Patent US3719930A successfully refreshed from Google Patents.
EP0149533A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Apparatus for receiving super high frequency signals
Assignee: Sony Corp
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Filing: 1985-01-10
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Granted: —
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Expires: 2005-01-10
Abstract
Abstract Apparatus for receiving super high frequency signals comprises an outdoor unit (2) which includes a converter (8) for converting super high frequency signals received by an antenna (1) to ultra high frequency signals, a local oscillator (9L, 9H) for generating a local signal supplied to the converter (8), a switch (14) for switching the frequency of the local signal, and a detecting circuit (15) for detecting an operating voltage supplied to the outdoor unit (2) and the value of which is changed according to a band range of the super high frequency signals, the output of the detecting circuit (15) controlling the switch (14); an indoor unit (4) which includes a demodulator (23) for generating the operating vottage; and a coaxial cable (3) for supplying the ultra high frequency signals from the outdoor unit (2) to the indoor unit (4) and also supplying the operating voltage from the indoor unit (4) to the outdoor unit (2).
Inventors
- 👤 Koji C/O Patent Division Ouchi
- 👤 Shinobu Patent Division Tsurumaru
- 👤 Tadashi Patent Division Kajiwara
- 👤 Kenichiro Patent Division Kumamoto
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-25 16:11
CPC Classifications
H; H04; H04B; H04B1/00; H04B1/06; H04B1/16; H04B1/18; H03; H03D; H03D7/00; H03D7/16; H03D7/161
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
187 words
Apparatus for receiving super high frequency signals, the apparatus comprising: an outdoor unit (2) comprising means (8) for converting super high frequency signals to ultra high frequency signals; an indoor unit (4) comprising means (23) for demodulating said ultra high frequency signals; and cable means (3) for supplying said ultra high frequency signals from said . outdoor unit (2) to said indoor unit (4) and supplying an operating voltage from said indoor unit (4) to said outdoor unit (2); characterised by: said outdoor unit (2) further comprising local oscillator means (9L, 9H) for generating a local signal which is supplied to said converting means (8), means (14) for switching the frequency of said local signal, and means (15) for detecting said operating voltage which is supplied to said outdoor unit (2) and the value of which is changed according to a band range of said super high frequency signals, the output of said detecting means (15) controlling said switching means (14); and said indoor unit (4) further comprising means (29) for generating said operating voltage in dependence on the band range of said super high frequency signals.
Claim 2
Dependent Claim
187 words
Apparatus for receiving super high frequency signals, the apparatus comprising: an outdoor unit (2) comprising means (8) for converting super high frequency signals to ultra high frequency signals; an indoor unit (4) comprising means (23) for demodulating said ultra high frequency signals; and cable means (3) for supplying said ultra high frequency signals from said . outdoor unit (2) to said indoor unit (4) and supplying an operating voltage from said indoor unit (4) to said outdoor unit (2); characterised by: said outdoor unit (2) further comprising local oscillator means (9L, 9H) for generating a local signal which is supplied to said converting means (8), means (14) for switching the frequency of said local signal, and means (15) for detecting said operating voltage which is supplied to said outdoor unit (2) and the value of which is changed according to a band range of said super high frequency signals, the output of said detecting means (15) controlling said switching means (14); and said indoor unit (4) further comprising means (29) for generating said operating voltage in dependence on the band range of said super high frequency signals.
Claim 3
Dependent Claim
41 words
Apparatus according to claim 1 wherein said local oscillator means (9L, 9H) comprises first and second local oscillators (9L, 9H) having different frequencies, an output signal of either of said oscillators (9L, 9H) being selectively supplied to said converting means (8).
Claim 4
Dependent Claim
41 words
Apparatus according to claim 2 wherein said outdoor unit (2) further comprises a regulator (13) for stabilizing said operating voltage, the output of said regulator (13) being selectively supplied to either of said oscillators (9L, 9H) by said switching means (14).
Claim 5
Dependent Claim
24 words
Apparatus according to claim 1 wherein said local oscillator means is a variable frequency oscillator, whose frequency is varied by said switching means (14).
Claim 6
Dependent Claim
149 words
Apparatus according to claim 1 wherein said converting means (8) comprises a converter (6) for converting circularly polarized super high frequency signals to linearly polarized super high frequency signals, an amplifier (7) supplied with said linearly polarized super high frequency signals, and a mixer (8) supplied with the output of said amplifier (7) and said local signal, said mixer (8) producing said ultra high frequency signals, and said demodulating means (23) comprises a tuner (18) supplied with said ultra high frequency signals, a channel selector (19) for selecting a channel of said ultra high frequency signals, said channel selector (19) controlling the channel selection in said tuner (18), a detector (23) for detecting the output signal of said tuner (18), and means (24, 25, 26) for processing the output signal of said detector (23), said processing means (24, 25, 26) producing a video signal and an audio signal, respectively.
Claim 7
Dependent Claim
25 words
Apparatus according to claim 5 further comprising antenna means (1) for supplying said circularly polarized super high frequency signals received thereat to said converter (6).
Claim 8
Dependent Claim
18 words
Apparatus according to claim 6 further comprising monitor means supplied with said video signal and said audio signal.
References Cited (Backward Citations)
No citation records indexed.
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