Method and apparatus for interleaving control signals
US4437182A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 12, 1981 |
| Grant date | Mar 13, 1984 |
| Priority date | — |
| Expiry date | Jan 12, 2001 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04J3/12
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A method and apparatus are described for ensuring that control signals from every data channel are transmitted periodically regardless of any change in these control signals. The apparatus comprises a counter for counting the number of control signals transmitted, decision logic for determining when it is time to transmit a set of control signals regardless of any change in these signals and circuitry for selecting the channel whose signals are to be transmitted. The apparatus provides additional equipment for determining when the control signals for a particular channel have changed and for transmitting such signals with suitable error checking. The apparatus also provides equipment for interleaving the two flows of control signals without loss of the control signals which are changed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.