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Video Information Overlay Module


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BOB-4 OSD   Datasheet
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Product Overview

The BOB-4 OSD is decades fourth generation low cost video information overlay module, available in a rugged 2x20 header connector format with industrial temperature specs as well as the original 30pin SIMM format. BOB-4 lets your microcontroller or PC display text and vector graphics on standard TV monitors. With large user definable character sets, BOB-4 also supports bitmap graphics and multiple languages. BOB-4 generates background video on board, or automatically genlocks to your video source and super imposes characters over the image. Printable characters and commands drive BOB-4 through fast SPI or RS232 style data links, much like a serial terminal or printer. BOB-4 links directly to most microcontroller chips and modules. NTSC and PAL video standards are supported in a single hardware version.
  • Simple hook up, requires just 5VDC, serial data, video I/O
  • Immediately prints plain ASCII text in default configuration
  • High display density up to 480x240 (NTSC) or 480x288 (PAL)
  • Industry standard ANSI command protocol (ECMA-048)
  • Automatic vertical scrolling
  • Text crawl (single line smooth horizontal scroll)
  • Mirror image reverse text display capability
  • VBI (vertical blanking interval) data insertion
  • Automatic video mode control (local/genlock)
  • Handles S-Video (Y/C video) with simple external circuit


Industrial, Imaging, Video & Vision, Building Automation, Robotics, Security, Aerospace, Defence, Military, Communications & Networking, Multimedia, System Monitoring


ESD (electro-static discharge) safety precautions must be followed at all times when handling BOB-4 modules. Use a grounded wrist strap and grounded work surface.

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Decade Engineering


Audio, Video

Video Overlay Module

Board Only


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Technical Docs (1)

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S$139.10 ( S$148.84  Inc. GST)

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