The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 25, 1999
Filed:
Aug. 11, 1997
In-Hwan Hwang, Kyungki-do, KR;
Samsung Electronics, Co., Ltd., Suwon-city, KR;
Abstract
A data writing apparatus is disclosed wherein an M-bit data word is converted into an analog data signal using maximum and minimum reference voltages and the analog data signal and the maximum and minimum reference voltages are stored in a nonvolatile memory. One embodiment of the present invention stores the analog data signal in a first nonvolatile memory cell by adjusting a threshold voltage of the memory cell to correspond to the analog data signal and stores the maximum and minimum reference voltages by similarly adjusting the threshold voltages of a second and third nonvolatile memory cell, respectively. A data reading apparatus is shown which reads an analog data signal and maximum and minimum reference voltages from a nonvolatile memory device and converts the analog data signal into an M-bit data word using the maximum and minimum reference voltages.