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"Transmission of documents via telephone wires is possible in principle, but the apparatus required is so expensive that it will never become a practical proposition."
Dennis Gabor, British physicist
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| Number | Title | Issue Date |
| 8131235 | Radio receiver for hybrid broadcast systems An example radio receiver and a method is provided for controlling a radio receiver having two tuners, and receiving a hybrid signal containing digital and analog broadcast signal components. According to the example method, a selection is made in the radio receiver... | 03/06/2012 |
| 8121566 | Broadcast receiver and broadcast channel seek method A broadcasting receiver suitable for receiving broadcasting signal transmitted with signal format is provided in which carrier wave is allocated in a frequency channel with certain frequency offset and signal intensity, which comprises: an information acquiring mean... | 02/21/2012 |
| 8103230 | Broadcasting receiver, broadcasting identification method, broadcasting identification program, and recording medium therefor While sequentially changing the selected channel, a digital broadcast judgment part collects level value VW of a signal extracted on a wide band, a bandwidth suitable for reproduction of an analog broadcast, reported from a reproduction processing unit as... | 01/24/2012 |
| 8103231 | Transmission and receiver system operating on different frequency bands A receiver can extract digital data from wireless radio frequency signal. The digital data contains at least two sets of compressed digital audio data each associated with a different set of audio program. One set of compressed digital audio data is delivered in a f... | 01/24/2012 |
| 8064857 | Method and apparatus for co-channel interference detection in a radio A method of configuring a tuner includes sampling a radio frequency and measuring at least one signal quality metric for the sampled frequency. It is determined whether there is co-channel interference on the sampled frequency based on the measurement of the at leas... | 11/22/2011 |
| 8055220 | Broadcast receiver for and method of providing broadcast channel information A broadcast receiver for and a method of providing broadcast channel information in which a broadcast search list is dynamically created and provided to a user, the broadcast receiver including: a tuner unit to tune a broadcast channel from a plurality of broadcast ... | 11/08/2011 |
| 8010068 | Transmission and receiver system operating on different frequency bands A receiver contains a demodulator system that can extract digital data from wireless radio frequency signal. The digital data contains three sets of compressed digital audio data. Two sets of compressed digital audio data are delivered in a first frequency band and ... | 08/30/2011 |
| 7986928 | Method and apparatus for selecting a radio channel for transmitting an audio signal to a radio local receiver A transmitter device (100) receives an audio signal from an audio source device (112), and transmits the audio signal at a low power over a commercial broadcast channel to a local receiver (120). The transmitter device selects an initial channel... | 07/26/2011 |
| 7856217 | Transmission and receiver system operating on multiple audio programs A receiver contains a demodulator system that can extract digital data from wireless radio frequency signal. The digital data contains two sets of compressed digital audio data corresponding to two audio programs. The receiver also contains two decompressors. If a u... | 12/21/2010 |
| 7853225 | Simplified high frequency tuner and tuning method A disclosed method tunes a signal from a channelized spectrum having a predetermined channel spacing. A signal of interest having a predetermined maximum bandwidth is mixed with a local oscillator signal, which has a frequency that is an integer multiple of the chan... | 12/14/2010 |
| 7831229 | FM receiver with digitally controlled antenna tuning circuitry An FM receiver including an FM antenna that receives continuous wavelength signals, where the FM receiver is coupled to the FM antenna and operable to alter a center frequency of a gain profile of the FM antenna. The FM receiver includes a low noise amplifier module... | 11/09/2010 |
| 7778614 | Receiver storage system for audio program A receiver contains a demodulator system that can extract digital data from wireless radio frequency signal. The digital data contains at least three sets of compressed digital audio data each corresponding to an audio program. At least two of the three sets of comp... | 08/17/2010 |
| 7715813 | Receiver having tunable amplifier with integrated tracking filter A receiver is disclosed. The receiver includes: a tunable low noise amplifier (LNA), the tunable LNA comprising: a plurality of LNAs for receiving and amplifying a plurality of frequency bands respectively; a plurality of first switches respectively coupled to the p... | 05/11/2010 |
| 7672651 | Tuner circuit A high frequency signal selected via a pre-filter is inputted to first and second frequency conversion circuits together with a local oscillation signal. The first and second frequency conversion circuits each output a difference frequency component between both inp... | 03/02/2010 |
| 7660566 | System for creating a programmable tuning voltage A system for generating a tuning voltage including a processor, a tank circuit, and a feedback loop. The processor creates a tuning voltage that is provided to the tank circuit. A feedback loop optimizes tuning performance by adjusting the tuning voltage based on ra... | 02/09/2010 |
| 7639996 | Simplified high frequency tuner and tuning method A disclosed method tunes a signal from a channelized spectrum having a predetermined channel spacing. A signal of interest having a predetermined maximum bandwidth is mixed with a local oscillator signal, which has a frequency that is an integer multiple of the chan... | 12/29/2009 |
| 7596360 | Broadcast receiver and program A CPU confirms a receivable channel while sequentially changing channel numbers set to an analog front-end unit and specifies an area in which the receivable channel can be received and an area adjacent thereto by referring a receiving channel table by area and an a... | 09/29/2009 |
| 7444128 | Method of estimating a high frequency carrier signal A method of estimating the carrier frequency of a signal is disclosed. The method comprising the steps of initializing a time average vector to zero, selecting a user-selectable time segment to divide a received signal into. A signal is received, and divided into th... | 10/28/2008 |
| 7437134 | Tuner arrangement A tuner arrangement is provided comprising one or more tuners. Each tuner has two or more frequency changers, each comprising a mixer and a local oscillator. A controller controls the local oscillators in response to receipt of a channel select request. The controll... | 10/14/2008 |
| 7415272 | Method for improving data throughput in wireless networks with schedulable interruptions Data throughput functionality is improved in a network which supports high data rate applications and additional applications within a single receiver. Guidelines for tuning the receiver at variable time periods to avoid timeouts and fill radio link holes which resu... | 08/19/2008 |
| 7403753 | Receiving system operating on multiple audio programs A receiver contains a demodulator system that can deliver a stream of digital data comprising at least a first and a second audio program. If a user selects the first audio program, the receiver applies a first bit rate decompression to generate a stream of decompre... | 07/22/2008 |
| 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 |
| 7395031 | Mobile device and method for receiving and processing program-accompanying data Mobile device (3) and method for receiving and processing program-accompanying digital data, which are transmitted by a radio transmitter (1), for example a DAB transmitter, and of which at least certain comprise location parameters. The mobile device ... | 07/01/2008 |
| 7373119 | Method and apparatus for analog-to-digital conversion The present invention eliminates the need for an anti-aliasing filter in a receiver that employs an analog-to-digital converter. By maintaining a predetermined relationship between a local oscillator frequency and the sampling frequency of the analog-to-digital conv... | 05/13/2008 |
| 7369830 | Monolithic GPS RF front end integrated circuit A highly integrated GPS RF Front End which uses a single conversion stage employs an image rejection mixer stage to eliminate the need for an image reject RF bandpass filter. Also a relatively high sample rate A/D is employed which allows a timeless monolitic IF Fil... | 05/06/2008 |
| 7369824 | Receiver storage system for audio program A receiver contains a demodulator system that can deliver a stream of digital data comprising at least a first and a second set of audio data. In a first time interval, a memory is used to store either the first or the second set of audio data. In a subsequent time ... | 05/06/2008 |
| 7362659 | Low current microcontroller circuit A method and system for accurate timing in a low current system useful in fuzing applications generates a first count of oscillations of an oscillator of unknown frequency during a first period of unknown duration. A second count of oscillations of the oscillator is... | 04/22/2008 |
| 7359680 | Delay calibration in polar modulation transmitters A method and apparatus for dynamically compensating for delay mismatch between a supply signal and an input signal of a power amplifier in polar modulation transmitters. One exemplary polar modulation transmitter according to the present invention comprises a power ... | 04/15/2008 |
| 7359671 | Multiple channel wireless communication system A wireless audio distribution system may have a wireless transmitter, responsive to a plurality of audio input channels, for transmitting signals carrying the audio, a receiver, responsive to the transmitted signals for selecting one or more of the audio input chann... | 04/15/2008 |
| 7356007 | CDMA receiver and method of judging TFCI candidates of the same In a CDMA receiver, the TFCI decoding error is reduced. When the difference between TFCI correlation values is small and hence TFCI candidates are less credible, data is decoded using transport format information according to a plurality of TFCI having a high TFCI c... | 04/08/2008 |
| 7353008 | Method and system for optimizing decibel data conversion A Method and System for Optimizing Decibel Data Conversion. This invention provides an ability to convert linear signals into decibel units via digital logic circuitry. The resultant system can present information to users in real-time. This is made possible by perf... | 04/01/2008 |
| 7349391 | Tunneling between a bus and a network A system is described having a network, a bus and an interface coupling the network to the bus. A host is coupled to the network and executes software to generate packets for communication on the network. A bus device is coupled to the bus. The interface and host co... | 03/25/2008 |
| 7343135 | Method and apparatus for down conversion of radio frequency (RF) signals There is a need for an inexpensive, high-performance, fully-integrable, multi-standard transceiver, which suppresses spurious noise signals. The invention provides a topology that satisfies this need, using a first signal generator which produces an oscillator signa... | 03/11/2008 |
| 7340230 | Receiver architectures utilizing coarse analog tuning and associated methods Receiver architectures and associated methods are disclosed that provide initial analog coarse tuning of desired channels within a received signal spectrum, such as a set-top box signal spectrum for satellite communications. These architectures provide significant a... | 03/04/2008 |
| 7340274 | Cellular phone capable of receiving a plurality of broadcast waves A cellular telephone set is capable of receiving a plurality of broadcast waves while efficiently covering wide bands such as FM and TV broadcasts and reducing mutual effects on radio circuits if the cellular telephone set has the additional function of receiving FM... | 03/04/2008 |
| 7327992 | Tracking generator with internal vector modulation source A tracking generator for an RF measurement instrument having a receiver and a controller includes a vector modulator internal to the tracking generator. The internal vector modulator modulates complex baseband signals based on data from the controller to produce a v... | 02/05/2008 |
| 7302017 | System and method for adaptive matched filter signal parameter measurement A robust and flexible system for signal parameter measurements in the field of signal processing dynamically uses signal parameters from previous signal detections and parametric priorities to adaptively control and process the signal in an efficient and reliable ma... | 11/27/2007 |
| 7299018 | Receiver comprising a digitally controlled capacitor bank Receiver comprising an RF input filter including a digitally controlled capacitor bank with n capacitors being controlled by a tuning control signal for varying the tuning frequency of the RF input filter within a tuning range. For an improvement of the receiver in ... | 11/20/2007 |
| 7286808 | Broadcast receiving system and broadcast receiving method In a broadcast receiving system, a first antenna receives a broadcast signal of a first frequency band and a second antenna receives a signal of a second frequency band different from the first frequency band. A frequency conversion unit converts the signal of the s... | 10/23/2007 |
| 7283796 | Electronic tuning system An electronic tuning system includes an electronic tuner for adjusting the predetermined control voltage of a voltage controlled oscillator (VCO) to tune the local frequency signal to radio waves on an arbitrary channel in accordance with channel selection informati... | 10/16/2007 |
