CN205584318U - USB high definition meeting camera - Google Patents
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Abstract
The utility model discloses a USB high definition meeting camera, including the PCB board, be provided with on the PCB board be used for to the video signal decode's of input LVDS coding module, with the LVDS coding module be connected and be used for handling the video signal after decoding after be distributed to USB video coding chip FPGA video data processing module, be used for exporting USB video signal's USB video coding chip and the MCU decode 0 who disposes and coordinate each module to video signal encode, and, corresponding USB video coding chip, it still is provided with a USB3.0 interface. The utility model discloses a USB3.0 interface direct output high quality, high -resolution high definition image can lug connection PC ends, compatible high to, need not to use high definition image acquisition card PCI, reduce use cost.
Description
Technical field
This utility model relates to mechanics of communication, in particular a kind of USB high-definition conference camera.
Background technology
Video conference is to utilize existing communication net (including various transmission network) and numeral Signal Compression treatment technology, passes to far-end, it is achieved aspectant exchange after audio frequency and video and data signal being processed.Its form of communication is point-to-point, point-to-multipoint and multi-multipoint.Capital equipment includes MCU multipoint control unit, video conference camera, gateway, gateway and relevant supporting peripheral, such as display device, sound system etc..The appearance of video conferencing system has changed traditional conference model and has brought deep change to socic-economic field.In recent years, along with developing rapidly of computer technology, communication technology and Internet technology, the range of application of video conference is the most gradually expanded to the domestic consumers such as medium-sized and small enterprises and personal user from high-end users such as traditional professional field, large enterprises, and along with China's economy growth continuously and healthily in recent years, this expansion speed presents again the trend of constantly quickening.One of visual plant as video conferencing system, the video conference camera demand of responsible front-end image acquisition function are also increasing.
Along with people are more and more higher to the requirement of picture quality, traditional SD image can not meet the most far away daily requirement, particularly at aspects such as tele-medicine, remote teaching, television broadcasting, then, high-definition image arises at the historic moment, and current high definition 720P, 1080I are the most in large-scale application, according to statistics, current HD video occupies the share of 30%, and is increasing with the speed of 20% every year.
At present, the producer of HD video meeting camera, external predominantly Sony, Panasonic, Polycom etc., domestic predominantly Huawei, in emerging, tomorrow, Haikang, big China etc., among these producers, it is a class with Sony, Panasonic, they have grasped the core technology of video camera, the Sensor technology of image acquisition, the advantages such as picture quality is good, resolution is high, color reducibility is good, in terms of The Cloud Terrace, they use brush DC current technique, it is being accurately positioned and quiet aspect is made very outstanding, therefore in the competition in terms of quality, is occupying bigger advantage.A remaining class, the most domestic video camera producer, main outsourcing Sony, Panasonic, Sanyo, the integrated movement of Samsung, oneself it is responsible for the back-end processing of image, such as video format conversion, the design of OSD menu, the design etc. of video output interface.Oneself designs outward appearance, structure, and cradle head part then uses high-precision step motor control, meets requirement being accurately positioned aspect, the most inadequate at quiet aspect, but fashionable appearance, rich interface, moderate cost, the most deeply welcome by consumers in general.
The framework of current Software Videoconferencing System is mainly common PC and adds high definition video conference camera and add high definition video frequency collection card, and image acquisition is responsible for by video camera, and capture card is responsible for the conversion of data-interface, PC be responsible in control.In the application, high definition capture card expensive, take around about 2000 yuan, bring no small economic pressures to client, also due also to the compatibility of capture card, bring the inconvenience of use to client.
High definition capture card operation principle is to be converted to digital signal by analogue signal after A/D samples, by FPGA write SDRAM as caching, from SDRAM, the data read-out of collect and process is transferred to host computer by pci bus through FPGA again, host computer is transmitted waiting process to data.Signal is acquired supporting the synchronous recording of sound in real time, display picture can optionally stretch or full frame, after recording, form is avi, ensure to adapt to all kinds of player plays, the recording later stage can carry out non-thread volume, deleting or add related content, display picture color and definition are adjustable, record frame per second and code check is adjustable.
Image can be directly gathered to video memory or host computer system internal memory through high-speed PCI bus, in addition it is possible not only to make image directly collect, realize single screen working method, and the extensibility of PC internal memory can be utilized, realize the sequence image continuous acquisition frame by frame of requirement, carry out Image sequence processing analysis.If showing and gather signal on another PC by PC data, traditional method is that by video converter signal become video signal, then is stuck on another PC by video acquisition and shows collection.Video acquisition is exactly that by process, the analogue signal of video source is transformed into digital signal (i.e. 0 and 1), and the process these digital informations being stored on computer hard disc.The transformation of this analog/digital is to be carried out by the acquisition chip on video frequency collection card.First PC send out one start acquisition and etc. interruption, then capture card can synchronize to start by probe field, then start and gather a pictures (according to row field blanking and size), collection passes through PCI interrupt notification pc machine after terminating, and PC is had no progeny in receiving a bit, start DMA at once and read the data (having only to get out memory address and read size) of capture card, read complete i.e. completing and once gather.Digital signal is converted analog signals into by video capture processor, it is then passed in the temporary memory that board carries, again by carrying video compress chip execution compression algorithm on card, huge video signal compression is diminished, PCI, storage to hard disk is entered directly or by pci bridge chip after these compressions last.
High definition capture card has high stability, the feature such as extensively multi-functional, compatible.It is to aim at video conference, remotely monitoring, the Web-based instruction, net cast, large screen display, medical system, the high definition video collecting card of military radar contour clear stream field of media release.Use the various corresponding video signal sources of Real-time Collection such as high-definition interface HDMI, component, support 480p, 720p, 1080i and 1080p contour sorting resolution, compatible various vision operation editor's parts, make the advantages such as whole multimedia system image quality height, low cost, low in energy consumption, stable performance, complete function.
But, use high definition video collecting card to the following drawback that:
1, inconvenience is used
During installation cumbersome, it is necessary to take cabinet apart and just can install, and also easily clash with other computer equipments when installing software, be vulnerable to the electromagnetic interference of computer internal component, cause its play quality to decline.
2, scope is limited
Owing to being PCI slot, so must be that desktop computer can use, for the computer of notebook etc, the most helpless.
3, expensive
High-definition image capture card PCI inputs due to the video signal of the interfaces such as support HD-SDI, HDMI, VGA, thus expensive, the most thousand of.
Therefore, prior art existing defects, need to improve.
Utility model content
Technical problem to be solved in the utility model is: provides and a kind of can be directly connected to PC end, the USB high-definition conference camera that compatible high, use cost is relatively low.
The technical solution of the utility model is as follows: a kind of USB high-definition conference camera, including pcb board, pcb board is provided with for the LVDS coding module of the decoding video signal of input being connected and is distributed to after processing decoded video signal the FPGA video data processing module of USB video coding chip with LVDS coding module, for the USB video coding chip that encoding video signal is exported USB video signal and the MCU control module each module being configured and coordinating；Further, corresponding USB video coding chip, it is additionally provided with a USB3.0 interface.
It is applied to technique scheme, in described USB high-definition conference camera, FPGA video data processing module is provided with the video data format correction module and the USB2.0 module being connected with video data format correction module and USB3.0 module that the video format identification module being connected with LVDS coding module is connected with video format identification module.
It is applied to each technique scheme, in described USB high-definition conference camera, FPGA video data processing module is provided with an EP3C10E144C8 chip, and MCU control module is provided with PIC18FJ10 chip, further, USB video coding chip is set to USB3014 chip.
It is applied to each technique scheme, in described USB high-definition conference camera, MCU control module is additionally provided with a vertical control circuitry and a horizontal control circuitry, wherein, vertical control circuitry and horizontal control circuitry are corresponding respectively to be driven by vertical motor and horizontal rotor, and is connected with outside camera lens by belt respectively.
Being applied to each technique scheme, in described USB high-definition conference camera, MCU control module is additionally provided with RS-485 and RS-232C RCI.
Being applied to each technique scheme, in described USB high-definition conference camera, LVDS coding module is provided with THC63LDV104C chip, H57V2562GIR chip, EPCS16SI16N chip, jtag interface and AS mode interface.
Use such scheme, after this utility model is by arranging LVDS coding module and being decoded HD video, FPGA video data processing module is distributed to USB video coding chip after processing the most again, by USB3.0 interface outputting high quality, high-resolution high-definition image, PC end, compatible height can be directly connected to, and, it is not necessary to use high-definition image capture card PCI, reduce use cost.
Accompanying drawing explanation
Fig. 1 is overall structure block diagram of the present utility model；
Fig. 2 is the FPGA video data processing module structured flowchart in this utility model；
Fig. 3 is the structured flowchart of USB3.0 module in this utility model；
Fig. 4 is the functional diagram of the MCU control module in this utility model.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, this utility model is described in detail.
Present embodiments provide a kind of USB high-definition conference camera, the present embodiment USB high-definition conference camera is that 10 times of USB3.0 video conference cameras of high definition install high definition all-in-one, use 1/2.5 inch of HD cmos image sensor, built-in 10 Zoom Lens camera lenses, valid pixel reaches 2,000,000, both can pass through USB3.0 interface outputting high quality, high-resolution high-definition image.It installs high-precision quiet motor, can realize quiet moving at a high speed/pitching and operate and carry out the object shooting of extensive area, and providing the unique functions such as automatic scanning, boundary scan.It preserves 64 default positions, 4 cruise paths, can carry out being accurately positioned and automatic cruising.Its built-in small-scale operating system, software can carry out remote upgrade.
Wherein, USB3.0 high-definition conference camera includes pcb board, pcb board is arranged on inside USB3.0 high-definition conference camera, as shown in Figure 1, the LVDS coding module for the decoding video signal to input it is provided with on pcb board, wherein, LVDS coding module LVDS coding module is provided with THC63LDV104C chip, H57V2562GIR chip, EPCS16SI16N chip, jtag interface and AS mode interface, LVDS coding module is connected with FPGA video data processing module, FPGA video data processing module processes proceeding through the video data that LVDS coding module is decoded.
As shown in Figure 2, FPGA video data processing module is provided with the video data format correction module and the USB2.0 module being connected with video data format correction module and USB3.0 module that the video format identification module being connected with LVDS coding module is connected with video format identification module, wherein, HD video data stream is sampled by the LVDS decoding chip in LVDS coding module, issuing FPGA video data processing module, the module in its center is to need to realize at FPGA internal logic.Video format identification module receives LVDS data, synchronizes H, field synchronization V and FLD signal according to row, identifies the video output formats of current movement；Then video data is through form rectification module, adjusts the sequential of H, V and generates data enable DE signal, being the BT1120 formatted data of standard from rectification module data out；BT1120 video data can be directly connected to USB2.0 and USB3.0 module and carry out data process, and these process generation and the packing storage etc. including different resolution image；Afterwards through USB video format correction module, the form as requested of the video data after processing is sent to the USB video coding chip of outside.FPGA program module also includes the process of clock zone, the storage of OSD character and control is called, remote upgrade module etc..
As it is shown in figure 1, FPGA video data processing module is provided with an EP3C10E144C8 chip, FPGA internal logic is realized by EP3C10E144C8 chip, and, MCU control module is provided with PIC18FJ10 chip, and, USB video coding chip is set to USB3014 chip.
Wherein, USB video coding chip is for the USB3.0 interface arriving encoding video signal output USB video signal, so, PC end can be directly connected to by USB3.0 interface, and HD video data are sent to PC end, HD video data are directly transmitted by PC, thus without high-definition image capture card PCI, it is directly connected to PC by USB3.0 interface, eliminate the cost of high-definition image capture card PCI, use cost reduces, and, it is additionally provided with the MCU control module being connected with FPGA video data processing module, MCU control module is used for realizing configuring each module and coordinating.
Wherein, as shown in Figure 4, MCU control module can realize receiving the signal from IR remote controller the functional block diagram of MCU control module, it is decoded into corresponding order and performs；Receive the VISCA agreement of VISCA interface, PELCO_D agreement and decode；By I2C Interface Controller movement zoom, zoom etc.；Communicated with FPGA by UART serial ports, show OSD menu；Control level, vertical motor operation are also accurately positioned；According to toggle switch, baud rate, agreement, ball machine address, control mode etc. are set；Input according to limit switch determine level, vertical direction spacing；Control power lights, the light on and off of dormancy lamp；Remote upgrade is carried out by VISCA agreement.
As it is shown on figure 3, the design structured flowchart that Fig. 3 is USB3.0 module, in fpga logic designs, video format is corrected to be needed to adjust according to 861 sequential on the premise of knowing current video form.For USB3.0, difficult point is matching and the standard degree of field row synchronization of speed.USB3.0 HD video requires that time delay is the least, so simply using the internal fifo of wired FPGA in storage to do caching process.
Or, as shown in Figure 1, MCU control module is additionally provided with a vertical control circuitry and a horizontal control circuitry, wherein, vertical control circuitry and horizontal control circuitry are corresponding respectively to be driven by vertical motor and horizontal rotor, and is connected, so with outside camera lens by belt respectively, can be seen the image of above-below direction different angles by camera lens, therefore camera lens must be able to rotate in above-below direction different angles.During rotation, rotated by belt transmission camera lens by motor vertical, by master control circuit controls electric machine rotation；And it is possible to seen the image of left and right directions different angles by camera lens, therefore camera lens must be able to rotate in left and right directions different angles.During rotation, rotated by belt transmission camera lens by horizontal motor, by master control circuit controls electric machine rotation.
Further, MCU control module is additionally provided with RS-485 and RS-232C RCI, and it by VISCA, PELCO-D agreement, can carry out remote high-speed Communication Control to video camera respectively.
These are only preferred embodiment of the present utility model, be not limited to this utility model, all any amendment, equivalent and improvement etc. made within spirit of the present utility model and principle, within should be included in protection domain of the present utility model.
Claims (6)
1. a USB high-definition conference camera, including pcb board, it is characterised in that:
It is provided with on pcb board for the LVDS coding module of the decoding video signal of input being connected and is distributed to after processing decoded video signal the FPGA video data processing module of USB video coding chip with LVDS coding module, for the USB video coding chip that encoding video signal is exported USB video signal and the MCU control module each module being configured and coordinating；
Further, corresponding USB video coding chip, it is additionally provided with a USB3.0 interface.
USB high-definition conference camera the most according to claim 1, it is characterised in that: FPGA video data processing module is provided with the video data format correction module and the USB2.0 module being connected with video data format correction module and USB3.0 module that the video format identification module being connected with LVDS coding module is connected with video format identification module.
USB high-definition conference camera the most according to claim 1, it is characterized in that: FPGA video data processing module is provided with an EP3C10E144C8 chip, MCU control module is provided with PIC18FJ10 chip, and, USB video coding chip is set to USB3014 chip.
USB high-definition conference camera the most according to claim 1, it is characterized in that: MCU control module is additionally provided with a vertical control circuitry and a horizontal control circuitry, wherein, vertical control circuitry and horizontal control circuitry are corresponding respectively to be driven by vertical motor and horizontal rotor, and is connected with outside camera lens by belt respectively.
USB high-definition conference camera the most according to claim 1, it is characterised in that: MCU control module is additionally provided with RS-485 and RS-232C RCI.
USB high-definition conference camera the most according to claim 1, it is characterised in that: LVDS coding module is provided with THC63LDV104C chip, H57V2562GIR chip, EPCS16SI16N chip, jtag interface and AS mode interface.
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| CN201521067420.8U CN205584318U (en) | 2015-12-21 | 2015-12-21 | USB high definition meeting camera |
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| CN201521067420.8U CN205584318U (en) | 2015-12-21 | 2015-12-21 | USB high definition meeting camera |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108881137A (en) * | 2017-10-10 | 2018-11-23 | 北京视联动力国际信息技术有限公司 | A kind of processing method of multi-medium data and view networked terminals |
| CN112312002A (en) * | 2019-07-31 | 2021-02-02 | 成都国皓科技有限公司 | High-definition course recording and displaying system |
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2015
- 2015-12-21 CN CN201521067420.8U patent/CN205584318U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108881137A (en) * | 2017-10-10 | 2018-11-23 | 北京视联动力国际信息技术有限公司 | A kind of processing method of multi-medium data and view networked terminals |
| CN112312002A (en) * | 2019-07-31 | 2021-02-02 | 成都国皓科技有限公司 | High-definition course recording and displaying system |
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