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Digital Picture Frame (DPF)

Digital Picture Frame (DPF) Solutions from Texas Instruments

Block Diagram


AC/DC Supply Audio Amplifier Battery Management Clocking Common Interfaces Core & I/O Power Display Interface I/F Power IrDA LCD Backlight LCD Supply Logic Low Power Wireless Memory Power Microprocessor Stereo Audio DAC System Power TMP Sensor Touch Screen Control USB Video Amplifier 1 Video Amplifier 2 Video Decoder Video Engine

Design Considerations

The Digital Picture Frame (DPF) solves the problem of displaying digital photos (optional also music and videos) without a computer. While the basic function models can just show JPEG pictures in a slide show, multimedia features (zoom and rotate pictures, play music and videos, support of all popular memory cards, internal memory, auto on/off, etc.) require high-end components but staying on the low-end side on power consumption. Next generation multimedia picture frames offer the possibility to connect to the Internet and download pictures or information (weather, news, …) from a server.

The core subsystem includes:

  • Video Engine and Microprocessor – perform the processing of JPEGs and decoding of MPEGs, handle audio processing, and control the power management and user interface. While many functions can be integrated there might be a need for discrete solutions on the audio, video and interface side.
  • Audio – provides audio output for up to two channels usually decoded by the processor. So digital to analog conversion and amplification is needed.
  • Memory – stores executing code, data/parameters, and pictures, movies and sound. Switching and voltage level translation might be required for memory cards.
  • User Interface – allows the user to control the digital picture frame using buttons, remote or touch screen control.
  • Power Conversion – converts the input power from the AC/DC wall adaptor to run various functional blocks. Battery charge management can be controlled by the microprocessor.

Recommended Resources

Application Notes

  • Implementing DDR2/mDDR PCB Layout on the TMS320DM35x DMSoC (Rev. A) (spraar3a.htm, 8 KB)
    12 Aug 2008 Abstract
  • TMS320DM355 DSP Power Reference Design PR742 (Rev. A) (slva288a.htm, 8 KB)
    08 Aug 2008 Abstract
  • Class-D LC Filter Design (Rev. A) (sloa119a.htm, 8 KB)
    07 Jan 2008 Abstract
  • Out-of-Band Noise Measurement Issues for Audio Codecs (slaa313.htm, 8 KB)
    06 Dec 2006 Abstract
  • Guidelines for Measuring Audio Power Amplifier Performance (sloa068.htm, 8 KB)
    30 Oct 2001 Abstract
    

Selection and Solution Guides

Selection Guides

  • Featured Signal Chain and Power Management Product Guide (slyb137.pdf, 4.91 MB)
    03 Jul 2008 Download
  • System-Level ESD Quick Reference Card (Rev. A) (sllt209a.pdf, 407 KB)
    19 Jun 2008 Download
  • Power Management Selection Guide (Rev. H) (slvt145h.pdf, 4.83 MB)
    11 Apr 2008 Download

Solution Guides

  • Video and Imaging Solutions Guide 3Q 2008 (Rev. F) (slyb099f.pdf, 1.89 MB)
    03 Jul 2008 Download

News Releases & Authored Articles

News Releases

Date Headline
18 Nov 2008 New digital media processor from Texas Instruments provides H.264 at D1 resolution for professional quality video on low-cost consumer video products
12 Aug 2008 TI introduces complete audio subsystem for portable devices
16 Jul 2008 Design costs for portable display electronics drop with TI's lowest cost digital media processor

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