Telecommunications – Receiver or analog modulated signal frequency converter – Convertible to different type
Patent
1981-02-12
1983-04-19
Bookbinder, Marc E.
Telecommunications
Receiver or analog modulated signal frequency converter
Convertible to different type
179 1P, 179 1VE, 179 1VL, 455212, 455219, 455238, 455247, 455297, H04B 110, H03G 324
Patent
active
043808247
ABSTRACT:
A receiving reproducing system for an automotive radio detects the surrounding noise level other than the output sound thereof, in the sound field extending in the passenger compartment of an automobile, and the level which is dependent upon the received signal level of an antenna. The receiving reproducing system partly controls its output sound volume proportionally in accordance with the surrounding noise level and partly lowers its output sound volume in dependence upon the reduction in the received signal level. Even under the circumstances where the surrounding noise level is high and where the received signal level is low, the sound volume of the output sound containing many noises can be prevented from being raised.
REFERENCES:
patent: 2409058 (1946-10-01), Mitchell
patent: 3374437 (1968-03-01), Heald
patent: 3497622 (1970-02-01), Markin et al.
patent: 3673499 (1972-06-01), Avins et al.
patent: 3679979 (1972-07-01), Krepps, Jr. et al.
patent: 3821649 (1974-06-01), Grosjean
patent: 4037057 (1977-07-01), Ogita et al.
patent: 4061874 (1977-12-01), Fricke et al.
patent: 4198603 (1980-04-01), Aldridge et al.
patent: 4254303 (1981-03-01), Takizawa
Electronik Praxis-"Ein Filter Hoher _Gute mit Negativimpedanz"and Gerauschgesteurte Lautstarke-Einstellschaltung, Ullrich Bollinger-May 1976, No. 5, p. 104.
Bookbinder Marc E.
Hitachi , Ltd.
LandOfFree
Receiving reproducing system does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Receiving reproducing system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Receiving reproducing system will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-839799