Patent Number: 8,791,789

Title: Remote control signaling using audio watermarks

Abstract: A system for using a watermark embedded in an audio signal to remotely control a device. Various devices such as toys, computers, and appliances, equipped with an appropriate detector, detect the hidden signals, which can trigger an action, or change a state of the device. The watermarks can be used with a "time gate" device, where detection of the watermark opens a time interval within which a user is allowed to perform an action, such as pressing a button, typing in an answer, turning a key in a lock, etc.

Inventors: Petrovic; Rade (San Diego, CA), Winograd; Joseph M. (San Diego, CA)

Assignee: Verance Corporation

International Classification: G06F 7/00 (20060101); H04B 1/00 (20060101); G05B 19/00 (20060101)

Expiration Date: 7/29/12018