Telecommunications – Receiver or analog modulated signal frequency converter – Signal selection based on frequency
Patent
1989-06-09
1990-10-09
Eisenzopf, Reinhard J.
Telecommunications
Receiver or analog modulated signal frequency converter
Signal selection based on frequency
455188, 455158, H04B 1116
Patent
active
049625446
ABSTRACT:
A radio receiver having a theft prevention system using an anti-theft code, wherein a region code, corresponding to various regions in the world, is inputted by a user to set the receiver to the proper receiving standards of the selected region, and wherein an anti-theft code is inputted by the user. If the anti-theft code inputted by the user corresponds with a previously stored anti-theft code, the receiving standards are set within the receiver and the receiver is enabled.
REFERENCES:
patent: 4048570 (1977-09-01), Sumi
patent: 4303944 (1981-12-01), Kitamura
Alpine Electronics Inc.
Eisenzopf Reinhard J.
Kuntz Curtis
Shoup Guy W.
Winters Paul J.
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