Broadcast signal receiver retrofit apparatus and method
US6128031A · kind A · utility
3Cited by
29References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 10, 1998 |
| Grant date | Oct 3, 2000 |
| Priority date | — |
| Expiry date | Aug 10, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N21/4542
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A broadcast signal receiver retrofit apparatus that receives broadcast signals, detects rating or category codes therein and compares the detected codes to a setting set in the retrofit device. If the comparison indicates that the incoming signal has a rating greater than that set or is of an undesired category the broadcast signal is blocked or an audio or visual alert is given. The retrofit device may be tamper-resistant to prevent disabling the device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.