Other

Hitachi Device Engineering Co., Ltd.

Hitachi, Ltd.

Fujitsu Corporation

Renesas Technology Corp.

Naoki Kobayashi

Hideaki Kurata

Shunichi Saeki

A copy control apparatus includes a processor. The processor is configured to record, in update location information, an update count for each of sectional areas obtained by sectioning a copy-source area. The update count indicates a number of updates of data in a sectional area. The update count is indicative of more than two values. The processor is configured to perform first copy of copying data in the copy-source area to a copy-destination area based on the update location information. The processor is configured to deter the first copy for data in a sectional area for which an update count indicating more than a predetermined number is recorded in the update location information.

Copy control apparatus and copy control method

A non-volatile memory device is provided which includes a flash memory having a plurality of banks and a bank selection register which can take on states at least equal in number to the number of banks. The bank selection register outputs a signal to point to one of the banks based upon one of the states of the bank selection register. A controller is also provided having a plurality of data buffers corresponding, respectively, to the banks. In addition to word lines, bit lines and memory cells, each bank includes a data register to temporarily hold data to be written to the memory cells. The controller transmits data in the data buffer to the data register of the pointed to bank, while the flash memory writes data held in the data register to the memory cells of another one of the banks.

Non-volatile semiconductor memory device and semiconductor disk device

A non-volatile semiconductor memory device is capable of having its individual banks controlled separately from the outside, and a semiconductor disk device is capable of proceeding immediately to the next writing to a bank of non-volatile semiconductor memory device which has become ready. Each bank has the independent write operation of data from its data register to memory cells, enabling the transfer of data from the outside to the data register of the bank even during the write operation of other bank from the data register to memory cells thereof.

Growing community of inventors

Setagaya, Japan

Naoki Kobayashi