Patent ID: 7952762
Filing Date: 2011-05-31
Classification: H04N

Abstract:
1. An electronic blackboard comprising: a writing surface; an optical reader for optically reading an image written on the writing surface and for outputting the read image as image data; a printer; a connector for removably connecting an external storage medium; an input device operable by an operator to input a copy instruction to instruct the optical reader to read the image on the writing surface, and a density control instruction for starting a density controlling process for causing a density of the image data of the read image to be darker; an image controller for executing the density controlling process on the image data of the read image; a memory for temporarily storing the image data outputted from the optical reader; and a controller; wherein the controller, in response to the copy instruction: wherein the controller, in response to the density control instruction being input after the control performed in response to the copy instruction: wherein the controller executes a process for determining whether or not the external storage medium is connected to the connector, and when the external storage medium is not connected to the connector, the controller causes the printer to print a warning message which informs the operator that the external storage medium is not connected to the connector.