Oscillators – Ring oscillators
Patent
1994-04-07
1995-09-19
Pascal, Robert J.
Oscillators
Ring oscillators
331 1A, 331 25, 327291, 327295, 327141, 327113, 327158, 327159, H03B 500, H03K 364, H03L 706
Patent
active
054519110
ABSTRACT:
A timing generator contains an oscillator section (10) formed with a plural number of stages (S.sub.1 -S.sub.N) for respectively producing a like number of stage signals (V.sub.S1 -V.sub.SN) that sequentially change signal values at a basic oscillator frequency (f.sub.O). The oscillator section is typically implemented as a ring oscillator. In response to the stage signals, a timing-signal generating section (14) generates one or more timing signals (V.sub.T1 -V.sub.TM), each having at least two transitions corresponding to transitions of two or more of the stage signals. A control section (12), preferably arranged in a phase-locked loop, causes the oscillator frequency and a reference frequency (f.sub.R) to have a substantially fixed relationship.
REFERENCES:
patent: 4564953 (1986-01-01), Werking
patent: 5008636 (1991-04-01), Markinson et al.
patent: 5073730 (1991-12-01), Hoffman
patent: 5180994 (1993-01-01), Martin et al.
patent: 5218314 (1993-06-01), Efendovich et al.
patent: 5331294 (1994-07-01), Watanabe et al.
patent: 5345449 (1994-09-01), Buckingham et al.
Colvin Bryan J.
Shindo Masao
Chang Emil C.
Hamrick Claude A. S.
Kinkead Arnold
Media Vision Inc.
Pascal Robert J.
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