Text Overlay Module

General Description

Module permits text in a user-defined text-box to be inserted directly over 24-bit RGB video. Simply write the ASCII characters to be displayed to an internal buffer and the text appears as a video overlay. Features 3 font sizes, user-defined character bitmaps, text highlighting, 8-bit transparency, programmable colours, movable text-box, simple animation. Easy uP interfacing with I2C, SPI or UART options.

Key Design Features

- Text overlays on 24-bit RGB video
- Supports video resolutions up to 4096x4096
- Character buffer maps directly to display
- Programmable text-box position
- Filled or unfilled text-box region
- Three sizes of text: 8x16, 16x32 or 32x64
- Programmable foreground/background colours
- Programmable 8-bit alpha transparency
- Independent horizontal and vertical scrolling
- Normal or highlighted text
- User-defined character bitmap ROM
- Ships with 4 character sets as standard
- 128 character bitmaps supported
- Simple programming interface
- Easily integrates with all Zipcores Video IP
- Small implementation size ideal for FPGA
- No frame buffer required

Applications

- Terminal/Console windows
- Digital TV and home-media solutions
- Simple animated text/bitmap graphics
- Interactive guides, menus, tables, lists etc.
- Instrumentation/monitoring applications
- Animated gauges, charts, dials, counters etc.

View datasheet

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