AUDIO MESSAGE RECORDERS

Brand	Owner (click to sort)	Address	Description
CLASS ACT	WORLDS OF WONDER, INC.	4209 TECHNOLOGY DRIVE FREMONT CA 94538	AUDIO MESSAGE RECORDERS, AUDIO CASSETTE RECORDERS, BLANK AUDIO CASSETTES, AUDIO RECORDER ACTIVATORS AND MICROPHONES;
EXPRESS-IT	WORLDS OF WONDER, INC.	4209 TECHNOLOGY DRIVE FREMONT CA 94538	AUDIO MESSAGE RECORDERS, BLANK AUDIO CASSETTES, AUDIO RECORDER ACTIVATORS AND MICROPHONES;
	Where the owner name is not linked, that owner no longer owns the brand

Technical Examples

Method for embedding a covert message within a digital audio signal. The existence of the covert message is undetectable and the information content of the covert message can be further rendered unascertainable. Covert message data is embedded within a digital audio signal on an audio frame-by-audio frame basis. Covert message data is embedded either at a rate of one bit per frame or two bits per frame. The invention has uses including but not limited to watermarking digital audio signals, hiding data within a digital audio signal, increasing the channel capacity of a communications channel by placing multiple messages within each other, and generally increasing message robustness.