AHD, CVBS, USB camera modules, you do not know the key differences!
Signal type and image quality:
· AHD (Analog High Definition) camera module: belongs to the analogue high-definition signal type. Higher image resolution, usually up to 720p or even 1080p, can present a clear, detailed image, detail performance is relatively good, in the analogue camera has a high level of image quality.
· CVBS (Composite Video Baseband Signal) Camera Module: It is the traditional composite video baseband signal, its resolution is relatively low, usually 720x576 pixels in PAL format or 720x480 pixels in NTSC format, the image quality is relatively poor, the colour reproduction and clarity are not as good as that of AHD camera module.
· USB camera module: belongs to one kind of digital camera, transmits digital signals. The image quality depends on the camera's sensor and image processing chip, etc. Generally speaking, USB camera module can provide higher image quality and can support higher resolution, such as HD, Full HD or even higher resolution.
Transmission distance and stability:
· AHD camera module: has certain advantages in transmission distance, can effectively extend the transmission distance, and in long-distance transmission, the image quality can still maintain relatively clear, anti-interference ability is also stronger, using more advanced modulation and demodulation technology, can reduce the image distortion caused by interference1.
· CVBS camera module: the transmission distance is subject to certain limitations, the signal is prone to attenuation during long-distance transmission, resulting in blurred images or completely unable to display, and is more affected by strong electromagnetic interference, prone to splash screen, interference streaks and other problems1.
· USB camera module: data transmission through the USB interface, the transmission speed is faster and stable, but the transmission distance is relatively short, generally applicable to the connection of devices in close proximity, such as computer cameras, video conferencing cameras and so on.
Application Scenario:
· AHD camera module: suitable for monitoring environments with high requirements for image quality, such as shops, large office buildings, public places, etc., widely used in the field of security monitoring1.
· CVBS camera module: commonly used in places with low image quality requirements and low cost, such as some old monitoring systems, residential access control systems, simple reversing camera systems, etc.
· USB camera module: widely used in video conference, real-time monitoring, remote operation, computer camera, face recognition and other scenes that need to be connected with computer or other digital devices.
Cost:
· AHD camera module: its cost is relatively high as it requires higher quality sensors and processors to achieve HD effect, but with the development of technology and competition in the market, the price has gradually decreased.
· CVBS camera module: as a more traditional technology, the cost is relatively low, suitable for cost-sensitive application scenarios.
· USB camera module: the price varies according to the brand, performance and function, generally speaking, the price of ordinary USB camera module is relatively more affordable, but some high-performance USB camera module with special functions may have a higher price.
Our company (Au-star) has been developing custom camera modules for more than 10 years. There are a large number of AHD CVBS USB camera modules, such as QQSJ-CV08 (AHD 1080P); QQSJ-CV04 (AHD TVI CVI CVBS 4-in-1 coaxial 1080P); QQSJ-9069 (USB/AHD 1080P); QQSJ-9045 (USB 1080P); QQSJ-9025 ( USB 1080P); QQSJ-8925 (USB 2K); QQSJ-8890 (USB 4K) and so on; need to contact us at any time to buy; factory direct sales, support custom!
Signal type and image quality:
· AHD (Analog High Definition) camera module: belongs to the analogue high-definition signal type. Higher image resolution, usually up to 720p or even 1080p, can present a clear, detailed image, detail performance is relatively good, in the analogue camera has a high level of image quality.
· CVBS (Composite Video Baseband Signal) Camera Module: It is the traditional composite video baseband signal, its resolution is relatively low, usually 720x576 pixels in PAL format or 720x480 pixels in NTSC format, the image quality is relatively poor, the colour reproduction and clarity are not as good as that of AHD camera module.
· USB camera module: belongs to one kind of digital camera, transmits digital signals. The image quality depends on the camera's sensor and image processing chip, etc. Generally speaking, USB camera module can provide higher image quality and can support higher resolution, such as HD, Full HD or even higher resolution.
Transmission distance and stability:
· AHD camera module: has certain advantages in transmission distance, can effectively extend the transmission distance, and in long-distance transmission, the image quality can still maintain relatively clear, anti-interference ability is also stronger, using more advanced modulation and demodulation technology, can reduce the image distortion caused by interference1.
· CVBS camera module: the transmission distance is subject to certain limitations, the signal is prone to attenuation during long-distance transmission, resulting in blurred images or completely unable to display, and is more affected by strong electromagnetic interference, prone to splash screen, interference streaks and other problems1.
· USB camera module: data transmission through the USB interface, the transmission speed is faster and stable, but the transmission distance is relatively short, generally applicable to the connection of devices in close proximity, such as computer cameras, video conferencing cameras and so on.
Application Scenario:
· AHD camera module: suitable for monitoring environments with high requirements for image quality, such as shops, large office buildings, public places, etc., widely used in the field of security monitoring1.
· CVBS camera module: commonly used in places with low image quality requirements and low cost, such as some old monitoring systems, residential access control systems, simple reversing camera systems, etc.
· USB camera module: widely used in video conference, real-time monitoring, remote operation, computer camera, face recognition and other scenes that need to be connected with computer or other digital devices.
Cost:
· AHD camera module: its cost is relatively high as it requires higher quality sensors and processors to achieve HD effect, but with the development of technology and competition in the market, the price has gradually decreased.
· CVBS camera module: as a more traditional technology, the cost is relatively low, suitable for cost-sensitive application scenarios.
· USB camera module: the price varies according to the brand, performance and function, generally speaking, the price of ordinary USB camera module is relatively more affordable, but some high-performance USB camera module with special functions may have a higher price.
Our company (Au-star) has been developing custom camera modules for more than 10 years. There are a large number of AHD CVBS USB camera modules, such as QQSJ-CV08 (AHD 1080P); QQSJ-CV04 (AHD TVI CVI CVBS 4-in-1 coaxial 1080P); QQSJ-9069 (USB/AHD 1080P); QQSJ-9045 (USB 1080P); QQSJ-9025 ( USB 1080P); QQSJ-8925 (USB 2K); QQSJ-8890 (USB 4K) and so on; need to contact us at any time to buy; factory direct sales, support custom!