Static information storage and retrieval – Analog storage systems
Patent
1998-04-27
1999-10-05
Hoang, Huan
Static information storage and retrieval
Analog storage systems
36518503, 36518519, 36518529, 36518907, G11C 2700
Patent
active
059634626
ABSTRACT:
An integrated circuit which operates to store an input analog signal within an analog storage device such as an EEPROM is disclosed. Initially, a target voltage is determined for applying to the memory cell with the target voltage set to about 90% of the input analog signal voltage. A high voltage ramp is applied to the memory cell to set the voltage of the memory cell to the target voltage. A read operation is simultaneously performed while the high voltage ramp is applied to detect the voltage stored on the cell and to terminate the application of the high voltage ramp once the target voltage is reached. Thereafter, a normal read operation is performed on the memory cell to detect the actual voltage of the cell. A new target voltage is determined based upon the actual voltage of the memory cell and the input analog signal voltage. The high voltage ramp is again connected to the memory cell to set the cell to the new target voltage while a simultaneous read operation is performed. The "read-while-writing" operations are performed a predetermined number of times to achieve precise programming of the cell. Different embodiments are disclosed.
REFERENCES:
patent: 4054864 (1977-10-01), Audaire et al.
patent: 4094007 (1978-06-01), Minami
patent: 4890259 (1989-12-01), Simko
patent: 4910706 (1990-03-01), Hyatt
patent: 4989179 (1991-01-01), Simko
patent: 5126967 (1992-06-01), Simko
patent: 5164915 (1992-11-01), Blyth
patent: 5175706 (1992-12-01), Edme
patent: 5218571 (1993-06-01), Norris
patent: 5220531 (1993-06-01), Blyth et al.
patent: 5239500 (1993-08-01), Oguey
patent: 5241494 (1993-08-01), Blyth et al.
patent: 5243239 (1993-09-01), Khan et al.
patent: 5289401 (1994-02-01), Shima
patent: 5294819 (1994-03-01), Simko
patent: 5352934 (1994-10-01), Khan
patent: 5388064 (1995-02-01), Khan
patent: 5444656 (1995-08-01), Bauer et al.
patent: 5508958 (1996-04-01), Fazio
Blyth Trevor
Engh Lawrence D.
Hoang Huan
Information Storage Devices, Inc.
LandOfFree
Integrated circuit system for analog signal storing and recovery does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Integrated circuit system for analog signal storing and recovery, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Integrated circuit system for analog signal storing and recovery will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1179268