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7068328 |
Method, apparatus and recording medium for image processing
The sense of contrast perceived by a viewer of an image is quantified and adequate image processing is carried out on image data based on the sense of contrast. Contrast-sense quantification means...
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7031535 |
Image processing apparatus capable of interpolating error data
This invention provides an image processing apparatus which receives an image signal divided into a plurality of different subband components, detects an error in low-frequency subband component...
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6055017 |
Adaptive scanning technique for efficient wavelet video coding
A wavelet video coding method using adaptive scanning includes subjecting the input video signal to a horizontal and a vertical wavelet decomposition to obtain base, horizontal, vertical and...
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5966183 |
Signal converter and signal conversion method
The present invention relates to a signal converter and a signal conversion method in which an interpolated image is formed on the basis of suitable classification according to features of an input...
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5500679 |
Method and apparatus for deriving a video signal corresponding to a standard definition signal from a high definition signal
A standard definition (SD) corresponding image is derived from a high definition (HD) image by performing a vertical line sub-sampling for every field with a ratio of an N:1, where N is an odd...
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5363141 |
Method and apparatus for transmitting encoded blocks of video signals at different channel rates
Encoded blocks of video information are selected for transmission at a plurality of channel rates based on the corresponding location of the portions of the video image represented by the encoded...
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5283656 |
Data compression apparatus for video signal and method of data compression for video signal
A data compression apparatus for video data having: a dividing circuit for dividing the video data into unit blocks, a converter for orthogonally converting the video data at each of unit blocks, a...
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5243629 |
Multi-subcarrier modulation for HDTV transmission
A high definition television (HDTV) signal is transmitted by a multi-subcarrier transmission scheme in which each subcarrier is used to carry a different class of HDTV information.
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5068725 |
Band compressing/restoring apparatus
In a band compression apparatus, an input signal is separated into high- and low-frequency components H and L by an LPF and an adder. The component H is in-frame-averaged by an in-frame average...
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5055927 |
Dual channel video signal transmission system
Video signal information derived from a high definition source is conveyed via two channels. A first channel conveys relatively low spatial resolution, high temporal resolution video information...
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5053860 |
Method and apparatus for the transmission and reception multicarrier high definition television signal
A method and apparatus for generating a multi-carrier high-definition television (HDTV) signal including a digital sound and sync (DSS) component, on a conventional television channel, for example,...
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5029002 |
High definition television system
A high definition television system includes an encoder for encoding a video source signal having a horizontal bandwidth of about 28-30 MHz for transmission through a 6 MHz RF channel. The video...
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5006926 |
High definition multiple analog component amplitude modulated television transmission system
A system for transmitting and receiving a high definition television signal with characteristics which are determined in part at the receiver. The system transmits an AM signal formed by frequency...
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4992853 |
System for transmission and reception of a high definition time multiplexed analog component (HDMAC) television signal having an interlaced input/output format
A system for transmitting an interlaced source signal, for example 1050 lines, 2:1 interlaced, via a MAC signal, and decoding and receiving same.
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4698665 |
Color television transmission or information storage system, respectively with time-division multiplex coding and data generator and receiver suitable therefor
Color television transmission or information storage system, respectively using time-division multiplex coding. A signal source is coupled via an encoding circuit for time-division multiplex coding...
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4621287 |
Time-multiplexing of an interleaved spectrum of a television signal
High horizontal spatial frequency information may be transmitted through a limited bandwidth channel by means of spatial-temporal frequency interleaving techniques. To transmit both frequency...
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4535352 |
Technique for generating semi-compatible high definition television signals for transmission over two cable TV channels
The present invention relates to a technique for generating a Semi-Compatible High Definition Television (SC-HDTV) signal which can be sent over two present-day Cable Television (CATV) channels. In...
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4476484 |
Technique for providing compatibility between high-definition and conventional color television
The present invention relates to a compatible high-definition television (CHDTV) color picture signal which is capable of conversion by simple and inexpensive means into either a HDTV composite...
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4429327 |
Compatible television system with increased vertical resolution
A television arrangement generates signals from independent pairs of adjacent lines. The signals are separately summed and differenced to produce S and Δ signals. The S signal is representative of...
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3869706 |
SYSTEM FOR CONVERTING TELEVISION SIGNALS INTO ANGLE MODULATED CARRIER WAVEFORMS OF REDUCED BANDWIDTH AND VICE-VERSA
The invention relates to systems for converting television signals into angle modulated waveforms of reduced bandwidth. The conversion consists in splitting the video information into two...
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2953635 |
Device for reproducing color television images
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