smooth transition from CVBS to Full-HD

Updated: May 20, 2021

skoopia is your partner to move from CVBS to Full HD (AHD/TVI) 1080p30/25.

This is an excerpt from a presentation on which this blog is based. It describes the skoopia AHD product portfolio, but also the interaction between the different units.

skoopia understands that the transition from CVBS to Full HD has more implications than just having a higher resolution sensor. The following items are considered:

  • latency requirements

  • cable length, sliprings and video transmission band width

  • cabling diversity

  • aspect ratio change from 4:3 to 16:9 for camera and monitor

  • camera control

  • recording and overlays in recording unit

All above aspects are covered by the skoopia portfolio. Continue reading to find out that skoopia has a solution for all potential obstacles in moving from CVBS to Full-HD.

skoopia pushes the AHD video format as the step up to Full-HD resolution. Why? Solutions making use of CVBS have -so far- remain using CVBS for the following reasons:

  • low latency

  • low band width / long cabling solutions

  • multiple cabling options available

  • native signal can be displayed directly on monitor

Both AHD and TVI offer low latency, multiple cabling options and nowadays also monitors

displaying native AHD/TVI are available. However, skoopia pushes AHD because:

  • AHD offers lower band width compared to TVI for the same video signal

  • AHD native supplier -NextChip- provides superior support on the DSP, while native supplier of TVI (HikVision) is unaccessible for DSP support questions.

Note: CVI (proprietary Dahua) is also reported as an alternative. Where TVI can be licensed from HikVision, CVI is really proprietary and has several other issues. Although AHD and TVI are not compatible, the vast majority of DSPs supports both formats, whereas, CVI is not always supported, and rarely to the same extend, leading to inferior image quality and lack of camera control.

In the above picture you find the solution space of skoopia for AHD. All AHD solutions are industrial AHD solutions, providing:

The centre of the AHD solution space if formed by the AHD/TVI/CVBS Digital Video Recorder, called the D20AT-1. All other skoopia cameras and monitors are supported by this DVR.

skoopia's industrial AHD camera portfolio consist of 5 different cameras:

  • the very small 22mm x 26mm single board Full-HD AHD camera - called 21C26AT

  • the extremely small 14mm x 14mm single board Full-HD AHD camera - called 21C14AT

  • the small Full-HD AHD 10x optical zoom block camera - called 20Z10S-NF

  • the Full-HD AHD 20x optical zoom block camera - called 20Z20A

  • the Full-HD AHD 30x optical zoom block camera - called 20Z30A

skoopia's monitors ranging from 2.5" till 56" all have HDMI input, but also can be extended with CVBS in/out, or even more suitable AHD/TVI/CVBS in/out having auto-detection of the incoming video signal.

In the first part of the underneath section we will discuss the advantages of skoopia industrial AHD video solutions as stand-alone unit. In the second part, we will discuss the advantages of integration of skoopia industrial AHD solutions, offering you insights in moving your entire video solution chain to AHD.

Finally, all skoopia industrial AHD video solutions provide the skoopia product life cycle promise:

  • cameras, DVRs and monitors will be available for 5+ years

  • replacement products will adhere to form, fit and function

  • upgrade or next generation products will meet form and firt, but will offer additional functions.

skoopia's single channel industrial AHD/TVI/CVBS digital video recorder (DVR) - called D20AT-1) provides unique features focused on operator based video recording.

Operator based video recording is quite different from the video recording done for security or observation purposes. Security/observation recording is primarily done so one can determine what has happened afterwards, whereas operator based video recording supports the operator in operation. As such, all video input provided by the cameras (recorded and unrecorded) is viewed by the user of the DVR.

Therefore, the DVR is purposefully a single channel DVR.

  • It makes the operation via the GUI (Graphical User Interface) significantly more easy as all operations take effect on 1 camera supplying the image.

  • Productivity of the user is further enhanced offering direct control buttons for Record/Pauze/Stop and Snapshot.

Overlay functions can be pre-set so that:

  • Distance is displayed as an overlay (meter read)

  • Project name

  • Company name

  • Date/time

are automatically displayed during operation (in each corner, info per corner can be set).

Time dependent additional information can be set, such as:

  • Project description

  • Commenting

for which commenting will be placed centrally in the screen to secure the reviewers of the video have a clear indication of issues found by the operator.

The industrial AHD DVR offers the possibility to export video via FTP or USB thumb drive. Selection of the relevant video and images is straightforward, by searching for project name.

The digital video recorder D20AT-1 supports touch screens from skoopia, and uniquely allows you to set the overlay position dependent on the aspect ratio of your monitor (so 4:3 monitors will have the overlay position set slightly more to the inner). Yet, the DVR continues to record the video in 16:9, as a Full-HD video should be.

Benefits of using a 4:3 monitor for Full HD video:

  • No need to re-engineer a portable suit case

  • Limit the weight of the portable suit case, if information outside of the 4:3 monitor is not/less relevant for operator support.

Details on the benefits of skoopia 4:3 monitors with zoomed panorama view can be found in the section on industrial monitors at the bottom of this blog.

skoopia has introduced two types of small, cost-effective single board AHD cameras.

The first camera is called the 21C26AT, a 22mm by 26mm industrial camera with the very sensitive Sony Starvis Exmor R (IMX290) sensor and best in class digital signal processor for AHD/TVI/CVBS (Nextchip). The result is an great image quality over easy long distance wiring, finding its purpose in primarily in industrial camera applications providing a cost effective and productive solution in any setting where CVBS cabling can be re-used.

Key specifications of the 21C26AT industrial camera

  • Selectable Full HD AHD/TVI (1080p30/25, 720p60/50/30/25) or CVBS (4:3 or 16:9) NTSC & PAL output

  • Sony Starvis Exmor R - IMX290 sensor (1/2.8")

  • 22 mm by 26 mm single board industrial camera

  • 4,5 - 15 V (parity protection)

  • Parallel Pelco-D / VISCA via RS485

  • No latency

  • One-command-customization

  • Flexible wiring (twisted pair, coaxial cable, etc)

  • Very long distance (700 meter)

The 21C26AT industrial AHD camera allows for single command, complete settings customization, a unique solution skoopia calls: "one-command-customization". It is effective a single VISCA command allowing you to set all relevant parameters of your OEM (Original Equipment Manufacturer) AHD camera. In need for plural settings per application / environment. Just store the different parameters in the VISCA "block command" and set the OEM camera to your liking, avoiding having multiple versions on stock with subtle, but different settings (e.g. PAL/NTSC, flip in case of reverse build-in, baud rate, white balance, gain). 

14mm x 14mm industrial CVBS camera replacement, 14mm x 14mm industrial AHD camera