Pre-processed information embedding system
View Patent ↗Methods are provided for embedding auxiliary information in a host content signal which reduce the memory, bandwidth and computational complexity of the embedding and transmission systems. In one embodiment, a first reduced-scale signal is produced which corresponds to the host content embedded with a first logical value and producing a second reduced-scale signal corresponding to the host content embedded with a second logical value. A first set of segments from the first reduced-scale signal may be combined with a second set of segments from the second reduced-scale signal in a pre-defined manner to produce a composite embedded host content. Thus the storage and transmission requirements of the watermarking system are reduced to having to deal with only the original content plus two reduced-scale signals.
1. A method for embedding auxiliary information symbols in a host content, comprising:
producing a first reduced-scale content corresponding to a plurality of segments of said host content embedded with a first logical value;
producing a second reduced-scale content corresponding to said plurality of segments of said host content embedded with a second logical value; and
selecting a first set of segments from said first reduced-scale content and a second set of segments from said second reduced-scale content in a pre-defined manner to produce a composite watermark, wherein a combination of said composite watermark with said host content produces a composite embedded host content.
2. The method of claim 1 , wherein said pre-defined manner identifies an entity.
3. The method of claim 1 , wherein said pre-defined manner identifies a transaction.
4. The method of claim 1 , wherein said combining occurs at user premises.
5. The method of claim 1 , wherein said composite embedded host content is transmitted and subsequently received at a display device.
6. The method of claim 1 , wherein said host content comprises at least one of audio, video, text, or programming information.
7. An apparatus, comprising:
a pre-processor configured to produce a first reduced-scale content corresponding to a plurality of segments of a host content embedded with a first logical value, and a second reduced-scale content corresponding to said plurality of segments of said host content embedded with a second logical value; and
a selector configured to select a first set of segments from said first reduced-scale content and a second set of segments from said second reduced-scale content in a pre-defined manner to produce a composite watermark, wherein a combination of said composite watermark with said host content produces a composite embedded host content.
8. The apparatus of claim 7 , wherein said pre-defined manner identifies an entity.
9. The apparatus of claim 7 , wherein said pre-defined manner identifies a transaction.
10. The apparatus of claim 7 , wherein said combining occurs at user premises.
11. The apparatus of claim 7 , wherein said composite embedded host content is transmitted and subsequently received at a display device.
12. The apparatus of claim 7 , wherein said host content comprises at least one of audio, video, text, or programming information.