Time of day clock control
US4349890A · kind A · utility
8Cited by
2References
3Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 28, 1979 |
| Grant date | Sep 14, 1982 |
| Priority date | — |
| Expiry date | Dec 28, 1999 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG04G99/006
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A time of day clock for a computer is run off a clock for the computer processor by selecting the processor clock cycle T such that a binary multiple N of the time of day unit cycle D contains an integral number K of processor cycles T or ND=KT in accordance with the equation: EQU D=(R.+-.X/N)T, where R is the integer nearest the actual D/T ratio, while X represents the number of D cycles of longer or shorter duration than R processor cycles needed to establish the actual proportional relationship between the two cycles over the period ND.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.