EP 0224900 A3 19890906 - RADIO FREQUENCY SWITCHING, REGULATION, AMPLIFICATION AND/OR ATTENUATION SYSTEM
Title (en)
RADIO FREQUENCY SWITCHING, REGULATION, AMPLIFICATION AND/OR ATTENUATION SYSTEM
Publication
Application
Priority
IT 2307885 A 19851203
Abstract (en)
[origin: EP0224900A2] Switching, regulation, amplification and/or attenuation system which may be adapted to switches with several R.F. inlets, R.F. amplifiers and R.F. convertor selectors, suitable to be employed for the realization of radio and television reception systems or the like, whether fixed or mobile which comprises a power supply and control box (1) containing a radio-frequency filter or injector; a block (20) consisting of a standard unit for the selection, conversion and processing of the R.F. signals and/or an R.F. switch with several R.F. inlets and identification, switching and regulation circuits capable of identifying both the polarity and the particular value of the voltages received, coming from control and power supply box (1) and consequently to control the coupled control circuits of the R.F. switch and/or R.F. conversion and processing unit; one or more blocks or modules (25) or (25 min ), whether inserted or not in the same block (20), consisting of amplification, attenuation or tuning circuits of the R.F. signals, combined with power supply and regulation circuits able to power, at constant voltage, the above mentioned R.F. amplification, attenuation or tuning circuits, and to carry out the regulation by utilizing the same voltages at different polarities, transmitted, in turn, by control box (1).
IPC 1-7
IPC 8 full level
H04H 20/76 (2008.01)
CPC (source: EP)
H04H 20/76 (2013.01)
Citation (search report)
- [Y] WO 8202303 A1 19820708 - DELTAKABEL BV [NL], et al
- [Y] GB 1515098 A 19780621 - COMMUNICATIONS PATENTS LTD
- [A] FR 2427732 A1 19791228 - MONTORIO SALVATORE [IT]
- [A] US 4338632 A 19820706 - FALATER SCOTT L
- [A] GB 2081948 A 19820224 - SONY CORP
Designated contracting state (EPC)
AT BE CH DE ES FR GB GR LI LU NL SE
DOCDB simple family (publication)
EP 0224900 A2 19870610; EP 0224900 A3 19890906; IT 1186228 B 19871118; IT 8523078 A0 19851203
DOCDB simple family (application)
EP 86116650 A 19861201; IT 2307885 A 19851203