Patent ID: 8078968

Claim:
A projector comprising: a communication section which communicates with a plurality of external devices; a storage section which stores projection target data including a plurality of records and layout data to arrange the projection target data in a web page form; an update request reception section which receives an update request from the external devices via the communication section, and sequentially writes update request data indicating details of the update request into the storage section; an update section which updates the projection target data based on the update request data; a web information generation section which generates web information to display the projection target data in the web page form based on the projection target data and the layout data, and causes the communication section to transmit the web information to the external devices; an image generation section which generates an image based on the projection target data; and a projection section which projects the image, wherein the update section searches for a record in the projection target data that coincides with a position ID in the update request data, and updates the record that coincides with the position ID.