CN209017149U - A kind of handheld video acquisition terminal with TYPE-C interface - Google Patents
A kind of handheld video acquisition terminal with TYPE-C interface Download PDFInfo
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- CN209017149U CN209017149U CN201821570604.XU CN201821570604U CN209017149U CN 209017149 U CN209017149 U CN 209017149U CN 201821570604 U CN201821570604 U CN 201821570604U CN 209017149 U CN209017149 U CN 209017149U
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Abstract
The utility model belongs to video acquisition field, specifically disclose a kind of handheld video acquisition terminal with TYPE-C interface, including for providing the power module of power supply, for storing the memory module of terminal data, display module for human-computer interaction, for acquiring the video acquisition module of image information, for the communication module of communication and for providing the function light source module of illumination and signal identification, terminal is integrated with TYPE-C interface simultaneously, while simplifying the structure of terminal, the different connection requirement of terminal can be achieved, transmission rate is fast, it has been obviously improved the performance of terminal.
Description
[technical field]
The utility model belongs to railroad train field, and in particular to a kind of handheld video acquisition with TYPE-C interface is whole
End.
[background technique]
With the promotion of the railroad train speed of service and becoming larger for passenger capacity, the inspection and maintenance of railroad train become more next
It is more important, increasingly by the attention of people.The large size safety accident as caused by the failure of railroad train happens occasionally, caused by
Injures and deaths and property loss are difficult to estimate and retrieve.Under the guidance of new concept and under the support of new technology, inspection maintenance process is matched
Standby video capture device, can accomplish the complete documentation of video information in collection process.
In train groups maintenance, train groups are parked in interior, and the critical component of relationship train operating safety is most of in vehicle
Bottom.Since train groups stop indoors, a large amount of repair and maintenance operations cause train groups vehicle bottom rather dark, in addition again at vehicle bottom
Vehicle bottom structure is complicated, components are various, so that repair and maintenance becomes complex and difficulty.
Existing terminal device realizes communication link by USB interface, RJ45 interface or other communication interfaces and other equipment
It connects, such interface volume is big, and data transmission is slow, and supported protocol is single.In the equipment of small volume, a variety of connections are realized
When, multiple and different interfaces need to be configured, so that boundary's structure of equipment becomes complicated, volume becomes larger.
[utility model content]
The purpose of this utility model is that in view of the deficiencies of the prior art, providing a kind of hand-held view with TYPE-C interface
Frequency acquisition terminal can simplify terminal structure, reduce terminal volume, realize different connection requirements by an interface.
Specifically, the technical solution of the utility model is:
A kind of handheld video acquisition terminal with TYPE-C interface, including shell, power module, processing module, storage
Module, display module and video acquisition module further include TYPE-C interface, the TYPE-C interface be separately connected processing module and
Power module.
It further, further include TYPE-C intelligent recognition chip, TYPE-C intelligent recognition chip automatic butt enters TYPE-C
The peripheral apparatus of interface is identified.
It further, further include communication module, the communication module is connected to processing module, for the external logical of terminal
Letter.
Further, the communication module is WIFI module, bluetooth module, NFC module, NB-IOT module, 3G communication mould
One of block, 4G communication module and 5G communication module are a variety of.
It further, further include audio-frequency module, the audio-frequency module is connected to the processing module, and the audio-frequency module is used
In acquisition and/or output audio-frequency information.
It further, further include Keysheet module, the Keysheet module is connected to the processing module, and the Keysheet module is used
In inputting operation instruction.
It further, further include locating module, the locating module is connected to processing module, for providing location information.
Further, the locating module is GPS and Beidou bimodulus locating module
It further, further include function light source module, the function light source module is for illumination and/or signal identification.
Further, the shell is flashlight tubular.
Compared with prior art, video acquisition terminal disclosed by the utility model is integrated with TYPE-C interface, interface plug
Simply, data transmission bauds is fast, can support different connection requirements, simplify terminal structure while, it can be achieved that terminal not
Same connection requirement, increases the applicability of terminal, improves the performance of terminal.
[Detailed description of the invention]
Fig. 1 is a kind of perspective view for handheld video acquisition terminal with TYPE-C interface that embodiment provides.
Fig. 2 is a kind of structural block diagram for handheld video acquisition terminal with TYPE-C interface that embodiment provides.
Fig. 3 is the structural block diagram of communication module in Fig. 2.
It is as follows that corresponding structure is numbered in figure:
1, processing module 2, audio-frequency module 2-1, microphone 2-2, sound equipment 3, display module 4, Keysheet module 5, deposit
Store up module 6, communication module 6-1,3G communication module 6-2,4G communication module 6-3,5G communication module 6-4, WIFI module
6-5, bluetooth module 7, video acquisition module 7-1, the first camera lens 7-2, the second camera lens 8, function light source module 8-1, illumination
Lamp 8-2, red eye 8-3, amber lamp 8-4, greensignal light 9, power module 9-1, charging circuit 9-2,
Protect circuit 9-3, battery pack 9-4, detection circuit 10, TYPE-C interface 11, TYPE-C intelligent recognition chip 12, positioning
Module 100, shell 101, first through hole 102, the second through-hole 103, third through-hole 104, fourth hole the 105, the 5th are logical
Hole 106, the 6th through-hole 107, the 7th through-hole 108, the 8th through-hole 109, the 9th through-hole 200, handle 300, boss.
[specific embodiment]
Clear and complete description is carried out to the technical solution of the utility model below in conjunction with attached drawing.Obviously, described
Embodiment is a part of the embodiment of the utility model, instead of all the embodiments.Based on the embodiments of the present invention, originally
The those of ordinary skill in field other embodiments obtained without making creative work belong to practical
Novel protection scope.
Referring to Fig.1-3, a kind of video acquisition terminal, the terminal include hand-held shell 100, are provided with processing in shell 100
Module 1, audio-frequency module 2, display module 3, Keysheet module 4, memory module 5, communication module 6, video acquisition module 7, function light
Source module 8 and power module 9 further include TYPE-C interface 10 and TYPE-C intelligent recognition chip 11.
Shell 100 is hollow housing, and shell 100 is for installing and all modules of fixed terminal.
Processing module 1 is responsible for the operation of the entire terminal of control, such as acquisition, the control command acquisition, number of audio/video information
According to storage and upload.
Audio-frequency module 2 is connected to processing module 1, to realize the mutual transmitting of data.Audio-frequency module 2 is for acquiring and exporting
Audio-frequency information.
Display module 3 is connected to processing module 1, to realize the mutual transmitting of data.Display module 3 is man-machine for terminal
Interaction.
Keysheet module 4 is connected to processing module 1, to realize the mutual transmitting of data.Keysheet module 4 refers to for inputting operation
It enables, with the operation of controlling terminal.
Memory module 5 is connected to processing module 1, to realize the mutual transmitting of data.Memory module 5 is for terminal data
Storage.
Communication module 6 is connected to processing module 1, to realize the mutual transmitting of data.Communication module 6 is external for terminal
Communication, terminal can realize the communication connection of terminal and other equipment by communication module 6.
Video acquisition module 7 is connected to processing module 1, to realize the mutual transmitting of data.Video acquisition module 7 is for adopting
Collect video information, and is sent to processing module 1.
Function light source module 8 is connected to processing module 1, to realize the mutual transmitting of data.Function light source module 8 can be at end
Illumination or signal identification are provided in the use process at end.
Power module 9 is used to provide stabilized power supply, the power output end and processing module 1 of power module 9 to entire terminal
Power input connection, power module 9 is by the connection relationships of processing module 1 and other intermodules to each composition of terminal
Module for power supply, power module 9 can also individually power to each module respectively, and this will not be repeated here.
TYPE-C interface 10 is connected to processing module 1, and connects with power module 9, for data transmission and charge and discharge.
TYPE-C intelligent recognition chip 11 is connected to YTPE-C interface 11 and processing module 1, for identification TYPE-C interface
The type of the peripheral apparatus of 10 connections.
Locating module 12 is connected to processing module 1, to realize the mutual transmitting of data.Locating module 12 is determined for terminal
Position provides location information to terminal.
Referring to Fig.1, shell 100 can be by being made of high impact polystyrene (HIPS) material.High impact polystyrene
(HIPS) dimensional stability is good after material impact-resistant, molding, high dielectric property insulation, is suitble to complicated severe operating environment.?
For convenient for grasping, handle is arranged in 100 rear end of shell of the flashlight tubular that shell 100 is integrally formed, flashlight tubular in the present embodiment
Hand 200 facilitates grasping.Shell 100 is integrally formed, and structural good, impact resistance and collision can increase the durability of terminal.?
In the present embodiment, for the installation convenient for audio-frequency module 2, video acquisition module 7, function light source module 8, shell 100 is close to handle
Be provided on the side wall of 200 one end first through hole 101, far from 200 one end of handle side wall on be provided with the second through-hole 102, shell
Third through-hole 103, fourth hole 104, fifth hole 105, the 6th through-hole 106 are provided on the end face of 100 front end of body, the 7th is logical
Hole 107 and the 8th through-hole 108 are equipped with boss 300, boss 300 on the side wall between first through hole 101 and the second through-hole 102
Bottom close to handle 100 is provided with Keysheet module 4, and the top of 100 front end of shell is provided with display module in boss 300
3.Shell 100 is equipped with the 9th through-hole 109 of installation TYPE-C interface 10 close to the side wall of display module 3.Shell 100 can also be
Other structures are to realize the function of shell 100 in the present embodiment, and this will not be repeated here.
Processing module 1 can be to be integrated with processor and other auxiliary IC chips and auxiliary electron component
Printed circuit board, different types of interface is provided on the printed circuit board, between processing module 1 and other modules
Communication connection or electrical connection, such as IC bus interface, serial bus interface and parallel bus interface.Printed circuit board can easily pacify
In shell 100, processing module 1 can be clamped on shell integrally formed with card slot and/or buckle etc. by the inside of shell 100
Inside body 100.For the volume for further reducing processing module 1, two layers or three layer circuit boards, Huo Zhegeng is can be selected in printed circuit board
The circuit board of multilayer, to reduce the volume of processing module 1.Processor of the preferred mobile phone CPU of processor as entire terminal, passes through
The database in software and calling memory module 5 in operation memory module 5 achievees the purpose that controlling terminal.Mobile phone CPU according to
Need can choose the general mobile phone CPU product of the manufacturers such as high pass, Huawei, Samsung, Lian Fake.Mobile phone CPU is small in size, operation
Speed is fast, is suitble to the terminal structure of small size, is also remarkably improved terminal capabilities.
Preferably, terminal further includes operating system, and operating system is stored in memory module 5, and operating system is preferably based on
The open source mobile phone operating system of Linux platform, android system.The platform is by operating system, middleware, user interface and answers
It is formed with software.User can call each component part in the terminal to complete specific behaviour by the application software in user interface
Make.Android system is widely applied in mobile phone, versatile using simple, convenient for users to study and operating terminal.
Referring to Figures 1 and 2, audio-frequency module 2 may include microphone 2-1 and sound equipment 2-2, and microphone 2-1 is for acquiring sound
Frequency information, sound equipment 2-2 is for playing audio-frequency information.Microphone 2-1 is embedded in the first through hole 101 of surface of shell, and sound equipment 2-2 is embedding
Enter in the second through-hole 102.In shell 100, microphone 2-1 is connected with processing module 1 by IC bus respectively with sound equipment 2-2,
Realize the mutual transmitting of audio data and sending and receiving for control command.The end face and shell of microphone 2-1 and sound equipment 2-2
100 sides do not influence the globality and aesthetics of shell 100 on the same face.First through hole 101 is located at the bottom of display module 3
End, the second through-hole 102 are located at the top of display module 3, not only make the compact-sized of terminal, but also be conducive to the acquisition of audio signal
And broadcasting, it is easy to use.
Referring to Fig.1, display module 3 is mounted on the boss 300 of 100 side wall of shell, 3 He of display module in shell 100
Processing module 1 is connected by parallel bus, realizes the mutual transmitting of data.Front end and the key of shell 100 is arranged in display module 3
Between disk module 4, it is integrally formed with shell 100, with the integrally formed display module 3 of shell 100, does not destroy the whole of shell 100
Body and aesthetics.Display module 3 is used for display terminal data and parameter, such as in the collection process of video information, shows mould
The video information that block 3 can acquired with real-time display watches for operator, and proofreads the accuracy of video information.Simultaneously
In the operating process of terminal, display module 3 can display terminal operation operation information, such as operational order, operating result, operation
The information such as state and Time of Day.
Preferably, display module 3 is touch screen, and touch screen can not only carry out the display of information and parameter, but also available
In the input of order, human-computer interaction is realized.The use of touch screen allows operator directly to carry out terminal by touch screen
Operation can simplify the structure of Keysheet module 4, or directly omit Keysheet module 4, be further simplified terminal structure.
Referring to Fig.1, Keysheet module 4 can be also possible to the combination of multiple keys for the keyboard of integral type.Keysheet module 4 is set
The bottom in boss 300 close to 200 front end of handle is set, Keysheet module 4 passes through 1 data connection of universal serial bus and processing module.It grabs
Keysheet module 4 facilitates thumb press close to thumb when handle 200, and such user can use a hand operating terminal, convenient
It uses.It is preferred that Keysheet module 4 is cross keyboard, keyboard is made of silica gel.Cross keyboard volume is small, is realizing operating function
Under the premise of, the space surface of shell 100 is saved, while the tailored appearance of shell 100 can be made smooth, key uses silica gel material
Material, comfort level is high, is conducive to pressing for a long time and uses.
Memory module 5 preferably includes read only memory ROM and random access memory ram, and read only memory ROM is for storing end
The runs software at end and collected audio and video information.It is interim when random access memory ram is used to store terminal operating
Data.Memory module 5 is integrated on the printed circuit board at 1 place of processing module, and is connected by universal serial bus and processing module 1
It connects.Preferably, it is additionally provided with extension card slot on the printed circuit board where processing module 1, can be inserted into extension storage card in card slot,
The preferred Micro SD card of extension storage card can select memory size for 4GB, 8GB, 16GB, 32GB etc. or bigger as needed
The storage card of memory.
Referring to Fig. 3, communication module 6 is used for the correspondence with foreign country of terminal, and preferred communication module 6 is wireless communication, communication module 6
One of bluetooth, WIFI, NFC, NB-IoT, 2G, 3G, 4G and 5G communication module or a variety of can be integrated with.Communication module 6 is arranged
In shell 100, it can be integrated on the printed circuit board where processing module 1, or be individually fixedly mounted in shell 100,
Communication module 6 is connected with processing module 1 by universal serial bus.Preferably, it is logical to be integrated with 3G communication module 6-1,4G for communication module 6
Believe module 6-2,5G communication module 6-3, WIFI module 8-4 and bluetooth module 8-5 totally five wireless communication modules, radio communication mold
Block is without hardware interface, under the premise of guaranteeing communication quality, reduces the exposed interface of terminal, increase terminal leakproofness,
Globality and aesthetics.Bluetooth module 8-5 can realize short-distance wireless communication between terminal and other equipment.WIFI module 8-4
Terminal is realized under large range of WIFI network with other equipment to wirelessly communicate, substantially reduce the communication of terminal at
This.3G communication module 6-1,4G communication module 6-2,5G communication module 6-3 makes terminal have telecommunication capabilities, 4G communication module
6-2 and 5G communication module 6-3 can realize that the remote high speed of terminal data is a large amount of and upload and download.
Referring to Fig.1, the front end of shell 100 is arranged in video acquisition module 7, facilitates acquisition video.Preferred video acquisition module 7
Including the first camera 7-1 being mounted in the 7th through-hole 107 and the second camera 7-2 being mounted in the 8th through-hole 108.?
In shell 100, video acquisition module 7 is connected by parallel bus and processing module 1, is realized the transmission of data and order and is connect
It receives.Dual camera can collect clearly image information.The single camera of high definition can also be used, to reduce the cost of terminal, be
Clearer picture is collected, three or more camera can also be used, and this will not be repeated here.
Function light source module 8 can provide floodlighting and different colours signal identification, and preferred function light source module 8 includes
Headlamp 8-1, red eye 8-2, amber lamp 8-3 and greensignal light 8-4.Headlamp 8-1 is mounted on third through-hole
In 103, red eye 8-2 is mounted in fourth hole 8-4, and amber lamp 8-3 is mounted in fifth hole 105, green
Signal lamp 8-4 is mounted in the 6th through-hole 106.Function light source module 8 is connected to processing module by IC bus in shell 100
1, the order that receiving processing module 1 is sent, to provide floodlighting and different colours signal identification.Processing module 1 can be controlled respectively
The light on and off of each lamp are made, each lamp can also be controlled by certain frequency and flashed, to provide different signal designations.Such as rather dark
When, headlamp 8-1 being opened by Keysheet module 4 and being illuminated, headlamp 8-1 can also be controlled when facing a danger by emergency frequency
Rate blinking illumination lamp.Integrating illumination intensity sensor, terminal illumination can be automatically opened according to the power of light in the terminal simultaneously
Lamp.Red, yellow, and green signal lamp can be opened simultaneously, can also individually open, and be used as unlike signal and indicate.Processing module 1 sends life
It enables to function light source module 8, to control the open and close and on-off mode of each signal lamp.
Referring to Fig. 2, power module 9 provides stabilized power supply for entire terminal, and power module 9 is rechargeable, is convenient for terminal
It is commonly used repeatedly, improves the applicability of terminal.Specific power module 9 includes charging circuit 9-1, protection circuit 9-2, battery
Group 9-3 and detection circuit 9-4.Charging circuit 9-1, protection circuit 9-2 and detection circuit 9-4 are connected with processing module 1 respectively.It fills
Circuit 9-1 connection TYPE-C interface 10, when TYPE-C 10 external power adapter of interface, control circuit 9-1 gives battery pack 9-
3 chargings.Protect the charge and discharge of circuit 9-2 protection battery pack 9-3.Detection circuit 9-4 detects the state of power module 9, and will be electric
The status information of source module 9 is sent to processing module 1, such as electricity, the temperature information of detection circuit 9-4 detection battery pack 9-3, hair
Processing module 1 is given, the specific information about power of terminal is provided the user with, reminds user to charge in time, avoids dallying over one's work, simultaneously
The temperature information for monitoring battery pack 9-3 prevents battery failure from damaging equipment.
TYPE-C interface 10 is mounted in the 9th through-hole 109, and TYPE-C intelligent recognition chip 11 is arranged in shell 100 simultaneously
It is connected to processing module 1.Power port in TYPE-C interface 10 connects charging circuit 9-1, and data port connects processing module
1.TYPE-C intelligent recognition chip 11 is connected to TYPE-C interface 10, carries out intelligence to the peripheral apparatus of access TYPE-C interface 10
Identification, judges that peripheral apparatus is power supply adaptor, memory or other communication linkages.If accessing TYPE-C interface 10
Peripheral apparatus be power supply adaptor, then control charging circuit 9-1 give battery pack 9-3 charging；If accessing TYPE-C interface 10
Be storage equipment, then by data port implementation data transmission.To avoid TYPE-C interface 10 from entering dust or liquid,
It is sealed between TYPE-C interface 10 and shell 100 with sealant, may also set up the lid (being not drawn into figure) of flexible connection, make
Used time cover cap closes on interface, and when use opens lid.
Locating module 12 is integrated on the printed circuit board where processing module 1, locating module 12 by serial bus and
Processing module 1 connects, to realize the mutual transmitting of data.Preferred orientation module 12 is Beidou/GPS dual-mode locating module, for eventually
End provides precise and stable location information.Preferred orientation module 12 is led using the N303 bimodulus of authority's microelectronics Science and Technology Ltd.
Navigate locating module, and a new generation that inside modules are integrated with authority's independent research can support BDSB1/GPSL1/GLONASSL1 frequency point
SOC base band+radio frequency one chip TD1030 provides high sensitivity, low-power consumption, low cost for the manufacture of navigation terminal product
Positioning/navigation solution.N303 internal integrated antenna detection circuit, power management function, low power consumption and low cost.N303 positioning
Module is communicated by serial ports with processing module 1, realizes data exchange.
In conclusion the embodiments of the present invention provide a kind of handheld video acquisition end with TYPE-C interface
End, including shell 100 is held, processing module 1 is provided in shell 100, audio-frequency module 2, display module 3, Keysheet module 4, is deposited
Store up module 5, communication module 6, video acquisition module 7, function light source module 8 and power module 9.
Shell 100 is flashlight tubular, and the front end of shell 100 is equipped with video acquisition module 7, and the rear end of shell 100 is equipped with
Handle 200 for grasping.The side wall of shell 100 is equipped with boss 300, and the upper end of boss 300 is equipped with display module 3, under
End is equipped with cross Keysheet module 5.Sound equipment 2-2 is installed in the front end side wall of shell 100, is set between Keysheet module 4 and handle 200
It is equipped with microphone 2-1.
The preferred touch screen of display module 3, can be used for the input of display and the order of information.Keysheet module 4 preferred structure letter
Single cross keyboard.Video acquisition module 7 is for acquiring image information, and user can pass through display under different network states
Different communication modules in 4 operating terminal open communication module 6 of module 3 or Keysheet module, by terminal and other equipment or
The forwarding upload of data, the software download of terminal and upgrading and the downloading of terminal system and upgrading are realized in internet connection.
Display module 3 can show the information about power and temperature information of power module 9, when not enough power supply, carry out to terminal
Charging, it can be achieved that terminal charging repeatedly, increase the durability of terminal.
In use, operator can by be arranged in the TYPE-C interface 10 of 100 side of shell by equipment and
Power supply adaptor and the connection of other electronic equipments, to realize the charging of terminal, data upload and downloading.
Above-described embodiment is merely to illustrate the technical solution of the utility model, rather than its limitations.The utility model is not
It is confined to be described above and the accurate structural illustrated in the accompanying drawings is, and it cannot be said that the specific implementation of the utility model is only limited to
In these explanations.For the utility model person of an ordinary skill in the technical field, the utility model structure is not being departed from
Under the premise of think of, the various changes and variants made all shall be regarded as belonging to the protection scope of the utility model.
Claims (10)
1. a kind of handheld video acquisition terminal with TYPE-C interface, including shell, power module, processing module, storage mould
Block, display module and video acquisition module, it is characterised in that: further include TYPE-C interface, the TYPE-C interface is separately connected
Processing module and power module.
2. video acquisition terminal according to claim 1, it is characterised in that: it further include TYPE-C intelligent recognition chip,
The peripheral apparatus that TYPE-C intelligent recognition chip automatic butt enters TYPE-C interface is identified.
3. video acquisition terminal according to claim 1 or 2, it is characterised in that: it further include communication module, the communication mould
Block is connected to processing module, the correspondence with foreign country for terminal.
4. video acquisition terminal according to claim 3, it is characterised in that: the communication module is WIFI module, bluetooth
One of module, NFC module, NB-IOT module, 3G communication module, 4G communication module and 5G communication module are a variety of.
5. according to claim 1,2,4 described in any item video acquisition terminals, it is characterised in that: it further include audio-frequency module, institute
It states audio-frequency module and is connected to the processing module, the audio-frequency module is for acquiring and/or exporting audio-frequency information.
6. according to claim 1,2,4 described in any item video acquisition terminals, it is characterised in that: it further include Keysheet module, institute
It states Keysheet module and is connected to the processing module, the Keysheet module is for inputting operation instruction.
7. according to claim 1,2,4 described in any item video acquisition terminals, it is characterised in that: it further include locating module, institute
It states locating module and is connected to processing module, for providing location information.
8. video acquisition terminal according to claim 7, it is characterised in that: the locating module is GPS and Beidou bimodulus
Locating module.
9. video acquisition terminal according to claim 1 or 2, it is characterised in that: further include function light source module, the function
Energy light source module is for illumination and/or signal identification.
10. video acquisition terminal according to claim 1 or 2, it is characterised in that: the shell is flashlight tubular.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821570604.XU CN209017149U (en) | 2018-09-26 | 2018-09-26 | A kind of handheld video acquisition terminal with TYPE-C interface |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821570604.XU CN209017149U (en) | 2018-09-26 | 2018-09-26 | A kind of handheld video acquisition terminal with TYPE-C interface |
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| CN209017149U true CN209017149U (en) | 2019-06-21 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112543276A (en) * | 2020-12-25 | 2021-03-23 | 云南九机信息技术有限公司 | Camera monitoring equipment convenient to data transmission |
-
2018
- 2018-09-26 CN CN201821570604.XU patent/CN209017149U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112543276A (en) * | 2020-12-25 | 2021-03-23 | 云南九机信息技术有限公司 | Camera monitoring equipment convenient to data transmission |
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