Bizarre Patents
Wearable Device For Feeding and Observing Birds and Other Flying Animals
A device for feeding and observing flying animals comprising a hat, a support mounted on the hat and extending outward from the hat, and a feeder mounted on the support.
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| Number | Title | Issue Date |
| 7427907 | Boosted-bias tunable filter with dynamic calibration In a signal communication device, a frequency-selective filter has at least one component that is biased by a control signal to establish a center frequency of the frequency-selective filter. A closed-loop bias generator is provided to generate the control signal an... | 09/23/2008 |
| 4326296 | Tuning system for a color television receiver having a varactor tuner An improved tuning system for a color television receiver embodying a varactor tuner having a controller functioning as a potentiometer to provide a preselected tuning voltage for channel selection. The system includes a tuning voltage supply having a low... | 04/20/1982 |
| 4263675 | AFT circuit An automatic fine tuning (AFT) circuit includes a frequency discriminator for discriminating an intermediate frequency signal, a capacitor supplied with the discriminated intermediate frequency signal to produce an AFT voltage thereacross, a comparator ci... | 04/21/1981 |
| 4234961 | Receiver comprising a tuning member and an automatic tuning correction suppression circuit By using a optical switch, which can be operated by the tuning knob of a receiver, signals can be obtained which accurately correspond to the operation of the tuning knob for switch-over of the receiver to a continuous manual tuning mode and for suppressi... | 11/18/1980 |
| 4211988 | Search tuning system for television receiver A search tuning type channel detector system for television receivers. When AFC voltage of a tuner has attained a first predetermined voltage level, frequency sweeping direction for tuning is reversed and stopped thereby to tune the tuner at an optimum tu... | 07/08/1980 |
| 4127819 | Frequency discriminator apparatus A frequency discriminator having a bandwidth variable from a relatively narrow range to a very wide range in which the center frequency is simultaneously tunable over an extremely wide frequency range. The discriminator is insensitive to amplitude variati... | 11/28/1978 |
| 4125863 | AFC waveshaping circuit Automatic frequency control (AFC) circuitry compensating for the nonlinear tuning voltage sensitivity characteristics of voltage-controlled tuners is shown. The circuit uses a nonlinear device, such as a zener diode, to develop an amount of error correcti... | 11/14/1978 |
| 4122493 | Adaptive wideband AFC system Circuitry compensating for inherent nonlinearities in the tuning voltage sensitivity of varactor tuners, thereby providing relatively constant AFC pull-in range throughout the band of operating frequencies, is shown. In both the VHF and UHF bands, the AFC... | 10/24/1978 |
| 4107615 | Receiver including an automatic tuning correction suppression circuit coupled to the tuning member By using a double potentiometer one of which is used for tuning and the other for adjusting a level whose variation suppresses an automatic tuning correction, a great freedom can be obtained in designing the tuning section of a receiver with automatic tun... | 08/15/1978 |
| 4079320 | Method of and apparatus for tuning an AFT-controlled channel selecting apparatus to a desired frequency A method of and apparatus for tuning an AFT-controlled channel selecting apparatus of the type having a storage device for storing digital representations corresponding to predetermined channel frequencies from which a selected representation is read out ... | 03/14/1978 |
| 4079420 | Channel selecting apparatus In a channel selecting apparatus for a television receiver having an electronic tuning tuner for changing the receiving frequency in accordance with an analog control signal applied thereto; a memory has a plurality of addresses for storing respective dig... | 03/14/1978 |
| 4031491 | Tuning apparatus using a voltage-dependent reactance element A tuning apparatus using a voltage-dependent reactance element comprising a tuning circuit including a voltage-dependent reactance element as a tuning element, a voltage sweep circuit for generating a sweep tuning voltage to be applied to the voltage-depe... | 06/21/1977 |
| 3996540 | Indicating device for tuning apparatus An apparatus for indicating a tuned frequency of a tuner of a radio or television receiver, said tuner comprising a tank circuit employing a voltage controlled variable capacitance diode as a circuit element, which diode is supplied in a reverse direction... | 12/07/1976 |
| 3986154 | Automatic tuning apparatus An automatic tuning apparatus comprising a tuner having a tank circuit employing a voltage controlled variable capacitance diode as a circuit element, which diode is supplied in the reverse direction with a scanning control voltage from a solid state pote... | 10/12/1976 |
| 3968437 | Receiver including an automatic tuning correction suppression circuit coupled to a tuning member Switching off the automatic tuning correction of a receiver during tuning is accomplished with a signal derived from a level variation caused by a level adjusting circuit coupled to a tuning member.... | 07/06/1976 |
| 3968442 | Receiver tuning circuit A tuning circuit in which when the field strength of a received signal drops out, a tuning voltage from a switch can be applied to a capacitor so that the circuit stays tuned to the received signal. The voltage at the capacitor can further be controlled f... | 07/06/1976 |
| 3967057 | Automatic tuning apparatus An automatic tuning apparatus, such as an automatic channel selector as incorporated in a television receiver, comprising a tuner using a voltage controlled variable capacitance diode such that the variable capacitance thereof constitutes a portion of a t... | 06/29/1976 |
| 3965288 | Automatic tuning apparatus An automatic tuning apparatus, such as an automatic channel selector as incorporated in a television receiver, comprising a tuner using a voltage controlled variable capacitance diode such that the variable capacitance thereof constitutes a portion of a t... | 06/22/1976 |
| 3959728 | Local oscillation circuit for tuner having reduced inter-channel deviation in AFC sensitivity A local oscillation circuit for a tuner having a reduced inter-channel deviation in AFC sensitivity. The local oscillation circuit comprises a resonance circuit capable of varying a tuning frequency by means of a variable capacitive element additionally p... | 05/25/1976 |
