Wireless methods and devices employing steganography
First Claim
Patent Images
1. A method comprising:
- providing a digital information that is to be wirelessly transmitted to a portable device, and at said portable device be rendered in human-perceptible form to a consumer;
steganographically encoding said digital information with plural-bit auxiliary data, prior to being wirelessly transmitted;
at said portable device, recovering said auxiliary data that was steganographically encoded in said digital information;
storing said auxiliary data in said portable device; and
using said stored auxiliary data to control an aspect of the portable device'"'"'s operation.
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Accused Products
Abstract
Wireless devices and methods employ steganography to convey auxiliary data in addition to audio information. An exemplary application is a battery-powered cell phone, having, e.g., a microphone, a speaker, a modulator, an antenna, and an RF amplifier. The steganographically-encoded auxiliary data can be sent to, and/or sent from, such a device, and used for purposes including authentication, system administration, etc.
148 Citations
6 Claims
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1. A method comprising:
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providing a digital information that is to be wirelessly transmitted to a portable device, and at said portable device be rendered in human-perceptible form to a consumer; steganographically encoding said digital information with plural-bit auxiliary data, prior to being wirelessly transmitted; at said portable device, recovering said auxiliary data that was steganographically encoded in said digital information; storing said auxiliary data in said portable device; and using said stored auxiliary data to control an aspect of the portable device'"'"'s operation. - View Dependent Claims (2, 3)
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4. A method comprising:
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providing a digital information that is to be wirelessly transmitted to a portable device, and at said portable device be rendered in human-perceptible form to a consumer; steganographically encoding said digital information with plural-bit auxiliary data, prior to being wirelessly transmitted; at said portable device, recovering said auxiliary data that was steganographically encoded in said digital information; and using said auxiliary data to control an aspect of the portable device'"'"'s operation. - View Dependent Claims (5, 6)
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Specification