Abstract: A disc changing device for a compact disc player including a tray box containing a plurality of stacked trays, the tray box being mounted in a body of the compact disc player such that it is vertically movable, and a door member mounted to the player body such that it is forwardly ejected out of the player body and rearwardly inserted into the interior of the player body by a drive power from a motor along with a selected one of the trays to carry out a disc change. The tray box is disposed at a position corresponding to a front portion of the door member completely inserted into the player body. A movable member is disposed on the door member such that it is slidable to move a selected one of the trays between the front portion of the door member and a deck of the compact disc player disposed rearwardly of the door member.

Abstract: Provided are a method and apparatus for providing and using content advisory (CA) information on Internet contents. A method of providing CA information by using a CA information server, includes receiving a request for the CA information on a content, from an Internet Protocol television (IPTV); searching for CA information on the content; and transmitting the found CA information to the IPTV. A method of using CA information when an IPTV reproduces a content not having the CA information, according to the present invention, includes transmitting a request for CA information, to a CA information server; receiving the CA information from the CA information server; analyzing the CA information; and applying the CA information.