Nec Corporation

Sega Corporation

Kouichi Nomura

Kenji Furukawa

In a game system, a player can displace direction of a view line disposed in a three-dimensional space coordinate system to change the corresponding perspective-projected image by changing the aim of the gun-type controller, by setting a specific region on a perspective projection plane; detecting a designated position with respect to a display plane, which is designated; determining whether or not the designated position is located in a specific region; displacing the view line direction or moving the view point position based on the positional relationship of the designated position and the specific region when the designated position is not positioned inside the specific region; and finding a two-dimensional image obtained by perspective projection in the new view line direction after the displacement of the view line direction or movement of the view point position and displaying two-dimensional images on the display device.

Image display control method

This semiconductor memory device is provided with a plurality of main bit lines; a main bit line controller for controlling whether to impress a specific voltage on the main bit lines, connect the main bit lines to a sense amplifier, or place the main bit lines in the OPEN state, based on an address signal; a plurality of virtual main grounding lines; and a virtual main grounding line controller for controlling whether to impress a specific voltage on the virtual main grounding lines, impress a grounding voltage on the virtual main grounding lines, or place the virtual main grounding lines in the OPEN state, based on an address signal. The main bit line controller and the virtual main grounding line controller control the voltage impression states of the main bit lines and the virtual main grounding lines respectively, so that, when accessing a memory cell, the relative positional relationship of the voltage level states of the virtual main grounding lines and other main bit lines that are adjacent to and at specific intervals of space from the main bit line connecting the selected memory cell and the sense amplifier, will be the same for any memory cell selected.

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Tokyo, Japan

Kouichi Nomura