Oscillators – Automatic frequency stabilization using a phase or frequency... – Afc with logic elements
Patent
1994-02-08
1995-04-18
Pascal, Robert J.
Oscillators
Automatic frequency stabilization using a phase or frequency...
Afc with logic elements
331 11, 331 12, 331 25, 375371, 375374, 375376, 327156, 327292, 360 51, H03L 700
Patent
active
054082005
ABSTRACT:
A system and method for a computer based system for enabling data phase clock corrections. Basing these corrections primarily on errors that cause consistent phase shift errors while reducing the effect of random data phase errors. An improved phase-locked loop (PLL) is used where multiple data bits are examined simultaneously, allowing us to examine "apparent future" and "apparent late" data. The average phase adjustment to the data window is calculated based upon the examined data bits.
REFERENCES:
patent: 3555194 (1971-01-01), Goto
patent: 3792478 (1974-02-01), Parquier et al.
patent: 3819919 (1974-06-01), McGunigle
patent: 4535459 (1985-08-01), Hogge, Jr.
patent: 4873491 (1989-10-01), Wilkins
patent: 4888564 (1989-12-01), Ishigaki
patent: 4899071 (1990-02-01), Morales
patent: 4970609 (1990-11-01), Cunningham et al.
patent: 5054038 (1991-10-01), Hedberg
patent: 5146121 (1992-09-01), Searles et al.
patent: 5206601 (1993-04-01), Ready
patent: 5212601 (1993-05-01), Wilson
"DP8459 All-Code Data Synchronizer," National Semiconductor Preliminary Data Sheet, Mar. 1988, pp. 1-36.
W. Llewellyn et al., "A 33 Mbit/sec Data Synchronizing Phase-Locked-Loop Circuit," National Semiconductor Application Note, (date unknown).
Boyd et al., "Low Voltage, Low Cost, High Speed Charge Pump with High/Low Gain Operations", IBM Technical Disclosure Bulletin, vol. 27, No. 9, pp. 5210-5211, Feb. 1985.
Davie et al., "Simplified Phase-Locked Loop", IBM Technical Disclosure Bulletin, vol. 25, No. 3B, pp. 1615-1619, Aug. 1982.
Kinkead Arnold
Pascal Robert J.
Storage Technology Corporation
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