| 摘要 |
A portable radio information terminal apparatus capable of promptly moving a screen display to a desired layer in a multilayer screen display structure and a screen operating method for use in the apparatus. The terminal apparatus includes a command inputting discriminating circuit for determining whether an input signal supplied from an inputting circuit is generated by a predetermined command inputting operation, a movement control circuit for determining, based on a decision made by the command inputting discriminating circuit, whether the generated input signal continues and, if the generated input signal is found continuing, activating a layer-to-layer moving circuit and, if the generated input signal is stopped, stopping the layer-to-layer moving circuit. The layer-to-layer moving circuit causes for a layer-to-layer moving operation based on a command issued by the movement control circuit and executing a screen displaying operation on a destination layer, wherein, while the generated input signal continues, the layer-to-layer moving operation and the screen display operation on the destination layer are repeated.
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