METHOD OF CACHING TELETEXT PAGE DATA, TELETEXT RECEIVER SYSTEM AND ELECTRONIC VIDEO APPLIANCE

摘要

Method of caching teletext page data received from an arrangement of a channel selection circuit, arranged to retrieve a signal comprising video information and embedded teletext page data and belonging to a channel selected in accordance with a user command, and a teletext retrieval circuit, arranged to extract the teletext page data embedded in the received signal. A count of elapsed time is started upon determining that a user command for a switch from a first selected channel to a second selected channel has been issued. Storage of received teletext page data in a memory unit is commenced when the count exceeds a certain time interval. The count of elapsed time is re-started from zero if it is determined that a user command to switch from the second selected channel to any other selected channel has been issued.