Kabushiki Kaisha Toshiba

Kazuya Kawamoto

Yoshiyuki Tanaka

Hiroshi Sukegawa

Takeaki Sato

Yasuo Kudo

Makoto Yatabe

Mikito Nakabayashi

Hiroshi Nakamura

Takashi Mori

In a memory system using a storage medium, which is inserted into an electronic apparatus via a connector to add a memory function thereto, the storage medium has a GROUND terminal, a power supply terminal, a control terminal and a data input/output terminal, and the connector has a function of being sequentially connected to each of the terminals. When the storage medium is inserted into the connector, the GROUND terminal and control terminal of the storage medium are connected to corresponding terminals of the connector before the power supply terminal and data input/output terminal of the storage medium are connected to corresponding terminals of the connector. Thus, it is possible to improve the stability when a memory card is inserted into or ejected from the memory system.

Method for controlling non-volatile semiconductor memory system

In a memory system using a removable recording medium and data stored in the recording medium, identifying information for identifying each recording medium from others is held in the recording medium, and when data stored in the recording medium is used, the identifying information of the recording medium is required. As a result, when a flash memory card, etc. is used, a copyright is reliably protected.

Memory device storing identifying information and memory card including the same

A nonvolatile memory system comprises a nonvolatile memory having a plurality of data areas; and a memory controller operative to control read and write operations to the nonvolatile memory. The memory controller successively executes read/write operations to plural sectors within a selected data area in the nonvolatile memory in accordance with a command and a sector count and sector address fed from a host device.

Nonvolatile memory system, and data read/write method for nonvolatile memory system

In a memory system using a storage medium, which is inserted into an electronic apparatus via a connector to add a memory function thereto, the storage medium has a GROUND terminal, a power supply terminal a control terminal and a data input/output terminal, and the connector has a function of being sequentially connected to each of the terminals. When the storage medium is inserted into the connector, the GROUND terminal and control terminal of the storage medium are connected to corresponding terminals of the connector before the power supply terminal and data input/output terminal of the storage medium are connected to corresponding terminals of the connector. Thus, it is possible to improve the stability when a memory card is inserted into or ejected from the memory system.

Memory system

A data writing method is disclosed. In a memory system comprising a NAND flash memory and a controller which controls the memory, the memory system storing data provided from a host to the NAND flash memory, the data writing method comprises a steps of specifying a column address in which a column failure which has occurred in the NAND flash memory by the controller, and a step of, during writing into the NAND flash memory, writing data of a first logic level into a memory cell which corresponds to the specified column address regardless of write data provided from the controller.

Memory system and data writing method

A semiconductor memory device includes a block and a reading portion. In the block, a plurality of memory cells are arranged in rows and in columns, and the block includes blocks including a plurality of pages. Each page is configured by a plurality of memory cells which are arranged in rows. The reading portion reads data of said plurality of pages in the block as a logical product for each column direction.

Growing community of inventors

Sagamihara, Japan

Kazuya Kawamoto