Tuning mode arrangement useful for restricting channel selection to certain channels
US4355415A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 29, 1980 |
| Grant date | Oct 19, 1982 |
| Priority date | — |
| Expiry date | Apr 29, 2000 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03J5/029
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A television tuning system includes a memory for storing tuning information with first and second groups of memory locations for storing different tuning information for the same group of predetermined channels. A mode switch, in a first mode, allows memory locations in the first group to be addressed when channels in the predetermined group are selected and in a second mode allows memory locations in the second group to be addressed when channels in the predetermined group are selected. Such an arrangement is useful in a motel, hotel or hospital to allow certain channels in a list of channels to be selected when a rental fee has been paid and to exclude those certain channels when the rental fee has not been paid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.