The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 20, 2010
Filed:
Jul. 10, 2002
Peter Möller, Freiburg, DE;
Zoran Mijovic, Freiburg, DE;
Manfred Jünke, Gundelfingen, DE;
Joachim Ritter, Lörrach, DE;
Steffen Zimmermann, Freiburg, DE;
Peter Möller, Freiburg, DE;
Zoran Mijovic, Freiburg, DE;
Manfred Jünke, Gundelfingen, DE;
Joachim Ritter, Lörrach, DE;
Steffen Zimmermann, Freiburg, DE;
Trident Microsystems (Far East) Ltd., Grand Cayman, KY;
Abstract
A memory device containing data to be protected is integrated with a microprocessor and includes a first and a second memory portion with different accessibilities. The integration of the memory device on the same integrated circuit (IC) or chip as the microprocessor permits a combination of protective hardware and software measures that are not possible with a memory device that is on a different IC than the microprocessor. The first memory portion holds an initialization program that also serves as a boot program during decryption, and the second memory portion holds a user program, for example, a program for decrypting and/or decoding received data. Such data may be, for example, audio data encoded according to the MP3 standard and encrypted with a secret or public password against unauthorized reception.