System and method for memory bandwidth compressor

Details System and method for memory bandwidth compressor System and method for memory bandwidth compressor

2011-03-01

2011-03-01

Nguyen, Hau H (Department: 2628)

Computer graphics processing and selective visual display system

Computer graphics display memory system

For storing compressed data

C345S422000, C345S562000

Reexamination Certificate

active

07898550

ABSTRACT:
Various embodiments for reducing external bandwidth requirements for transferring graphics data are included. One embodiment includes a system for reducing the external bandwidth requirements for transferring graphics data comprising a prediction error calculator configured to generate a prediction error matrix for a pixel tile of z-coordinate data, a bit length calculator configured to calculate the number of bits needed to store the prediction error matrix, a data encoder configured to encode the prediction error matrix into a compressed block and a packer configured to shift the compressed block in a single operation to an external memory location.

REFERENCES:
patent: 6476811 (2002-11-01), DeRoo et al.
patent: 2005/0093873 (2005-05-01), Paltashev et al.

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