Patent ID: 7969417

Claim:
A multiple cursor system in a vehicle, the system comprising: a communicator for establishing a communication line with a portable device capable of operating a cursor; a drawing data storing unit for storing drawing data; a drawing memory device for developing drawing data; a control unit for displaying the cursor relative to the portable device in a display unit, and defining in the drawing memory device a memory space for the portable device; a determination unit for performing a determination as to whether or not the defined memory space is equal to or greater than a predetermined data volume when the cursor is operated to request a drawing from the portable device via the communicator, the control unit being further configured, when the determination is made such that the defined memory space is not equal to or greater than the predetermined data volume, to cause the display unit to display a transfer selection screen window to enable a user to determine an additional display unit to display the drawing, wherein: (i) when the determination is made such that the defined memory space is equal to or greater than the predetermined data volume, the control unit reads drawing data necessary for the drawing from the drawing data storing unit to develop the read drawing data in the memory space in the drawing memory device, thereby displaying a screen window in the display unit when the determination is affirmed; and (ii) when the determination is made such that the defined memory space is not equal to or greater than the predetermined data volume, the control unit reads drawing data necessary for the drawing from the drawing data storing unit, and transfers the read drawing data to an additional drawing memory device to develop the read drawing data in an additional memory space of the additional drawing memory device instead of in the memory space of the drawing memory device, thereby displaying a screen window in the additional display unit in a case that the user determines the additional display unit via the transfer selection screen window.