DLPU100A May   2020  – April 2024 DLP3021-Q1

 

  1.   1
  2.   Abstract
  3.   Trademarks
  4. 1Introduction
    1. 1.1 Purpose and Scope
  5. 2FPGA Pin Configuration and Functions
    1. 2.1 DMD Interface
    2. 2.2 Light Control
    3. 2.3 Communication
    4. 2.4 Support
    5. 2.5 FPGA Dedicated Pins
    6. 2.6 Power and Ground
    7. 2.7 Unused Pins
  6. 3Specifications
    1. 3.1 Recommended Operating Conditions
    2. 3.2 FPGA Power Consumption
    3. 3.3 Host SPI Interface Timing
    4. 3.4 Power Supply and Reset Timing
      1. 3.4.1 Power-Up Timing
      2. 3.4.2 Power-Down Timing
      3. 3.4.3 Brownout Detection
    5. 3.5 DMD Interface Timing
    6. 3.6 Flash Memory Interface Timing
    7. 3.7 Reference Clock Timing
    8. 3.8 I2C Interface Timing
  7. 4Feature Descriptions
    1. 4.1 Video Control
      1. 4.1.1 Video Options
      2. 4.1.2 Example 1: Display a Static Image
      3. 4.1.3 Example 2: Display 1 Video Repeatedly
      4. 4.1.4 Example 3: Display Two Videos Then Stop
      5. 4.1.5 Example 4: Display a Video Once and Then Display an Image Forever
      6. 4.1.6 Example 5: Display 3+ Videos/Images Seamlessly
    2. 4.2 Temperature Measurements
    3. 4.3 PWM Outputs
    4. 4.4 Host IRQ Interrupt Signal
    5. 4.5 Video and Image Compression
  8. 5Layout
  9. 6Host Command Protocol
    1. 6.1 SPI Specifications
    2. 6.2 SPI Write Command
    3. 6.3 SPI Read Command
  10. 7FPGA Register Definitions
  11. 8Revision History

4.5 Video and Image Compression

Videos and images stored in flash will be automatically compressed by the DLP Composer tool when the flash binary is built. These video frames and images will be formatted for display on the DLP3021-Q1 and compressed using a simplified run length encoding (RLE) for lossless compression. The maximum compression ratio is 16:1 for all black or all white images, but typical image compressibility is around 2:1 compression. The compression ratio will depend on the content, so the total number of images or length of video that can be stored will depend on the video content and size of the flash chip chosen.

Typical storage capabilities are listed in Table 4-3.

Table 4-3 Typical Storage Capabilities for DLP3021-Q1
FLASH SIZE APPROX. NUMBER OF IMAGES / FRAMES(1) VIDEO LENGTH (s) 25-Hz Video
512 Mb 150 6
1 Gb 300 12
2 Gb 600 24
(1) Number of frames stored in flash will depend on compressibility of video and image data. Actual number of frames will depend on individual content.
Table 4-4 Typical Storage Capabilities for DLP2021-Q1
FLASH SIZE APPROX. NUMBER OF IMAGES / FRAMES(1) VIDEO LENGTH (s) 25-Hz Video
512 Mb 300 12
1 Gb 600 24
2 Gb 1200 48
(1) Number of frames stored in flash will depend on compressibility of video and image data. Actual number of frames will depend on individual content.