Patent ID: 9442711
Filing Date: 2016-09-13
CPC Classification: G06F

Claim Text:
1. A communication device comprising: circuitry that receives the metainformation indicating the update from the update information providing device by communication with the update information providing device which is established on the basis of an address of the update information providing device, the address received from a communication management device which manages the communication performed by the communication device, and the communication management device provides the communication device with the address of the update information providing device but not the metainformation containing the version information of the update, and the update information providing device provides the communication device with the metainformation containing the version information of the update without going through the communication management device, the metainformation indicates whether an update is compulsory or non-compulsory, the circuitry controls display of the existence of the update on a display screen of a display, when the update is non-compulsory, the circuitry controls display of the display screen of the non-compulsory update to include an input area for confirmation of the update and an input area for cancellation of the update, when an input is received at the input area for confirmation of the update, the non-compulsory update is executed, and when an input is received at the input area for cancellation of the update, the non-compulsory update is not executed, when the update is compulsory, the circuitry controls display of the display screen of the compulsory update to include an input area for confirmation of the update without having an input area for cancellation of the update, and when an input is received at the input area for confirmation of the update, the compulsory update is executed, and the communication device is configured to participate in a conference call with at least one other communication device in a communication network, and when the metainformation includes update compulsory information that indicates a compulsory update, the circuitry is configured to prevent the user from executing any function related to participating in a conference call until the compulsory update is executed.