Clock signal supply system
US5184027A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 22, 1991 |
| Grant date | Feb 2, 1993 |
| Priority date | — |
| Expiry date | Apr 22, 2011 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10N60/857
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A clock signal supply system provides for automatic accurate phase adjustment of clock signals. The system includes an oscillator that produces clock signals and a reference generator that generates a reference signal that has a predetermined relationship with respect to the clock signals produced by the oscillator. At each location where the clock signal is to be received, an adjusting circuit is provided to adjust the phase of the received clock signals. Such an adjusting circuit may include a variable delay circuit which receives the clock signal and produces an output which is constituted by the clock signal having a varied delay, to the remainder of the attached circuits. Further, the output of the variable delay is fed back to a phase difference detection circuit. The reference signal is second input to the phase difference detection circuit. This phase difference detection circuit compares the difference of the reference signal and the output of the variable delay circuit and produces the control signal to the variable delay circuit which will further adjust the phase of the clock signal that is received. This adjustment is carried out at each of the locations where the cloc…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.