Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
Home › Digital authentication with analog documents

Digital authentication with analog documents

US Patent 6243480 · Granted Jun 5, 2001

Assignee

No assignee recorded.

Inventors

View full patent text on Google Patents →

More Patents by These Inventors

Watermark-based dynamic ad insertion2025
Device authentication in collaborative content screening2022
System and method for signaling security and database population2022
Watermark-based metadata acquisition and processing2022
Battery packs and method of assembling battery packs2021
Battery pack2021
Service signaling recovery for multimedia content using embedded watermarks2020
Metadata acquisition using embedded watermarks2019
Interactive content acquisition using embedded codes2019
Content management based on dither-like watermark embedding2019
Content synchronization using watermark timecodes2019
Service signaling recovery for multimedia content using embedded watermarks2019