首页> 外国专利> schaltungsanordnung with interactive benutzerdialoge simulierender operation in videotext / kabeltext systems without a return channel

schaltungsanordnung with interactive benutzerdialoge simulierender operation in videotext / kabeltext systems without a return channel

机译:具有交互式用户对话框的电路布置,可模拟无返回通道的图文电视/有线文本系统中的操作

摘要

The information system uses a television set or TV monitor (1) to output information. The information is transmitted in digitally coded form as a broadcast videotex signal in one or more TV channels, via cables (5) or in wireless fashion. The programme selection device and HF part (4) of the TV set (1) are used to select and demodulate the TV signal, and a broadcast videotex demodulator (6), which is familiar in itself, is provided for synchronisation and regeneration of the received digital signals. Specified parts of a bit sequence (e.g. about 7 Mbit/s) to be transmitted, which contain the code for a picture number or picture address, are continuously tested in an address interpretation circuit (7) to determine whether they correspond to the picture number or picture address specified in an address spectifying memory (8). If the result of this test is positive, specified quantities of following data are temporarily stored in a temporary memory (9), from which this data is passed at a reduced transmission rate to a broadcast videotex decoder (2), which is familiar in itself, for further processing. IMAGE
机译:信息系统使用电视机或电视监视器(1)输出信息。信息通过电缆(5)或以无线方式在一个或多个TV频道中以数字编码的形式作为广播的videotex信号进行传输。电视机(1)的节目选择装置和HF部分(4)用于选择和解调电视信号,并且提供了本身熟悉的广播视讯解调器(6),用于电视的同步和再生。接收到的数字信号。包含图像号或图像地址的代码的要传输的比特序列的指定部分(例如,大约7 Mbit / s)在地址解释电路(7)中进行连续测试,以确定它们是否对应于图像号或在地址指定存储器(8)中指定的图片地址。如果测试结果为肯定,则将指定数量的后续数据临时存储在临时存储器(9)中,该数据以降低的传输速率从该临时存储器传递到本身熟悉的广播可视频解码器(2) ,以便进一步处理。 <图像>

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