Integrated circuit with two phase-locked loops and circuit for p

Details Integrated circuit with two phase-locked loops and circuit for p Integrated circuit with two phase-locked loops and circuit for p

1998-07-10

2000-10-31

Hindi, Nabil

Dynamic information storage or retrieval

Specific detail of information handling portion of system

Radiation beam modification of or by storage medium

36912414, 369 53, 369 48, 360 51, G11B 700

Patent

active

061413135

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.

REFERENCES:
patent: 5172357 (1992-12-01), Taguchi
patent: 5359298 (1994-10-01), Abe
patent: 5414390 (1995-05-01), Kovacs et al.

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