Abstract

This paper proposes a new processor-based backlight dimming algorithm and hardware architecture. The processor-based design of the backlight dimming system requires low computation for real-time processing. The proposed algorithm calculates an average gray level of RGB signals and combines the histogram gray-level bins to reduce computation. Additionally, it uses scene change detection and adaptive binary search to decrease iterations of the clipped error control algorithm. In the simulation results, the proposed algorithm reduced computation time by up to 94.2%, compared to a conventional algorithm. Further, the proposed processor-based backlight dimming system drove a 32-inch LCD panel successfully.

© 2013 IEEE

PDF Article

References

  • View by:
  • |
  • |

  1. I. Choi, H. Shim, N. Chang, "Low-power color TFT LCD display for hand-held embedded systems," Proc. Int. Symp. Low-Power Electron. Des. (2002) pp. 112-117.
  2. A. Iranli, W. Lee, M. Pedram, "HVS-aware dynamic backlight scaling in TFT-LCDs," IEEE Trans. Very Large Scale Integr. (VLSI) Syst. 14, 1103-1116 (2006).
  3. S.-J. Kang, Y. H. Kim, "Image Integrity-based gray-level error control for low power liquid crystal displays," IEEE Trans. Consumer Electron. 55, 2401-2406 (2009).
  4. J. Silc, B. Robic, T. Ungerer, Processor Architecture: From Dataflow to Superscalar and Beyond (Springer-Verlag, 1999).
  5. D.-C. Hwang, J.-S. Park, S.-C. Kim, D.-H. Shin, E.-S. Kim, "Magnification of 3D reconstructed images in integral imaging using an intermediate-view reconstruction technique," Appl. Opt. 45, 4631-4637 (2006).
  6. D. S. Taubman, M. W. Marcellin, JPEG2000 Image Compression Fundamentals, Standards and Practice (Kluwer Academic, 2002).
  7. A. Iranli, H. Fatemi, M. Pedram, "HEBS: Histogram equalization for backlight scaling," Proc. Conf. Des., Autom. Test in Eur. (2005) pp. 346-351.
  8. LG DisplaySeoulKorea“Liquid crystal display,” LP064V1 (2001).
  9. Int. Org. for Standardization (ISO)GenevaSwitzerlandISO12640 Image Set (2004) http://www.iso.org/.
  10. G. Marchionini, G. Geisler, "The open video digital library," Digital Library Mag. 8, (2002).
  11. F.-C. Lin, Y.-P. Huang, L.-Y. Liao, C.-Y. Liao, H.-P. D. Shieh, T.-M. Wang, S.-C. Yeh, "Dynamic backlight gamma on high dynamic range LCD TVs," J. Display Technol. 4, 139-146 (2008).
  12. N. Giamello, "LED backlighting for LCDs: Options, design considerations, benefits," SHARP Inf. Doc. 1-11 (2010).
  13. H. Chen, J. Sung, T. Ha, Y. Park, C. Hong, "Backlight local dimming algorithm for high contrast LCD TV," Proc. ASID 168-171 (2006).
  14. C.-C. Lai, C.-C. Tsai, "Backlight power reduction and image contrast enhancement using adaptive dimming for global backlight applications," IEEE Trans. Consumer Electron. 54, 669-674 (2008).
  15. M. Albrecht, A. Karrenbauer, C. Xu, "A clipper-free algorithm for efficient HW-implementation of local dimming LED-backlight," Proc. 28th Int. Display Res. Conf. (2008) pp. 286-289.
  16. J. S. Lee, B. H. Lee, B. S. Kang, Y. H. Kim, "An application specific processor-based controller for plasma display panels," IEEE Trans. Consumer Electron. 52, 953-961 (2006).
  17. T. H. Cormen, C. E. Leiserson, R. L. Rivest, C. Stein, Introduction to Algorithms (MIT Press, 2001).

2010 (1)

N. Giamello, "LED backlighting for LCDs: Options, design considerations, benefits," SHARP Inf. Doc. 1-11 (2010).

2009 (1)

S.-J. Kang, Y. H. Kim, "Image Integrity-based gray-level error control for low power liquid crystal displays," IEEE Trans. Consumer Electron. 55, 2401-2406 (2009).

2008 (2)

F.-C. Lin, Y.-P. Huang, L.-Y. Liao, C.-Y. Liao, H.-P. D. Shieh, T.-M. Wang, S.-C. Yeh, "Dynamic backlight gamma on high dynamic range LCD TVs," J. Display Technol. 4, 139-146 (2008).

C.-C. Lai, C.-C. Tsai, "Backlight power reduction and image contrast enhancement using adaptive dimming for global backlight applications," IEEE Trans. Consumer Electron. 54, 669-674 (2008).

2006 (4)

J. S. Lee, B. H. Lee, B. S. Kang, Y. H. Kim, "An application specific processor-based controller for plasma display panels," IEEE Trans. Consumer Electron. 52, 953-961 (2006).

H. Chen, J. Sung, T. Ha, Y. Park, C. Hong, "Backlight local dimming algorithm for high contrast LCD TV," Proc. ASID 168-171 (2006).

A. Iranli, W. Lee, M. Pedram, "HVS-aware dynamic backlight scaling in TFT-LCDs," IEEE Trans. Very Large Scale Integr. (VLSI) Syst. 14, 1103-1116 (2006).

D.-C. Hwang, J.-S. Park, S.-C. Kim, D.-H. Shin, E.-S. Kim, "Magnification of 3D reconstructed images in integral imaging using an intermediate-view reconstruction technique," Appl. Opt. 45, 4631-4637 (2006).

2002 (1)

G. Marchionini, G. Geisler, "The open video digital library," Digital Library Mag. 8, (2002).

Appl. Opt. (1)

Digital Library Mag. (1)

G. Marchionini, G. Geisler, "The open video digital library," Digital Library Mag. 8, (2002).

IEEE Trans. Consumer Electron. (3)

C.-C. Lai, C.-C. Tsai, "Backlight power reduction and image contrast enhancement using adaptive dimming for global backlight applications," IEEE Trans. Consumer Electron. 54, 669-674 (2008).

J. S. Lee, B. H. Lee, B. S. Kang, Y. H. Kim, "An application specific processor-based controller for plasma display panels," IEEE Trans. Consumer Electron. 52, 953-961 (2006).

S.-J. Kang, Y. H. Kim, "Image Integrity-based gray-level error control for low power liquid crystal displays," IEEE Trans. Consumer Electron. 55, 2401-2406 (2009).

IEEE Trans. Very Large Scale Integr. (VLSI) Syst. (1)

A. Iranli, W. Lee, M. Pedram, "HVS-aware dynamic backlight scaling in TFT-LCDs," IEEE Trans. Very Large Scale Integr. (VLSI) Syst. 14, 1103-1116 (2006).

J. Display Technol. (1)

Proc. ASID (1)

H. Chen, J. Sung, T. Ha, Y. Park, C. Hong, "Backlight local dimming algorithm for high contrast LCD TV," Proc. ASID 168-171 (2006).

SHARP Inf. Doc. (1)

N. Giamello, "LED backlighting for LCDs: Options, design considerations, benefits," SHARP Inf. Doc. 1-11 (2010).

Other (8)

M. Albrecht, A. Karrenbauer, C. Xu, "A clipper-free algorithm for efficient HW-implementation of local dimming LED-backlight," Proc. 28th Int. Display Res. Conf. (2008) pp. 286-289.

T. H. Cormen, C. E. Leiserson, R. L. Rivest, C. Stein, Introduction to Algorithms (MIT Press, 2001).

I. Choi, H. Shim, N. Chang, "Low-power color TFT LCD display for hand-held embedded systems," Proc. Int. Symp. Low-Power Electron. Des. (2002) pp. 112-117.

J. Silc, B. Robic, T. Ungerer, Processor Architecture: From Dataflow to Superscalar and Beyond (Springer-Verlag, 1999).

D. S. Taubman, M. W. Marcellin, JPEG2000 Image Compression Fundamentals, Standards and Practice (Kluwer Academic, 2002).

A. Iranli, H. Fatemi, M. Pedram, "HEBS: Histogram equalization for backlight scaling," Proc. Conf. Des., Autom. Test in Eur. (2005) pp. 346-351.

LG DisplaySeoulKorea“Liquid crystal display,” LP064V1 (2001).

Int. Org. for Standardization (ISO)GenevaSwitzerlandISO12640 Image Set (2004) http://www.iso.org/.

Cited By

OSA participates in CrossRef's Cited-By Linking service. Citing articles from OSA journals and other participating publishers are listed here.

Alert me when this article is cited.