CN101494736A

CN101494736A - Filming system

Info

Publication number: CN101494736A
Application number: CNA2009100776401A
Authority: CN
Inventors: 杨立群; 谢国琴; 周阿朵
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-02-10
Filing date: 2009-02-10
Publication date: 2009-07-29
Anticipated expiration: 2029-02-10
Also published as: CN101494736B

Abstract

The invention discloses a shooting system, which includes a data signal processor, a plurality of image pickup units, a time schedule controller and a data transfer unit, wherein, the data signal processor processes the data signals come from the image pickup units and outputs the data signals through the data transfer unit; under the control of the time schedule controller, the data signal processor only processes data signals come from one image pickup unit at the same time. The shooting system may also include a data storage unit. The image pickup units are preferably cameras, and each camera can have various different setting modes to satisfy different application needs. Compared to the prior art, the invention has low cost, simple use, capability of realizing instant shooting to multi-visual fields and/or multi- location under static situation, and broad large-scale reference prospect.

Description

A kind of camera system

Technical field

The present invention relates to a kind of camera system, relate in particular to a kind of camera system that cooperates a plurality of image pickup units to take by the individual data signal processor.

Background technology

As shown in Figure 1, traditional camera system adopts single DSP (Digital signal processor, data signal processor) join a single image pickup unit and take, data-signal is directly done continuously or noncontinuity output by data transmission unit output or by data storage element.

Such camera system exists the visual field single, the problem that can't change.

In order to address this problem, often adopt following technological means to address this problem in the prior art:

Such as, adopt the zoom image pickup unit to replace focusing image pickup units, obtain visual angle, the visual field of variable depth by continuous vari-focus.Although solved the problems referred to above, the zoom image pickup unit costs an arm and a leg, and technical threshold is higher, is unfavorable for large-scale application;

For another example, reverse parts inner setting of image pickup units, by the parts of finding a view of motor-driven or manual mode rotating image pickup unit, thus the conversion visual field.But such solution exists cost higher equally, the problem of convenience deficiency.

In addition, also can obtain the bigger camera system of visual field excursion in conjunction with above-mentioned dual mode.

Another problem that camera system of the prior art exists is to carry out pan-shot to many places.

In order to address this problem, adopt usually in the prior art method that a plurality of camera systems are taken simultaneously to be set in a plurality of places.But the cost that such settling mode brings rises, and managing loaded down with trivial details problem becomes the bottleneck that limits its application.

As seen, can't be provided at the low-cost and easy-to type camera system of under the static situation many visual fields, many places being taken immediately in the prior art.

Summary of the invention

The objective of the invention is to overcome at least problems of the prior art, a kind of camera system is provided, can under static situation, take many visual fields and/or many places by this camera system.

As shown in Figure 2, camera system of the present invention comprises a DSP, a plurality of (two or more) image pickup units, time schedule controller, data transmission unit and data storage element optionally.

The present invention utilizes the efficient disposal ability of DSP to different data streams, by time schedule controller described DSP is carried out time-sharing multiplex, reduced the use number of DSP in the system, not only reduced effectively and become to produce cost, improve the service efficiency of device, also reduced many unnecessary maintenance and management costs.

The principle summary of the invention described above can be achieved by following working method:

For example, each image pickup units of hardware setting is started working when receiving the pulse signal of characteristic frequency or characteristic frequency section, quits work when receiving the pulse signal of other frequencies; Time schedule controller is programmed, make it to discharge successively the pulse signal of different frequency according to the time interval of setting; The image pickup units of the frequency correspondence of each activating pulse signal and this signal enters operating state, and the remaining image pickup unit then quits work.As seen, described DSP only handles the data of an image pickup units at synchronization.

Be appreciated that when the described time interval is longer,, can realize the effect that many places are taken continuously such as 5 seconds; When the described time interval more in short-term, such as 0.1 second, can realize approaching the effect of many places with pan-shot constantly.

The described time interval can be set flexibly according to practical application request.Along with the development of modern electronic technology, the disposal ability of DSP is maked rapid progress, and dwindling of its minimum treat time interval can greatly promote the effect of " with pan-shot constantly ".

In addition, as mentioned above, camera system of the present invention can not comprise data storage element, directly by data transmission unit data is exported, such as the display that exports Local or Remote to, external data storage or the like.

Image pickup units of the present invention can be a cameras with fixed focus, or has the cameras with fixed focus of different focal, or zoom camera.Image pickup units of the present invention can work in visible light and/or infrared and/or the ultraviolet band.

A plurality of image pickup units of the present invention can be arranged at same direction or different directions, is arranged at same place or different location.

Camera system of the present invention also can a plurality of couplings, such as, use a plurality of described camera systems, and integrate each data signal processor, the data that come from each data signal processor are unified to handle or management by extra data connection and control device etc.

Compare with prior art, it is low that the present invention has a cost, uses simple outstanding advantage, can be implemented under the static situation function that many visual fields and/or many places are taken immediately, has the prospect of quoting on a large scale widely.

Description of drawings

Fig. 1 represents the camera system of prior art;

Fig. 2 represents camera system of the present invention;

Fig. 3 represents the camera system of embodiment 2;

Fig. 4 represents the camera system of embodiment 3.

Embodiment

The invention will be further described in conjunction with the accompanying drawings below by specific embodiment.

Embodiment 1---and many places are taken

Present embodiment uses camera system as shown in Figure 2, and difference is, uses 20 image pickup units (camera), but does not use data storage element, directly exports display to by data transmission unit.

Generally speaking, when frame frequency surpassed 15FPS, human eye thought that image is continuous.Therefore when the disposal ability of DSP multiply by the product of camera number above 15FPS, the frame frequency that can guarantee each camera made human eye think that the image of each camera is continuously all above 15FPS.Present embodiment simultaneously cooperates 20 camera work as the DSP of 300FPS in the mode of time-sharing multiplex by using disposal ability, keeps continuous images to take.

Image taking or video capture can be carried out to whole building in the different location that described 20 cameras are arranged in the same building, realize monitoring building.

Take all factors into consideration, the cost of present embodiment scheme is lower than the acquisition technical scheme that constructed effect adopted in the prior art.

Embodiment 2---and many visual fields are taken

The angle of visual field of conventional camera system generally is no more than 180 °, even surpass 180 °, also exist picture distortion big, and the lens design difficulty is big, simultaneously the high shortcoming of processing cost.The full visual field monitoring of 360 degree then almost is impossible, shown in Fig. 3 a.

In the present embodiment, shown in Fig. 3 b, four cameras are set in the camera system, roughly,, make that each camera in the system was taken successively with the extremely short time interval by control to single DSP equably respectively towards four direction, and show simultaneously after the output of the image after will taking, reached the effect that several cameras are almost worked simultaneously, more easily realized little distortion, the monitoring of full visual field.Although there is the monitoring dead band, the dead band is less, also can be by enlarging the scope that the visual angle dwindles the dead band.

The present embodiment system can be applied to the monitoring than large space preferably, such as the market, and supermarket etc.

Embodiment 3---optical zoom

As shown in Figure 4, present embodiment uses three cameras with different focal, and described three cameras are set up in parallel, and close mutually.Because the spacing between each camera is very little, can ignore with respect to its visual field, therefore can think that three cameras are positioned on the same point, also promptly three visual fields have common summit.By DSP whether each camera work is changed, can be made the present embodiment camera system realize optical zoom fast.Although this optical zoom is discontinuous, in the practical application, the usual focal length relative fixed of using, therefore the focal length of these three cameras is set to the function that the usual focal length that uses can realize being similar to continuous vari-focus.

The more important thing is that the cost of optical zoom camera is about the cost sum total of 4 similar cameras with fixed focus, therefore escapable cost under the situation that two grades of zooms or third gear zoom are set in this way satisfies simultaneously functional need preferably.

Claims

1. a camera system is characterized in that, comprises a data signal processor, a plurality of image pickup units, time schedule controller and data transmission unit; Described data signal processor is handled and is exported described data-signal from the data-signal of described image pickup units and by data transmission unit; Under the control of described time schedule controller, described data signal processor is only handled data-signal from an image pickup units at synchronization.

2. camera system as claimed in claim 1 is characterized in that described system also comprises data storage element, and described data storage element is connected with described data transmission unit data with described data signal processor respectively.

3. camera system as claimed in claim 1 or 2, it is characterized in that, described each image pickup units all has different activating pulse signal frequency or frequency band, described time schedule controller discharges the pulse signal of different frequency successively according to the time interval of setting, and the frequency of described this signal of activating pulse signal falls into the image pickup units in the activation frequency scope and closes the remaining image pickup unit.

4. camera system as claimed in claim 3 is characterized in that, described image pickup units is a camera.

5. camera system as claimed in claim 4 is characterized in that, described a plurality of cameras different place that is placed in.

6. camera system as claimed in claim 4 is characterized in that, described camera system comprises four cameras, and described four cameras are respectively towards four direction, overlaps in the visual field of adjacent camera.

7. camera system as claimed in claim 4 is characterized in that, described camera system comprises that two or three have the cameras with fixed focus of different visual angles, and described camera is set up in parallel and is close mutually.

8. as any described camera system of claim 5-7, it is characterized in that the disposal ability of described data signal processor surpasses the product of 15FPS and camera quantity.