An apparatus for controlling function displays in a combined device of a compact disc graphics player and a video cassette recorder, said apparatus comprising:
- a function control inputting section for outputting function control input signals which are playing, and for inputting signals by operating operator's buttons through a front control panel of the function control inputting section;
- a controlling section for outputting a first, a second and a third signals, and a function control signal/switching signal by judging a corresponding playing device to the function control input signals provided by said function control inputting portion;
- a compact disc graphics player for outputting a composite image on a monitor and for reproducing an audio signal by reading out data recorded on a compact disc graphics through a light controlled by the control section in response to an input signal for reproducing a compact disc graphics, the input signal being provided by said function control inputting section;
- a video cassette recorder either for reproducing the audio signal while outputting a composite image signal on the monitor by reading out video/audio data recorded on a video tape under the control of said controlling section in response to signals for VCR playing and recording inputting signals provided by said function control input section, or for recording either television image signals from a tuning section or composite image signals inputted from external inputting terminals on the video tape;
- a control data storing section for storing a first, a second and a third function display data which are read by the first control signal provided by said control section;
- a program switching section for forming output paths of first exclusive function display data exclusively used by said compact disc graphics player, second common function display data commonly used both by said compact disc graphics player and by said video cassette recorder, and third function display data exclusively used by the video cassette recorder, which are stored in said control data storing section by the third control signal from said control section, and for outputting a first, a second and a third program switching signals corresponding to each of said function display data, said program switching section including a first, a second and a third program switches;
- an on screen-display data storing section for storing on-screen-display data;
- an on-screen-display processing section for outputting an on-screen-display processing signal as a video outputting signal on a monitor by inputting a first signal among the first, the second and the third program switching signals from said program switching section, the second control signal from said control section and a video signal from a video switching outputting section;
- a fluorescent display panel driving section for outputting a fluorescent display panel driving signal by inputting a second signal among said first, said second and said third program switching signals from said program switching section and the second control signal from said control portion;
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- a fluorescent display panel section for displaying presently operating functions by inputting the fluorescent display panel driving signal from said fluorescent display panel driving section.