초록 ▼

In the display control device of the present invention, individual control signals are supplied to a liquid crystal display device and a television-signal encoder respectively from a reading circuit so that RGB data, stored in a display memory, is commonly used by those devices. Therefore, the numbe

In the display control device of the present invention, individual control signals are supplied to a liquid crystal display device and a television-signal encoder respectively from a reading circuit so that RGB data, stored in a display memory, is commonly used by those devices. Therefore, the number of data bus lines, that is, the number of terminals of the display control circuit, can be reduced to, for example, 18, namely, 6 for each of the colors of R, G and B; thus, the number of terminals for RGB data can be reduced to 1/2. With this arrangement, in a display control circuit that is capable of display-driving a liquid crystal display device installed as an integral part of an appliance such as a portable-type information terminal as well as display-driving an external television receiver simultaneously so as to display the same image, the number of terminals of the display control circuit can be reduced even when the display control circuit serving as a digital and the television-signal encoder containing an analog portion are provided as separated devices.

대표청구항 ▼

1. A display control circuit, which carries out the same image display simultaneously on a non-interlace matrix display device and on an interlace television receiver through a digital encoder, comprising:common storage means for storing RGB data to produce identical displays on the matrix display d

1. A display control circuit, which carries out the same image display simultaneously on a non-interlace matrix display device and on an interlace television receiver through a digital encoder, comprising:common storage means for storing RGB data to produce identical displays on the matrix display device and the television receiver simultaneously; and single reading means for reading the RGB data from the storage means and for outputting respective first and second control signals related to the displays on the matrix display device and the digital encoder, wherein, when there is a specific relationship between the number of scanning lines of the matrix display and the number of effective scanning lines of the television receiver, the reading means outputs the same RGB data read from the storage means to the matrix display device and the digital encoder after a predetermined time period has elapsed from receipt of a vertical synchronous signal, and also outputs the first and second control signals individually.