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:
Jul. 16, 2002
Filed:
Aug. 13, 2001
Tsunehiro Tobita, Yokohama, JP;
Jun Kitahara, Yokohama, JP;
Takashi Tsunehiro, Ebina, JP;
Kunihiro Katayama, Yokohama, JP;
Ryuichi Hattori, Kawasaki, JP;
Yukihiro Seki, Yokohama, JP;
Hajime Yamagami, Ebina, JP;
Takashi Totsuka, Machida, JP;
Takeshi Wada, Akishima, JP;
Yosio Takaya, Funabashi, JP;
Manabu Saito, Chiba-ken, JP;
Kenichi Kaki, Zama, JP;
Takao Okubo, Oume, JP;
Takashi Kikuchi, Sagamihara, JP;
Masamichi Kishi, Tachikawa, JP;
Takeshi Suzuki, Inagi, JP;
Shigeru Kadowaki, Akishima, JP;
Other;
Abstract
A semiconductor file system features a first nonvolatile memory electrically erasable, a second nonvolatile memory not electrically erasable, a volatile memory, a controller, and a control section which controls the controller wherein a physical address corresponding to a logical address specified from an external system is accessed. The first nonvolatile memory stores data for the external system to perform operations, first management information indicating correspondence between physical and logical addresses, and second management information indicating a state of the first nonvolatile memory. The second nonvolatile memory previously stores interface information. The controller determines a physical sector address. The control section is for controlling input/output of data from/to the external system and for temporarily storing write data into the first nonvolatile memory from the external system in the volatile memory and then transferring the write data from the volatile memory to the first nonvolatile memory.