Bizarre Patents
A helium-filled sun shade for protecting individuals engaged in outdoor activities.
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 7400868 | Automatic tuning apparatus for filter and communication instrument An automatic tuning apparatus for a filter includes a mode wherein a switching part is controlled so that a reference signal is inputted to the filter, a plural number of control signals are successively input to a control terminal of the filter, a tentative value o... | 07/15/2008 |
| 7088400 | Display apparatus having TV tuner and method thereof A display apparatus includes an LCD panel, a main PCB having a signal processor processing and transmitting a video signal to the LCD panel, and a PCB supporting member supporting the main PCB, a front cover, and a rear cover attached to the front cover to accommoda... | 08/08/2006 |
| 4491975 | Radio receiver of electronic tuning system having automatic presetting circuit A radio receiver electronic tuning system includes a frequency sweep circuit for changing received frequencies by sequentially changing received frequency designating information, and a broadcasting wave search circuit for generating a search stop signal ... | 01/01/1985 |
| 4408346 | Key assembly A key assembly for receiving devices employed in communication engineering, particularly for broadcasting and television receivers, comprises a casing provided with mutually releasable keys in the form of press buttons adapted to switch on storable, selec... | 10/04/1983 |
| 4396949 | Television sound receiver A televison sound receiver includes an input terminal for receiving a television sound signal, a tuner connected to the input terminal, a channel selector connected to the tuner, an intercarrier sound demodulating circuit connected to the tuner, a split-c... | 08/02/1983 |
| 4355412 | Preset station selecting device in a radio receiver In a radio receiver which is electrically tuned to a broadcasting frequency, a preset station selecting device having a memory, a first circuit which previously writes a broadcasting frequency into the memory when it receives a write selection and write c... | 10/19/1982 |
| 4298851 | Presettable tuning apparatus A presettable tuning apparatus includes a digital tuner; a source of digital signals representing radio frequencies to which the tuning apparatus is respectively tuned; an addressable memory having a plurality of sequentially addressable storage locations... | 11/03/1981 |
| 4282516 | Keyboard encoding arrangement In a television receiver, a keyboard encoding arrangement which makes use of an existing register for storing binary signals representing control information and existing connections coupled to respective stages of the register includes transmission gates... | 08/04/1981 |
| 4280139 | Muting circuit for a television receiver A muting circuit for a television receiver of the type having a tuner which is operative to select a desired channel in accordance with a channel selection operation to produce a channel select signal representing the selected channel, a detector circuit ... | 07/21/1981 |
| 4263674 | Multi-band voltage variable capacitance tuner having automatic and manual tuning operations A tuning apparatus includes a dial plate marked with broadcast frequencies thereon, a guide shaft provided in parallel with the dial plate, a substrate having a resistive layer thereon, the resistive layer having varying resistance values distributed ther... | 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 |
| 4232395 | Multiband radio receiver with electronic preset tuning system A multiband radio receiver having an electronic preset tuning system is provided with a switch which is ganged with a preset switch in the electronic preset tuning system, so that an automatic frequency control is interrupted from a local oscillator in pr... | 11/04/1980 |
| 4210828 | Device for improving output waveform of manually controllable pulse generator for use in preset electronic tuning control device An output waveform of a manually operable tuning pulse generator of an electronic preset type tuning control device of a tuner using varactor diodes for a multi-band radio receiver is improved by using Schmitt trigger circuit means which may be provided w... | 07/01/1980 |
| 4204169 | Muting circuit in an electronic tuning type receiver Muting is provided for a receiver during preset channel selection by using the output signals from each channel selection switch to energize a muting circuit. During manual channel selection or during the resetting operation no muting is provided.... | 05/20/1980 |
| 4196395 | Preset state indicating unit in an electronic tuning type receiver A preset state indicating unit for use in an electronic tuning type receiver generates a visual indication when both a presetting switch and one of a plurality of channel selecting switches have been properly selected. The preset state indicating unit thu... | 04/01/1980 |
| 4191924 | Channel selection apparatus A channel selection apparatus comprises a counter, a decoder, a clock pulse generator, and a control circuit for controlling them, and selects a channel by switching a channel selection voltage by selecting a potentiometer. The counter includes a cascade-... | 03/04/1980 |
| 4187464 | Scanning receiver To lock out certain channels in a scanning receiver, a counter in the scanning control circuit is manually stepped to the channel to be locked out and a signal is recorded in a memory at that point by depressing a switch while the memory is addressed by t... | 02/05/1980 |
| 4167702 | Tuning apparatus A tuning apparatus includes a dial plate marked with broadcast frequencies thereon; guide shafts provided in parallel with the dial plate; a plurality of markers slidably mounted on the dial plate, with each marker representing a preset position and forme... | 09/11/1979 |
| 4157504 | VHF Television tuner with easy/flexible access A VHF television tuner for selection of a broadcasting television signal through mechanical switching selection of inductance coils, comprising; a tuner casing; a mechanical channel selection switch arrangement provided in said casing and including a rota... | 06/05/1979 |
| 4109207 | Coding member for programming of a radio communication apparatus A disc shape rotatable coding member for programming of a radio communication apparatus. The coding member has notches or teeth around its periphery which cooperate with a detent and permit indexing selection of disc positions that are indicated by a numb... | 08/22/1978 |
| 4041401 | Channel indicating apparatus A channel selecting and indicating apparatus for a television receiver includes a plurality of channel selecting variable resistors and a cover for the channel selecting variable resistors and having a plurality of channel indicating windows. In the chann... | 08/09/1977 |
