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| Number | Title | Issue Date |
| 5786870 | NTSC video signal receivers with reduced sensitivity to interference from co-channel digital television signals A video signal receiver with reduced sensitivity to interference from co-channel digital TV signals includes circuitry for selecting a vestigial sideband amplitude-modulation signal descriptive of a video signal, converting the selected VSB AM signal to a... | 07/28/1998 |
| 5774195 | Broadcasting system discriminating television receiver for differentiating between analog and digital telecast signals A broadcasting system discriminating television receiver including a circuit for evaluating the output of an FM demodulator, a circuit for evaluating the output of an I/Q wave detector, and a controller for controlling a switch based on the results of eac... | 06/30/1998 |
| 5774194 | Terrestrial and satellite television reception tuner A tuner is used in common for both terrestrial and satellite television reception. A second mixing stage is switched as a mixer for signal conversion into a second intermediate frequency during terrestrial television reception and is switched as a compone... | 06/30/1998 |
| 5748262 | Method of digitization of intermediate frequency signals in particular television signals, and device for implementation of the method A method of digitization of an intermediate frequency signal having a bandwidth that can change from one standard to another and of which one of the frequency limits of this band is substantially constant, wherein before converting the analog signal into ... | 05/05/1998 |
| 5745004 | FPLL with third multiplier in an AC path in the FPLL A FPLL has first second and third multipliers with the first multiplier supplying demodulated signals to a limiter and the second multiplier supplying signals to the loop filter. A VCO and phase shift circuit supply quadrature signals to the first multipl... | 04/28/1998 |
| 5745187 | Method and apparatus for combating co-channel NTSC interference for digital TV transmission using a bank of rejection filters A television receiver for reducing a co-channel interference in a digital television signal transmitted by a transmitter, wherein the digital television signal includes an encoded digital television signal component, a co-channel interference component, a... | 04/28/1998 |
| 5742357 | Direct data tuner An improved tuner for recovery of data having a data bandwidth embedded in a video signal transmitted in association with a video carrier frequency is disclosed. The entire video signal is shifted to the intermediate frequency bandwidth, thereby shifting ... | 04/21/1998 |
| 5739860 | Method of and apparatus for decoding moving picture and outputting decoded moving picture in normal or frame-skipped reproducing operation mode In a moving picture decoding apparatus, an output section is provided with a circuit for making a logic sum of control signals for renewing a picture data output, as a control signal for determining a picture data to be next outputted in a selected mode. ... | 04/14/1998 |
| 5717471 | Apparatus for demodulating and decoding satellite, terrestrial and cable transmitted digital television data A Digital signal processor selectively demodulates and decodes signals received from multiple types of transmission channels such as satellite, terrestrial and cable transmission channels. A received signal is representative of compressed digital video in... | 02/10/1998 |
| 5686862 | FM demodulator integrated on semiconductor chip without discrete circuit components An FM demodulator formed on a semiconductor chip generates a demodulated audio-frequency signal from an audio intermediate frequency signal through a phase locked loop constituted by a multiplier, a low-pass filter and a voltage-controlled oscillator. A v... | 11/11/1997 |
| 5666170 | Apparatus for decoding video signals encoded in different formats An adaptive receiver includes an adaptive decoder for providing decoded output data from a video signal encoded for satellite, terrestrial or cable transmission. The apparatus includes an adaptive decoder for providing a first decoded output as a function... | 09/09/1997 |
| 5663773 | Demodulator for a complex-value vestigial sideband signal In a demodulator for a complex-value vestigial sideband signal, a Nyquist slope filter which consists of two subfilters (Ra, Ia) is used, a filter device (FBASTP) being connected downstream of, or also capable of being integrated in, the said Nyquist slop... | 09/02/1997 |
| 5661528 | Apparatus and method for controlling operation of a high defination television adaptive equalizer An adaptive equalizer for use in a high definition television (HDTV) receiver, which includes a filtering device having a first filter for FIR (Finite Impulse Response) filtering by receiving a real signal and a real coefficient for output from the filter... | 08/26/1997 |
| 5659372 | Digital TV detector responding to final-IF signal with vestigial sideband below full sideband in frequency A tuner selects one of channels at different locations in a frequency band used for transmitting VSB HDTV signals including symbol codes descriptive of digital signals. The tuner also includes mixers for performing plural conversion of the selected channe... | 08/19/1997 |
| 5654767 | Digital chrominance signal demodulating device In a digital chrominance signal demodulating device receiving a carrier chrominance signal obtained by digitizing an analog composite video signal, a frequency component near the horizontal frequency of the color subcarrier is extracted, and color-differe... | 08/05/1997 |
| 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 |
| 5640213 | Television receiver being driven by either analog broadcasting signals or digital broadcasting signal A television receiver having an input section for splitting a reception signal to a first signal and a second signal, first and second mixers for respectively receiving the split reception signals, a local oscillator for outputting first and second local ... | 06/17/1997 |
| 5627604 | Stabilizing the lock up of a bi-phase stable FPLL by augmenting a recovered DC pilot A bi-phase stable FPLL is locked by a DC pilot component in a recovered data signal. The signal is formatted in repetitive data segments including sync characters and a DC pilot. A sign bit, indicative of the polarity of the recovered data, is developed f... | 05/06/1997 |
| 5621483 | Polarity selection circuit for bi-phase stable FPLL A television receiver includes a synchronous demodulator including a bi-phase stable PLL for controlling sampling of the received signal to produce data. A phase inverter reverses the phase of the data in response to a control signal. Data segment sync ch... | 04/15/1997 |
| 5621477 | Digital decoder and method for decoding composite video signals A system for the digital decoding of composite video signals (CVBS), comprising a brightness signal (luminance component Y) and two color difference signals (chrominance components U, V). The system modulates a color subcarrier according to the quadrature... | 04/15/1997 |
| 5617151 | Automatic broadcasting channel selection method and television receiver adopting the same A television receiver which automatically selects broadcast channels on the basis of station identification codes transmitted with television signals. The receiver has: a tuner for performing tuning operations according to respective channel data, and for... | 04/01/1997 |
| 5604541 | High definition television receiver A HDTV receiver which is improved in its overall performance and is simplified in its configuration, by improving a symbol timing restoring circuit, includes a tuner for selecting a necessary channel from input signals via an antenna, an IF processing & c... | 02/18/1997 |
| 5602601 | Phase error corrector for HDTV reception system A phase error corrector for an HDTV reception system, which can correct data level errors by reducing phase errors coming from local oscillators, includes a gain and offset adjustment unit for adjusting a gain and an offset of incoming I data, a Hilbert t... | 02/11/1997 |
| 5600378 | Logical and composite channel mapping in an MPEG network Two additional structures for addition to the Digital Video Broadcasters (DVB) Service Information (SI) for implementation of the MPEG-2 Systems Standard (ISO/IEC 13818-1 are provided: the Logical Channel Table (LCT) and the Composite Channel Table (CCT).... | 02/04/1997 |
| 5596319 | Vehicle remote control system A vehicle remote control system includes at least one remote controlled vehicle and a remote control station for each of the at least one remotely controlled vehicles. Each control station allows a user to control the operation of one of the remote contro... | 01/21/1997 |
| 5572264 | High definition TV signal receiver To make it possible to receive a modulated signal which is obtained by suppressing a carrier signal such as a high definition TV signal which is digitally demodulated such as QAM (quadrature amplitude modulation), a receiver of the double super-heterodyne... | 11/05/1996 |
| 5570136 | HDTV receiver An HDTV receiver is disclosed including a tuning portion for selecting one of a plurality of RF signals received, and converting a selected RF signal into an intermediate frequency signal; a demodulator/FPLL for demodulating the intermediate frequency sig... | 10/29/1996 |
| 5570137 | Device for digital demodulation of video and audio elements of television signal A device for digital demodulation of the video and audio elements of a television signal has a digital preprocessing stage for conditioning a complex digital signal for digital demodulation of a television signal at intermediate frequency, a first complex... | 10/29/1996 |
| 5568206 | Device for processing modulated rail analog television signal A device for processing a modulated real analog television signal has a digital preprocessing stage for conditioning a complex digital signal for digital demodulation of a television signal at intermediate frequency. The digital signal preprocessing is ca... | 10/22/1996 |
| 5565932 | AGC system with pilot using digital data reference An AGC circuit for a digital receiver that receives a digital television signal or the like, including a pilot, and formatted in a plurality of repetitive data segments, each data segment comprising a fixed number of multilevel symbols occurring at a cons... | 10/15/1996 |
| 5555275 | Multi-threshold and hierarchical television signal transmission system At the transmitter side of a signal transmission system, carrier waves are modulated according to an input signal for producing relevant signal points in a signal space diagram. The input signal is divided into two, first and second, data streams. The sig... | 09/10/1996 |
| 5550596 | Digital television signal processing system including a co-channel rejection filter A digital signal proces sing system for receiving and processing a high definition television signal, eg., in a Pulse Amplitude Modulation (PAM) format, includes a filter for rejecting interferer signals such as a narrowband continuous wave NTSC co-channe... | 08/27/1996 |
| 5548344 | Demodulating system for high-definition television receiver A demodulating system for a high definition television (HDTV) that includes a tuning circuit for selecting one out of a plurality of received radio frequency (RF) signals and for converting the selected signal into an intermediate frequency (IF) signal ac... | 08/20/1996 |
| 5541672 | Device for digital demodulation of video and audio elements of television signal A device for digital demodulation of the video and audio elements of a television signal has a digital preprocessing stage for conditioning a complex digital signal for digital demodulation of a television signal at intermediate frequency, mixing devices ... | 07/30/1996 |
| 5539477 | Video-signal transmitter-receiver and a signal transmission apparatus utilizing the same A signal transmitter and receiver (or a combination thereof) incorporated for example in audio and video apparatus such as a TV and a video-deck, comprises a synchronizing signal separator separating a synchronizing signal from video-signal, a monostable ... | 07/23/1996 |
| 5526061 | Circuit arrangement for demodulating a video signal Circuit arrangement for demodulating a video signal (IF signal) which is frequency-modulated on an intermediate-frequency carrier oscillation, including a first demodulation stage (a frequency or phase demodulator) for multiplicatively combining the IF si... | 06/11/1996 |
| 5510855 | Satellite television broadcasting receiver including improved clamping circuit The present invention relates to a satellite television broadcasting receiver which receives waves from a satellite, selects a broadcasting channel and obtains an FM demodulated video signal by passing a selected signal through the band-pass filter. In th... | 04/23/1996 |
| 5506636 | HDTV signal receiver with imaginary-sample-presence detector for QAM/VSB mode selection A radio receiver for receiving a selected digital HDTV signal, irrespective of whether it is a complex-amplitude-modulation (QAM) or a vestigial sideband (VSB) signal, using the same tuner. The final IF signal from the tuner is digitized for application t... | 04/09/1996 |
| 5507025 | Method and apparatus for satellite receiver with variable predetection bandwidth A satellite receiver having first and second stages that are serially coupled so that an output of the first stage feeds into an input of the second stage is provided. Each of the first and second stages includes a tunable oscillator for providing a refer... | 04/09/1996 |
| 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 |
