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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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....
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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 f H ...
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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...
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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...
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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...
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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...
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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...
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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....
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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...
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4564857 |
Aspect ratio improvement for compatible high-definition television
A television system having a fully compatible high-definition signal with extended aspect ratio information receivable at conventional resolution by conventional TV receivers without auxiliary...
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4543598 |
Color television systems
In a color television system the luminance signal is split into high and low frequency components, and the high-frequency luminance components are frequency shifted to above the conventional...
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4296431 |
High-resolution television system
A high-resolution television system in which color fidelity is preserved while allowing the use of frame-store type noise elimination techniques, by inverting one of the color axes at a first rate,...
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2881427 |
Television transmission system
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