CN1450794A - Digital camera capable of automatic momitoring environment change - Google Patents
Digital camera capable of automatic momitoring environment change Download PDFInfo
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- CN1450794A CN1450794A CN 02106292 CN02106292A CN1450794A CN 1450794 A CN1450794 A CN 1450794A CN 02106292 CN02106292 CN 02106292 CN 02106292 A CN02106292 A CN 02106292A CN 1450794 A CN1450794 A CN 1450794A
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Abstract
A digital camera consists of a timing unit for exporting a start up signal at preset time, camera body for catching up current image and to convert it to be a current image parameter, a storage unit for storing image data and control unit being coupled with abovesaid timing unit. The current image is catched by the camera when the camera receives start up signal and then to convert the current image into current image parameter as well as to compare it with the previous one. The current image parameter is stored in the storage unit and to use it to replcace the previous image parameter if the image parameter difference is reached to a preset grade and the current image parameter is only used to replace the previous one if the image parameter difference is not reached to the abovesaid preset grade.
Description
Technical field
The present invention is relevant for a kind of digital camera, and the digital camera that particularly relevant a kind of automatic monitoring of environmental changes utilizes digital camera timing extraction image, and contrasts previous image, if produce the different new images that extract that then store, to reach the method for long term monitoring.
Background technology
In general, be used for the device of security system at present, by a video recording equipment, the image of desiring monitor area is down taken on continuity ground, no matter captured image has no change, is filmed without exception and is stored in the video tape, so continued power is given above-mentioned video recording equipment always, therefore the consumption of electric power is greatly a shortcoming, and major part may all be some identical images of record in the video tape.On the other hand, because general digital camera has had the function of regularly autodyning, for example every several second beats were once clapped once to several hours, when the shooting cycle that sets shorter (several seconds once), it is full to make that memory may store up apace, and can't monitor again.In addition, if the shooting cycle heals big (several hours once), then can't photograph the variation in a few minutes, moreover, and above-mentioned digital camera also can be owing to the state that is in preparation (stand by), and power consumption also can be bigger, so do not have the ability of power saving long term monitoring.But no matter captured image has no change, above-mentioned digital camera can be filmed and be stored in the memory without exception, so the image that is stored in the memory also might be identical, causes the waste of storage space, and when memory is not enough, promptly can't the execution monitoring function.
In view of this, purpose of the present invention, utilize a digital camera periodically just to start automatically every a scheduled time, extract a present image, compare with a previous image,, represent that then environment changes if when above-mentioned present image and previous image differences have reached a predetermined extent, just above-mentioned new image is deposited in the memory, then shutdown; If when above-mentioned present image does not reach predetermined extent with previous image differences, represent that then environment does not change,,, shut down then as the usefulness of contrast next time so above-mentioned present image is replaced above-mentioned previous image.Therefore, the present invention reaches the monitoring of power saving, high-reliability, the time that the prolongation memory is filled with, and the ability of long term monitoring.
Summary of the invention
For reaching above-mentioned purpose, the invention provides the digital camera that a kind of automatic monitoring of environmental changes, comprise a timing unit, a digital camera body, a storage element and a control unit at least.Wherein above-mentioned timing unit in order to every the scheduled time time, is exported an enabling signal.Above-mentioned digital camera body is in order to extract a present image and to convert a present image parameter to.Above-mentioned storage element is in order to store image data.Above-mentioned control unit, after receiving above-mentioned enabling signal, follow a more above-mentioned present shadow parameter picture and a previous image parameter, when if above-mentioned present image parameter and above-mentioned previous image parameter differences have reached a predetermined extent, above-mentioned present image parameter is stored in the above-mentioned storage element, and replaces above-mentioned previous image parameter with above-mentioned present image parameter; If when above-mentioned present image parameter and above-mentioned previous image parameter differences do not reach above-mentioned predetermined extent, then only replace above-mentioned previous image parameter with above-mentioned present image parameter.
Description of drawings
For above-mentioned and other purposes of the present invention, feature and advantage can be become apparent, a preferred embodiment cited below particularly, and conjunction with figs. describe in detail.
Wherein:
Fig. 1 is the schematic diagram of the digital camera of expression automatic monitoring of environmental variation of the present invention.
Fig. 2 is the operating process schematic diagram of the digital camera of expression automatic monitoring of environmental variation of the present invention.Symbol description
100: the digital camera that automatic monitoring of environmental changes;
10: timing unit;
20: the digital camera body;
30: storage element;
40: control unit;
50: buffer;
En1: enabling signal
Embodiment
As shown in fig. 1, the schematic diagram of the digital camera that changes for automatic monitoring of environmental of the present invention.The digital camera 100 that automatic monitoring of environmental of the present invention changes comprises a timing unit 10, in order to when the scheduled time, exports an enabling signal En1; One digital camera body 20 in order to extracting a present image, and converts a present image parameter to; One storage element is in order to store a plurality of image datas; One control unit 30, couple above-mentioned timing unit, after receiving above-mentioned enabling signal, make above-mentioned digital camera extract above-mentioned present image parameter, follow a more above-mentioned present image parameter and a previous image parameter, if when above-mentioned present image parameter and above-mentioned previous image parameter differences have reached a predetermined extent, above-mentioned present image parameter is stored in the above-mentioned storage element 30, and replaces above-mentioned previous image parameter with above-mentioned present image parameter; If when the difference between above-mentioned present image parameter and above-mentioned previous image parameter does not reach above-mentioned predetermined extent, then only replace above-mentioned previous image parameter with above-mentioned present image parameter.
Wherein, above-mentioned timing unit 10 in order to when the scheduled time T, is exported above-mentioned enabling signal En1.For instance, above-mentioned scheduled time T can be 5 seconds, 10 seconds, 30 seconds, 60 seconds and 90 seconds etc., can be set up on their own and be adjusted by the user.In addition, above-mentioned timing unit 10 is a timer, can be when above-mentioned digital camera body 20 be in shutdown (Turn off) state, when continuing timing, export above-mentioned enabling signal En1 to above-mentioned scheduled time.In addition, because the light in daytime to evening changes, insect flies over ... or the like, it is not great environment change, for example there is the stranger to enter, have car to enter or the like, so above-mentioned control unit 40 can think that above-mentioned present image parameter and above-mentioned previous image parameter differences do not reach a predetermined extent, can not store above-mentioned present image parameter, to avoid storing too much unnecessary image.Certainly, the difference degree between above-mentioned two image parameters can and be done suitable adjustment according to different purposes.In addition, above-mentioned present image parameter and previous image parameter are the image data with the digital form performance.
For instance, above-mentioned digital camera body 20, can be a static number camera unit, it is except having the optical element equally with general camera, also used CMOS SENOR, after above-mentioned control unit 40 receives above-mentioned enabling signal, waken (wake up) in order to extracting a present image, and converted to a present image parameter; Above-mentioned storage element 30 can be the memory of arbitrary pattern, in order to store a plurality of image datas.In the present embodiment, with a static RAM in order to explanation.
In addition, above-mentioned control unit 40 can be a microcontroller for instance, couples above-mentioned timing unit 10, above-mentioned digital camera body 20 and above-mentioned storage element 30, and comprises a buffer 50, in order to store a previous image.
Above-mentioned control unit 40 after receiving above-mentioned enabling signal En1, makes above-mentioned digital camera body 20 start (wake up), and extracts above-mentioned present image, and convert a present image parameter to.Follow a more above-mentioned present image parameter and a previous image parameter, when if the difference between above-mentioned present image parameter and above-mentioned previous image parameter reaches a predetermined extent, above-mentioned present image parameter is stored in the above-mentioned storage element 30, and replace above-mentioned previous image parameter with above-mentioned present image parameter, be stored in the above-mentioned buffer 50, use when contrasting next time.If when above-mentioned present image parameter and above-mentioned previous image parameter differences do not reach above-mentioned predetermined extent, then only replace above-mentioned previous image parameter, there is in the above-mentioned buffer 50 use when next time contrasting with above-mentioned present image parameter.And above-mentioned control unit 30 makes above-mentioned digital camera body 20 shutdown after above-mentioned present image parameter deposits above-mentioned buffer 50 in, export an enabling signal again until above-mentioned timing unit 10.
Please refer to Fig. 2, operating process of the present invention is described.Be example with 15 seconds in this example, at first, when step 11, above-mentioned digital camera body 20 is in shutdown (trun off) state, and 10 of above-mentioned timing units can be exported an enabling signal every 15 seconds.When step 12, after above-mentioned control unit 40 receives to above-mentioned enabling signal En1, make above-mentioned digital camera body 20 extract a present image immediately, and convert a present image parameter to; Then when step 14, above-mentioned present image parameter after above-mentioned control unit 40 is changed with above-mentioned digital camera body, contrast with there being the previous image parameter among the above-mentioned parameter compare device, when if above-mentioned present image parameter reaches a predetermined extent with previous image parameter differences, represent that then environment changes, so carry out step 16, above-mentioned present image parameter is deposited in the above-mentioned storage element 30, then carry out step 18, with above-mentioned present image parameter to going in the above-mentioned buffer 50, to replace previous image parameter originally.If above-mentioned present image parameter does not reach above-mentioned predetermined extent with previous image parameter differences in the above-mentioned steps 14, then represent the variation that environment does not obviously show, so not execution in step 16 and direct execution in step 18, with above-mentioned present image to going in the above-mentioned buffer 50, to replace previous image parameter originally.Then, above-mentioned control unit 30 can make above-mentioned digital camera body 20 shutdown wait for next 15 seconds.
In addition, above-mentioned control unit 40 also can be exported an alert signal when above-mentioned storage element 30 has been filled with image data (storage area deficiency), and starts above-mentioned digital camera body 20 shutdown.
Again, the digital camera 100 that automatic monitoring of environmental of the present invention changes also comprises a voice device (not showing in the drawings), can be a loud speaker for instance, when receiving above-mentioned alert signal, sends a voice messaging, for example the sound of " serge serge serge ".
But utilize environment automatic monitoring digital camera of the present invention, wake (wake up) back up extracts a present image and converts a present image parameter in timing automatic, compare with a previous image parameter, if above-mentioned present image parameter reaches a predetermined extent with previous image parameter differences, represent that then environment changes, just above-mentioned present image parameter is deposited in the memory, then shutdown; If above-mentioned present image parameter does not reach above-mentioned predetermined extent with previous image parameter differences, represent that then environment does not change, thus only above-mentioned present image is replaced above-mentioned previous image parameter, as the usefulness of contrast next time, shutdown then.Therefore, the present invention can avoid known video recording equipment and digital camera, and no matter captured image has no change, is filmed without exception and is stored in the memory, causes identical image repeatedly to be stored in the memory thereby has wasted storage space.In addition, the present invention replaces above-mentioned previous image at new image, be stored in back shutdown in the above-mentioned parameter memory storage, can avoid known digital camera to wait for (stand dy) and power consumption always, so the present invention reaches the monitoring of power saving, high-reliability, the time that the prolongation memory is filled with, and the ability of long term monitoring.
Though the present invention with preferred embodiment openly as above; right its is not in order to limit the present invention; any those skilled in the art; do not breaking away under the spirit and scope of the present invention situation; can change and change, so protection scope of the present invention is as the criterion with the scope that accompanying Claim was defined.
Claims (14)
1. digital camera that automatic monitoring of environmental changes comprises at least:
One timing unit in order to when the scheduled time, is exported an enabling signal;
One digital camera body in order to extracting a present image, and converts a present image parameter to;
One storage element is in order to store image data;
One control unit, after receiving above-mentioned enabling signal, make above-mentioned digital camera extract above-mentioned present image, and convert above-mentioned present image parameter to, follow a more above-mentioned present image parameter and a previous image parameter, if when above-mentioned present image parameter and above-mentioned previous image parameter difference have reached a predetermined extent, above-mentioned present image parameter is stored in the above-mentioned storage element, and replaces above-mentioned previous image parameter with above-mentioned present image parameter; If when above-mentioned present image and above-mentioned previous image parameter difference do not reach above-mentioned predetermined extent, then only replace above-mentioned previous image parameter with above-mentioned present image parameter.
2. the digital camera that automatic monitoring of environmental as claimed in claim 1 changes, wherein above-mentioned control unit is a microcontroller.
3. the digital camera that automatic monitoring of environmental as claimed in claim 2 changes, wherein above-mentioned control unit also comprises a buffer, in order to store above-mentioned previous image parameter.
4. the digital camera that automatic monitoring of environmental as claimed in claim 1 changes, wherein above-mentioned digital camera body shuts down after above-mentioned present image parameter replaces above-mentioned previous image parameter.
5. the digital camera that automatic monitoring of environmental as claimed in claim 1 changes, the wherein above-mentioned scheduled time can be utilized the above-mentioned timing unit of adjustment and change.
6. the digital camera that automatic monitoring of environmental as claimed in claim 1 changes, wherein above-mentioned timing unit is a timer.
7. the digital camera that automatic monitoring of environmental as claimed in claim 1 changes, wherein above-mentioned storage element is a static memory (SRAM).
8. the digital camera that automatic monitoring of environmental as claimed in claim 1 changes, wherein above-mentioned control unit also when the storage area of above-mentioned storage element deficiency, are exported an alert signal.
9. the digital camera that automatic monitoring of environmental as claimed in claim 8 changes, wherein above-mentioned digital camera body, shutdown when the storage area of above-mentioned storage element deficiency.
10. the digital camera that automatic monitoring of environmental as claimed in claim 8 changes also comprises a voice device, when receiving above-mentioned alert signal, sends a voice messaging.
11. the digital camera that automatic monitoring of environmental as claimed in claim 10 changes, wherein above-mentioned voice device is a loud speaker.
12. the environment automatic monitoring method of a digital camera comprises:
When a scheduled time, extract a present image, and convert a present image parameter to;
With an above-mentioned present image parameter and a previous image parameter contrast, when above-mentioned present image parameter and above-mentioned previous image parameter difference have reached a predetermined extent, store above-mentioned present image parameter, and with above-mentioned present image parameter as above-mentioned previous image parameter; And
When if above-mentioned present image parameter and above-mentioned previous image parameter difference do not reach a predetermined extent, then only with above-mentioned present image parameter as above-mentioned previous image parameter.
13. the environment automatic monitoring method of digital camera as claimed in claim 12 also comprises:
After above-mentioned present image parameter is as above-mentioned previous image parameter, shut down.
14. the environment automatic monitoring method of digital camera as claimed in claim 12 also comprises:
When above-mentioned present image parameter can't store, shut down after exporting an alert signal.
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| CN 02106292 CN1450794A (en) | 2002-04-10 | 2002-04-10 | Digital camera capable of automatic momitoring environment change |
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| CN 02106292 CN1450794A (en) | 2002-04-10 | 2002-04-10 | Digital camera capable of automatic momitoring environment change |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103093512A (en) * | 2011-10-28 | 2013-05-08 | 原相科技股份有限公司 | Event data recorder and image record module |
| CN103716564A (en) * | 2013-12-09 | 2014-04-09 | 乐视致新电子科技（天津）有限公司 | Method and device for adjusting control parameter value |
| CN104077818A (en) * | 2013-03-26 | 2014-10-01 | 研勤科技股份有限公司 | Driving recorder with intelligent switching function |
| US9025037B2 (en) | 2011-10-31 | 2015-05-05 | Pixart Imaging Inc. | Event data recorder with low power consumption |
| CN105100604A (en) * | 2014-07-18 | 2015-11-25 | 小米科技有限责任公司 | Photographing method and device |
| CN106161909A (en) * | 2014-12-03 | 2016-11-23 | 大通电子股份有限公司 | image shooting system |
-
2002
- 2002-04-10 CN CN 02106292 patent/CN1450794A/en active Pending
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103093512A (en) * | 2011-10-28 | 2013-05-08 | 原相科技股份有限公司 | Event data recorder and image record module |
| CN108615272A (en) * | 2011-10-28 | 2018-10-02 | 原相科技股份有限公司 | Drive recorder |
| CN108615272B (en) * | 2011-10-28 | 2020-07-17 | 原相科技股份有限公司 | Driving recorder |
| US9025037B2 (en) | 2011-10-31 | 2015-05-05 | Pixart Imaging Inc. | Event data recorder with low power consumption |
| USRE48624E1 (en) | 2011-10-31 | 2021-07-06 | Pixart Imaging Inc. | Event data recorder with low power consumption |
| CN104077818A (en) * | 2013-03-26 | 2014-10-01 | 研勤科技股份有限公司 | Driving recorder with intelligent switching function |
| CN103716564A (en) * | 2013-12-09 | 2014-04-09 | 乐视致新电子科技（天津）有限公司 | Method and device for adjusting control parameter value |
| CN103716564B (en) * | 2013-12-09 | 2017-02-15 | 乐视致新电子科技（天津）有限公司 | Method and device for adjusting control parameter value |
| CN105100604A (en) * | 2014-07-18 | 2015-11-25 | 小米科技有限责任公司 | Photographing method and device |
| CN105100604B (en) * | 2014-07-18 | 2019-03-01 | 小米科技有限责任公司 | Image pickup method and device |
| CN106161909A (en) * | 2014-12-03 | 2016-11-23 | 大通电子股份有限公司 | image shooting system |
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