US3696302A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Uhf-vhf varactor tuner amplifying band conversion
Assignee: Standard Kollsman Industries Inc
•
Filing: 1970-10-30
•
Granted: 1972-10-03
•
Expires: 1990-10-30
Abstract
Abstract An all channel television tuner comprises separate UHF and VHF sections each utilizing voltage controlled diode capacitance tuning and being operable to select a corresponding input signal and band converting the same in inverted relation to an intermediate frequency of about 230 MHz and a second mixer section for converting from 230 MHz to the standard IF television signal.
Inventors
- 👤 Thomas F Gossard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 06:27
CPC Classifications
H; H03; H03J; H03J5/00; H03J5/24; H03J5/242; H03J5/244
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
164 words
A television tuner arrangement comprising band pass filter means for selecting input signals within a predetermined band of television frequencies, means for converting an output signal derived from said filter means to provide an intermediate frequency signal in a predetermined intermediate frequency band that is above the VHF television band, said means for converting including local oscillator means having voltage controlled diode capacitance tuning means for providing an oscillator signal variable over a frequency band above the predetermined intermediate frequency band and mixer means coupled to receive said input signal and said oscillator signal to produce saiD intermediate frequency signal as a difference frequency signal, and means for converting said intermediate frequency signal to a television signal in an intermediate frequency band below the VHF television band and including local oscillator means for providing a fixed frequency oscillator signal and mixer means coupled to receive said intermediate frequency signal and said fixed frequency oscillator signal to produce said television signal as a difference signal.
Claim 2
Dependent Claim
164 words
A television tuner arrangement comprising band pass filter means for selecting input signals within a predetermined band of television frequencies, means for converting an output signal derived from said filter means to provide an intermediate frequency signal in a predetermined intermediate frequency band that is above the VHF television band, said means for converting including local oscillator means having voltage controlled diode capacitance tuning means for providing an oscillator signal variable over a frequency band above the predetermined intermediate frequency band and mixer means coupled to receive said input signal and said oscillator signal to produce saiD intermediate frequency signal as a difference frequency signal, and means for converting said intermediate frequency signal to a television signal in an intermediate frequency band below the VHF television band and including local oscillator means for providing a fixed frequency oscillator signal and mixer means coupled to receive said intermediate frequency signal and said fixed frequency oscillator signal to produce said television signal as a difference signal.
Claim 3
Dependent Claim
18 words
A television tuner arrangement as defined in claim 1 wherein said intermediate frequency signal is about 230 MHz.
Claim 4
Dependent Claim
31 words
A television tuner arrangement as defined in claim 1 wherein said means for converting the input signal includes a local oscillator trap and the first-named mixer means comprises a balanced mixer.
Claim 5
Dependent Claim
130 words
An all channel television tuner arrangement comprising a VHF section for selecting input signals in the VHF television band and band converting the same in inverted relation to provide an intermediate frequency signal in a predetermined intermediate frequency band above the VHF television band, a UHF section for selecting input signals in the UHF television band and band converting the same in inverted relation to said intermediate frequency band, an IF section having an amplifier tuned to said predetermined intermediate frequency band and means coupled to said amplifier for converting said intermediate frequency signal to a television signal in an intermediate frequency band below the VHF television band and switching means selectively operable to couple output either from said VHF section or from said UHF section to said IF section.
Claim 6
Dependent Claim
130 words
An all channel television tuner arrangement comprising a VHF section for selecting input signals in the VHF television band and band converting the same in inverted relation to provide an intermediate frequency signal in a predetermined intermediate frequency band above the VHF television band, a UHF section for selecting input signals in the UHF television band and band converting the same in inverted relation to said intermediate frequency band, an IF section having an amplifier tuned to said predetermined intermediate frequency band and means coupled to said amplifier for converting said intermediate frequency signal to a television signal in an intermediate frequency band below the VHF television band and switching means selectively operable to couple output either from said VHF section or from said UHF section to said IF section.
Claim 7
Dependent Claim
18 words
A television tuner arrangement as defined in claim 4 wherein said intermediate frequency signal is about 230 MHz.
Claim 8
Dependent Claim
99 words
A television tuner arrangement as defined in claim 4 wherein said VHF section includes VHF local oscillator means having voltage controlled diode capacitance tuning means for providing a VHF oscillator signal of variable frequency and mixer means coupled to receive said VHF oscillator signal and the input signals corresponding to the VHF television band, and said UHF section includes UHF local oscillator means having voltage controlled diode capacitance tuning means for providing a UHF oscillator signal of variable frequency and mixer means coupled to receive said UHF oscillator signal and the input signals corresponding to the UHF television band.
Claim 9
Dependent Claim
18 words
A television tuner arrangement as defined in claim 6 wherein said predetermined intermediate frequency is about 230 MHz.
Claim 10
Dependent Claim
32 words
A television tuner arrangement as defined in claim 6 wherein each of said VHF AND UHF sections includes a separate tunable local oscillator trap tunable in conjunction with the corresponding local oscillator.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-10-03 | 1976-04-03 | 1976-10-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-03 | 1980-04-03 | 1980-10-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-03 | 1984-04-03 | 1984-10-03 | $7700.00 | Window Closed / Lapsed |