Television monitoring device
US4613904A · kind A · utility
162Cited by
7References
8Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 15, 1984 |
| Grant date | Sep 23, 1986 |
| Priority date | — |
| Expiry date | Mar 15, 2004 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04M9/00
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A channel identifying rolling bar code, transmitted with a television broadcast signal, is displayed at a selected location on the receiving television screen. An apparatus is secured to the television set to view the rolling bar code to identify the channel being transmitted and process that information as necessary to detect the periods of time that different channels are received by the particular set. That information is stored in an internal memory for eventual use by a central processor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.