×

Methods and systems for residual layer scaling

  • US 8,059,714 B2
  • Filed: 03/31/2007
  • Issued: 11/15/2011
  • Est. Priority Date: 07/10/2006
  • Status: Active Grant
First Claim
Patent Images

1. A method for scaling transform coefficients in a multi-layer bitstream having a first layer and a second layer, said method comprising:

  • (a) a processor determining a first-layer quantization parameter based on said multi-layer bitstream;

    (b) a processor determining a second-layer quantization parameter based on said multi-layer bitstream;

    (c) a processor scaling a first-layer transform coefficient based on said first-layer quantization parameter and said second-layer quantization parameter, and without reconstructing said first layer;

    (d) a processor modifying the scaled said first-layer transform coefficient using data from said second layer; and

    (e) a processor reconstructing said second layer, without reconstruction of said first layer;

    wherein said scaling is performed according to the following relationship;

View all claims
  • 2 Assignments
Timeline View
Assignment View
    ×
    ×