Simplified transmission system for sequential time-compression of two signals
US4410981A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 13, 1981 |
| Grant date | Oct 18, 1983 |
| Priority date | — |
| Expiry date | Aug 13, 2001 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N9/825
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Two signals are generated simultaneously. In order to pass them through a single signal channel, the two signals are time-compressed and rearranged into a time-sequential form by means of pairs of controllable delay lines. The delay lines are controlled from a single drive circuit so that the delay of both is long when clocking is at a low rate. In the long-delay mode, the two delay lines are coupled to the two signal sources to be loaded with signal in parallel. The mode of both delay lines is then switched to a short-delay mode. In order to achieve sequential operation, the mode switching is accompanied by a coupling of the signal output terminal of one of the delay lines to the signal input of the other. In the second mode, the first delay lines clocks out to a system output terminal, while the other clocks to the output terminal through the first, thereby achieving a sequential output signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.