Optical disc reproducing apparatus having displaying made control key functions

An optical disc reproducing apparatus for reproducing an optical disc, the optical disc reproducing apparatus having a main body portion and comprising:

• optical disc reproducing means for reproducing an optical disc on which only audio digital information is recorded or an optical disc on which video information is recorded alone or in addition to the audio information, the reproducing means including means for decoding the video information into a video signal;
• disc discriminating means connected to the optical disc reproducing means for discriminating a type of the optical disc being reproduced by the optical disc reproducing means, that is whether the optical disc is an optical disc on which only audio digital information is recorded or an optical disc on which video information is recorded alone or in addition to the audio information;
• display means, including a screen hinged to the main body portion, for selectively displaying the video signal and operation key icons on the screen simultaneously;
• display controlling means for changing the display on the display means depending on the type of the optical disc designated by a discriminating output of the disc discriminating means;
• operation key means, including a plurality of operation keys mounted on the main body portion of the disc reproducing apparatus, for selectively inputting a plurality of control information signals;
• and
• control means, supplied with the control information signals and the discriminating output of the disc discriminating means for controlling the means for reproducing to respond to the control information signals and for causing the display means to display simultaneously with the video signal different pluralities of operation key icons, depending upon the type of optical disc being reproduced, the icons being representative of control operations corresponding to the control information signals whereby a user of the disc reproducing apparatus can select a control operation corresponding to one of the operation key icons by selective operation of the operation key means.