Celebrity Inventors
Lawrence Welk, the bandleader who entertained millions of Americans over a generation of broadcasting his TV show, once received a patent: for a music-themed design of an ashtray.
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 |
| 7369185 | Broadcast receiving apparatus and method having volume control A receiving apparatus includes a receiving unit configured to receive a signal including a program, an acquiring unit configured to acquire information representing a category of the program received by the receiving unit, a volume data generating unit configured to... | 05/06/2008 |
| 7362384 | Apparatus and method for feed-forward image rejection in a dual conversion receiver A receiver portion includes a bandpass filter (e.g. SAW filter) that performs channel selection from an input signal having a plurality of channels, and an image cancellation circuit that is in parallel with the bandpass filter. The bandpass filter performs channel ... | 04/22/2008 |
| 7289167 | Television tuner including distribution connectors A metal frame body has first to fourth side plates and is divided, by a shield plate provided in the metal frame body, into a first compartment area near the first side plate and a second compartment area near the second side plate. A distributor is arranged in the ... | 10/30/2007 |
| 7268836 | Television tuner device generating intermediate-frequency signal free from harmonic interference of reference signal A television tuner device includes a metal frame, including a shielding plate which separates the space defined by the metal frame into a first chamber at a first side plate and a second chamber at a second side plate opposite to the first side plate; a distribution... | 09/11/2007 |
| 7227591 | Apparatus and method for receiving television and radio broadcasting signals using a single tuner There is provided a combined TV and FM radio receiver for selectively receiving TV and FM radio signals via a single tuner using a digital intermediate frequency (IF) stage. The receiver includes a tuner that selects TV band or FM radio band signals and converts the... | 06/05/2007 |
| 7158192 | Television tuner in which influence from analog signals is suppressed when receiving digital signals A high frequency amplifier for amplifying inputted television signals; a mixer for subjecting the television signals which have been amplified to frequency conversion into intermediate frequency signals; a SAW filter for selecting, out of the intermediate frequency ... | 01/02/2007 |
| 7145610 | Receiving method and apparatus of analog television signals technical field Receiving method and apparatus of analog television signals where analog television signals receiving is performed by digital processing are proposed. A high frequency signal supplied to an input terminal 1 is supplied to a mixer circuit 2 and m... | 12/05/2006 |
| 7116960 | Image-rejecting antenna apparatus An image-rejecting antenna apparatus includes an antenna unit for receiving or transmitting a wireless signal and an image-reject unit for removing an image component signal having a predetermined frequency from among signals received from the antenna unit. In an im... | 10/03/2006 |
| 7092042 | Broadcasting receiver A PLL circuit compares a PCR with the output frequency of a voltage controlled oscillator (VCO), and returns a voltage value which is the result of the comparison to the VCO, so that a reference clock corresponding to the PCR is outputted from the VCO. A switch supp... | 08/15/2006 |
| 7030937 | Simplified TV tuner intermediate frequency circuit Between a mixer and an intermediate frequency amplifying circuit, there are an intermediate frequency tuning circuit which, for reception of a TV signal, is tuned between a chrominance subcarrier frequency and a video intermediate frequency in an intermediate freque... | 04/18/2006 |
| 6967694 | Demodulator for demodulating digital broadcast signals To present a digital broadcast demodulator, in a demodulator of digital terrestrial wave broadcast for transmitting coded digital video and audio information in a packet form, capable of detecting packet synchronism stably and precisely, controlling the AGC, and pro... | 11/22/2005 |
| 6927805 | Compactly-designed television receiver A television receiver intended to decrease the number of expensive SAW filters to achieve low cost and a compact design. A trap circuit is interposed between a mixer and a SAW filter. During reception of a television signal, one of the trap frequencies at which the ... | 08/09/2005 |
| 6917390 | Intermediate-frequency coupled-circuit for television tuner An intermediate-frequency (IF) coupled-circuit for a television tuner is provided, which is connected between an IF amplifying stage and a video-signal-selection filter, and which comprises a parallel circuit having a second capacitor connected in parallel to a seri... | 07/12/2005 |
| 6909470 | Digital broadcast recorder A digital broadcast recorder capable of recording digital television (TV) signals includes a first frequency converter which converts a received digitally modulated TV signal into a first intermediate frequency signal having a frequency lower than that of the digita... | 06/21/2005 |
| 6909471 | Audio volume control Systems and method for controlling audio volume are provided. One method for controlling audio volume includes receiving a user input requesting a first volume-type that is associated with a first audible volume level, and responsive to receiving the user input, mod... | 06/21/2005 |
| 6876401 | FM-broadcast-receivable television tuner for preventing adjacent-channel interference A trap circuit system includes a first trap portion and a second trap portion. In the first trap portion, a first capacitor is provided in parallel to a first switch diode. A control voltage is applied to the cathode of the first switch diode so as to change the tra... | 04/05/2005 |
| 6791627 | Television signal receiver In a television signal receiver for receiving and processing television signals (RF) that comprise modulated video signals and modulated audio signals, a tuner (16) receives selected television signals and furnishes at least intermediate frequency (IF) signal... | 09/14/2004 |
| 6760079 | TV tuner unit having a resonance network A TV tuner unit uses a frequency-selective element before or after the resonance stage of either a UHF or VHF tuner for separation of UHF signals from VHF signals. Thus, performance is preserved while eliminating the need for circuitry including high and low pass fi... | 07/06/2004 |
| 6731348 | Television tuner having simple layout and capable of receiving FM broadcast signals without interference A television tuner includes a mixer circuit for receiving a television signal or an FM signal, and a local oscillator circuit for generating an oscillation signal received by the mixer circuit. When the television signal is received, a television intermediate-freque... | 05/04/2004 |
| 6683656 | Video intermediate frequency processing apparatus In an image intermediate-frequency processing apparatus, in addition to a first phase locked loop (PLL) for receiving a television broadcast, there is provided a second PLL including a voltage controlled oscillator (VCO), two frequency-dividing units, a r... | 01/27/2004 |
| 6590619 | Broadcast sound signal processing circuit A semiconductor integrated circuit in which a band-pass filter, a sound detector, and some other circuits are formed on a single semiconductor substrate. The output signal from an AM detector is passed through a high-pass filter to obtain, substantially, ... | 07/08/2003 |
| 6523178 | Video transmission system In a video transmission system which transmits video data through an ATM network, the ATM network sets up fixed virtual connections between transmitters and a receiver. In the receiver, a connection control portion designates a desired one of the virtual ... | 02/18/2003 |
| 6515711 | System for correcting an aural carrier signal An aural carrier signal is corrected in a common amplifier system wherein the correction serves to reduce cross-modulation distortion of the aural carrier signal caused by non-linearities of the common amplifier system. An aural corrector receives a modul... | 02/04/2003 |
| 6512555 | Radio receiver for vestigal-sideband amplitude-modulation digital television signals Apparatus for reproducing data from a selected digital television signal, transmitted in packet form as vestigial-sideband (VSB) amplitude-modulation (AM) of a carrier, has a tuner for selecting a digital television signal and converting it to a final ... | 01/28/2003 |
| 6335769 | Circuit for automatic discrimination of audio intermediate frequencies A circuit for automatically discriminating audio intermediate frequencies of a received television signal that has a simple, compact and inexpensive circuit structure and can operate stably. The circuit comprises a high pass filter circuit for eliminating... | 01/01/2002 |
| 6307595 | NTSC/DTV reception apparatus automatically conditioned for NTSC signal reception responsive to 4.5 MHz intercarrier Television signal reception apparatus for receiving a television signal selected from among transmitted television signals of different types includes a respective receiver portion for each of the different types. The current reception or non-reception of... | 10/23/2001 |
| 6281946 | Television receiver In a television receiver having a tuner 2 for converting a received signal from an antenna 1 to an intermediate frequency signal and supplying the intermediate frequency signal to a homodyne detector circuit through a filter device to extract a video sign... | 08/28/2001 |
| 6211925 | Video intermediate-frequency signal processing device capable of receiving FM broadcasts A video intermediate-frequency signal processing device capable of receiving FM broadcasts, includes a first FM detecting unit for demodulating an intermediate-frequency signal from a sound intermediate-frequency detecting unit using a phase-locked loop, ... | 04/03/2001 |
| 6111613 | Receiver for television multiplex broadcasting A receiver which receives two-channel multiplex broadcasting by using television sub audio. Two-channel data and/or facsimile data which are multiplexed on the broadcasting sub audio band of the television broadcasting wave including a video band, a main ... | 08/29/2000 |
| 6061096 | Digital-and-analog-TV-signal receivers, each with single first detector and shared high-band I-F amplification Radio receivers for receiving DTV signals, in accordance with the Advanced Television System Committee (ATSC) standard, or analog TV, in accordance with the National Television Systems Committee (NTSC) standard, each use a single first detector for both t... | 05/09/2000 |
| 5923378 | Using intercarrier signals for detecting NTSC interference in digital TV receivers During a period of transition from broadcasting analog TV signals to broadcasting digital TV signals, digital TV reception is susceptible to disruption owing to co-channel interference by analog TV signals. During this same transition period usually a dig... | 07/13/1999 |
| 5896182 | Amplitude modulator Amplitude modulator comprising a differential input pair receiving a modulating input signal, and a Gilbert cell multiplying a carrier signal by the modulating input signal; and a second differential pair of transistors receiving the carrier signal, and t... | 04/20/1999 |
| 5864373 | Video signal detection circuit and video signal processing device A video signal detection circuit of the present invention is provided with a trapping circuit which traps frequencies corresponding to color sub-carrier wave signal components and which is disposed between a phase comparing circuit and a voltage controlle... | 01/26/1999 |
| 5648823 | Circuit configuration for intermediate frequency demodulation and device for video signal processing including the circuit A circuit configuration for intermediate frequency demodulation for a video signal processing device includes an intermediate frequency filter to which an input signal converted to an intermediate frequency is delivered, and a mixer for demodulation with ... | 07/15/1997 |
| 5644368 | Composite signal detecting apparatus having associated filter A detecting circuit for a composite signal containing a video signal and an audio signal. A filter for attenuating the video and audio signals is provided in a PLL circuit loop disposed in the detecting circuit, thus the video or audio signal component ge... | 07/01/1997 |
| 5633690 | Automatic gain control circuit of a video processing system and method therefor An automatic gain control circuit for controlling gain according to a sound gain controller so as to output a stable video intermediate frequency signal includes a first gain control amplifier receiving a video intermediate frequency signal, for amplifyin... | 05/27/1997 |
| 5523801 | Upper and lower adjacent picture signal traps To provide a picture intermediate frequency circuit capable of preventing the occurrence of intermodulation beats in a strong electrical field, without affecting in any way the original picture signal. A picture intermediate frequency signal output from t... | 06/04/1996 |
| 5497205 | Apparatus for processing BPSK signal transmitted with NTSC TV on quadrature-phase video A vestigial-sideband amplitude-modulation transmitter using a balanced modulator for generating a suppressed carrier that is in quadrature phasing with the video carrier of a television signal receives as modulating signal a binary phase-shift-keying (BPS... | 03/05/1996 |
| 5483297 | Sound carrier detecting circuit A sound carrier detecting circuit for use in a television or a video tape recorder is disclosed. During the sound carrier detection, the carrier frequency of the sound signals is corrected by utilizing pulse width modulation signals output from a micropro... | 01/09/1996 |
| 5337091 | Video IF amplifier with auxiliary IF amplifier for intercarrier sound & AFT In a television receiver a downconverter responding to a selected television signal respectively supplies its first and second output signals as the input signals of first and second IF amplifiers, respectively. The downconverter includes a local oscillat... | 08/09/1994 |
