Method and apparatus for adjustment and control of an iterative method of recording analog signals with on-chip trimming techniques
US5623436A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 4, 1994 |
| Grant date | Apr 22, 1997 |
| Priority date | — |
| Expiry date | Nov 4, 2014 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11C29/028
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Method and apparatus for adjustment and control of an iterative method of recording analog signals with on-chip trimming techniques for later playback. The invention allows setting of various parameters for the multi iterative programming technique after chip fabrication so as to allow tighter control and thus higher resolution analog signal sample storage in a given or minimum amount of time. Such parameters include, but are not limited to: the step down voltage from the coarse programming cycle to the fine programming cycle, the incremental voltage increase between each fine pulse, the pulse width of each fine pulse, the number of fine pulses, the incremental voltage increase between each coarse pulse, the pulse width of each course pulse, the number of coarse pulses, and the offset, VOS, which stops further coarse pulses and holds the last coarse level as a reference for the following fine cycle.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.