CN102946509A - Wireless network camera - Google Patents
Wireless network camera Download PDFInfo
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- CN102946509A CN102946509A CN2012104730818A CN201210473081A CN102946509A CN 102946509 A CN102946509 A CN 102946509A CN 2012104730818 A CN2012104730818 A CN 2012104730818A CN 201210473081 A CN201210473081 A CN 201210473081A CN 102946509 A CN102946509 A CN 102946509A
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Abstract
A wireless network camera comprises a camera body, a camera interface, a data extraction processor, a receiver and an antenna, wherein the camera body, the camera interface, the data extraction processor, the receiver and the antenna are connected sequentially. The camera is characterized in that the camera body is provided with three lenses with refractive power, the three lenses are a first convex lens with an f1 focus length, a second dual-concave lens with an f2 focus length and a third concave convex lens with an f3 focus length sequentially from object space to image space, an image sensor is used for receiving images, the ratio of f1/f2 is in a range from -0.2 to -1.5, the ratio of f1/f3 is in a range from 0.45 to 1.33, the focus length of the whole optical system is f, the focus distance of a group of the first convex lens and the second dual-concave lens is f12, the f12/f is in a range from 0.62 to 2.35, the surface of the third concave convex lens is provided with a binary optical structure, and the binary optical structure is used for removing imaging differences further.
Description
Technical field
The present invention relates to areas of information technology, be specifically related to a kind of wireless network camera.
Background technology
Wireless network camera is the camera with network savvy.
Patent documentation CN2783661A discloses a kind of IP Camera, mainly include shell, be installed in the camera lens in this shell, photo-electric conversion element and circuit board, and include cylinder, the USB head of drawing from this shell, the focusing gear and the screw mandrel that are used for distance between adjustable lens and the photo-electric conversion element, this shell includes upper shell and lower house detachable and that be rotatably connected, upper shell one end is provided with a bayonet socket, be installed at this bayonet socket and comprise a plurality of LED's, and be the bank light of an angle with this upper shell, this camera lens is fixed on lower house inside by a dividing plate, cylinder is located at this camera lens below, and be fixed with a circuit board near an end of camera lens, be welded with photo-electric conversion element on this circuit board, this cylinder other end is provided with a hole, screw mandrel passes this hole, the focusing gear laterally is located at the medium position of this screw mandrel, this focusing gear and screw mandrel interlock.The present invention has advantages of adjustable focus and enlarged image.
CN202152904U discloses a kind of Webcam with full angular rotation, mainly comprise casing, be arranged on the control chip in the described casing, described control chip is connected with respectively pick-up lens and is arranged on infrared lamp on the described pick-up lens circumferential direction, also comprise base, described base has be used to controlling described pick-up lens around the first whirligig of horizontal 360 ° of rotations and being used for controlling described pick-up lens around the second whirligig of vertical 360 ° of rotations.The invention solves the problem of prior art, is a kind of full angle rotating and radio IP Camera that can convenient and swift adjustment orientation.
Summary of the invention
For addressing the deficiencies of the prior art and deficiency, the invention provides a kind of novel wireless network camera, have advantages of many with respect to prior art.
Concrete technical scheme is as follows:
A kind of wireless network camera, comprise: the camera that connects successively, utilizing camera interface, data extractor processor, receiver, antenna, it is characterized in that: the lens that described camera has refracting power are three only: be followed successively by from the object side to the image side: focal length is f1 the first convex lens, focal length is the second biconcave lens of f2, focal length is the 3rd concave-convex lens of f3, be used for accepting the imageing sensor of image, the ratio of f1/f2 is-0.2 to-1.5, the ratio of f1/f3 is 0.45 to 1.33, the focal length of whole optical system is f, the focal length of described the first convex lens and the combination of the second biconcave lens is f12, then f12/f is 0.62-2.35, be provided with the binary optical structure on the surface of described the 3rd concave-convex lens, be used for further eliminating imaging aberration.
As the preferred embodiments of the present invention, be provided with infrared low pass filter coating at the object space plated surface of described the first convex lens.
As the preferred embodiments of the present invention, the surperficial radian of described the first convex lens is greater than the surperficial radian of described the 3rd concave-convex lens.
As the preferred embodiments of the present invention, at least one surface of at least one described lens is aspheric surface.
Description of drawings
Fig. 1 wireless network camera schematic diagram;
The structural representation of Fig. 2 camera of the present invention.
Fig. 3 is the cutaway view of the described camera of Fig. 2.
Embodiment
For technological means, creation characteristic that the present invention is realized, reach purpose and effect is easy to understand, below in conjunction with concrete diagram, further set forth the present invention.
Fig. 1 is the illustration according to the cordless communication network 100 of the embodiment of the invention.
Graphic cordless communication network comprises all wireless network elements communicate by letter or communicate by letter single access point 101 of process.For simplicity and for the purpose of clear, the cordless communication network 100 of Fig. 1 is by diagram, and it comprises three network elements 103,105 and 107, but is to be understood that actual cordless communication network can comprise more multi-activity or inactive network element.Should be appreciated that access point 101 can be connected to through the wire communication link other access point or network element.Thereby access point 101 can play the bridge joint effect between the wired and wireless portion of part wireless network.
In graphic example, different network elements can be for example corresponding to PC, consumer electronic device, home appliances, printer server, personal digital assistant, audio-visual equipment or any other suitable type of device.
In special embodiment, first network element 103 periodic transmission comprise the announcement message of device identification and information.Announcement message is broadcasted by access point 101.
Yet, based on the processing of sensor signal only trend towards causing may be slowly, insecure, complicated, limited and performance suboptimal.For example, may be complicated and insecure based on the target detection of the sensor signal that comes from the vision video frequency pick-up head, and may be based on many hypothesis that target is detected.For example, the target the loudspeaker of detection in the AV environment in general will be based on the hypothesis of loudspeakers shape, size and color.These hypothesis may more or less be correct (if for example specially designed loud speaker do not have additional information just can not identify), thereby cause in visual sensor signal unreliable to micropkonic detection and can change.
According to embodiments of the invention, the processing of sensor signal can be simplified and/or improve by using the information relevant with one or more physical features of other network element that will be detected.
Hereinafter, embodiments of the invention are described with reference to special example application.In this example, first network element 103 comprises five loudspeakers that are connected to the wireless communication unit.The 3rd network element 107 comprises the large-screen video-frequency monitor that has embedded the wireless communication unit.Video-frequency monitor and loudspeaker jointly form audiovisual and present layout, and wherein, video-frequency monitor presents visual image and loudspeaker presents the surround sound that is associated.
According to embodiments of the invention, first has stored and network element 103,107 the relevant information of physical characteristic with the 3rd network element 103,107.Especially, first network element 103 comprises size, shape and the color of each loud speaker in five loud speakers.Similarly, the 3rd network element 107 comprises size, shape and the color of video-frequency monitor.
According to the present invention, first network element 103 and the 3rd network element 107 can operate to comprise the information relevant with physical characteristic in the physical characteristic message.And network element comprises for the device to other network element transmission physical characteristic message that comprises second network element 105.Especially, physical characteristic message can be included in the announcement message and the query response message by 107 emissions of the 3rd network element of being launched by first network element 103.
The function of the second network element 105 of described embodiment by in more detail diagram, and will be described in more detail in Fig. 1 hereinafter.
Data are sent to extraction process device 113, and it can operate to detect physical characteristic message and extracts physical characteristic information therefrom.Extraction process device 113 is coupled to context processor 115, and it can operate to determine the physical context characteristic of the physical environment of second network element 105.Extraction process device 113 can operate delivers to context processor 115 to the physical characteristic information that extracts.Thereby, the information of size, shape and the color of the loudspeaker of context processor 115 first network elements 103 and the video-frequency monitor of the 3rd network element 107.
Context processor can operate for determining physical context characteristic in response to the information that receives from extraction process device 113 and video camera interface 119.In described embodiment, context processor 115 can operate to carry out visual detection algorithm, especially the performance objective detection algorithm.Should be appreciated that the detection algorithm to the target that comes from visual image is being well known in the art, thereby just be not described in detail at this.In general, Target Recognition Algorithms obtains vision sensor information and it is associated with one group with the visual characteristic of the target that is identified.
Especially, context processor 115 is come the performance objective detection algorithm based on the physical message that receives in physical characteristic message.Thereby algorithm of target detection among the described embodiment estimates to come from the image of video frequency pick-up head 117, with the target of the size, shape and the color that detect first network element 103 and the 3rd network element 107.
As a special example, second network element 105 can be positioned at the center in video-frequency monitor and loudspeaker room of living in.And second network element 105 may comprise that functional block for rotating video camera 117 is to produce whole 360 ° image.Then, context processor 115 can be searched for five and had shape that the physical characteristic message that receives from first network element 103 points out and the target of color in image.For each target that is identified, this target can be used to determine from second network element 105 to different micropkonic distances from point out the relative size that size is compared in physical characteristic message.Surpass five targets that may mate this physical characteristic if find, then different algorithms can be used to select coupling likely.For example, being below or above the distance that calculates that provides the interval can be rejected.Similarly, in the algorithm of target detection estimated image with the physical characteristic message that receives from the 3rd network element 107 the target shape target identical with color.Then, it determines to arrive the distance of video-frequency monitor in response to the relative size in the image and the size of the report in the physical characteristic message.
Therefore, second network element 105 position of five loudspeakers and video-frequency monitor in the sensing chamber automatically.The speed that detects and reliability be because the cause that receives physical characteristic message from other network element has obtained great improvement, and the feasibility of application and the practicality availability that really can depend on physical characteristic message.Thereby described embodiment can realize auxiliary and/or enhancing and/or improved service.
The location positioning that should be appreciated that different target can use with a lot of diverse ways, and depends on concrete application and be used to many different purposes.For example, second network element 105 can be used to automatically detect and estimate audiovisual setup.For example, improve the surround sound performance thereby can automatically produce the suggestion of change loudspeaker position, perhaps it can calculate preferred or best customer location to obtain best surrounding sound effect.
In the above-described embodiments, simple physical measurement offers second network element 105 by other network element 103,107.Thereby these information can only be passed low volume data and can be included in the short data message.In other embodiments, the more substantial data volume that has more details can be passed.For example, the first and the 3rd network element 103,107 image sets that can launch loudspeaker and/or video-frequency monitor.For example, image may have the corresponding target that comes from a large amount of different angles.These information can be simplified the target identification of context handler 115 fully, and the reliability to the detection of target is improved.
Use the vision sensor input unit although should be appreciated that the embodiment of example, yet any suitable transducer input unit that other is used for the physical environment feature of definite second network element 105 can be used also.
Especially, the audio sensor such as microphone can be replaced or additionally use.Thereby second network element 105 can preferably include the transducer input be used to the audio visual signal of determining to comprise audio and video frequency signal.For example, this may be particularly useful to audiovisual applications.For example, the second network element of above-described embodiment may detect in addition and come from five micropkonic relative volume levels of difference.In a simple embodiment, the signal of constant volume sequentially each from five loudspeakers is launched, and can be detected by second network element 105.This can not only provide improved audio environment to estimate, but also can be used to simplify determining of visual environment.For example, volume level can be used to help determine from second network element 105 to independent micropkonic distance relatively.
In described embodiment, network element comprises the information relevant with the intrinsic physical characteristic of network element.This permission information will be stored in the network element during manufacture, and therefore a kind of straightforward procedure that produces physical message is provided.Yet in other embodiments, network element can for example can operate for replace or additionally the physical characteristic of element Network Based determine dynamically or environment, and for these are included in physical characteristic message.For example, the 3rd network element 107 can determine that video-frequency monitor is installed on the wall or is placed on the top of the shelf.These information can be simplified the detection of 105 pairs of video-frequency monitors of second network element.
In certain embodiments, network element can operate to the user and launch the expression signal.For example in the above-described embodiment, video-frequency monitor emission video image and loudspeaker audio signals.In certain embodiments, physical characteristic message can comprise the information of the current feature of the physical signalling that network element is launched.
Thereby the 3rd network element 107 can transmit the physical characteristic message that comprises the information relevant with the video image that just is being launched.This can provide the target detection of improved second network element 105.For example, if second network element 105 has the current information of just holding football match of pointing out, then it can be in response to selecting between two candidate targets with each amount of green color that is associated of these targets.
In certain embodiments, the data representation of physical signalling can be included in the physical characteristic message.For example, the MPEG-2 signal indication that is displayed on the high compression on the video-frequency monitor can be included, thereby point-device detection is provided.Yet this need to all transmission of unpractical mass data in a lot of the application.Therefore, more indirectly information often can be used, and for example comprise the information of the content type that is presented of pointing out or the audio frequency information that fingerprints.
In certain embodiments, network element can operate for embedding sign at the physical signalling that is presented.For example, the 3rd network element 107 can comprise the observer note less than infrequent visual signature.Yet second network element 105 but can detect clearly pattern, thereby the accurate detection to the target in the image that comes from video frequency pick-up head is provided.The information that is embedded into sign can be included in the physical characteristic message, therefore allows second network element 105 these information of reception and uses it for target identification.Preferably, thus sign is very trickle user note less than, therefore and can be embedded in the live picture signal.In other embodiments, sign can be special test signal.For example, video-frequency monitor can be launched special colour sequential at the test period that second network element 105 uses, to determine physical context.
In certain embodiments, the network element of transmit physical characteristic messages can oneself detect their environmental characteristic and it is included in the physical characteristic message.For example, network element can comprise the GPS receiver, and it can operate for detection of the position of network element and with it and be included in the physical characteristic message.
The network element of transmit physical characteristic messages can be in addition or is alternatively comprised moving detector.If it is mobile that moving detector is determined network element, then it can carry out the physical characteristic message of the renewal of estimating again of physical environment and the new environment of emission indication.Moving detector for example can be a simple shock detector.
The particular example of application that hereinafter, can manifest or simplify the transmission of physical characteristic message will be described.In this example, a house can comprise a large amount of network elements of dynamic network.These network elements can comprise that TV, Audio Loop are around acoustic amplifier, loudspeaker, computer etc.These network elements of part or all can operate for via the dynamic network transmit physical characteristic messages.
In this environment, the control network element can comprise display and part or all of network element is carried out distant control function.Thereby the user can control equipment and the device that is placed in the whole house with single portable control network element.For example, same control network element can be controlled the volume of surround sound, the operation of DVD player and the light source in one or more room.
In described embodiment, the control network element can operate for determining to point out part or all the physical location map of network element of house.Preferably, the plane graph in house can manually be inputted, and the control network element can automatically be determined the position of other network element and they are associated with plane graph.Especially, illustrated such as the embodiment of Fig. 1, the control network element can comprise the video frequency pick-up head based on the vision-based detection of the physical characteristic message performance objective that receives.
Preferably, the control network element is moved around the house, automatically gathers physical characteristic message and detects the position of different network elements.Thereby the location drawing can automatically or semi-automatically be determined, and can be presented to the user at the suitable display of preferably controlling a network element part.Preferably, control network element continuously or regularly performance objective detection, the change in location that therefore allows the control network automatically to detect any network element is also automatically upgraded the location drawing.
Described camera 117 has following architectural feature:
Shown in Figure 2, be a kind of embodiment of the present invention.Have the lens mount of being arranged at 10 inner aspheric lens groups, camera 20, camera are connected on the circuit board 40, are convenient to captured image information is sent in the control circuit on the circuit board 40 timely and accurately.
This aspheric lens group, its front and back are by two high accuracy non-spherical lenses 11,13 form: front lens 11 and rear lens 13 (shown in Figure 2), the concave part of two aspheric surface front lenss 11 and rear lens 13 all inwardly arranges, the centre is equipped with the concave lens 12 that adapts with front lens 11 and rear lens 13, the front concave surface of concave lens 12 is corresponding with the projection radian of front lens 11, and the back concave surface of concave lens 12 is corresponding with the projection radian of rear lens 13, the focusing spacing between the lens that is arranged so that of this non-spherical lens can become very little, can greatly shorten thus the length of lens group, make the volume of whole camera can be very little.
The focal length of described front lens 11 is f1, and the focal length of concave lens 12 is f2, and the focal length of rear lens is f3, and then the ratio of f1/f2 is that-0.2 to-1.5, f1/f3 ratio is 0.45 to 1.33.The focal length of whole optical system is f, and the focal length of described front lens and concave lens combination is f12, and then f12/f is 0.62-2.35.Camera lens with said structure parameter is conducive to dwindle in the systematic optical axis direction size of whole optical system.
Preferably be provided with the binary optical structure on the surface of lens 13, be used for further eliminating imaging aberration.
The imaging len optical system that the present invention adopts is three lens optical systems, compares its anaberration ability with two lens optical systems and significantly improves, and the camera that the practice surface has said structure parameter of the present invention is easy to realize miniaturization, and image quality is higher simultaneously.
Shown in Figure 3, in the aspheric lens group, the surperficial radian of its front lens 11, is reflected to this image on the lens group camera behind so that take the image with wider visual angle simultaneously very exactly greater than the surperficial radian of rear lens 13.
Above-mentioned aspheric lens group is provided with integrated infrared low pass filter coating 14 on the non-spherical lens of its front, to have suitable filter effect, guarantee captured dynamic image quality.
The described minisize pick-up head that can take colored picture rich in detail, its pedestal is made of sheet metal and flexible material, and sheet metal consists of bracing frame, and flexible material is filled bracing frame, and forms the protection to sheet metal and lens group.
Camera 20 shown in Figure 2 is CMOS photoelectricity camera, can become 24 very color dynamic images.Captured article or scenery scioptics hole 30, front lens 11, concave lens 12, rear lens 13 are reflected on the camera 20, are taken.
Camera also comprises a package casing, and signal processing module, sensor element are embedded in the package casing.Electric capacity is provided with at least two sheet pole plates, and two sheet pole plates are embedded in the package casing respectively.Because the sheet pole plate is embedded in the package casing, the package casing area is relatively large, therefore allows two sheet pole plates to have larger area, and then allows electric capacity to have larger capacitance.Camera is provided with a fixture, and fixture can be viscose, magnet, snap close etc., and concrete form can be chosen according to actual working environment.
Above demonstration and described basic principle of the present invention and principal character and advantage of the present invention.The technical staff of the industry should understand; the present invention is not subjected to the restriction of above-mentioned using method; that describes in above-mentioned using method and the specification just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.
Claims (4)
1. wireless network camera, comprise: the camera that connects successively, utilizing camera interface, data extractor processor, receiver, antenna, it is characterized in that: the lens that described camera has refracting power are three only: be followed successively by from the object side to the image side: focal length is f1 the first convex lens, focal length is the second biconcave lens of f2, focal length is the 3rd concave-convex lens of f3, be used for accepting the imageing sensor of image, the ratio of f1/f2 is-0.2 to-1.5, the ratio of f1/f3 is 0.45 to 1.33, the focal length of whole optical system is f, the focal length of described the first convex lens and the combination of the second biconcave lens is f12, then f12/f is 0.62-2.35, be provided with the binary optical structure on the surface of described the 3rd concave-convex lens, be used for further eliminating imaging aberration.
2. camera as claimed in claim 1 is provided with infrared low pass filter coating at the object space plated surface of described the first convex lens.
3. camera as claimed in claim 1, the surperficial radian of described the first convex lens is greater than the surperficial radian of described the 3rd concave-convex lens.
4. camera as claimed in claim 1, at least one surface of at least one described lens is aspheric surface.
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Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101165529A (en) * | 2006-10-16 | 2008-04-23 | 索尼株式会社 | Image catching lens and image catching apparatus |
CN101373258A (en) * | 2007-08-23 | 2009-02-25 | 鸿富锦精密工业(深圳)有限公司 | Endoscope lens and endoscope apparatus |
CN201255784Y (en) * | 2007-09-10 | 2009-06-10 | 富士能株式会社 | Video taking lens, camera module and video taking apparatus |
US20100053775A1 (en) * | 2006-12-22 | 2010-03-04 | Seiko Precision, Inc. | Imaging lens, and imaging apparatus and mobile terminal apparatus using the same |
US20100149659A1 (en) * | 2008-12-16 | 2010-06-17 | Chun-Shan Chen | Optical Lens System for Taking Image |
CN102053343A (en) * | 2009-11-02 | 2011-05-11 | 三星电机株式会社 | Imaging optical system |
CN102289051A (en) * | 2010-06-17 | 2011-12-21 | 三星电机株式会社 | Optical system |
CN102436057A (en) * | 2009-01-14 | 2012-05-02 | 大立光电股份有限公司 | Lens group for camera shooting |
-
2012
- 2012-11-20 CN CN2012104730818A patent/CN102946509A/en active Pending
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101165529A (en) * | 2006-10-16 | 2008-04-23 | 索尼株式会社 | Image catching lens and image catching apparatus |
US20100053775A1 (en) * | 2006-12-22 | 2010-03-04 | Seiko Precision, Inc. | Imaging lens, and imaging apparatus and mobile terminal apparatus using the same |
CN101373258A (en) * | 2007-08-23 | 2009-02-25 | 鸿富锦精密工业(深圳)有限公司 | Endoscope lens and endoscope apparatus |
CN201255784Y (en) * | 2007-09-10 | 2009-06-10 | 富士能株式会社 | Video taking lens, camera module and video taking apparatus |
US20100149659A1 (en) * | 2008-12-16 | 2010-06-17 | Chun-Shan Chen | Optical Lens System for Taking Image |
CN102436057A (en) * | 2009-01-14 | 2012-05-02 | 大立光电股份有限公司 | Lens group for camera shooting |
CN102053343A (en) * | 2009-11-02 | 2011-05-11 | 三星电机株式会社 | Imaging optical system |
CN102289051A (en) * | 2010-06-17 | 2011-12-21 | 三星电机株式会社 | Optical system |
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Application publication date: 20130227 |