Method for the counting down of units in a memory card

Details Method for the counting down of units in a memory card Method for the counting down of units in a memory card

1995-09-11

1996-11-19

Clawson, Jr., Joseph E.

Static information storage and retrieval

Floating gate

Particular connection

36518512, 36518523, 36518526, 36518513, 365201, 36523006, 365236, G11C 1606

Patent

active

055769896

ABSTRACT:
In a memory card designed to count down a number of units by successive programming of non-volatile, electrically erasable and electrically programmable memory cells, the memory is organized into N rows of P cells, the weight of the cells of one row in the account being P times the weight of the next-ranking row. The countdown procedure is recurrent and consists in making a search, in scanning the memory according to the rising order of weights, of an erased cell, programming this cell and an erased cell and then erasing the entire row having an immediately lower rank unless the erased cell is located in the first row, and in recommencing this recurrent procedure until an erased cell is found in the first line. The auxiliary cell enables the detection of an abnormal interruption of the recurrent procedure and the restoring of the exact account of the memory which could have been distorted by this abnormal interruption.

REFERENCES:
patent: 4827450 (1989-05-01), Kowalski
patent: 4868489 (1989-09-01), Kowalski
patent: 4881199 (1989-11-01), Kowalski
patent: 4890187 (1989-12-01), Kowalski et al.
patent: 4896298 (1990-01-01), Kowalski
patent: 4916333 (1990-04-01), Kowalski
patent: 5003371 (1991-03-01), Kowalski et al.
patent: 5022001 (1991-06-01), Kowalski et al.
patent: 5060198 (1991-10-01), Kowalski
patent: 5060261 (1991-10-01), Kowalski et al.
patent: 5097146 (1992-03-01), Kowalski et al.

Affiliated with

Also associated with

Rating

Method for the counting down of units in a memory card does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method for the counting down of units in a memory card, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for the counting down of units in a memory card will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-546129