JPS5813787U - teletext receiver - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of the drawing]

FIG. 1 is a schematic block diagram of an embodiment of this invention. FIG. 2 is an illustrative diagram showing data stored in the refresh memory shown in FIG. 1. In the figure, 3 is a refresh memory, 4 is a CPU, and 5 is a refresh memory.
is a ROM, 5 is an I10 port, 7 is a decoder, 8 is a vertical counter, 9 is an address converter, 10 is a DMA control unit,
13 indicates a keyboard.

Claims (1)

[Claim for Utility Model Registration] Text broadcasting in a single character multiplex broadcasting system that transmits multiple character program data during multiple horizontal scanning periods within a vertical retrace period and transmits the same character program data within the same horizontal scanning period. The receiver includes a buffer memory including a storage area for temporarily storing at least the plurality of text program data, and a buffer memory that stores each text program data in the buffer for each horizontal scanning period in response to telegraphing the text program data. a writing means for storing in the memory; a program specifying means for specifying desired text program data; a determining means for determining whether the text program data specified by the program specifying means is temporarily stored in the buffer memory; In response to the determination means determining that the text program data designated by the program designation means is stored in the buffer memory, only data of a horizontal period in which the text program data is subsequently transmitted is sequentially predetermined. comprising means for performing the processing and storing it in the buffer memory;
Teletext receiver.