Analog camera - security nurse, hard support for the security industry for nearly half a century. Cheap and fast installation is its label. Although it is old, it still has a market share of 70-80% in the security market. However, the cruel reality has already burned eyebrows, and the constant intension of network monitoring has made its market share. Is losing ground. For this reason, companies relying on analog cameras as their main products are unwilling to stand still. In order to continue fighting, the industry has successively adopted 960H, HDCVI, cc HDTV and HD-MDI HD resolution upgrade solutions. In order to clarify many complex analog high-definition concepts, 10 knowledge points on analog high-definition have been organized for everyone to communicate and learn together.
NO1.HDCVI
The HDCVI product is a megapixel start and the effective output pixels of the 720P camera are all over one million pixels, which is twice that of the standard definition system. The 1080P camera has more than 2 million effective output pixels, which is 4 times that of the standard definition system. This directly determines the quality of the monitoring screen. And HDCVI million HD image can also transmit lossless distance of 500 meters. This is the patent of HDCVI technology.
The HDCVI system is a plug-and-play, simple, pure, real-time, delay-free transmission system. After the hardware lines are connected, the system can be used. It is one of the most simple and easy to use megapixel HD systems. IPC and SLOC systems not only need to connect hardware links, but also need to configure IP address addresses and set up gateways. IP address conflicts, IP address loss, network delay, packet loss, and browser versions are incompatible at the moment. Incompatibility and other software issues. In case of problems, the complexity and difficulty of solving the problems will increase a lot compared to the simple and pure HDCVI. Also because of the simplicity of the HDCVI system, the stability and reliability of the system are greatly guaranteed.
NO2.HD-TVI
TVI can convert digital signals to analog, which will increase transmission distance, reduce overall costs, and require less storage capacity. Its transmission distance through the coaxial cable can reach 300~500 meters. In addition, TVI can transmit CVBS 75-ohm analog signals and achieve 30fps 1,080P and 720P transmissions, which are difficult to achieve with other high-definition coaxial solutions. Users can even replace their analog cameras and DVRs with TVI cameras and DVRs to get a new 1080P system without any special knowledge or additional labor costs.
As an open solution, TVI is a future-oriented technology that is highly compatible and interoperable with other products. For example, TVIDVR is compatible with many other brands of 720P and 1080P cameras. This will provide many advantages for TVT's customers, especially in reducing inventory. TVT will be able to provide a cost-effective solution for the mid- to low-end market using coaxial cable; in contrast, HD-SDI locks in the high-end market.
NO3.960H
The 960H is a quasi-HD solution defined and developed by Techwell and Sony. The analog camera uses Sony's new generation 960 HCCD Sensor and Effio series solutions. The DVR uses Techwell's newly released TW9960 analog quasi-HD A/D. solution. The 960H has a resolution of 960 x 576 (PAL) or 960 x 480 (NTSC), corresponding to D1 (704 x 576), and its overall picture sharpness (detail) is improved by 30%.
Compared with network cameras, the 960H is undoubtedly difficult to reach in terms of definition, but as a high-end analog camera, its price is lower and the technology is more civilian. The price may be a competitive advantage for the future development of the 960H. With the high cost of HD-SDI and IP high-definition systems, the 960H product has found itself in the best position to cater to the market. From the investigation, the domestic first- and second-tier companies have basically joined the army of the 960H product line, which shows the charm of the market.
NO4.HD-AHD
The birth of AHD is to solve the limitations of transmission distance and resolution in HD-SDI products. According to the Huachuang era, the "Network Eye" AHD HD camera module can transmit up to 500 meters on a common 75-3 coaxial cable, making it the perfect choice for high-definition surveillance. At the same time, it expands the transmission bandwidth, realizes the ability to carry 720P/1080P resolution video, and inherits the advantages of analog surveillance. The video signal is not encoded, and the details of the original video are completely preserved. The result is a 38*38 standard board type that is easy to assemble into various shapes of the complete machine, creating personalized products that belong to businesses and customers, with a resolution of up to 1 million, 1.3 million pixels, and no loss of images. At the same time, it supports ICR infrared filter automatic switching and automatic color turning black function, to achieve day and night monitoring, to meet the needs of different monitoring environments, the transmission distance is far more than the HD-SDI system, the use of ordinary 75-3 coaxial cable can be It can carry out lossless transmission up to 500 meters. The operation is the same as that of traditional analog products. Plug and play is convenient and simple.
AHD image effect is high-definition, compatible with traditional analog hard disk recorders, convenient, not only suitable for banks, roads, hospitals and other places with high requirements for video surveillance, but also applies to general monitoring sites such as residential areas, supermarkets, and homes. It is practical and economical. The perfect combination is the ultimate experience of realizing high-definition citizenship.
NO5.ccHDtv
The HD CCTV system ccHDtv is a set of high-definition video surveillance system solutions developed for cameras, transmission technologies, and storage devices. It uses digital television technology to digitally decode high-definition video signals over coaxial cables and transmissions. On-line transmission can also be transmitted by wireless transmission; it has been proved that multi-channel 1080p30 or 1080p60 images can be easily transmitted simultaneously on a conventional 3C2V/RG59 coaxial cable via cc HDtv technology without repeaters. In the case of repeater assistance, the transmission distance can still be more than 500 meters. The ccHDtv signal is transmitted via broadcast using H.264 compression technology, which not only solves the difficulties of high-definition video transmission in CCTV CCTV systems, but also reduces the capacity requirements of the storage device, which will enable the surveillance system to be high-definition in image transmission and back-end storage. It becomes easy and easy. In engineering installation or operation, almost the same as traditional cctv systems, ccHDtv will be the best for users who want to pursue high-quality monitoring and are unwilling to rewire or have doubts about network stability. select.
NO6.HD-MDI
Digital HD surveillance mainly refers to IP and HD-SDI, and HD-MDI is a rising star. Until the past few years, MDI technology has been improved, but the supporting multi-channel DVRs, optical transceivers, and the matrix are still under development. In the industry, MDI is far less well-known than IP and SDI. This not only inspires the fighting spirit of the digital surveillance technology, but also perfects the application of the digital high-definition surveillance market.
Compared with the cost of the back-end equipment, MDI still wins the price. IP system adopts NVR+IPSAN storage, which has high cost and transparent price. HD-SDI adopts SDI encoder or DVR that can receive SDI. The equipment is scarce and the price is higher. The HD-MDI back end uses MDI receiving mode DVR. lowest.
NO7.HDCVI not to be confused with HD-SDI HDCVI technology has megapixel-level carrying capacity, including 1280H@25fps, 1280H@30fps, 1280H@50fps, 1280H@60fps, 1920H@25fps, 1920H@30fps six formats. The HDCVI technology's monitoring system can achieve lossless, non-delayed video and audio transmission and data communication between devices from high-definition cameras to high-definition DVRs, and ensures that high-definition video is reliably transmitted within 500 meters and beyond.
The HDCVI transmission distance is really farther than the HD-SDI, and the analog signal could have been communicated with the 5C-2V (75-5) coaxial cable without amplification. 125M, according to UOB's test report (written), HDCVI transmission Distance up to 500 meters.
NO8. Advantages and disadvantages of analog HD monitoring technology
It is undeniable that SDI real-time transmission also has its fatal flaw - distance. SDI is not suitable for long-distance transmission. Of course, long-distance transmission is not obligatory. Fiber-optic transmission can achieve long-distance transmission, but high-consumption products cannot be afforded by every project. This is one of the reasons why SDI cannot become mainstream surveillance.
The biggest drawback of analog surveillance lies in the image quality. In terms of general analog monitoring, the 700 line is already the ultimate in analog surveillance quality, and network surveillance images can reach 720P and 1080P. From SDI HD, achieving 1080P is certainly not a problem. However, today's IPC achieves 5 million pixels 60 frames of dynamic real-time high-definition, which is a factor that SDI cannot compete with.
NO9. Deciding on the Three Aspects of Analog HD Camera Sharpness
The definition of the camera is generally represented by the television line TVL, such as 480TVL, 540TVL, etc. The definition of 650TVL or more in the industry is called analog high definition. In general, there are three main aspects that determine the clarity of the camera: the CCD sensor, the ISP image signal processing unit, and the lens.
CCD: Although the camera's horizontal resolution can be increased from 540TVL to 560TVL through ISP optimization, the 650TVL required for analog high-definition still cannot be achieved because it is limited by the number of effective pixels in the CCD itself. Therefore, to realize an analog high-definition, CCD sensor Must use 960H.
ISP: The main functions of the ISP include demosaicing (image interpolation), 3A, gamma correction, image denoising, and wide dynamics. To support analog HD, the ISP must support 960 HCCDs to achieve horizontal resolution above 650 TVL.
Lens: The camera lens is the most critical equipment of the video surveillance system. The quality (indicator) of the camera lens directly affects the overall specifications of the camera. In order to meet the definition requirements, analog HD cameras should use megapixel lenses to achieve better results.
NO10.IP, HD-SDI In general, when comparing IP HD and HD-SDI and HD analog HD transmission distance problem <br> <br>, industry or contractors often at a distance of HD-SDI or analog IP to illustrate With the advantages and disadvantages of HD-SDI, but with the author's experience in engineering applications, there is no need to use these three types of transmission distances and the last-mile video format as the obstacles for system integration in HD monitoring requirements. Under a high-resolution common goal, there is no need to make reservations because of transmission problems.
With the current large-scale monitoring projects, due to the rapid development of optical fiber communication technology, the cost of optical fiber transmission monitoring systems has also been greatly reduced, so the application of optical fiber and optical transceivers in various high-definition monitoring systems is becoming more and more popular. It has been found that optical fibers have been widely used in various industrial monitoring systems. In addition, HD-SDI signal transmission in the surveillance system generally uses coaxial cable for short-distance transmission (about 100-200 meters). It can also use a repeater (Booster) to extend the transmission distance to 400-. 500 meters or so. If it is long-distance transmission in the network architecture, HD-SDI is currently the most common fiber-to-cable transmission by converting optical transceivers to Fiber. At the same time, in order to satisfy one-way or two-way transmission of multiplexed HD-SDI signals, optical transmission architectures are also available. Multi-channel optical wavelength division mode such as WDM/DWDM/CWDM is used to achieve transmission of HD-SDI or analog video signals over one channel. This allows analog and HD-SDI camera signals to reach 30-70. Kilometers.
NO1.HDCVI
The HDCVI product is a megapixel start and the effective output pixels of the 720P camera are all over one million pixels, which is twice that of the standard definition system. The 1080P camera has more than 2 million effective output pixels, which is 4 times that of the standard definition system. This directly determines the quality of the monitoring screen. And HDCVI million HD image can also transmit lossless distance of 500 meters. This is the patent of HDCVI technology.
The HDCVI system is a plug-and-play, simple, pure, real-time, delay-free transmission system. After the hardware lines are connected, the system can be used. It is one of the most simple and easy to use megapixel HD systems. IPC and SLOC systems not only need to connect hardware links, but also need to configure IP address addresses and set up gateways. IP address conflicts, IP address loss, network delay, packet loss, and browser versions are incompatible at the moment. Incompatibility and other software issues. In case of problems, the complexity and difficulty of solving the problems will increase a lot compared to the simple and pure HDCVI. Also because of the simplicity of the HDCVI system, the stability and reliability of the system are greatly guaranteed.
NO2.HD-TVI
TVI can convert digital signals to analog, which will increase transmission distance, reduce overall costs, and require less storage capacity. Its transmission distance through the coaxial cable can reach 300~500 meters. In addition, TVI can transmit CVBS 75-ohm analog signals and achieve 30fps 1,080P and 720P transmissions, which are difficult to achieve with other high-definition coaxial solutions. Users can even replace their analog cameras and DVRs with TVI cameras and DVRs to get a new 1080P system without any special knowledge or additional labor costs.
As an open solution, TVI is a future-oriented technology that is highly compatible and interoperable with other products. For example, TVIDVR is compatible with many other brands of 720P and 1080P cameras. This will provide many advantages for TVT's customers, especially in reducing inventory. TVT will be able to provide a cost-effective solution for the mid- to low-end market using coaxial cable; in contrast, HD-SDI locks in the high-end market.
NO3.960H
The 960H is a quasi-HD solution defined and developed by Techwell and Sony. The analog camera uses Sony's new generation 960 HCCD Sensor and Effio series solutions. The DVR uses Techwell's newly released TW9960 analog quasi-HD A/D. solution. The 960H has a resolution of 960 x 576 (PAL) or 960 x 480 (NTSC), corresponding to D1 (704 x 576), and its overall picture sharpness (detail) is improved by 30%.
Compared with network cameras, the 960H is undoubtedly difficult to reach in terms of definition, but as a high-end analog camera, its price is lower and the technology is more civilian. The price may be a competitive advantage for the future development of the 960H. With the high cost of HD-SDI and IP high-definition systems, the 960H product has found itself in the best position to cater to the market. From the investigation, the domestic first- and second-tier companies have basically joined the army of the 960H product line, which shows the charm of the market.
NO4.HD-AHD
The birth of AHD is to solve the limitations of transmission distance and resolution in HD-SDI products. According to the Huachuang era, the "Network Eye" AHD HD camera module can transmit up to 500 meters on a common 75-3 coaxial cable, making it the perfect choice for high-definition surveillance. At the same time, it expands the transmission bandwidth, realizes the ability to carry 720P/1080P resolution video, and inherits the advantages of analog surveillance. The video signal is not encoded, and the details of the original video are completely preserved. The result is a 38*38 standard board type that is easy to assemble into various shapes of the complete machine, creating personalized products that belong to businesses and customers, with a resolution of up to 1 million, 1.3 million pixels, and no loss of images. At the same time, it supports ICR infrared filter automatic switching and automatic color turning black function, to achieve day and night monitoring, to meet the needs of different monitoring environments, the transmission distance is far more than the HD-SDI system, the use of ordinary 75-3 coaxial cable can be It can carry out lossless transmission up to 500 meters. The operation is the same as that of traditional analog products. Plug and play is convenient and simple.
AHD image effect is high-definition, compatible with traditional analog hard disk recorders, convenient, not only suitable for banks, roads, hospitals and other places with high requirements for video surveillance, but also applies to general monitoring sites such as residential areas, supermarkets, and homes. It is practical and economical. The perfect combination is the ultimate experience of realizing high-definition citizenship.
NO5.ccHDtv
The HD CCTV system ccHDtv is a set of high-definition video surveillance system solutions developed for cameras, transmission technologies, and storage devices. It uses digital television technology to digitally decode high-definition video signals over coaxial cables and transmissions. On-line transmission can also be transmitted by wireless transmission; it has been proved that multi-channel 1080p30 or 1080p60 images can be easily transmitted simultaneously on a conventional 3C2V/RG59 coaxial cable via cc HDtv technology without repeaters. In the case of repeater assistance, the transmission distance can still be more than 500 meters. The ccHDtv signal is transmitted via broadcast using H.264 compression technology, which not only solves the difficulties of high-definition video transmission in CCTV CCTV systems, but also reduces the capacity requirements of the storage device, which will enable the surveillance system to be high-definition in image transmission and back-end storage. It becomes easy and easy. In engineering installation or operation, almost the same as traditional cctv systems, ccHDtv will be the best for users who want to pursue high-quality monitoring and are unwilling to rewire or have doubts about network stability. select.
NO6.HD-MDI
Digital HD surveillance mainly refers to IP and HD-SDI, and HD-MDI is a rising star. Until the past few years, MDI technology has been improved, but the supporting multi-channel DVRs, optical transceivers, and the matrix are still under development. In the industry, MDI is far less well-known than IP and SDI. This not only inspires the fighting spirit of the digital surveillance technology, but also perfects the application of the digital high-definition surveillance market.
Compared with the cost of the back-end equipment, MDI still wins the price. IP system adopts NVR+IPSAN storage, which has high cost and transparent price. HD-SDI adopts SDI encoder or DVR that can receive SDI. The equipment is scarce and the price is higher. The HD-MDI back end uses MDI receiving mode DVR. lowest.
NO7.HDCVI not to be confused with HD-SDI HDCVI technology has megapixel-level carrying capacity, including 1280H@25fps, 1280H@30fps, 1280H@50fps, 1280H@60fps, 1920H@25fps, 1920H@30fps six formats. The HDCVI technology's monitoring system can achieve lossless, non-delayed video and audio transmission and data communication between devices from high-definition cameras to high-definition DVRs, and ensures that high-definition video is reliably transmitted within 500 meters and beyond.
The HDCVI transmission distance is really farther than the HD-SDI, and the analog signal could have been communicated with the 5C-2V (75-5) coaxial cable without amplification. 125M, according to UOB's test report (written), HDCVI transmission Distance up to 500 meters.
NO8. Advantages and disadvantages of analog HD monitoring technology
It is undeniable that SDI real-time transmission also has its fatal flaw - distance. SDI is not suitable for long-distance transmission. Of course, long-distance transmission is not obligatory. Fiber-optic transmission can achieve long-distance transmission, but high-consumption products cannot be afforded by every project. This is one of the reasons why SDI cannot become mainstream surveillance.
The biggest drawback of analog surveillance lies in the image quality. In terms of general analog monitoring, the 700 line is already the ultimate in analog surveillance quality, and network surveillance images can reach 720P and 1080P. From SDI HD, achieving 1080P is certainly not a problem. However, today's IPC achieves 5 million pixels 60 frames of dynamic real-time high-definition, which is a factor that SDI cannot compete with.
NO9. Deciding on the Three Aspects of Analog HD Camera Sharpness
The definition of the camera is generally represented by the television line TVL, such as 480TVL, 540TVL, etc. The definition of 650TVL or more in the industry is called analog high definition. In general, there are three main aspects that determine the clarity of the camera: the CCD sensor, the ISP image signal processing unit, and the lens.
CCD: Although the camera's horizontal resolution can be increased from 540TVL to 560TVL through ISP optimization, the 650TVL required for analog high-definition still cannot be achieved because it is limited by the number of effective pixels in the CCD itself. Therefore, to realize an analog high-definition, CCD sensor Must use 960H.
ISP: The main functions of the ISP include demosaicing (image interpolation), 3A, gamma correction, image denoising, and wide dynamics. To support analog HD, the ISP must support 960 HCCDs to achieve horizontal resolution above 650 TVL.
Lens: The camera lens is the most critical equipment of the video surveillance system. The quality (indicator) of the camera lens directly affects the overall specifications of the camera. In order to meet the definition requirements, analog HD cameras should use megapixel lenses to achieve better results.
NO10.IP, HD-SDI In general, when comparing IP HD and HD-SDI and HD analog HD transmission distance problem <br> <br>, industry or contractors often at a distance of HD-SDI or analog IP to illustrate With the advantages and disadvantages of HD-SDI, but with the author's experience in engineering applications, there is no need to use these three types of transmission distances and the last-mile video format as the obstacles for system integration in HD monitoring requirements. Under a high-resolution common goal, there is no need to make reservations because of transmission problems.
With the current large-scale monitoring projects, due to the rapid development of optical fiber communication technology, the cost of optical fiber transmission monitoring systems has also been greatly reduced, so the application of optical fiber and optical transceivers in various high-definition monitoring systems is becoming more and more popular. It has been found that optical fibers have been widely used in various industrial monitoring systems. In addition, HD-SDI signal transmission in the surveillance system generally uses coaxial cable for short-distance transmission (about 100-200 meters). It can also use a repeater (Booster) to extend the transmission distance to 400-. 500 meters or so. If it is long-distance transmission in the network architecture, HD-SDI is currently the most common fiber-to-cable transmission by converting optical transceivers to Fiber. At the same time, in order to satisfy one-way or two-way transmission of multiplexed HD-SDI signals, optical transmission architectures are also available. Multi-channel optical wavelength division mode such as WDM/DWDM/CWDM is used to achieve transmission of HD-SDI or analog video signals over one channel. This allows analog and HD-SDI camera signals to reach 30-70. Kilometers.
1.ideal tool for furniture manufacture
2.With Bigger Cylinder designing,more powerful
3.High performance and low maintenance
4.Comfort rubber handle minimize operator's fatigues
5.360 degree exhaust cover
6.T Brad Nailers Series is the ideal tool for upholstery and furniture manufacture.
7High performance and low maintenance.
100% spare parts can be offered to you!
T Brad Nailers
T Brad Nailers,Brad Nailer,Electric Brad Nailer,Pneumatic Nailer
DAHOO Tools Co., Ltd. , http://www.dahootools.com