Patent ID: 7972010

Claim:
A projector, comprising: an original image processing section that receives an external image signal corresponding to an original image from an image source unit; a remote control reception section that receives a command signal to control information of a pointer image from a remote controller; a remote control reception processing section that receives the command signal through the remote control reception section and based on a command from a main control section, transmits the command signal, the main control section including a storage section that stores pointer image display data and the main control section updating the pointer image display data that is stored in the storage section; an addition image processing section that receives the command signal through the remote control reception processing section and transmits an auxiliary signal based on the command signal; and an interface unit that receives the auxiliary signal through the addition image processing section and distributes the auxiliary signal for projecting the pointer image through a plurality of separately provided external projectors, wherein based on the auxiliary signal the pointer image together with the original image is displayed on a plurality of external projection screens respectively provided in front of the plurality of separately provided external projectors, and the plurality of separately provided external projectors are provided in different locations than a projection screen of the projector; the remote control reception processing section transmits the command signal to the main control section, and further transmits the command signal only if the main control section instructs the remote control reception processing section to further transmit the command signal; and the main control section determines whether to instruct the remote control reception processing section to further transmit the command signal based on a determination that the command signal is necessary for processing in the addition image processing section.