Method of storing, indicating or producing signals and apparatus for recording or producing signals
US4777618A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Jul 19, 1985 |
| Grant date | Oct 11, 1988 |
| Priority date | — |
| Expiry date | Jul 19, 2005 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02D41/263
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
The invention provides an arrangement for time correlating a computer's internal information with its input and output signals. The internal information is stored in a storage device along with time data indicative of the time at which the internal information was read. This time data is used to correlate the internal information, when read from storage, with the input and output signals. The invention also provides a more general arrangement for producing logic signals. Data for producing logic signals are stored in a memory. This data includes a transition time and a corresponding logic level after the transition. Logic signals are generated and "forced" to the logic level called for by the data read from memory. This allows logic signals to be produced from little data. This general scheme is applied to an arrangement for recording and reproducing digital and analogue signals. Digital data is recorded in memory and "reconstructed" using a single, common, clock is used for A/D and D/A converting to insure synchronism over a long period of time.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.