| abstract |
(57) [Abstract] [Purpose] An on-screen display message is supplied to a character generator without losing any teletext data stored in page memory. [Configuration] A data acquisition circuit DA via an interface circuit MIC under the control of a microprocessor PRO. It comprises a teletext decoding section with a page memory PM for reading teletext data from C, using a microprocessor to control the functions of the television receiver and also to generate on-screen display messages, If it is necessary to generate an on-screen display message, the microprocessor sets a bit in the memory PM which sets the latch circuit L, which causes the multiplexer MUX to supply the data from the auxiliary memory AMP to the character generator CG. However, if it is necessary to clear the on-screen display message, the memory P The bit in M is reset, the latch circuit L is reset, and the multiplexer supplies the data from the page memory to the character generator. |