Claims
- 1. A method of insuring only copyrighted material is playable or usable in any digital media system comprising the steps of:
- integrating a radio-frequency interrogator with a media player for transmitting an interrogation signal to a transponder and for receiving a transponder response signal in response;
- attaching a transponder to a predetermined media element wherein said transponder transmits a transponder response signal comprising a codeword and a predetermined address associated with said predetermined media element to said interrogator in response to said interrogation signal;
- receiving a transponder response signal and providing said predetermined address to said media player;
- reading said dataword at said predetermined address;
- comparing said dataword and said codeword and authorizing the play or use of said media element upon a match of said dataword and said codeword.
- 2. The method according to claim 1, wherein said codeword and said predetermined address are programmed into the transponder memory at the manufacturing level.
- 3. The method according to claim 1, wherein said codeword and said predetermined address are programmed into the transponder at the customer level.
- 4. The method according to claim 1, wherein said at least one of said codeword and said predetermined address are encrypted by the transponder.
- 5. The method according to claim 2, wherein said comparing of said codeword and said dataword is performed within the same integrated circuit.
- 6. The method according to claim 1, wherein said comparing is accomplished through a look table.
- 7. The method according to claim 1, wherein said comparing is done directly.
- 8. The method according to claim 1, wherein said comparing is performed through an algorithm.
Parent Case Info
This application claims priority under 35 U.S.C. .sctn. 119 (e) (1) of provisional application Ser. No. 06/016,745, filed May 02, 1996, abandoned.
US Referenced Citations (9)
Foreign Referenced Citations (1)
Number |
Date |
Country |
4403206 |
Aug 1995 |
DEX |
Non-Patent Literature Citations (1)
Entry |
FELICA--Remote Card System--Sony Remote Card System, Next Generation for Contactless Smartcard, SONY--Sony Corporation, Tokyo, 141, Japan. |