Encryption of signals to insure viewership of commercials
First Claim
1. In a broadcast signal transmission system, including a broadcast message, a method for distributing digital data to a plurality of receivers, said method comprising:
- generating a key code;
encrypting said digital data using said key code to form an encrypted digital data packet;
combining said key code with said broadcast message to form a combined broadcast message, said key code being unencrypted;
transmitting said combined broadcast message to form a broadcast message; and
transmitting said encrypted digital data packet; and
at each of said plurality of receivers,receiving said broadcast message;
displaying said broadcast message;
receiving said key code from said displayed broadcast message;
receiving said encrypted digital data packet;
manually entering said key code at said receiver to form a manually entered key code; and
decrypting said encrypted digital data packet using said manually entered key code.
1 Assignment
0 Petitions
Accused Products
Abstract
A system for distributing data to attract consumers to a commercial message provides for the delivery of free data to the consumer. The commercial message includes instructions in the form of a code, which can be a word or phrase, in the video or audio portion of the commercial message. The broadcast data is typically scrambled, such as by encryption, and the consumer uses the broadcast code to receive and decrypt the desired digital data for storage into a home computer. In order to receive the proper code, the consumer must pay close attention to the commercial message. The consumer'"'"'s computer is connected to receiving circuitry so that upon entry of the proper code, broadcast data is downloaded into the computer memory and decoded. The complimentary digital data thus delivered is typically useful information such as stock prices, weather information, sports scores, etc. The packets of desirable data are delivered transparent to the receiver, or alternatively as a visual or audible burst.
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Citations
24 Claims
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1. In a broadcast signal transmission system, including a broadcast message, a method for distributing digital data to a plurality of receivers, said method comprising:
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generating a key code; encrypting said digital data using said key code to form an encrypted digital data packet; combining said key code with said broadcast message to form a combined broadcast message, said key code being unencrypted; transmitting said combined broadcast message to form a broadcast message; and transmitting said encrypted digital data packet; and
at each of said plurality of receivers,receiving said broadcast message; displaying said broadcast message; receiving said key code from said displayed broadcast message; receiving said encrypted digital data packet; manually entering said key code at said receiver to form a manually entered key code; and decrypting said encrypted digital data packet using said manually entered key code. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. In a broadcast signal transmission system, including a broadcast message, a receiver method for distributing digital data to a plurality of receivers, said system including generating a key code;
- encrypting said digital data using said key code to form an encrypted digital data packet;
combining said key code with said broadcast message to form a combined broadcast message, said key code being unencrypted;
transmitting said combined broadcast message to form a broadcast message; and
transmitting said encrypted digital data packet to each of said plurality of receivers, said receiver method comprising;receiving said broadcast message; displaying said broadcast message; receiving said key code from said displayed broadcast message; receiving said encrypted digital data packet; manually entering said key code at said receiver to form a manually entered key code; and decrypting said digital data packet using said manually entered key code. - View Dependent Claims (9, 10, 11, 12)
- encrypting said digital data using said key code to form an encrypted digital data packet;
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13. In a broadcast signal transmission system, including a broadcast message, an apparatus for distributing digital data to a plurality of receivers, said apparatus comprising:
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means for generating a key code; means for encrypting said digital data using said key code to form an encrypted digital data packet; means for combining said key code with said broadcast message to form a combined broadcast message, said key code being unencrypted; means for transmitting said combined broadcast message to form a broadcast message; and means for transmitting said encrypted digital data packet; and
at each of said plurality of receivers,means for receiving said broadcast message; means for displaying said broadcast message; means for receiving said key code from said displayed broadcast message; means for receiving said encrypted digital data packet; means for manually entering said key code at said receiver to form a manually entered key code; and means for decrypting said encrypted digital data packet using said manually entered key code. - View Dependent Claims (14, 15, 16, 17, 18, 19)
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20. In a broadcast signal transmission system, including a broadcast message, a receiver apparatus for distributing digital data to a plurality of receivers, said system including generating a key code;
- encrypting said digital data using said key code to form an encrypted digital data packet;
combining said key code with said broadcast message to form a combined broadcast message, said key code being unencrypted;
transmitting said combined broadcast message to form a broadcast message; and
transmitting said encrypted digital data packet; and
at each of said plurality of receivers, said receiver apparatus comprising;means for receiving said broadcast message; means for displaying said broadcast message; means for receiving said key code from said displayed broadcast message; means for receiving said encrypted digital data packet; means for manually entering said key code at said receiver to form a manually entered key code; and means for decrypting said digital data packet using said manually entered key code. - View Dependent Claims (21, 22, 23, 24)
- encrypting said digital data using said key code to form an encrypted digital data packet;
Specification