Kabushiki Kaisha Toshiba

Maki Ueno

Nobuhiro Ide

Atsushi Kunimatsu

Atsuhi Kunimatsu

An internal memory section is divided into plural memory blocks. During a period of time, a relevant memory block of the internal memory section is connected to an external memory unit, while another memory block thereof is connected to a data holding section. During a succeeding period of time, the relevant memory block is connected to the data holding section, while the other memory block is connected to the external memory unit. Data exchange between the data holding section and the external memory unit via the internal memory section is performed while the alternative connection is repeated.

Graphic translate engine, floating point arithmetic unit and floating point multiply-add calculation unit

A data processor has a general purpose register for storing arithmetic data and arithmetic results; an arithmetic device for MAC for performing a predetermined arithmetic operation by using the arithmetic data read from the general purpose register and outputting its arithmetic results to the general purpose register after a predetermined cycle; an arithmetic device for DIV for performing a predetermined arithmetic operation by using data read from the general purpose register and outputting its arithmetic results after a cycle longer than the predetermined cycle relative to the arithmetic device for MAC; and a temporary storing register for storing the arithmetic results outputted from the arithmetic device for DIV until the next arithmetic operation is terminated.

Growing community of inventors

Tokyo, Japan

Maki Ueno