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| Number | Title | Issue Date |
| 7346107 | VSB transmission system for processing supplemental transmission data A VSB communication system or transmitter for processing supplemental data packets with MPEG-II data packets includes a VSB supplemental data processor and a VSB transmission system. The VSB supplemental data processor includes a Reed-Solomon coder for coding the su... | 03/18/2008 |
| 7260366 | Apparatus and method for transmitting and receiving data using an antenna array in a mobile communication system A data transmitting/receiving apparatus and method using an antenna array in a mobile communication system. A Node B measures a transmission status of each transmission antenna, classifies transmission data according to priority, and transmits to a UE high-priority ... | 08/21/2007 |
| 7224400 | Sharp-tuned filter-combiner for combining adjacent TV channels A filter-combiner for combining television signals from adjacent channels is presented herein. The combiner has two inputs that respectively receive an NTSC combined visual and aural signal and a DTV signal wherein the NTSC signal and the DTV signal are in adjacent ... | 05/29/2007 |
| 7136394 | Low-delay video encoding method for concealing the effects of packet loss in multi-channel packet switched networks A method for encoding digital video with low delay for transport on a multi-channel QoS packet-switched network using multiple reference pictures with specially designated “key frames” to minimize the undesired effects of packet loss on video quality. ... | 11/14/2006 |
| 7110048 | Digital signal transmitter synchronization system Methods, and apparatus for carrying out the methods, are disclosed for synchronizing a plurality of RF transmitters that are supplied with a common digital information signal for carrier modulation and subsequent transmission on a common channel throughout a prescri... | 09/19/2006 |
| 7079194 | Radio frequency modulator having C/L delay compensation function, and set-top-box using the same An RF modulator includes a C/L delay compensation function of compensating for a delay of a luminance signal with respect to a chrominance signal occurring during demodulating a video signal in a TV set. The RF modulator includes a C/L delay compensation unit delayi... | 07/18/2006 |
| 7000022 | Flow of streaming data through multiple processing modules Frame-based streaming data flows through a graph of multiple interconnected processing modules. The modules have a set of performance parameters whose values specify the sensitivity of each module to the selection of certain resources of a system. A user specifies o... | 02/14/2006 |
| 6996170 | Adaptive optimization methods, devices and appliances for the transmission of coded signals A method of transmitting blocks of data, in which, for at least one of the blocks of data, at least one parameter associated with this block of data is transmitted, the parameter representing the relative importance of the block of data associated with this paramete... | 02/07/2006 |
| 6947060 | Image forming apparatus, electron beam apparatus, modulation circuit, and image-forming apparatus driving method An image forming apparatus which performs pulsewidth modulation with a pulsewidth set by counting a clock. Especially, for grayscale level correction by setting the frequency of the clock, the periodic clock is counted, and an output pattern is changed in accordance... | 09/20/2005 |
| 6934514 | System for transmitting digital signals with FM signals A system for transmitting digital signals in the same band and on the same channel with FM signals is disclosed. The design of the system according to the present invention includes a coupler, which may be a +3 dB hybrid quadrature coupler, and circularly polarized ... | 08/23/2005 |
| 6933986 | Sharply tuned bandpass filter A sharply tuned bandpass RF filter is presented herein. The filter has an input port for receiving television RF signals and passing same to an output port for application to a load. The filter is tuned such that it exhibits the characteristic of passing only RF sig... | 08/23/2005 |
| 6862320 | Image decoder, image encoder, image communication system, and encoded bit stream converter An image decoding apparatus is capable of decoding coded bit streams with different coding schemes. The image decoding apparatus includes a coding scheme decision section for deciding a coding scheme from coding scheme identification information multiplexed into a c... | 03/01/2005 |
| 6710813 | Multiplexer for adjacent NTSC and DTV channels A signal mutiplexer that combines the NTSC and DTV signals of adjacent television channels into a composite signal for transmission on a common transmission line or wave guide. Separate hybrid couplers and band pass filters produce quadrature phase signals that are ... | 03/23/2004 |
| 6549242 | Combining adjacent TV channels for transmission by a common antenna Television signals from adjacent channels are broadcast with a common antenna. First television signals from a first channel are selected from a first frequency band including a plurality of channels. Second television signals from a second channel in the... | 04/15/2003 |
| 6366309 | Method for the terrestrially transmitting digital signals A method is proposed that is used for terrestrial transmission of at least one digital signal, in particular a digital radio and/or TV broadcasting signal. In this method, the at least one digital signal, reduced in its data quantity by coding, is modulat... | 04/02/2002 |
| 6278498 | Apparatus and method for combining digital and analog television signals An adjacent channel combiner combines an analog television channel with an upper adjacent digital television channel using practical filter designs. An aural signal of the analog television channel is combined after both a visual signal and a digital sign... | 08/21/2001 |
| 6166774 | Combining NTSC visual and aural signals with DTV signals Apparatus and method are provided by which television signals may be transmitted from adjacent NTSC and DTV channels. The NTSC television signals for a first channel are selected from a frequency band including a plurality of channels and wherein this fir... | 12/26/2000 |
| 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 |
| 5825430 | Method, encoder and decoder for the transmission of digital signals which are hierarchically structured into a plurality of parts A method and apparatus for the transmission of digital signals comprises the steps of forming at least two data channels carrying data packets, and eventually header data. The channels have different levels of error protection and include picture data, wh... | 10/20/1998 |
| 5742343 | Scalable encoding and decoding of high-resolution progressive video High-resolution, progressive format video signals having high frame rates may be encoded by a base layer encoder and an enhancement layer encoder to provide two kinds of encoded video signals which share a common output channel. These encoded video signal... | 04/21/1998 |
| 5614955 | Compressed digital multi-channel video communications system having one or more auxiliary channels to accomodate high bit rates A compressed digital multi-channel video communications system having at least one auxiliary channel. The other channels are assigned to respective program sources. These channels are prioritized. The auxiliary channel works with the assigned channel whic... | 03/25/1997 |
| 5430492 | Method of transmitting digital HDTV signals For transmitting digital HDTV signals, the HDTV signal, which is either fed with a data rate of ࣘ20.48 Mbit/s or which is data-reduced to such a data rate of ࣘ20.48 Mbit/s by means of a method utilizing the psycho-optical phenomena of the human eye, i... | 07/04/1995 |
| 5398073 | Concatenated coded vestigial sideband modulation for high definition television A modulation scheme for HDTV, for example, uses a concatenated code comprised of a Reed-Solomon coder followed by an N-dimensional trellis coder whose N-dimensional output symbols with N>1, are used to modulate a one-dimensional vestigial sideband modulat... | 03/14/1995 |
| 5325127 | Process for transmitting digital data, in particular sound data, in a TV channel In a method of transmitting digitally coded information in a television sound channel, the digitally coded information is inserted on an existing frequency-modulated RF sound carrier as a channel-coded signal above the television audio-frequency base spec... | 06/28/1994 |
| 5247351 | High definition television system compatible with NTSC system A HDTV system compatible with NTSC is accomplished by employing two channels for transmitting data. Since the channel I has low spatial definition+high time definition and the channel II has high spatial definition+low time definition, associating the cha... | 09/21/1993 |
| 5202755 | Encoding system of a simulcast high definition television and method thereof An encoding system of a simulcast high definition television and a method thereof capable of encoding an image signal of high picture quality and an aural signal of high tone quality. In order to improve a MIT proposal system, the bandwidth of a baseband ... | 04/13/1993 |
| 5134464 | Method and apparatus for the transmission and reception of a multicarrier digital television signal A method and apparatus for encoding a television source signal having a first bandwidth, into a frequency multiplexed signal having a narrower bandwidth and comprising a plurality of subcarriers modulated with digital information. Each of said subcarriers... | 07/28/1992 |
| 5127021 | Spread spectrum television transmission A spread spectrum transmission system for transmitting a television signal, the transmission system including a module for dividing the television signal into a plurality of frequency components; a module for grouping at least some of the frequency compon... | 06/30/1992 |
| 5111287 | TV signal transmission systems and methods A television system includes a plurality of complementary transmitter and receiver stages for processing an HDTV signal to minimize co-channel interference to and from NTSC signals, thereby facilitating the use of so-called "taboo" channels for the transm... | 05/05/1992 |
| 5067009 | Apparatus for recording and/or reproducing a component video signal having a luminance signal of a wide frequency band and a chroma signal in a band below the high end of the luminance signal band and within the latter In an apparatus for recording and/or reproducing a component video signal having a luminance signal of a wide frequency band so as to be reproducible for obtaining a picture of high resolution and a chroma signal in a chroma band included in the frequency... | 11/19/1991 |
| 5061999 | Multiplex signal processing apparatus A signal of the same frequency band as an ordinary NTSC signal of the video signals is transmitted with the conventional frequency band but the other frequency components are frequency-converted to a frequency higher than the sound subcarrier as the multi... | 10/29/1991 |
| 5043805 | TV signal transmission systems and methods A television system includes a plurality of complementary transmitter and receiver stages for processing an HDTV signal to minimize co-channel interference to and from NTSC signals, thereby facilitating the use of so-called "taboo" channels for the transm... | 08/27/1991 |
| 4994899 | Frequency generation for extended bandwidth MAC color television encoding and decoding In a Multiplexed Analog Component (MAC) color television transmission system in which the MAC signal is to be converted at the receiver to a composite color television signal having a 227.5 fH color subcarrier, frequency-generation equipment re... | 02/19/1991 |
| 4943847 | Extended definition television Extended horizontal definition is provided in a television system in which the wideband and narrowband chrominance components of a video signal are modulated for transmission by a subcarrier. The modulated wideband I chrominance component is filtered over... | 07/24/1990 |
| 4870481 | Color television signal transmission system and improved-definition receiver for use in the system A color television signal transmission system in which, at the transmitter end the frequency bandwidths of the brightness and chrominance signals are extended by two to three times as compared with the NTSC system to improve horizontal resolution and colo... | 09/26/1989 |
| 4837611 | Wideband NTSC-compatible transmission system with noise reduction processing A method and apparatus for encoding and detecting a wide band quadrature modulated color television signal which is NTSC format compatible is disclosed. The encoding steps include: generating an amplitude modulated radio frequency carrier; generating a fi... | 06/06/1989 |
| 4665427 | Method and apparatus for converting C-MAC television signals for transmission over a limited bandwidth medium A wide-band frequency modulated DBS signal of the type having time sequential compressed chrominance and luminance (video) components is received by an aerial (1), frequency converted in a down converter (2) and applied to the input (4) of a conversion un... | 05/12/1987 |
| 4641179 | Economical high-definition television using a modulated-signal combination A television (TV) system having a compatible high-definition signal receivable at conventional resolution by conventional TV receivers without auxiliary apparatus with carrier modulated high-definition luminance information being transmitted in a continuo... | 02/03/1987 |
| 4622578 | Fully compatible high definition television A fully compatible high definition signal, which can still be received with conventional resolution by conventional TV receivers without auxiliary apparatus is provided by the present invention. One TV channel carries the conventional TV signal while high... | 11/11/1986 |
| 4589011 | Single sideband modulated chrominance information for compatible high-definition television A television system having a fully compatible high-definition signal receivable at conventional resolution by conventional TV receivers without auxiliary apparatus with one TV channel carrying the conventional TV signal while high-frequency luminance and ... | 05/13/1986 |
