DEVICE MOUNTED ON TRANSPORTATION VEHICLE Russian patent published in 2010 - IPC G06F3/00 H04N7/18 G06F17/30 

FIELD: information technology.

SUBSTANCE: audio-video device has a connection unit which is connected to an external device; a first control button used to start processing search for content parts stored in an external device; a unit for receiving a content list which, when an operation is carried with the first control button, receives from the external device a content list having a hierarchical structure in accordance with which content parts are classified as elements; a storage unit storing the content list received by the unit for receiving the content list; a second control button having an operations controller which can be turned and pressed and when the operations controller is turned, elements of the content list displayed by a given part of a display are selected and when the operations controller is pressed, display in the content list changes from the upper level to the lower level and an element is set; a third control button used to change the displayed content list from the lower level to the upper level; and a unit for controlling light emission which gives instructions to carry out operations prompting to carry out the next operation by changing the state of light emission of the second control button when an operation is carried out with the first control button.

EFFECT: broader functionalities of the device.

7 cl, 28 dwg