3-D graphics texturing system using encrypted textures
First Claim
1. A texturing system for use in a three-dimensional graphics system, the texturing system comprising:
- an input for receiving object data describing an object to be textured;
a store for storing encrypted texture data for applying to an object to be textured;
a decryption unit, coupled to the store, for decrypting the encrypted texture data;
a framebuffer, coupled to the input and to the decryption unit, for applying decrypted texture data to object data to generate textured image data; and
an output, coupled to the framebuffer, for outputting textured image data for display.
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Abstract
A texturing system for use in a three-dimensional graphics system has an input for receiving object data for an object to be textured. Encrypted texture data is obtained from a store a decrypted in a decryption unit. The decrypted texture data generates texture image data for a frame buffer from where it can be output for display. There is also provides a method for producing a software application for use in a three-dimensional graphics system which creates instructions for a software application and creates static texture data for use in conjunction with the instructions. The static texture data is encrypted and provided as encrypted texture data with the software instructions. A protected software application can be distributed to a target device from a distribution device by coupling the distribution device to the target device, transferring target device identifier data from the target device to the distribution device and using the target device identifier data in the distribution device to generate encryption definition data specific to the target device. The protected software application and encryption definition data are then transferred to the target device.
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Citations
6 Claims
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1. A texturing system for use in a three-dimensional graphics system, the texturing system comprising:
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an input for receiving object data describing an object to be textured;
a store for storing encrypted texture data for applying to an object to be textured;
a decryption unit, coupled to the store, for decrypting the encrypted texture data;
a framebuffer, coupled to the input and to the decryption unit, for applying decrypted texture data to object data to generate textured image data; and
an output, coupled to the framebuffer, for outputting textured image data for display. - View Dependent Claims (2, 5, 6)
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3. A method of applying texturing to three-dimensional graphics data, the method comprising the steps of:
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storing encrypted texture data for applying texture to an object;
receiving object data describing an object to be textured using stored texture data;
accessing and decrypting the encrypted texture data;
applying the decrypted texture data to the object data to generate textured image data; and
outputting the textured image data for display. - View Dependent Claims (4)
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Specification