This character overlay device can superimpose date, time, graphics, and Chinese/English character information onto standard HDMI video signals. It is primarily used in TV surveillance scenarios to overlay Chinese characters and other information onto video signals. After the video signal is overlaid with Chinese characters, the monitor can display surveillance site information.

1. HDMI characters are processed fully digitally without compression.

2. The HDMI character overlay includes distribution functionality, splitting one 4K signal into multiple outputs, supporting 4K30Hz; built-in cable auto-equalizer and clock retiming functions.

3. The HDMI character overlay provides comprehensive power status, video link status, input/output, and other effective indicator functions, making installation and debugging very convenient for users.

4. 4K30Hz input, 4K30Hz distribution output,

5. Supports power-off pass-through function.

6. Built-in GB2312 font library, supports 35 font sizes, and allows mixed display of Chinese, English, and numbers.  (Includes font sizes 24 to 160)    

7. HDMI signals support 1280*768, 1280*720, 1280*1024, 1366*768, 1600*1024, 1680*1050, 1920*1080,

(4K*2K 1600*1200  1920*1200 1920*1440 2048*1536 2560*1440 2560*1600 3840*2160)

8. Each channel's font can be independently set with or without borders. Effects such as adding or not adding background colors are supported.

9. Supports multiple fonts and uses special algorithms to ensure smooth, anti-aliased fonts.

10. Each channel has an independent built-in rechargeable battery, allowing real-time display of date and time. Power loss does not affect clock operation.

11. Built-in large-capacity DDR ensures that set information is not lost during power outages.

12. Each channel includes 2 video distribution outputs. Each channel can be individually set to display up to 8 lines with a total of 200 mixed Chinese and English characters.

13. Characters support 32-bit true color. The foreground and background colors of each channel can be set independently, supporting full color gamut.

14. Card-slot structure automatically detects the status of each board, allowing custom naming and information for each board.

15. Allows independent modification and downloading of character data for any single or multiple boards.

16. Supports one-key screen clearing function, allowing clearing of one or multiple channels without affecting others.

17. Supports device data reading and modification functions.

18. Supports coordinate adjustment for each channel's position.

19. Supports editing board name functionality.

20. Supports online detection and alert for missing boards.

21. Supports 6 date formats.

22. Allows arbitrary adjustment of row spacing and column spacing.

23. Supports left alignment, right alignment, and right-edge alignment, with definable alignment columns.

24. Supports quick editing and modification for multiple channels of characters.

25. Supports NTP automatic time calibration, allowing real-time correction by connecting to an NTP server.

26. Supports configuration saving, saving as, loading, and other functions.

27. Multi-level tree-structured quick functions, allowing grouping and categorization of multiple devices for quick selection and control of different devices in the system.

28. RS232 and Ethernet control, allowing simultaneous control of multiple devices with separate addresses.

29. The HDMI character overlay uses a fully industrial-grade wide-temperature range design, industrial-grade chips, and full surface-mount technology.

30. Wide voltage power supply supports 110-260V.

31. Uses a 3U all-aluminum card-slot chassis.

32. Optional redundant backup power supply.