Lapis Semiconductor Assigned Patent

Lapis Semiconductor Co., Ltd., Yokohama, Japan, has been assigned a patent (10,381,062) developed by Yamada, Takashi, Yokohama, Japan, for a “non-volatile semiconductor storage device.“

The abstract of the patent published by the U.S. Patent and Trademark Office states: ”A non-volatile semiconductor storage device including a first potential retention line configured to retain a potential corresponding to data read from the memory cell, a second potential retention line configured to retain a reference potential read from the memory cell in which the reference potential is written after the data is read out, a sense amplifier configured to amplify a difference between the potential retained by the first potential retention line and the reference potential for reading out the data from the memory cell, a first offset adjustment circuit connected to the first potential retention line, for adjusting an offset for the potential, a second offset adjustment circuit connected to the second potential retention line, and an offset command signal supply circuit configured to supply a first offset command signal to the first offset adjustment circuit so as to control the offset.”

The patent application was filed on February 4, 2019 (16/266,642).