Memory system having servo compensation

Static information storage and retrieval – Analog storage systems

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365222, 179 1J, G11C 2700, G11C 700

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active

043228194

ABSTRACT:
The present invention is directed to a servo system for compensation of memory signals. In a preferred embodiment, the memory system is a CCD analog read only memory system. In alternate embodiments, the memory system may include an alterable memory, a bubble memory, and/or other memories. Adaptive servo compensation is provided by storing reference signals and compensating stored information signals with the stored reference signals using a compensation servo arrangement. The servo may be an implicit servo for compensating signal amplitude such as to correct charge transfer errors in a CCD memory.

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Carnes et al., Charge-Coupled Devices and Applications, Solid State Technology, 4/74, pp. 67-77.
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White et al., A Nonvolatile Charge-Addressed Memory (NOVCAM) cell, IEEE Jour. of Solid State Circuits, vol. SC10, No. 5, pp. 281-287, 10/75.
Bruun et al., Analog Capacitance ROM with IGFET Bucket-Brigade Shift Register, IEEE Jour. of Solid State Circuits, vol. SC-10, No. 1, pp. 55-59, Feb. 1975.

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