Digital content modification for content protection
View Patent ↗An end user system comprises a communication interface configured to receive content in a protected state and transfer the content in the protected state, a processing system coupled to the communication interface and configured to receive the content in the protected state, process the content with a key hard coded internally to the processing system to modify the content to an unprotected state, and transfer the content in the unprotected state, and a user interface coupled to the processing system and configured to receive the content in the unprotected state and output the content.
1. An end user system comprising:
a communication interface configured to receive content in a compressed protected state and transfer the content in the compressed protected state, wherein the communication interface receives the content in the compressed protected state from a content provider system, wherein the content provider system modifies the content in an unprotected digital state to a protected state, compresses the content in the protected state to a compressed protected state, and transfers the content in the compressed protected state to the communication interface;
a processing system coupled to the communication interface and configured to receive the content in the compressed protected state, and transfer the content in a decompressed protected state, wherein the processing system comprises a compression module configured to decompress the content to the decompressed protected state; and
a user interface coupled to the processing system and configured to receive the content in the decompressed protected state, and output the content to a user in an analog form, wherein the user interface comprises a digital to analog conversion (DAC) process configured to process the content in the decompressed protected state with a key hard coded internally to the user interface to modify the content to the unprotected digital state, and convert the content in the unprotected digital state to the analog form.
2. The end user system of claim 1 wherein the protected state comprises an encrypted state and wherein the unprotected digital state comprises an unencrypted state.
3. A method of operating an end user system, the method comprising:
receiving content in a compressed protected state into a communication interface, wherein the communication interface receives the content in the compressed protected state from a content provider system, wherein the content provider system modifies the content in an unprotected digital state to a protected state, compresses the content in the protected state to a compressed protected state, and transfers the content in the compressed protected state to the communication interface;
transferring the content from the communication interface to a processing system, wherein the processing system comprises a compression module;
in the compression module, decompressing the content in the compressed protected state to a decompressed protected state;
transferring the content in the uncompressed protected state to a user interface, wherein the user interface comprises a digital to analog conversion (DAC) process;
in the DAC process, processing the content in the decompressed protected state with a key hard coded internally to the user interface to modify the content to the unprotected digital state, and converting the content from the unprotected digital state to an analog form; and
providing the content to a user in the analog form.
4. The method of claim 3 wherein the protected state comprises an encrypted state and wherein the unprotected digital state comprises an unencrypted state.