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:
Dec. 06, 2005
Filed:
Nov. 20, 2003
Tetsuya Iida, Kokubunji, JP;
Motoki Kanamori, Tachikawa, JP;
Atsushi Shikata, Higashimurayama, JP;
Takayuki Tamura, Higashiyamato, JP;
Kunihiro Katayama, Chigasaki, JP;
Tetsuya Iida, Kokubunji, JP;
Motoki Kanamori, Tachikawa, JP;
Atsushi Shikata, Higashimurayama, JP;
Takayuki Tamura, Higashiyamato, JP;
Kunihiro Katayama, Chigasaki, JP;
Renesas Technology Corp., Tokyo, JP;
Abstract
There is provided a technology to realize high speed data transfer while compatibility of a card type storage device comprising a nonvolatile memory is ensured. Namely, in the card type storage device comprising the nonvolatile memory, a plurality of data terminals are provided and an interface unit is provided with a circuit for determining levels of data terminals. Some or all of the plurality of data terminals are connected with pull-up resistors for pulling up to a power source voltage. When the determination circuit determines that the data terminals connected with the pull-up resistors are in an open condition, the determination circuit switches a bus width (number of bits) of data.