发明名称 FM teletext receiving device with a detachable storage medium
摘要 A service information receiving device receives pay service information and year/month/day-of-month data, both multiplexed with FM broadcast radiowaves and transmitted from an FM broadcasting station. The device compares the use end date data, stored in an information storage medium which is detachable from the device, with the year/month/day-of-month data received by the device, and the device permits the display of the pay service information during the period in which these two sets of data disagree with each other, and after they have coincided with each other, inhibits the display of the pay service information.
申请公布号 US5909184(A) 申请公布日期 1999.06.01
申请号 US19950561498 申请日期 1995.11.20
申请人 CASIO COMPUTER CO., LTD. 发明人 TAJIMA, YOICHIRO
分类号 H04B1/16;H04H20/34;H04H60/15;H04H60/16;H04H60/22;(IPC1-7):H04Q19/02;G09G5/00 主分类号 H04B1/16
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