U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

Encryption of signals to insure viewership of commercials

Patent 5555308 Issued on September 10, 1996. Estimated Expiration Date: Icon_subject November 10, 2014. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

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Re33189

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Inventor

Assignee

Application

No. 337672 filed on 11/10/1994

US Classes:

705/51, Usage protection of distributed data files380/241, Having program ID or authorization705/26, Electronic shopping (e.g., remote ordering)713/183Solely password entry (no record or token)

Examiners

Primary: Cangialosi, Salvatore

International Class

H04L 009/00

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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