CN104954735A - Surveillance camera system - Google Patents
Surveillance camera system Download PDFInfo
- Publication number
- CN104954735A CN104954735A CN201510098311.0A CN201510098311A CN104954735A CN 104954735 A CN104954735 A CN 104954735A CN 201510098311 A CN201510098311 A CN 201510098311A CN 104954735 A CN104954735 A CN 104954735A
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- China
- Prior art keywords
- unit
- flank
- camera system
- rotary support
- cctv camera
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Classifications
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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
- H04N23/68—Control of cameras or camera modules for stable pick-up of the scene, e.g. compensating for camera body vibrations
- H04N23/681—Motion detection
- H04N23/6815—Motion detection by distinguishing pan or tilt from motion
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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
- H04N23/50—Constructional details
- H04N23/51—Housings
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/18—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast
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- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Studio Devices (AREA)
- Accessories Of Cameras (AREA)
Abstract
The invention provides a surveillance camera system. The surveillance camera system includes: a component fixing unit; a drive motor mounted on the component fixing unit; a rotary supporting unit which rotates by force generated by the drive motor; a cover body unit which has inner space and is connected to the rotary supporting unit and rotates as the rotary supporting unit rotates; and a rotating shaft unit which is fixed on the component fixing unit and rotatably supports the rotary supporting unit; and a flank unit which protrudes from an outer surface of the cover body unit.
Description
This application claims and be submitted to the rights and interests of the 10-2014-0034133 korean patent application of Korean Intellectual Property Office on March 24th, 2014, the full content disclosed in described korean patent application is contained in this by reference.
Technical field
One or more embodiment of the present invention relates to a kind of system, more particularly, relates to CCTV camera system.
Background technology
CCTV camera system (security camera system) operates in wider region by pan (panning) operation and pitching (tilting) and gathers image and provide monitoring.
Panning operation and pitching action need camera unit are rotated, and therefore, image collecting device comprises rotary support unit and rotary drive unit.
That is, the camera unit of CCTV camera system has relative to the rotatable rotatable support structure of fixed cell, and rotatable support structure is by receiving power from rotary drive unit (such as, motor) and make camera unit rotate.
When CCTV camera system performs panning operation and pitching operates to gather image and to provide monitoring, because the operation of internal electronics and the driving of rotary drive unit cause producing heat.In this case, heat radiation can prevent CCTV camera system malfunctions and CCTV camera system can be enable to gather image clearly fast.
No. 3342273 Japan Patent (title: CCTV camera system (A security camera system), patentee: STAR MICRONICS CO., LTD.) in fact discloses the General Matters of CCTV camera system.
[prior art document]
Patent: No. 3342273 Japan Patent
Summary of the invention
One or more embodiment of the present invention provides CCTV camera system.
Other aspects will partly be set forth in the following description, and part will become obvious from description, or be understood by the enforcement of the present embodiment.
According to one or more embodiment of the present invention, provide a kind of CCTV camera system, described CCTV camera system comprises: assembly fixed cell; Drive motors, is arranged on assembly fixed cell; Rotary support unit, the power produced by drive motors and rotating; Cover unit, has inner space, and rotates together along with the rotation of rotary support unit by being connected to rotary support unit; Axle unit, is fixed to assembly fixed cell and rotatably supports rotary support unit; At least one flank unit, outwardly giving prominence to from cover unit.
At least one flank unit described can have fairshaped shape.
At least one flank unit described can be set to form predetermined angular relative to the direction of rotation of rotary support unit.
At least one flank unit described can comprise multiple flank unit, and described multiple flank unit can be separated from each other in the direction of rotation of rotary support unit.
Air circulation hole is formed in the cover unit of the vicinity of at least one flank unit described, and wherein, air is through air circulation hole circulation.
Drive motors can supply stress to rotary support unit, to perform panning operation or pitching operation.
Accompanying drawing explanation
By below in conjunction with the description of accompanying drawing to embodiment, these and/or other side will become obvious, and be easier to understand, wherein:
Fig. 1 is the perspective view of CCTV camera system according to an embodiment of the invention;
Fig. 2 is the enlarged perspective of the reverse side of the CCTV camera system of Fig. 1 according to an embodiment of the invention;
Fig. 3 is the perspective view of the image capture unit block of the CCTV camera system of Fig. 1 according to an embodiment of the invention;
Fig. 4 is according to an embodiment of the invention for making the decomposition diagram of the rotary support unit block of the image capture unit block pan of Fig. 3;
Fig. 5 is the perspective view of the cap assemblies of Fig. 1 according to an embodiment of the invention;
Fig. 6 is the perspective view of the first flank unit of Fig. 5 according to an embodiment of the invention;
Fig. 7 is the sectional view of the various shapes of the first flank unit that Fig. 6 is according to an embodiment of the invention shown;
Fig. 8 is the chart compared that the CCTV camera of prior art and the cooling performance according to an embodiment of the invention between CCTV camera are shown.
Embodiment
To describe embodiment in detail now, the example of embodiment is shown in the drawings.There is provided these embodiments will to be thoroughly with complete to make the disclosure, and scope of the present invention is conveyed to those skilled in the art fully.But the present invention can implement in many different forms, and various change can be carried out.The spirit and scope of the present invention will be defined by the claims.The object of term used herein is only describe specific embodiment and be not intended to limit exemplary embodiment.In current specification, unless clearly pointed out in addition in context, otherwise singulative is also intended to comprise plural form.In the following embodiments, will be appreciated that when use term " to comprise " in this specification or " comprising " time, show the feature described in existing and/or assembly, but do not get rid of and there is or add one or more further feature and/or assembly and/or its combination.Although will be appreciated that the term such as " first ", " second " can be used for describing various element at this, these elements should not limit by these terms.These terms are only for separating an element with another element region.
Fig. 1 is the perspective view of CCTV camera system 10 according to an embodiment of the invention.Fig. 2 is the enlarged perspective of the reverse side of the CCTV camera system 10 of Fig. 1.
As shown in Figures 1 and 2, CCTV camera system 10 is dome-shaped CCTV camera systems, and comprises gas dome 11, main body 12, image capture unit block 13 and fixed cell 14.
Gas dome 11 is formed by optically transparent material, makes pickup light pass gas dome 11.The example of optically transparent material can be glass and plastics.
Gas dome 11 is hemisphere and can be arranged in main body 12.
Image capture unit block 13 is arranged on the inner side of main body 12, and as mentioned above, gas dome 11 is arranged on the downside of main body 12.
Image capture unit block 13 is devices of carries out image picked-up, and comprises the camara module 100 that will be described below.
Fixed cell 14 makes main body 12 be fixed on fixed structure S.Here, the example of fixed structure S can be wall, ceiling or pillar.
CCTV camera system 10 is dome-shaped camera chains, but CCTV camera system 10 is not limited thereto.That is, the different types except dome-shaped can be had according to the CCTV camera system 10 of current embodiment.
Fig. 3 is the perspective view of the image capture unit block 13 of the CCTV camera system 10 of Fig. 1 according to an embodiment of the invention.Fig. 4 is the decomposition diagram according to an embodiment of the invention for making the image capture unit block 13 of Fig. 3 carry out the pan rotary support unit block 200 of pan.Fig. 5 is the perspective view of the cap assemblies of Fig. 1 according to an embodiment of the invention.
With reference to Fig. 3 to Fig. 5, image capture unit block 13 can comprise camara module 100, pan rotary support unit block 200, pitching rotary support unit block 300 and cap assemblies 400.
Camara module 100 is constructed to by comprising image-pickup device (not shown) (such as optical system 110 and charge coupled device (CCD)) and pickup image or monitor.
Centered by camara module 100 is constructed to be made by panning operation, the z-axis of line rotates, and is constructed to be rotated around x-axis by pitching operation.
Pan rotary support unit block 200 support cameras module 100, camara module 100 is rotated around the z-axis as center line, and pan rotary support unit block 200 comprise first assembly fixed cell 210, first drive motors 220, first driving pulley 230, first band the 240, first rotary support unit 250, first axle unit 260 and the first slip ring 270.
First assembly fixed cell 210 is the parts fixedly mounted on the main body 12, is plate shape.
First drive motors 220 is provided for performing the actuating force of panning operation and is arranged on the sidepiece of the first assembly fixed cell 210.First drive motors 220 can be the motor (such as, stepping motor, direct current machine, servomotor) that can be readily controlled.
First drive motors 220 makes the first rotary support unit 250 rotate in response to the instruction of controller (not shown).
The axle that first driving pulley 230 is arranged on the first drive motors 220 make the first band 240 be arranged on the first driving pulley 230 rotate.With regard to current embodiment, because the first band 240 is Timing Belts, therefore the first driving pulley 230 can be the belt wheel for Timing Belt.
First band 240 is the Timing Belts including tooth within it.
Although the first band 240 is Timing Belts, the first band 240 according to current embodiment is not limited thereto.That is, the first band 240 can be common flat rubber belting or V-type band.
First rotary support unit 250 is installed to be and relatively rotates relative to the first assembly fixed cell 210, and the first rotary support unit 250 has the shape of hollow.
First Binding protein wheel unit 251 is arranged on the outer surface of the bottom of the first rotary support unit 250.In the ongoing illustrated embodiment, the first band 240 is Timing Belts, and therefore, the first Binding protein wheel unit 251 also can be the shape of Toothed belt pulley.Because the first Binding protein wheel unit 251 is inserted in the first band 240, therefore, the first rotary support unit 250 is with the rotation of 240 corresponding to first and rotates.
Pitching rotary support unit block 300 is arranged on the first rotary support unit 250.
First axle unit 260 is fixedly mounted on the first assembly fixed cell 210, and rotatably supports the first rotary support unit 250.
First slip ring 270 is the devices for preventing cable C from reversing, and can be well-known common slip ring.
Meanwhile, with regard to pitching rotary support unit block 300, can implement the structure of pan rotary support unit block 200 as described above.
That is, as shown in Figure 3, pitching rotary support unit block 300 performs the function of support cameras module 100, camara module 100 is rotated around the x-axis as center line, and pitching rotary support unit block 300 comprise the second assembly fixed cell 310, second drive motors 320, second driving pulley (not shown), second band the 340, second rotary support unit 350 and the second axle unit 360.The structure of first assembly fixed cell 210, first drive motors 220, first driving pulley 230, first band the 240, first rotary support unit 250 and the first axle unit 260 can be applicable to the structure of the second assembly fixed cell 310, second drive motors 320, second driving pulley (not shown), second band the 340, second rotary support unit 350 and the second axle unit 360, therefore, the description to these parts will do not repeated.
But the first assembly fixed cell 210 is fixedly mounted in main body 12, and the second assembly fixed cell 310 is fixedly mounted on the upper surface of the first rotary support unit 250.
Cap assemblies 400 can be arranged on the first rotary support unit 250.In this case, cap assemblies 400 can comprise the first cap assemblies 410, first cap assemblies 410 and be fixed on the first rotary support unit 250, rotates with the rotation (panning operation) of the pan along with the first rotary support unit 250 simultaneously.In addition, cap assemblies 400 can comprise the second cap assemblies 420, second cap assemblies 420 and be fixed on the second rotary support unit 350, rotates to rotate (pitching operation) along with the pitching of the second rotary support unit 350 simultaneously.
More particularly, the first cap assemblies 410 is formed to be connected to the first rotary support unit 250, and the first cap assemblies 410 can comprise: the first cover unit 411, has inner space; First flank unit 412, is formed to give prominence to from the first cover unit 411.In addition, the first air circulation hole 413 penetrating the first cover unit 411 can be formed in the first cover unit 411.
The edge of the first cover unit 411 can be formed as unlimited (open cells).In this case, the second cap assemblies 420 can be formed in the open cells of the first cover unit 411, can slide in open cells.
First flank unit 412 as above can form predetermined angular relative to the direction of rotation of the first cover unit 411.Specifically, the first flank unit 412 can be formed perpendicular to the direction of rotation of the first cover unit 411.In this case, the first flank unit 412 can be formed according to all kinds, and can be formed according to fairshaped shape.In addition, the first flank unit 412 can be formed as multiple, and multiple first flank unit 412 can be formed apart from each other in the direction of rotation of the first cover unit 411.
First air circulation hole 413 can be formed near the first flank unit 412 as above.First air circulation hole 413 can be formed as multiple, multiple first air circulation hole 413 can be formed apart from each other, therefore, air can from the outer loop of the first cover unit 411 to the inside of the first cover unit 411 or the outside from the inner loop of the first cover unit 411 to the first cover unit 411.
Second cap assemblies 420 can comprise: the second cover unit 421, is installed to be in the open cells that can slide into the first cover unit 411; Second flank unit 422, gives prominence to from the outer surface of the second cover unit 421.In addition, the second cap assemblies 420 can comprise the transmission units 424 being formed as transparent, makes can pass transmission units 424 from the image taking light of external incident.
Second cover unit 421 as above rotates along with the pitching rotation of the second rotary support unit 350 by being connected to the second rotary support unit 350.In this case, the second cover unit 421 can in the open cells of the first cover unit 411 sliding motion.In addition, the second cover unit 421 can comprise the second air circulation hole 423.Air in first cover unit 411 can be directed to outside or extraneous air can be directed in the first cover unit 411 by the second air circulation hole 423.Second air circulation hole 423 and the first air circulation hole 413 same or similar.
Second flank unit 422 can be similar to the first flank unit 412 and be formed.In this case, the second flank unit 422 can be set to form predetermined angular relative to the direction of rotation of the second cover unit 421, and specifically, the second flank unit 422 can arrange perpendicular to described direction of rotation or can have fairshaped shape.In addition, the second flank unit 422 can be formed as multiple, and multiple second flank unit 422 can be separated from each other relative to the length direction of the second cover unit 421.
Transmission units 424 as above can be formed according to various shape.Such as, transmission units 424 can be the open cells penetrating the second cover unit 421, and in addition, transmission units 424 can be formed in the transmissive window that the open cells of the second cover unit 421 is formed by transparent material.
Hereinafter, the method for operation supervise and control camera chain 10 will be described.
When operation supervise and control camera chain 10, the internal temperature of the first cover unit 411 and the second cover unit 421 can raise according to the driving of control unit (not shown), the first drive motors 220, second drive motors 320 and image capture unit block 13.In this case, the internal temperature of the first cover unit 411 and the second cover unit 421 raises and may impact the electronic installation be arranged in the first cover unit 411 and the second cover unit 421 and circuit, therefore, needs to reduce internal temperature fast.
In this case, produce air-flow to reduce the internal temperature of the first cover unit 411 and the second cover unit 421 by the first flank unit 412 and the second flank unit 422 by the panning operation of CCTV camera system 10 or pitching operation.
More specifically panning operation will be described.When CCTV camera system 10 needs panning operation, control unit (not shown) is by powering to the first drive motors 220 and driving the first drive motors 220.
When the first drive motors 220 is by driving, the first driving pulley 230 being connected to the axle of the first drive motors 220 rotates.When the first driving pulley 230 rotates, power is passed to the first band 240, thus the first rotary support unit 250 is rotated.In this case, when the first rotary support unit 250 rotates, the first cover unit 411 being connected to the first rotary support unit 250 is rotatable.
When the first cover unit 411 rotates, the first flank unit 412 rotates together with the first cover unit 411, therefore, air can be made to circulate between the first cover unit 411 and gas dome 11.
When producing air-flow by the first flank unit 412, the internal temperature between the first cover unit 411 and gas dome 11 can be reduced.In addition, the inner air between the first cover unit 411 and the second cover unit 421 flow to the outside of the first cover unit 411 and the second cover unit 421 by least one in the first air circulation hole 413 and the second air circulation hole 423.In addition, the air of the outside of the first cover unit 411 and the second cover unit 421 flow to the inside of the first cover unit 411 and the second cover unit 421 by least one in the first air circulation hole 413 and the second air circulation hole 423.
Therefore, when performing panning operation, CCTV camera system 10 makes air-flow strongly circulate by the first flank unit 412, therefore, and the heat cooling that each parts can be made to produce.
Next, pitching operation is described.When needing the pitching operation of CCTV camera system 10, control unit (not shown) is by powering to the second drive motors 320 operated for pitching and driving the second drive motors 320.
When the second drive motors 320 is by driving, the second driving pulley (not shown) being connected to the axle of the second drive motors 320 rotates.When the second driving pulley (not shown) rotates, power is passed to the second band 340, thus the second rotary support unit 350 is rotated.
In this case, the second cover unit 421 being connected to the second rotary support unit 350 rotates together with the second rotary support unit 350, and in addition, the second flank unit 422 is rotatable.When the second flank unit 422 rotates, can produce air-flow as the rotation by the first flank unit 412 and produce air-flow.
Therefore, when performing pitching operation, CCTV camera system 10 makes air-flow strongly circulate by the second flank unit 422, therefore, can make the heat cooling produced from each unit.
Fig. 6 is the perspective view of the first flank unit 412 of Fig. 5 according to an embodiment of the invention.Fig. 7 is the sectional view of the various shapes of the first flank unit 412 that Fig. 6 is according to an embodiment of the invention shown.
With reference to Fig. 6 and Fig. 7, the first flank unit 412 and the second flank unit 422 can be formed according to various shape.Because the first flank unit 412 is formed as mutually the same with the second flank unit 422 or similar each other, therefore, hereinafter, for convenience of explanation, the first flank unit 412 mainly will be described.
As mentioned above, the first flank unit 412 can be formed perpendicular to the direction of rotation of the first cover unit 411.In this case, the shape in the A-A cross section of the first flank unit 412 can be formed according to various shape.Such as, as shown in (a) in Fig. 7, the cross section of the first flank unit 412 can be formed as rectangular shape.In addition, as shown in (b) in Fig. 7, the cross sectional shape of the first flank unit 412 can be trapezoidal shape.Except for the above shape, as shown in (c) in Fig. 7, the side surface of the first flank unit 412 also can have recessed shape.In addition, as shown in (d) in Fig. 7, the cross section of the first flank unit 412 can be rectangular shape and rectangular edge is rounded.
When the cross section of the first flank unit 412 is trapezoidal shape, rigidity can be increased.In addition, with regard to when being formed spill with regard to the part in the cross section when the first flank unit 412, the amount of the throughput be recycled when the first flank unit 412 rotates can be increased.In addition, when edge is rounded when the cross section of the first flank unit 412 has rectangular shape, assembly damage or the damage to external device (ED) can be avoided.
The shape of the first flank unit 412 is not limited thereto, and that is, the first flank unit 412 can have any shape being formed in the first cover unit 411 and can producing air-flow when the first cover unit 411 rotates.
Fig. 8 is the chart compared that the CCTV camera of prior art and the cooling performance according to an embodiment of the invention between CCTV camera are shown.Hereinafter, similar label is used to indicate similar element.
With reference to Fig. 8, as mentioned above, the CCTV camera of prior art does not comprise the first flank unit 412 and the second flank unit 422.In this case, the temperature can measured when being performed pitching operation and rotation process by operation supervise and control camera chain 10 for comparing is supposed.
When analyzing the result according to the temperature of the operational measure of the CCTV camera of prior art, with regard to the printed circuit board (PCB) (PCB) being wherein provided with main circuit, confirm that temperature is 98.8 DEG C.But, with regard to regard to the CCTV camera system 10 of current embodiment, when pitching and pan rotate, the temperature of PCB is reduced to 95.2 DEG C, that is, producing air-flow by rotating via at least one in the first flank unit 412 and the second flank unit 422, making temperature reduce about 3.6 DEG C.
About imageing sensor, the temperature of the CCTV camera of prior art is 98.7 DEG C, and for the CCTV camera system 10 according to current embodiment, temperature is 95 DEG C, the temperature of CCTV camera system 10 reduces about 3.7 DEG C than the temperature of the CCTV camera of prior art.For the camera lens and the lens bracket that form optical system 110, the camera lens of the CCTV camera of prior art and the temperature of lens bracket are 98.1 DEG C and 61.1 DEG C respectively.But, be 94.4 DEG C and 56.6 DEG C respectively according to the camera lens of the CCTV camera system 10 of current embodiment and the temperature of lens bracket, reduce 3.7 DEG C and 4.5 DEG C respectively than the camera lens of the CCTV camera of prior art and the temperature of lens bracket.
In addition, for the first drive motors 220 being respectively used to pan rotation and pitching rotation and the second drive motors 320, be 51.5 DEG C and 64.9 DEG C respectively according to the second drive motors 320 of the CCTV camera system 10 of present example and the temperature of the first drive motors 220, reduce 6.3 DEG C and 7.5 DEG C than the second drive motors of CCTV camera of the prior art and the temperature of the first drive motors.
In addition, when the PCB-NW (PCB-NW is the cable being connected to PCB) of the CCTV camera with prior art, digital signal processor (DSP), radiator (radiating part) are compared with the temperature of power converter, the temperature of PCB-NW, the DSP of CCTV camera system 10, radiator and power converter reduces 5.4 DEG C, 5.4 DEG C, 5.4 DEG C and 4.3 DEG C respectively.
Therefore, according in the CCTV camera 10 of current embodiment, when performing pitching operation and panning operation, by utilize in the first flank unit 412 and the second flank unit 422 at least one and in CCTV camera system 10, produce air-flow, therefore, the composed component of CCTV camera system 10 can be made effectively to cool.
According in the CCTV camera system of present example, when CCTV camera system performs panning operation or pitching operation, can make the inside of CCTV camera system rapidly and effectively cool.
Although described one or more embodiment of the present invention with reference to the accompanying drawings, but what those skilled in the art will appreciate that is, when not departing from the spirit and scope of the present invention be defined by the claims, the various changes in form and details can be made to it.
Claims (6)
1. a CCTV camera system, described CCTV camera system comprises:
Assembly fixed cell;
Drive motors, is arranged on assembly fixed cell;
Rotary support unit, the power produced by drive motors and rotating;
Cover unit, has inner space, and rotates together along with the rotation of rotary support unit by being connected to rotary support unit;
Axle unit, is fixed to assembly fixed cell and rotatably supports rotary support unit;
At least one flank unit, outwardly giving prominence to from cover unit.
2. CCTV camera system as claimed in claim 1, wherein, at least one flank unit described has fairshaped shape.
3. CCTV camera system as claimed in claim 1, wherein, at least one flank unit described is set to form predetermined angular relative to the direction of rotation of rotary support unit.
4. CCTV camera system as claimed in claim 1, wherein, at least one flank unit described comprises multiple flank unit, and described multiple flank unit is separated from each other in the direction of rotation of rotary support unit.
5. CCTV camera system as claimed in claim 1, wherein, is formed with the air circulation hole penetrating cover unit near at least one flank unit described.
6. CCTV camera system as claimed in claim 1, wherein, drive motors supplies stress to rotary support unit, to perform panning operation or pitching operation.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020140034133A KR102116097B1 (en) | 2014-03-24 | 2014-03-24 | Security camera system |
| KR10-2014-0034133 | 2014-03-24 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104954735A true CN104954735A (en) | 2015-09-30 |
| CN104954735B CN104954735B (en) | 2019-06-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510098311.0A Active CN104954735B (en) | 2014-03-24 | 2015-03-05 | Monitor camera system |
Country Status (2)
| Country | Link |
|---|---|
| KR (1) | KR102116097B1 (en) |
| CN (1) | CN104954735B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113364942A (en) * | 2020-03-06 | 2021-09-07 | 韩华泰科株式会社 | Panning motion camera |
| RU2813227C1 (en) * | 2023-06-30 | 2024-02-08 | Общество с ограниченной ответственностью "Трансмаш-Томск" | Rotating device |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102260186B1 (en) * | 2020-12-24 | 2021-06-04 | 주식회사 원우이엔지 | Ptz camera for cctv |
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Also Published As
| Publication number | Publication date |
|---|---|
| KR20150110145A (en) | 2015-10-02 |
| CN104954735B (en) | 2019-06-18 |
| KR102116097B1 (en) | 2020-05-27 |
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