Johan Cornelis Talstra
45Patents
10h-index
57Co-inventors
78Inventor score
Filing activity: Mar 18, 1999 → Feb 5, 2019
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6473560B1 | Copy protection schemes for copy protected digital material | Electricity | 64 | Expired |
| US7403618B2 | Conditional access | Electricity | 55 | Expired |
| US6549495B1 | Record carrier, playback device and method of recording information | Physics | 31 | Expired |
| US6701062B1 | Generational copy control of a video signal | Electricity | 26 | Expired |
| US10021377B2 | Combining 3D video and auxiliary data that is provided when not reveived | Electricity | 18 | Active |
| US6738904B2 | Recordable storage medium with protected data area | Physics | 16 | Expired |
| US7336712B1 | Video signal transmission | Electricity | 13 | Expired |
| US9247024B2 | Controlled activation of function | Electricity | 11 | Active |
| US8737842B2 | Method and system for asynchronous lamp identification | Electricity | 11 | Active |
| US7340152B1 | Method and system of copy protection of information | Electricity | 10 | Expired |
| US7310819B2 | Processing copy protection signals | Electricity | 10 | Expired |
| US6986150B2 | Rewritable data storage medium having erasable identification marks | Physics | 7 | Expired |
| US8689346B2 | Authentication method for authenticating a first party to a second party | Physics | 7 | Active |
| US8467445B2 | Video watermarking | Physics | 5 | Active |
| US6671806B2 | Watermark detector | Physics | 5 | Expired |
| US7260219B2 | Recordable storage medium with protected data area | Physics | 4 | Expired |
| US7221643B2 | Rewritable data storage medium having erasable identification marks | Physics | 4 | Expired |
| US7054245B2 | Record carrier, playback device and method of recording information | Physics | 4 | Expired |
| US10419740B2 | Switching between 3D and 2D video | Electricity | 4 | Active |
| US9924154B2 | Switching between 3D video and 2D video | Electricity | 4 | Active |
| US9202045B2 | System for managing access control | Physics | 4 | Active |
| US9438879B2 | Combining 3D image and graphical data | Electricity | 4 | Active |
| US7454621B2 | Processing copy protection signals | Electricity | 3 | Expired |
| US9210776B2 | Efficient address assignment in coded lighting systems | Electricity | 2 | Active |
| US7038600B2 | Method and device for adding or extracting a secondary information signal to/from a RLL code sequence | Physics | 2 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.