Patent ID: 8656485
Filing Date: 2014-02-18
Classification: G06F,H04N

Abstract:
1. A projection display device comprising: a storing unit in which setting information including environmental setting information indicating a usage environment and a preset authorized password are stored; an image projecting unit that projects an image based on the setting information; an inputting unit that receives a user operation; and a controlling unit that performs an authentication that whether or not a password which is input as user operation matches the preset authorized password, and operates the projection display device in an operation mode based on a result of the authentication, wherein in case that the password which is input matches the preset authorized password, the controlling unit operates the projection display device in a normal mode in which the image projection unit projects the image in a state that an operation to change the environmental setting information as user operation can be received, and in case that the password which is input does not match the preset authorized password, the controlling unit operates the projection display device in a function restricted mode in which the image projection unit projects the image in a state that an operation to change the environmental setting information as user operation is disabled to be received, wherein the environmental setting information includes information which is set in accordance with a usage environment, the usage environment including at least one of a brightness of an audio-visual room, a positional relationship with a screen, and a connection to a network.