CN1200621A - Device for picking-up and controlling picture-informations - Google Patents
Device for picking-up and controlling picture-informations Download PDFInfo
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- CN1200621A CN1200621A CN 97113486 CN97113486A CN1200621A CN 1200621 A CN1200621 A CN 1200621A CN 97113486 CN97113486 CN 97113486 CN 97113486 A CN97113486 A CN 97113486A CN 1200621 A CN1200621 A CN 1200621A
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Abstract
The invention relates to an image pick-up control device which is used for driving an image pick-up device to pick up an external image, including a sensing device which is used for sensing external image and delivering a frequency detection signal according to the light source frequency of the external image, and a control device which is coupled with the sensing device and is used for receiving the frequency detection signal and delivering a control signal according to the frequency detection signal to make the image pick-up device to pick up the external image according to the control signal.
Description
Relevant a kind of capturing images (capture) control device of the present invention, be particularly to a kind of can be synchronous with the light source frequency of capture image, the driving image capturing device captures the control device of image.
Along with making rapid progress of science and technology, the Related product of image processing is also flourish.Traditional capturing images mode, be to utilize image capturing device with the image that is captured, leave video tape in or directly go up and show at display (Monitor), this product only can show under particular machines, or on preserving and use, image is restricted, and as want at present quite general computer, to make treatment of picture, must change via video signal card (video capture card), and the cost of video signal card is quite high, and must be fixed on the computer motherboard, only can on single computer, use.So, directly be applied in computer system and lower-cost image capturing device, promptly developed into the peripheral equipment of a computer, directly connect via the serial or parallel connectivity port slot of computer outside, and with the software-driven reading of data, with acquisition and monitor dynamic image, and the image behind the record can be done follow-up processing, so, not only can save cost, and because of directly connecting, can be used on the different computers, increase the compatibility of this device via serial port.
This kind image capturing device known today is as U.S. Connectix
TMThe Related product QuickCam of company
TMThe black and white image capture device promptly is to utilize the method so that use on computers.Please refer to Fig. 1, the block diagram that it has shown this image capturing device hardware has comprised a control device 100 and an image capturing device 20, and wherein this image capturing device 20 comprises a microprocessor 110, reaches a capture device 120.When control device 100 output one control signal 102 during to microprocessor 110, microprocessor 110 will be made output one drive signal 112 after the set processing according to this control signal, and image capturing device 120 will begin to capture image by drive signal 112 drivings, and it is with the image of acquisition, utilize parallel connectivity port (port) to be connected on the computer, the frequency of its acquisition is the fixed value that machine itself sets.Via the per second fixed number of times scan the acquisition image, can and be stored in the computer system dynamic video signal acquisition, no matter be that the supervision or the processing of video signal data of dynamic broadcast, image all can utilize this device to reach.But, use this to install the view data that is captured, when playing, can produce the phenomenon of flicker (Flicker), probe into its reason, be the frequency problem of acquisition image.For the environment of acquisition image, the fixedly acquisition frequency distance of its light source and image capturing device is too big, no matter be Tai Gao or too low, all will produce the situation of this kind flicker.
For solving the problem of above-mentioned existence, the purpose of this invention is to provide a kind of device for picking-up and controlling picture-informations, particularly relevant for a kind of can be synchronous with the light source frequency of acquisition image, drive the control device of image capturing device acquisition image, so, to the situation of flicker can be not produce, and goodish image effect can be obtained.
For reaching above-mentioned purpose, the invention provides a kind of device for picking-up and controlling picture-informations, capture an external image in order to drive an image capturing device, comprise: a sensing device (photo-sensitive means), in order to this external image of sensing, and export a frequency detecting signal according to the light source frequency of this external image; And a control device, be couple to this sensing device, in order to receiving this frequency detecting signal, and export a control signal according to this frequency signal, use making this image capturing device capture this external image according to this control signal.
And above-mentioned device for picking-up and controlling picture-informations, wherein this sensing device comprises a photo resistance, in order to this external image of sensing, and changes resistance value according to this; And a plurality of divider resistances, being couple to this photo resistance, this photo resistance of mat and these divider resistances form the DC path of a plurality of nodes of a tool, and according to the bias of these nodes, export this frequency detecting signal.
For above-mentioned and other purposes of the present invention, feature and advantage can be become apparent, especially exemplified by a preferred embodiment, and conjunction with figs., be described in detail below:
Accompanying drawing formula brief description;
Fig. 1 shows known a kind of image capturing device hardware block diagram;
Fig. 2 shows a kind of device for picking-up and controlling picture-informations hardware block diagram according to preferred embodiment of the present invention;
Fig. 3 shows a kind of device for picking-up and controlling picture-informations detailed circuit diagram according to preferred embodiment of the present invention; And
Fig. 4 shows the control signal oscillogram of present embodiment output.
Embodiment
Please refer to Fig. 2, it shows a kind of device for picking-up and controlling picture-informations hardware block diagram by preferred embodiment of the present invention, this device 200 comprises a sensing device 210 and a control device 220, in order to be connected to image capturing device 202, this image capturing device comprises a microprocessor 230 and a capture device 240.
The image that this sensing device 210 will capture in order to sensing, and export a frequency detecting signal 212 according to the light source frequency sensing of this external image.And control device 220 is couple to sensing device 210, and when receiving this frequency detecting signal 212, control device 220 can be according to frequency detecting signal 212 outputs one control signal 222.
And the microprocessor 230 in this image capturing device 202 is couple to control device 220, when receiving control signal 220, can do a set processing according to the content of this control signal 220, and export a drive signal 232 to the capture device 240 that couples with it.Capture device 240 will begin to capture extraneous image according to the driving of drive signal 232.And the acquisition characteristics of this image are to drive the acquisition image by sensing device 210 according to the light source frequency of external image.
Please refer to Fig. 3, it shows a kind of device for picking-up and controlling picture-informations detailed circuit diagram according to preferred embodiment of the present invention.Wherein, sensing device 210 is by a photo resistance (CDS) R
2An and and divider resistance R who couples
1Form.This photo resistance (CDS) can be adjusted its resistance value according to the light source of external environment, and with divider resistance R
1Form a DC path, and according to the bias of node A, output frequency detection signal 212.And control device 220 comprises a capacitor C
1, resistance R
3, R
4, operational amplifier LM324, an and diode D
1This control device 220 according to frequency detecting signal 212, be the partial pressure potential of node A, through capacitor C
1, resistance R
3Effect and obtain the partial pressure potential of Node B, via LM324 operational amplifier and resistance R
4Effect and obtain the partial pressure potential of node C, and export a control signal 222, be the partial pressure potential of node C, and after this microprocessor 300 receives this control signal 222, can do computing according to the potential value of this signal, obtaining the drive signal of a correspondence, and drive capture device with the acquisition image.
In the design of image capturing device, photo-sensitive cell (photo sensor), imageing sensor (sensor) CCD (Charged Coupled Device) for example, in the acquisition of continuous pictures, the starting time of its sensitization preferably has consistency, and just photo-sensitive cell (photo sensor) sensitization starting time is if the frequency change of energy and light source reaches synchronously, and the continuous pictures that is captured does not promptly have the situation of flicker.Present embodiment promptly provides the microprocessor 300 that a light source frequency detection signal 222 is given in the image capturing device, and microprocessor 300 is before each picture acquisition, the time that begins with mode detection light source frequency signal cycle of software, after to be checked the measuring, microprocessor promptly begins to start the sensitization action of photo-sensitive cell according to resultant value, so, the acquisition of each picture will be synchronous with light source, do not have the phenomenon of flicker.
And present embodiment is to utilize photo resistance (CDS) R
1Characteristic, its resistance value is different and change along with the shading value of light source, and utilizes operational amplifier (OP) that the variation of resistance value is converted to the variation of voltage, so that different light source frequencies is produced corresponding reaction.Please refer to Fig. 4, it shows the control signal oscillogram of present embodiment output, for example, at indoor light source if with the frequency scintillation of 60HZ, the control signal of present embodiment output, the signal output control signal that will be 8ms with the cycle is given microprocessor, microprocessor is before driving capture device, detect this waveform earlier, when control signal transfers high potential to by electronegative potential (the H point among Fig. 4), microprocessor promptly can open beginning driving capture device acquisition picture, so each picture all can be synchronous with light source, the flicker situation will can not take place, so, and the quality of picture that raising captures that can be a large amount of.
Though the present invention discloses as above with a preferred embodiment; right its is not in order to limit the present invention; anyly have the knack of this operator; without departing from the spirit and scope of the present invention; when can doing a little change and retouching, so protection scope of the present invention is as the criterion when looking the claim scope person of defining of the present invention.
Claims (3)
1. a device for picking-up and controlling picture-informations captures an external image in order to drive an image capturing device, comprising:
One sensing device in order to this external image of sensing, and is exported a frequency detecting signal according to the light source frequency of this external image; And
One control device is couple to this sensing device, in order to receiving this frequency detecting signal, and exports a control signal according to this frequency signal, uses making this image capturing device capture this external image according to this control signal.
2. device for picking-up and controlling picture-informations as claimed in claim 1, wherein, this sensing device comprises a photo resistance, in order to this external image of sensing, and changes resistance value according to this; And a plurality of divider resistances, being couple to this photo resistance, this photo resistance of mat and these divider resistances form the DC path of a plurality of nodes of a tool, and according to the bias of these nodes, export this frequency detecting signal.
3. device for picking-up and controlling picture-informations as claimed in claim 1, wherein, the frequency of this control signal is identical with the frequency of this external image.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97113486 CN1200621A (en) | 1997-05-27 | 1997-05-27 | Device for picking-up and controlling picture-informations |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97113486 CN1200621A (en) | 1997-05-27 | 1997-05-27 | Device for picking-up and controlling picture-informations |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1200621A true CN1200621A (en) | 1998-12-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 97113486 Pending CN1200621A (en) | 1997-05-27 | 1997-05-27 | Device for picking-up and controlling picture-informations |
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| Country | Link |
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| CN (1) | CN1200621A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103491291A (en) * | 2013-09-23 | 2014-01-01 | 深圳市欧珀通信软件有限公司 | Operation reminding method and device for photographing |
-
1997
- 1997-05-27 CN CN 97113486 patent/CN1200621A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103491291A (en) * | 2013-09-23 | 2014-01-01 | 深圳市欧珀通信软件有限公司 | Operation reminding method and device for photographing |
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