Integrated circuit with two phase-locked loops and circuit for preventing locking owing to injection
US6141313A · kind A · utility
0Cited by
3References
20Claims
0Family size
Assignee
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Key dates
| Filing date | Jul 10, 1998 |
| Grant date | Oct 31, 2000 |
| Priority date | — |
| Expiry date | Jul 10, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B20/1403
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An integrated circuit including two phase-locked loops each with its own oscillator. To prevent locking owing to injection between the two oscillators due to stray currents in the integrated circuit, a noise generator is coupled to the oscillator of one of the loops and a timer is provided for activating the noise generator in a manner such that the noise generated changes the frequency of the oscillator randomly when the other loop is in operation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.