
Utilization is input into the existing two field picture (n two field picture) of motion detector 143 and from the two field picture (n-1 frame) before that video memory reads, generates differential image.For arbitrary location of pixels, the difference of the pixel value before two two field pictures is set as pixel value in differential image.
When generating differential image, can append and carry out cropping (Cropping) or covering the work of (Masking) etc. of two field picture according to the motion detection amplitude.At this, the motion detection amplitude represents the direction of motion, the size etc. of moving of motion detector 143 detectable subjects according to an embodiment of the invention.
143 pairs of differential image projections as above of motion detector (Projection) are at reference axis.The differential image projection on reference axis, thereby obtain the data for projection of corresponding reference axis.
And, the data based predefined method of projection and in groups, the difference by each group of having distinguished generates characteristic information.The characteristic information that generates is stored in the characteristic information memory, is applied to obtain the movable information aspect of track etc.
That is, judge according to the track of the characteristic information of time process whether have predefined form (for example, sinusoidal (sine) waveform) based on characteristic information, thereby determine that the motion of subject has or not.In the situation that have predefined form, if its size is judged as centered by detection reference and to specific direction and moves greater than the critical value of regulation.
And, from motion detector 143, can detect as follows motion.
After detecting light, exports with the signal of telecommunication subject in the array of pixels of the imageing sensor 140 that is provided with pixel with the ranks form.Motion detector 143 is chosen as ten units with the signal of telecommunication of array of pixels.
And, the signal of telecommunication that is chosen as ten units is compared to be output as the digital data of 1 bit with reference voltage.After this, store the digital data of 1 bit temporarily, and frame and the present frame before of relatively more interim storage.Its comparative result, calculate the number of " 1 " or " 0 " that are included in data, and this and predefined fiducial value are had or not to relatively judging to move.
And motion detector 143 can detect motion according to following mode.
At first, the image graph picture that input is converted to digital data by analog-digital converter 141, and is output as present frame data.Motion detector 143 will be gone pixel value to be stored as the reference frame data after ten Conversion of measurement unit orders.And, the existing frame data of movement images and with the storage the reference frame data calculate correlated count and store its result.
After this, the maximum of retrieval correlated count, and corresponding its machine motion vector of output.And, utilize the machine motion vector to ask the motion vector of whole image.
Embodiments of the invention as above are only in the situation that exist the detection of picture signal, picture signal is stored in memory 220, thereby, can prevent loads is stuck in the phenomenon of memory 220, the memory space of memory 220 can be used at leisure, and the life-span of the product of storage device 200 can be helped to extend.And, can reduce the flow of the power consumption according to I/O, driving and storage of picture signal.
And embodiments of the invention detect illumination by illuminance transducer 110, under the environment of the dark of low-light (level), by illuminating part 130, open light-emitting component.Therefore, from the image of imageing sensor 140 receptions about motion, and by motion detector 143, detect motion.
And, embodiments of the invention low according under, LED control signal LED_CON only opens illuminating part 130 under the state that activates, thereby can reduce power consumption and the caloric value of the system that illuminating part 130 causes.
Particularly, embodiments of the invention will be located at imageing sensor 140 simultaneously according to the motion detection function of motion detector 143 with according to the control function of the illuminating part 145 of luminous controling unit 145, come only in the situation that detect motion, to open illuminating part 130, thereby can reduce unnecessary power consumption phenomenon.
That is, embodiments of the invention are closed illuminating part 130 in the frame of not carrying out motion detection function (Frame), and only open illuminating part 130 in the frame of carrying out motion detection function, thereby can reduce power consumption and caloric value based on illuminating part 130.
Embodiments of the invention as above can be applicable to closed-circuit television (CCTV; Closed Circuit Television), the machine of taking the photograph (Door camera), digital filming machine (digital camera), the field camera (camcorder) of digital video recorder (DVR, Digital Video Recoder), door or be attached to the image device of the camera etc. of portable communication.
Claims (16)
1. an imageing sensor, is characterized in that,
Comprise:
Analog-digital converter, it carries out signal to the illumination intensity signal that applies from illuminance transducer and processes;
Control unit, it receives digital signal and the picture signal that applies from above-mentioned analog-digital converter and carries out signal and process;
Motion detector, it detects motion and out-put supply cut-off signal and LED control signal from the output image of above-mentioned control unit;
Digital analog converter, whether its output image with above-mentioned control unit is converted to analog signal, and according to above-mentioned power disconnect signal, be activated and optionally export the picture output signal that is converted into above-mentioned analog signal; And
Luminous controling unit, it optionally controls the opening/closing action of illuminating part according to above-mentioned LED control signal.
2. imageing sensor according to claim 1, it is characterized in that, in the situation that above-mentioned motion detected, activate above-mentioned power disconnect signal and export above-mentioned picture output signal, do not activate above-mentioned LED control signal and export be used to the control signal of opening above-mentioned illuminating part.
3. imageing sensor according to claim 1, it is characterized in that, in the situation that above-mentioned motion do not detected, activate above-mentioned power disconnect signal and block the output of above-mentioned picture output signal, do not activate above-mentioned LED control signal and export be used to the control signal of closing above-mentioned illuminating part.
4. imageing sensor according to claim 1, is characterized in that, above-mentioned motion detector detects synchronizing signal from above-mentioned picture signal, and the frame of corresponding every both determined number is from the once above-mentioned motion of above-mentioned synchronization signal detection.
5. imageing sensor according to claim 1, is characterized in that, above-mentioned motion detector detects synchronizing signal from above-mentioned picture signal, in the situation that both motion do not detected from above-mentioned synchronizing signal the image duration of determined number, is converted to power-down mode.
6. imageing sensor according to claim 5, is characterized in that, when above-mentioned power-down mode, above-mentioned motion detector is 1 frame before carrying out the motion detection action and carry out in the frame of motion detection action and optionally activate LED control signal and output only.
7. a filming apparatus that comprises imageing sensor, is characterized in that,
Comprise:
Illuminance transducer, it detects illuminance information,
Illuminating part, the grade of itself and above-mentioned illuminance information is moved accordingly, and according to the action control signal, carries out the opening/closing action, and
Imageing sensor, it detects motion from the picture signal that is applied by camera lens, carry out optionally output image output signal according to whether being checked through motion, and optionally export above-mentioned action control signal;
Above-mentioned imageing sensor comprises:
Analog-digital converter, it carries out signal to the above-mentioned illuminance information that applies from above-mentioned illuminance transducer and processes;
Control unit, it receives from digital signal and the picture signal of above-mentioned analog-digital converter input and carries out signal and process;
Motion detector, it detects motion and out-put supply cut-off signal and LED control signal from the output image of above-mentioned control unit;
Digital analog converter, whether its output image with above-mentioned control unit is converted to analog signal, and according to above-mentioned power disconnect signal, be activated and optionally export the above-mentioned picture output signal that is converted into above-mentioned analog signal; And
Luminous controling unit, it optionally controls the opening/closing action of illuminating part according to above-mentioned LED control signal.
8. the filming apparatus that comprises imageing sensor according to claim 7, it is characterized in that, in the situation that above-mentioned motion detected, do not activate above-mentioned power disconnect signal and export above-mentioned picture output signal, activate above-mentioned LED control signal and make above-mentioned illuminating part become open mode.
9. the filming apparatus that comprises imageing sensor according to claim 7, it is characterized in that, in the situation that above-mentioned motion do not detected, activate above-mentioned power disconnect signal and block the output of above-mentioned picture output signal, do not activate above-mentioned LED control signal and make above-mentioned illuminating part become closed condition.
10. the filming apparatus that comprises imageing sensor according to claim 7, is characterized in that, above-mentioned motion detector detects synchronizing signal from above-mentioned picture signal, and the frame of corresponding every both determined number is from the once above-mentioned motion of above-mentioned synchronization signal detection.
11. the filming apparatus that comprises imageing sensor according to claim 7, it is characterized in that, above-mentioned motion detector detects synchronizing signal from above-mentioned picture signal, in the situation that both motion do not detected from above-mentioned synchronizing signal the image duration of determined number, be converted to power-down mode.
12. the filming apparatus that comprises imageing sensor according to claim 11, it is characterized in that, when above-mentioned power-down mode, above-mentioned motion detector is 1 frame before carrying out the motion detection action and carry out in the frame of motion detection action and optionally activate LED control signal and output only.
13. the filming apparatus that comprises imageing sensor according to claim 7, is characterized in that, also comprises the storage device of the above-mentioned picture output signal that applies from above-mentioned imageing sensor for storage.
14. the filming apparatus that comprises imageing sensor according to claim 13, it is characterized in that, above-mentioned storage device detects synchronizing signal from the above-mentioned picture output signal that is applied by above-mentioned imageing sensor, and only in the situation that the above-mentioned picture signal of above-mentioned synchronizing signal storage detected.
15. the filming apparatus that comprises imageing sensor according to claim 7 is characterized in that above-mentioned illuminating part comprises infrared light-emitting diode.
16. the filming apparatus that comprises imageing sensor according to claim 7 is characterized in that above-mentioned illuminating part comprises light-emitting diode.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR10-2011-0015149 | 2011-02-21 | ||
| KR1020110015149A KR101262745B1 (en) | 2011-02-21 | 2011-02-21 | Image sensor and photographing apparatus having the same |
| PCT/KR2012/001255 WO2012115408A2 (en) | 2011-02-21 | 2012-02-20 | Image sensor and photographing apparatus including same |
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| Publication Number | Publication Date |
|---|---|
| CN103404125A true CN103404125A (en) | 2013-11-20 |
| CN103404125B CN103404125B (en) | 2016-08-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201280008836.5A Active CN103404125B (en) | 2011-02-21 | 2012-02-20 | Imageing sensor and include the filming apparatus of this imageing sensor |
Country Status (3)
| Country | Link |
|---|---|
| KR (1) | KR101262745B1 (en) |
| CN (1) | CN103404125B (en) |
| WO (1) | WO2012115408A2 (en) |
Cited By (2)
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| CN105025228A (en) * | 2015-07-22 | 2015-11-04 | 深圳市万姓宗祠网络科技股份有限公司 | Method for recording video and images continuously based on picture states |
| CN108718393A (en) * | 2018-08-03 | 2018-10-30 | 上海晔芯电子科技有限公司 | A kind of cmos image sensor and its monitoring method |
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| KR102116090B1 (en) * | 2013-09-27 | 2020-05-27 | 한화테크윈 주식회사 | Camera compressing data of moving image |
| KR102074385B1 (en) * | 2013-09-30 | 2020-02-06 | 한국전자통신연구원 | Control apparatus and method for providing control signal thereof |
| KR102290287B1 (en) | 2014-10-24 | 2021-08-17 | 삼성전자주식회사 | IMAGE SENSOR GENERATING IMAGE SIGNAL AND PROXIMITY SIGNAL simultaneously |
| US20170193782A1 (en) * | 2015-12-30 | 2017-07-06 | Google Inc. | Passive infrared systems and methods that use pattern recognition to distinguish between human occupants and pets |
| KR20180104970A (en) * | 2017-03-14 | 2018-09-27 | 엘지전자 주식회사 | Terminal and method of controlling the same |
| CN109287052A (en) * | 2018-11-07 | 2019-01-29 | 泉州思力科电子科技有限公司 | A kind of control method of lamp switch chip and the lamp switch chip |
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| KR20010097017A (en) * | 2000-04-19 | 2001-11-08 | 박성철, 주한용 | Setting method for detecting motion in the security system |
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Also Published As
| Publication number | Publication date |
|---|---|
| WO2012115408A2 (en) | 2012-08-30 |
| KR101262745B1 (en) | 2013-05-10 |
| WO2012115408A3 (en) | 2012-11-29 |
| CN103404125B (en) | 2016-08-17 |
| KR20120095681A (en) | 2012-08-29 |
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